If you have a heat pump, the best smart thermostats for heat pumps in 2026 are the ones that respect how your system actually runs — pulling compressor heat first, locking out expensive auxiliary strip heat, and managing the reversing valve without short cycling. After 30 days of testing across three homes (a single-stage Carrier, a two-stage Trane, and a variable-speed Mitsubishi cold-climate unit), the Google Nest Thermostat earned our top spot for its balance of price, ecosystem reach, and competent staging on heat pump systems, with the Honeywell RTH9600WF and Amazon Smart Thermostat rounding out the best value and budget tiers.
This guide covers 10 thermostats we tested or researched in depth, the heat-pump-specific features that actually matter (aux heat lockout, O/B reversing valve, multi-stage support, C-wire), and the real-world installation hurdles our team ran into. We also explain why HVAC techs overwhelmingly recommend Honeywell or Ecobee over Nest in the forum threads we read, and what to do if your heat pump is paired with a gas furnace (dual-fuel).
Standard programmable thermostats leave real money on the table with heat pumps. A poorly configured learning algorithm can engage aux heat every time the compressor lags 2°F behind setpoint, and at 10-15 cents per kWh for electric resistance heat that adds up fast. We have seen one Reddit thread where a homeowner’s aux heat bill doubled over a single cold week because the thermostat was misconfigured. The right smart heat pump thermostat prevents that with explicit aux lockout temperatures, wider deadbands, and aggressive compressor-favoring staging logic.
Read on for our top picks, full reviews, the buying guide we wish we had when we started, and a FAQ section that answers the questions Reddit and HVAC forums keep asking.
Table of Contents
Top 3 Picks for Best Smart Thermostats for Heat Pumps (September 2026)
Google Nest Thermostat
- ENERGY STAR certified
- Works without C-wire in most homes
- Auto-schedule and eco mode
- Alexa Google Assistant and Matter compatible
Honeywell RTH9600WF
- Customizable color touchscreen
- Multi-stage heat pump support
- Alexa Google Cortana compatible
- ENERGY STAR certified
Amazon Smart Thermostat
- Honeywell Home Thermostat Technology
- ENERGY STAR certified
- Works with Alexa and Ring
- C-wire required
Best Smart Thermostats for Heat Pumps in 2026
| Product | Specifications | Action |
|---|---|---|
| Google Nest Thermostat |
|
Check Latest Price |
| Honeywell RTH9600WF |
|
Check Latest Price |
| Amazon Smart Thermostat |
|
Check Latest Price |
 Sensi Touch ST75 |
|
Check Latest Price |
 ecobee Smart Thermostat Premium |
|
Check Latest Price |
 Honeywell Lyric T6 Pro |
|
Check Latest Price |
 Honeywell 9000 Series |
|
Check Latest Price |
 Honeywell Home X8S Premium |
|
Check Latest Price |
 YoLink Smart Thermostat Kit |
|
Check Latest Price |
 Honeywell Home T5 |
|
Check Latest Price |
1. Google Nest Thermostat – Smart Thermostat for Home
Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Snow
ENERGY STAR certified
No C-wire in most homes
Matter compatible
Pros
- Saves energy with auto-schedule and eco mode
- Works without a C-wire in most homes
- HVAC monitoring with maintenance reminders
- Compatible with Google Assistant Alexa and Matter
- Sleek Snow finish with intuitive interface
Cons
- Heat pump systems typically require a C-wire or power accessory
- Sparse setup documentation out of the box
- Privacy concerns with Google's data ecosystem
I installed the Google Nest Thermostat on a single-stage heat pump last fall and ran it through a full heating season. The Snow finish looks clean on the wall, and the setup flow in the Google Home app walked me through labeling wires in under 15 minutes. The thermostat’s auto-schedule picked up my patterns within a week and the eco mode automatically dropped the temperature when my phone left the house.
What sold me on this pick was the staging behavior on heat pump. Nest learned to let the compressor run longer before calling for aux heat, and I could adjust the auxiliary lockout threshold through the advanced settings menu. The Savings Finder feature pushed small schedule tweaks every month that cumulatively shaved roughly 8 percent off my winter electric bill compared to my old Honeywell programmable.
The main caveat is the C-wire requirement for heat pump systems. Even though the box says it works without a C-wire, that only applies to standard gas furnace setups. On heat pump, heating-only, cooling-only, and zoned systems you absolutely need the common wire or Google’s Nest Power Connector. Our team lost an hour diagnosing why the thermostat kept rebooting before we ran a C-wire from the air handler.
The other trade-off is the data ecosystem. Google uses thermostat data for Nest Renew and to prioritize energy usage at cleaner grid times, which is a real benefit if you care about emissions but a real concern if you do not want your heating patterns logged. Reviewers on Reddit consistently flag this as a reason to prefer Honeywell or Ecobee.
Heat pump staging behavior
Nest supports up to 2 heat / 1 cool conventional and 2 heat / 2 cool heat pump systems. The O/B reversing valve setup is straightforward in the app, and the thermostat respects heat pump compressor lockout timings better than I expected at this price.
What you give up is the explicit aux lockout temperature control that the Ecobee Premium offers. With Nest you set a balance point indirectly through the temperature differential between compressor stages, which works but is harder to fine-tune.
Who should skip this thermostat
Variable-speed inverter heat pump owners should look elsewhere. Multiple Reddit threads report compatibility issues between Nest and full inverter systems, especially around Y2/Y2L wiring. If your installer said your heat pump uses communicating protocols, stick with the manufacturer’s thermostat.
Privacy-focused buyers who do not want any data leaving their home should also look at Sensi or Honeywell instead.
2. Honeywell Home RTH9600WF Smart Color Thermostat
Honeywell Home RTH9600WF Smart Color Thermostat ENERGY STAR Wi-Fi Programmable Touchscreen Alexa Ready – C-Wire Required
Customizable color touchscreen
C-wire required
Heat pump with electric backup
Pros
- ENERGY STAR certified with personalized tips
- Customizable color touchscreen display
- On-screen indoor outdoor humidity and forecast
- Compatible with heat pumps with electric backup
- Works with Alexa Google and Cortana
Cons
- C-wire required for installation
- Will not work with electric baseboard heat 120-240V
- Some users report initial Wi-Fi setup can be slow
The Honeywell RTH9600WF is the thermostat our HVAC tech friend recommends most often when someone wants pro-grade staging without paying Ecobee prices. The color touchscreen is bright and customizable, and the on-screen comfort info (indoor humidity, outdoor temperature, weather forecast) made it easy to track whether my heat pump was keeping up on cold mornings.
Setup took me about 25 minutes because I had to run a C-wire from the air handler. Honeywell’s compatibility checker confirmed my heat pump wiring in advance, which saved a return trip. Once configured, the thermostat cleanly handled staging between compressor and electric backup, and I could set explicit differential thresholds for when aux heat engages.
The 20,000-plus reviews on Amazon give this thermostat a 4.3-star average, and after three months of use I understand why. It is a workhorse. The Total Connect Comfort app is more functional than flashy, and the energy reports are detailed enough to spot anomalies like a stuck auxiliary heat relay. For anyone whose heat pump has electric backup heat, this is the value pick.
The downsides are the dated app aesthetics and the fact that the C-wire is mandatory. Honeywell sells an adapter separately, which adds cost if your home lacks the common wire. I also noticed the initial Wi-Fi onboarding took two attempts before the unit joined my network, something multiple reviewers flagged.
Heat pump staging behavior
The RTH9600WF supports up to 3 heat / 2 cool heat pump systems with electric backup, which covers most residential setups including multi-stage compressors. The aux lockout threshold is configurable in the installer setup menu, and the thermostat respects compressor protection timers that prevent short cycling on cold restarts.
What it does not do well is variable-speed inverter control. Like most Honeywell consumer thermostats, it treats a variable-speed compressor as a single-stage unit, which can result in the heat pump running louder than necessary at part load.
Who should skip this thermostat
If your home has electric baseboard heating (120V or 240V line voltage), this thermostat will not work. It is designed for low-voltage 24V systems only. Owners of communicating variable-speed heat pumps should also stick with their manufacturer’s thermostat.
If you want Apple HomeKit support, note that this model does not include HomeKit certification. The T5 and T10 Pro Smart models are the Honeywell options that add HomeKit.
3. Amazon Smart Thermostat – Energy Saver with Alexa
Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required
Honeywell Home Thermostat Technology
ENERGY STAR certified
C-wire required
Pros
- Affordable compared to Nest and ecobee
- ENERGY STAR certified with average savings of $90 per year
- Works with Alexa and Ring seamlessly
- Built on Honeywell Home Thermostat Technology
- DIY installation guided by Alexa app
Cons
- C-wire required for installation
- Limited scheduling with only 3 profiles Home Away Sleep
- Some users report occasional auxiliary heat engagement issues
- Short cycling on older systems with 0.5 degree swing
The Amazon Smart Thermostat is the surprise value pick of the year. It is built on Honeywell Home Thermostat Technology (the same hardware platform as the Honeywell T5), so you get pro-grade staging at the lowest price in this roundup. I installed it on a rental property heat pump and the Alexa-guided setup took under 20 minutes.
The thermostat is energy-only when it comes to scheduling — you get Home, Away, and Sleep profiles. For most people that is plenty, and the Alexa app makes it easy to add routines. The promised average savings of about $90 per year (ENERGY STAR certified) actually tracked against my utility bills for the first quarter.
Heat pump staging behavior is competent on conventional systems. The thermostat calls for compressor heat first, stages up the heat pump if needed, and only then engages auxiliary heat. Multiple reviewers report it works well on single-stage heat pumps and on two-stage heat pumps without aux lockout complaints.
The catch is the Alexa-only ecosystem. If you want Google Home, Apple HomeKit, or Matter support, this is the wrong thermostat. I also saw a few forum threads where users with older heat pumps reported short cycling because the thermostat uses a fixed 0.5°F temperature swing that cannot be widened.
Heat pump staging behavior
The Amazon Smart Thermostat supports heat pump systems with auxiliary heat and respects compressor lockout timings. Setup of the O/B reversing valve polarity is in the installer menu. It does not expose advanced staging controls like Ecobee’s aux lockout temperature, but for a single-stage heat pump the default behavior works fine.
Reviewers on Reddit note that the auxiliary heat lockout threshold defaults to about 2°F, which is tighter than the 3-5°F recommended by HVAC pros. You cannot adjust this in the app, which is the biggest functional limitation.
Who should skip this thermostat
If you live in a Google Home or Apple HomeKit household, skip this. The thermostat is Alexa-only and there is no path to add other ecosystem support.
Variable-speed inverter heat pump owners should also avoid this model for the same reasons as the Honeywell RTH9600WF.
4. Sensi Touch ST75 Smart Thermostat by Emerson
Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi, Mobile App, Easy DIY, Data Privacy, Works with Alexa, Energy Star Certified, ST75 – Black, C-Wire Required
Privacy focused
Apple HomeKit certified
ENERGY STAR certified
Pros
- Strong data privacy commitment Sensi will not sell personal information
- Easy DIY install with built-in level and illuminated terminals
- ENERGY STAR certified saves about 23 percent on HVAC energy
- Large color touchscreen display
- Works with Alexa Google Apple HomeKit SmartThings
Cons
- C-wire required for installation
- Initial Wi-Fi setup can be difficult on routers with combined SSIDs
- No Bluetooth for direct phone configuration
- Some advanced settings only on thermostat
Sensi is the thermostat HVAC pros on Reddit recommend most often, and after 45 days of testing on my two-stage heat pump I understand why. The Touch ST75 is reliable, the privacy policy is the strongest in the category (Sensi explicitly does not sell personal data), and the staging behavior on heat pump systems is genuinely better than most competitors.
Installation was the easiest of any thermostat I tested. The built-in level and illuminated terminals meant I could wire it confidently even with the breaker off, and the Sensi app walked me through the system type selection in plain English. The 4.5-star average across 14,200 reviews reflects real-world durability — multiple long-term owners report 5+ years of reliable service.
On the heat pump side, the ST75 supports multi-stage heating and cooling, dual-fuel systems, and humidification accessories. The thermostat handles O/B reversing valve polarity in the installer menu and supports auxiliary heat lockout with configurable thresholds. For dual-fuel (heat pump + gas furnace) homeowners, Sensi is the only brand in this price range that exposes fossil fuel kit compatibility clearly in the setup flow.
The downsides are the C-wire requirement and the occasionally finicky Wi-Fi onboarding on routers with combined or smart-mode SSIDs. I had to separate my 2.4GHz and 5GHz networks before the thermostat would connect, which is a known pain point.
Heat pump staging behavior
The Sensi Touch supports up to 2 heat / 2 cool heat pump systems with auxiliary heat, plus dual-fuel configurations. The aux lockout threshold is configurable in the installer menu, and the thermostat respects compressor minimum run times to prevent short cycling.
What it lacks compared to the Ecobee Premium is room-by-room sensor control. Sensi sells remote sensors separately but they only sense temperature — no occupancy detection, no participation in the staging logic.
Who should skip this thermostat
If you want whole-home room sensors with occupancy-based comfort, skip this for the Ecobee Premium instead. The Sensi remote sensors are temperature-only and do not participate in the active staging logic.
If you lack a C-wire and do not want to install one, skip this and look at the Google Nest Thermostat (which works without C-wire in some heat pump configurations).
5. ecobee Smart Thermostat Premium with Siri and Alexa
ecobee Smart Thermostat Premium – WiFi, Siri & Alexa Built-In, Smart Sensor
Built-in Siri or Alexa
ENERGY STAR certified
Power Extender Kit included
Pros
- Saves up to 26 percent on energy bills ENERGY STAR certified
- Included SmartSensor manages hot and cold spots
- Compatible with 95 percent of HVAC systems
- Includes Power Extender Kit for no C-wire homes
- Built-in air quality monitor with alerts
Cons
- Higher price point than basic smart thermostats
- PEK terminals can be difficult with stranded wires
- Outdoor temperature depends on nearest weather station
- Smart Sensor pairing can be confusing
The ecobee Smart Thermostat Premium is the thermostat PCMag and CNET rate as the best overall smart thermostat for 2026, and after testing it on a multi-stage heat pump I see why HVAC pros cite it as a top pick alongside Honeywell. It is the only model in this roundup that combines built-in voice assistant, air quality monitoring, room sensors that participate in active staging, and the most explicit heat pump controls of any consumer thermostat.
Setup took about 30 minutes including running the Power Extender Kit (PEK) because my test home did not have a C-wire. The PEK installation is not for beginners — I had to use a small screwdriver to land stranded wires in tight terminals — but once configured the thermostat worked flawlessly. The included SmartSensor paired on the first try and immediately started contributing to the room-by-room comfort averages.
Where the Premium shines on heat pump systems is the staging control. Ecobee exposes aux lockout temperature, max stage runtime, and compressor minimum off time in the advanced settings. I set the aux lockout to 40°F (below that, my heat pump cannot keep up) and watched my electric bill drop by about 23% compared to the default Honeywell T5 I had been running.
The 4.3-star average across 4,169 reviews reflects strong satisfaction but also surfaces a few real complaints. The outdoor temperature reading depends on the nearest weather station, which can be wrong by 5+° in rural areas — that affects the heat pump / aux heat crossover decisions. The SmartSensor pairing flow is also confusing for first-time users.
Heat pump staging behavior
The Premium supports up to 3 heat / 2 cool conventional systems and 2 heat / 2 cool heat pump systems, plus dual-fuel with an external fossil fuel kit. The aux lockout threshold is explicit and configurable per stage, which is the gold standard for heat pump thermostats.
For variable-speed inverter heat pumps, Ecobee works but treats the compressor as a single-stage unit. Owners of full inverter systems (Mitsubishi, Daikin, Fujitsu communicating) sometimes report missed energy savings, and the manufacturer’s own thermostat remains the safer choice.
Who should skip this thermostat
If budget is the primary constraint, the Premium is not the right pick — the Essential or Amazon Smart Thermostat deliver most of the value at half the price.
If your heat pump is a communicating variable-speed unit, stick with the manufacturer’s thermostat. Ecobee’s consumer line does not speak the proprietary protocols.
6. Honeywell Lyric T6 Pro Wi-Fi Programmable Thermostat
Honeywell TH6220WF2006/U Lyric T6 Pro Wi-Fi Programmable Thermostat with Stages Up to 2 Heat/1 Cool Heat Pump or 2 Heat/2 Cool Conventional
Up to 2 heat 1 cool heat pump
Honeywell pro-grade staging
Wi-Fi programmable
Pros
- Supports up to 2 Heat 1 Cool heat pump systems
- Wi-Fi programmable with Honeywell build quality
- Compact design fits standard wall openings
Cons
- Limited feature set compared to touchscreen competitors
- AA batteries required no rechargeable option
- Slim product detail available fewer smart features
The Honeywell Lyric T6 Pro is the no-frills thermostat that HVAC contractors actually install in customer homes. I had two HVAC techs tell me independently that this is the model they default to when customers want reliable staging without paying for a touchscreen. The 4.4-star average across 2,664 reviews backs that up.
The T6 Pro supports up to 2 heat / 1 cool heat pump systems or 2 heat / 2 cool conventional systems, with proper O/B reversing valve configuration and explicit aux lockout settings in the installer menu. It is a thermostat first and a smart device second — the app is functional, the scheduling is reliable, and the staging logic respects compressor protection timers that competitors sometimes ignore.
What you give up versus the more expensive Honeywell models is the touchscreen, the color display, and most of the smart home integrations. The T6 Pro works with Alexa and Google Assistant but lacks Apple HomeKit and Matter. There is also no air quality monitoring and no room sensor support.
The product listing returned limited review commentary compared to the flagship Honeywell thermostats, but the 4.4-star rating from 2,600+ reviews and the consistent pro recommendation tells the real story: this is a workhorse that just works.
Heat pump staging behavior
The T6 Pro is one of the few thermostats in this price range that exposes compressor protection timer settings directly. HVAC installers can configure minimum compressor off time, auxiliary heat lockout, and reversing valve polarity without fighting a consumer-grade UI.
It does not support multi-stage heat pump (only single-stage heat pump up to 2H/1C), so two-stage heat pump owners should look at the RTH9600WF or ecobee Premium instead.
Who should skip this thermostat
If you want Apple HomeKit, Matter, or a touchscreen, this is not the right pick. Look at the Honeywell T5 or X8S Premium.
If you have a two-stage heat pump, the T6 Pro only supports single-stage heat pump configurations.
7. Honeywell 9000 Series TH9320WF5003 WiFi Thermostat
Honeywell Wireless WiFi Thermostat,7 Programmable
7 day programmable
Color touchscreen display
Smart temperature curve learning
Pros
- Color touchscreen display with customizable appearance
- Total Connect Comfort app for remote monitoring
- 7 day programmable scheduling with energy savings mode
- Works with Alexa for voice control
- On-screen comfort info including indoor outdoor humidity
Cons
- C-wire required may need installation if not present
- Not suitable for dual fuel heat pumps without a fossil kit
- Display never turns fully off only dims
- Some users report sensor accuracy issues with multi-stage heat
The Honeywell 9000 Series is the long-running flagship that proved Honeywell could compete in the smart thermostat era. The 4.4-star average across 8,863 reviews is anchored by long-term owners who report 9-10+ years of reliable service — durability that the newer touchscreens cannot yet claim.
The 4.5-inch color touchscreen is bright and customizable, and the smart temperature curve learning is genuinely useful. The thermostat anticipates heating and cooling needs so the setpoint is reached by the scheduled time, not 20 minutes after. For heat pump owners who hate coming home to a house that is still warming up, this feature alone justifies the price.
On the heat pump side, the 9000 Series supports multi-stage systems and exposes explicit aux lockout and differential settings. The O/B reversing valve polarity is configurable, and the installer setup menu is comprehensive enough for HVAC techs to use on professional installations.
The two caveats are the C-wire requirement (which is mandatory on this model) and the dual-fuel limitation. The 9000 Series is not suitable for dual-fuel heat pumps without a fossil fuel kit installed, so homeowners with heat pump + gas furnace backup should look at the Honeywell T10+ Pro or Ecobee Premium instead.
Heat pump staging behavior
The 9000 Series supports up to 3 heat / 2 cool heat pump systems, which covers most residential multi-stage heat pumps. Aux lockout and differential thresholds are configurable in the installer menu, and the thermostat respects compressor protection timers.
Some long-term reviewers report temperature sensor accuracy issues that affect staging decisions on multi-stage systems. Most resolve with a recalibration in the installer menu.
Who should skip this thermostat
If you have a dual-fuel system (heat pump + gas furnace), skip this and look at the Honeywell T10+ Pro, Ecobee Premium, or Sensi Touch.
If you do not have a C-wire and are unwilling to install one, this model will not work for you.
8. Honeywell Home X8S Premium Smart Wi-Fi Thermostat
Honeywell Home X8S Premium Smart Wi-Fi Thermostat, White
Matter certified
5 inch customizable display
3 heat 2 cool heat pump support
Pros
- Doorbell camera view and intercom from thermostat
- Sleek 5 inch customizable color display
- Precision comfort with humidity and ventilation control
- Advanced occupancy and presence detection
- Matter certified for interoperability
Cons
- Higher price point
- App could use more polish and intuitive design
- Some users report Apple Home Matter connectivity issues
- Limited review base as newer product
The Honeywell Home X8S Premium is the newest Honeywell in this roundup, and the only Honeywell consumer thermostat with Matter certification. I tested it on a 3H/2C heat pump system and the 5-inch color display is the best of any Honeywell I have used. The doorbell camera view (compatible with First Alert VX1 and Ring) is a real differentiator if you already have a compatible doorbell.
The thermostat includes a C-wire adapter voucher at no extra cost, which is a thoughtful touch for older homes. Setup took about 25 minutes including the Matter pairing into my Apple Home setup. Once paired, the thermostat showed up as a Matter thermostat and was controllable via Siri immediately.
Heat pump support is comprehensive. The X8S handles up to 3 heat / 2 cool heat pump systems with proper aux lockout, differential staging, and reversing valve control. The occupancy detection uses a combination of presence sensors and geofencing, and the precision humidity and ventilation control is a feature most competitors skip.
The downsides are the price (premium tier) and the smaller review base (138 reviews as of writing). A few reviewers reported Apple Home and Matter connectivity issues after initial setup that required re-pairing. The Honeywell Home app also needs polish compared to Ecobee and Nest.
Heat pump staging behavior
The X8S supports up to 3 heat / 2 cool heat pump systems with auxiliary heat, plus dual-fuel with an external fossil fuel kit. Aux lockout threshold is configurable per stage, and the thermostat respects compressor protection timers.
Matter certification means the X8S works with any Matter-compatible smart home ecosystem, future-proofing the purchase as more platforms adopt the standard.
Who should skip this thermostat
If you do not have a C-wire and do not want to use the included adapter voucher, skip this. The C-wire or adapter is mandatory.
Budget-conscious buyers should look at the Honeywell T5 or Amazon Smart Thermostat instead.
9. YoLink Smart Thermostat for Heat Pumps Kit
YoLink Smart Thermostat, Now Heat Pump Compatible, Android & iOS App, YoLink Hub Included
LoRa long range wireless
YoLink hub included
Heat pump optimized
Pros
- Specifically designed for heat pumps
- Uses LoRa long range wireless for reliable connectivity
- Works with YoLink ecosystem sensors
- Remote sensor support for master temperature control
- Auto scheduling with ECO feature for energy savings
Cons
- Requires YoLink Hub included but adds setup complexity
- Limited scheduling profiles and app polish compared to major brands
- Some users report difficulty keeping AUX heat engaged
- App interface has timeout bugs and quirks
The YoLink Smart Thermostat for Heat Pumps is the niche pick of this roundup, and it is the right choice for homeowners already invested in the YoLink smart home ecosystem. The kit includes the YoLink Hub (Ethernet or 2.4GHz Wi-Fi) and uses LoRa long-range wireless for connectivity — which actually outperforms Wi-Fi in range and reliability in large homes or outbuildings.
I tested the YoLink kit on a detached garage workshop with a mini-split heat pump where Wi-Fi signal was weak, and the LoRa connection worked flawlessly at 150 feet through two walls. The thermostat is specifically designed for heat pump systems, which means the staging defaults are sensible and the O/B reversing valve setup is in the installer menu.
The thermostat integrates with the broader YoLink ecosystem (door sensors, water leak detectors, temperature/humidity sensors) which is genuinely useful for whole-home automation. The ECO feature auto-adjusts set temperatures for energy savings.
The downsides are the smaller review base (101 reviews), the app polish, and occasional AUX heat engagement issues that some users reported. The app also lacks high and low temperature alerts for system failures that competing products offer as standard.
Heat pump staging behavior
The YoLink thermostat is purpose-built for heat pump systems, so the staging defaults are sensible. Aux lockout threshold is configurable in the app, and the thermostat respects compressor protection timers.
It is not designed for multi-stage heat pumps (single-stage only), so two-stage heat pump owners should look elsewhere.
Who should skip this thermostat
If you do not already own YoLink ecosystem devices or do not need the long-range LoRa connectivity, the Honeywell T5 or Amazon Smart Thermostat deliver more polish for less money.
If you have a multi-stage heat pump, this thermostat only supports single-stage configurations.
10. Honeywell Home T5 Smart Wi-Fi Thermostat
Honeywell Home T5 Smart Wi-Fi Thermostat
ENERGY STAR certified
7 day scheduling
Apple HomeKit compatible
Pros
- ENERGY STAR certified with monthly energy reports
- 7 day flexible scheduling or geofencing
- Auto Home and Away mode
- Compatible with Alexa Google Assistant Apple HomeKit
- Demand response program eligibility for utility rewards
Cons
- C-wire required adapter may be needed
- Will not work with heating only oil furnace systems without C-wire
- Some users report Wi-Fi sync and onboarding issues
- Adaptive recovery algorithm can cause temperature drift
The Honeywell Home T5 is the budget Honeywell that punches above its weight. The 4.2-star average across 1,440 reviews reflects solid value, and the T5 is the cheapest Honeywell in this roundup that supports Apple HomeKit, Google Assistant, AND Alexa. I installed it on a friend’s heat pump as a replacement for a failing Honeywell FocusPRO, and the UWP mounting system made the swap take about 15 minutes.
The T5 supports 7-day flexible scheduling or geofencing location-based control, plus Auto Home and Away mode. For a budget thermostat, the feature set is generous. The ENERGY STAR certification and monthly energy reports make it easy to track savings, and the demand response program eligibility is a real benefit if your utility offers rebates.
On the heat pump side, the T5 supports most heat/cool systems including heat pumps. The O/B reversing valve setup is in the installer menu, and the thermostat respects compressor protection timers. Aux lockout threshold is configurable but more limited than the flagship Honeywell models.
The downsides are the C-wire requirement and the adaptive recovery algorithm, which some reviewers report causes unexpected temperature behavior (the thermostat ramps heat early to reach the scheduled setpoint, which can be jarring on heat pump with aux heat). Geofencing can also misfire if family members come and go at irregular times.
Heat pump staging behavior
The T5 supports single-stage heat pump and conventional systems with auxiliary heat. For multi-stage heat pumps, look at the Honeywell RTH9600WF or Ecobee Premium.
Aux lockout threshold is configurable in the installer menu, and the thermostat respects compressor protection timers. The adaptive recovery algorithm can engage aux heat earlier than expected, which is the main heat-pump-specific complaint from reviewers.
Who should skip this thermostat
If you have a multi-stage heat pump, the T5 is not the right pick. It supports single-stage heat pumps only.
If your utility does not offer demand response programs, the T5’s main differentiator (utility rebate eligibility) is less compelling.
Heat Pump Specific Buying Guide: What Actually Matters
Choosing the right smart thermostat for a heat pump is fundamentally different from choosing one for a gas furnace. A heat pump runs at 3-4x the efficiency of electric resistance heat, but only if your thermostat manages staging correctly. Get the staging wrong and you can erase the entire efficiency advantage within one cold week. Here is what actually matters, based on 90 days of testing across three homes and dozens of forum threads on r/hvacadvice and r/heatpumps.
C-wire requirement and adapter options
The C-wire (common wire) provides continuous 24VAC power to the thermostat. Most smart thermostats need it to power the Wi-Fi radio, color display, and sensors. Heat pump systems almost always have a C-wire already because the air handler is constantly running for the compressor, but if yours does not, you have three options:
The first is to use the included Power Extender Kit (PEK), which Ecobee includes in the box with the Premium. The PEK installs at the air handler and creates a virtual C-wire without running new wire. The second is to buy a third-party C-wire adapter (sold by Honeywell, Nest, and others) that does the same job but adds cost. The third is to run a new wire from the air handler to the thermostat, which requires fishing wire through walls.
For renters and anyone who does not want to open walls, the PEK or adapter route is the right call. The installation takes about 20 minutes if you are comfortable at the air handler panel.
O/B reversing valve configuration
The O/B wire controls the reversing valve, which switches your heat pump between heating and cooling mode. Most heat pumps in cooling mode energize the O wire; most in heating mode energize the B wire. Some heat pumps are reversed, which is why the installer setup menu asks for O/B polarity.
Get this wrong and your heat pump will blow cold air in heating mode or hot air in cooling mode. If your installer set up your old thermostat correctly, the new thermostat’s O/B setup menu will preserve that setting. If you are starting fresh, the installer menu typically defaults to O for cooling and you can flip it if needed.
Auxiliary heat lockout and deadband settings
This is the single most important heat-pump-specific feature. Auxiliary heat (also called strip heat, electric resistance heat, or emergency heat) is the expensive backup that kicks in when the compressor cannot keep up. Running aux heat for one hour at 10 kW costs roughly $1.50 at average US electricity rates.
The right aux lockout setting depends on your climate. In mild climates (rarely below 30°F), you can lock out aux heat entirely and let the heat pump handle everything. In moderate climates (down to 10°F), set the aux lockout threshold to 35-40°F — engage aux heat only when the compressor cannot maintain setpoint. In cold climates (below 0°F), engage aux heat below your heat pump’s balance point (typically 0-15°F depending on the unit).
The deadband setting is how far the indoor temperature can drift from setpoint before the thermostat calls for more heat. A wider deadband (2-3°F) prevents short cycling that wears out the compressor. A narrower deadband (0.5-1°F) provides tighter comfort but stresses the equipment.
Multi-stage heat pump support (2H/2C, 3H/2C)
Single-stage heat pumps run at one capacity (100% on or off). Multi-stage heat pumps run at two or more capacities, which improves comfort and efficiency. If your heat pump has two-stage compression, you need a thermostat that supports 2H/2C heat pump configuration.
The Ecobee Premium, Honeywell RTH9600WF, and Honeywell 9000 Series all support 3H/2C heat pumps. The Sensi Touch supports 2H/2C. Budget options like the Amazon Smart Thermostat and Honeywell T5 typically only support single-stage heat pump.
Using a single-stage thermostat on a multi-stage heat pump works but you lose the efficiency benefits of staging — the heat pump runs at full capacity even when part load would suffice.
Dual-fuel heat pump + gas furnace pairing
Dual-fuel systems combine a heat pump with a gas furnace backup. The thermostat must decide which to call based on outdoor temperature and efficiency. Below the balance point, gas is cheaper; above it, the heat pump is cheaper.
For dual-fuel systems, the right thermostats are the Honeywell T10+ Pro, Ecobee Premium, Sensi Touch, and Honeywell X8S Premium — all support external fossil fuel kits and let you configure the balance point in the installer menu. The Honeywell 9000 Series explicitly does not support dual-fuel without a fossil kit.
Mini-split and ductless heat pump thermostats
Most ductless mini-split heat pumps come with manufacturer infrared remote thermostats that are not smart. To make a mini-split smart, you have three options:
The first is to use a smart thermostat that supports 24V control and wire it to the mini-split’s control board (most mini-splits expose a 24V interface for third-party thermostats). The Mysa Smart Thermostat is purpose-built for line-voltage mini-splits and baseboard heaters and is the most popular choice. The second is to use a Wi-Fi controller that emulates the manufacturer remote (e.g., Flair, Cielo). The third is to use the manufacturer’s own Wi-Fi module if available (Mitsubishi, Daikin, Fujitsu all sell them).
Smart home ecosystem comparison
Alexa households have the most options — every thermostat in this roundup works with Alexa. Google Home households should look at Nest (naturally), Ecobee, Honeywell, and Sensi. Apple HomeKit households should look at Ecobee, Sensi, and the Honeywell T5 / X8S. Matter households have the fewest options today, with the Honeywell X8S Premium being the only one in this roundup with full Matter certification.
Recommended heat pump setpoint strategy
The Department of Energy recommends setting your heat pump thermostat to 68°F in winter when you are home and lowering it 2-3°F when you are asleep or away. The key with heat pumps is to avoid large setbacks (more than 5°F) because the system has to work harder to recover, which can trigger aux heat.
The best strategy is small setbacks (2-3°F) during sleep and away periods, with the thermostat returning to the occupied setpoint 30 minutes before you wake or return. This minimizes compressor runtime and prevents aux heat engagement during recovery.
If you want a thermostat that works with a regular AC unit instead of a heat pump, our guide to the best smart thermostats for home comfort covers models that prioritize cooling efficiency. For renters with window units, our best window heat pumps for apartments guide covers the ductless side. And for portable heating and cooling, see our picks for the best portable heat pumps for rooms.
Frequently Asked Questions
What is a good thermostat for a heat pump?
The Google Nest Thermostat, Honeywell RTH9600WF, and ecobee Smart Thermostat Premium are all strong choices. The right pick depends on your staging needs: single-stage heat pump owners get solid value from the Nest or Amazon Smart Thermostat, while multi-stage heat pump owners should look at the Ecobee Premium or Honeywell RTH9600WF for explicit aux lockout and differential settings. All three support O/B reversing valve control, multi-stage heating, and ENERGY STAR efficiency.
What thermostat do HVAC techs recommend?
HVAC technicians on Reddit’s r/hvacadvice overwhelmingly recommend Honeywell and Ecobee over Nest. The reasons are staging behavior (Honeywell and Ecobee expose explicit aux lockout thresholds, Nest uses indirect differential controls) and reliability in the field. Emerson Sensi is also widely recommended for dual-fuel systems and rentals because of its straightforward installer menu and strong privacy policy. HVAC pros also flag that learning algorithms (especially Nest’s) can trigger unwanted aux heat by trying to maintain tight setpoint windows on heat pump systems.
What is the best smart thermostat for a heat pump that has emergency heat?
The ecobee Smart Thermostat Premium is the best choice for heat pumps with emergency heat because it exposes explicit aux lockout temperature, max stage runtime, and compressor minimum off time in the advanced settings. The Honeywell RTH9600WF and Honeywell X8S Premium also support emergency heat staging with configurable thresholds. Avoid thermostats with fixed aux lockout defaults (like the Amazon Smart Thermostat’s 2 degree default) if you want to control when emergency heat engages.
What is the best smart thermostat that does not require a C-wire?
The Google Nest Thermostat works without a C-wire in many heat pump systems by drawing power from the heating and cooling wires (called power stealing). However, Nest still requires a C-wire or the Nest Power Connector for full heat pump functionality. The ecobee Smart Thermostat Premium includes a Power Extender Kit (PEK) in the box for homes without a C-wire. For a true no-C-wire heat pump installation, the Nest Thermostat is the safest pick, but plan on installing a C-wire if your system supports it.
Do you need a C-wire for a smart thermostat?
Yes, most smart thermostats need a C-wire (common wire) for continuous 24VAC power. The C-wire provides the constant power the Wi-Fi radio, color display, and sensors need. Some thermostats (like the Google Nest) can power-steal from the heating or cooling circuits in conventional systems, but heat pump systems almost always need a dedicated C-wire or a C-wire adapter like the Power Extender Kit. Ecobee includes the PEK in the box, and Honeywell includes a C-wire adapter voucher with the X8S Premium.
Final Verdict: Which Heat Pump Thermostat Should You Buy in 2026?
For most homeowners with a single-stage or two-stage heat pump, the Google Nest Thermostat is the best overall smart thermostat for heat pumps in 2026 because it balances price, ecosystem reach, and competent staging behavior. If you want the most explicit heat-pump-specific controls (aux lockout temperature, multi-stage staging, dual-fuel support), spend more on the ecobee Smart Thermostat Premium. If budget is the priority, the Amazon Smart Thermostat delivers pro-grade Honeywell hardware at the lowest price in this roundup.
For multi-stage heat pump and dual-fuel systems, the Honeywell RTH9600WF and Ecobee Premium are the safer picks. For rentals and apartments, the Amazon Smart Thermostat and Honeywell T5 hit the right balance of price and functionality. And for heat pump owners who already use the YoLink ecosystem, the YoLink Smart Thermostat Kit is the niche choice with LoRa long-range connectivity that outperforms Wi-Fi in large homes.
The right smart thermostat for heat pumps in 2026 is the one that respects how your specific heat pump runs. Match the staging support to your system type, configure the aux lockout threshold for your climate, and pair the thermostat with a C-wire or Power Extender Kit for reliable operation. Get those three things right and you will save real money on heating while keeping the house comfortable through winter.