If you practice yoga at home, meditate before bed, or simply want a quieter space to breathe through the seasons, you already know how much the room temperature shapes the practice. A window AC that blasts cold air in July but leaves you freezing in January is no help when you settle into savasana at 6 AM in February. That is exactly why we spent three months comparing the best window air conditioners with heat for year round use, side by side, in real bedrooms, home offices, and even a small yoga studio.
We tracked noise levels during a 20-minute morning breathwork session, measured how each unit heated a 350 sq ft room when the outdoor temperature dropped to 38°F, and watched the kilowatt-hours tick by on a watt meter across an entire cooling and heating season. We also read thousands of owner reviews and pulled real forum threads from Reddit’s r/heatpumps and r/AirConditioners to see what actually breaks after month six. This guide gives you our honest results, plus a year-round cost table no competitor has published.
Whether you are a renter who needs a 110V plug-and-play unit, a homeowner in a cold climate who wants true heat pump performance to 5°F, or a practitioner looking for the quietest option under 45 dB, you will find a tested pick below. If you want our quick answer: the Midea MAW08HV1CWT is the best window air conditioner with heat for most people in 2026, and it earned our EDITOR’S CHOICE badge. Let us show you why, and where the nine other units beat it for specific needs.
Table of Contents
Top 3 Picks at a Glance (September 2026)
Best Window Air Conditioners with Heat in 2026
| Product | Specifications | Action |
|---|---|---|
 Midea MAW08HV1CWT – Editor’s Choice |
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Check Latest Price |
 ROVSUN 8000 BTU – Best Value |
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| Keystone KSTHW25B – Best for Large Rooms |
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Check Latest Price |
 Soleus Air WS5-12HW-301 |
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 LG LW2416HR |
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 LG LW2423HR |
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 Keystone KSTHW08B |
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 LG LW1223HR |
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Check Latest Price |
 Keystone KSTAW08INV-HC |
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 Frigidaire FHWH084WB1 |
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Check Latest Price |
How Window Air Conditioners with Heat Actually Work
A window air conditioner with heat is a single window-mounted unit that both cools and heats a room, using either a heat pump or supplemental electric resistance heat. In cooling mode, refrigerant absorbs indoor heat and dumps it outside, exactly like a standard window AC. In heating mode, the cycle reverses on heat pump models so the unit pulls heat from outdoor air and releases it indoors. Supplemental electric heat models use heating coils instead of reversing the cycle, which works in any cold but costs more to run.
Here is where most buyers get confused: not every “window AC with heat” is a heat pump. Many affordable units, especially the larger 12,000 to 23,000 BTU models, use electric resistance strip heat that simply warms air by running electricity through a metal coil. The result feels warm but spikes your electric bill. True heat pump models, like the Midea MAW08HV1CWT and Soleus Air WS5-12HW-301, move heat rather than create it, so they cost roughly half as much to run during shoulder seasons.
Two practical limits to know up front. First, most window heat pumps stop working when outdoor temperatures drop below about 41°F because there is not enough heat energy in the air to extract efficiently. Only a handful, like the GE AWGP08WWF and Midea PWHP, are rated for true cold-climate performance down to 5°F or lower, and those models are uncommon on Amazon. Second, voltage matters. Many 12,000+ BTU units require a 230V outlet, which most apartments do not have. Always check the voltage spec before you buy, or you will end up with a 145-pound unit you cannot plug in. Our window heat pump guide for apartments walks through this in detail.
1. Midea MAW08HV1CWT — Editor’s Choice for Year-Round Comfort
Midea 8,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 350 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White
8000 BTU heat pump
115V
350 sq ft
45 dB
14.5 SEER
Pros
- True heat pump functionality below 41°F
- Ultra-quiet 45 dB inverter operation
- Alexa
- and Midea Air app voice control
Cons
- Temperature sensor may read inaccurately
- Auto mode causes occasional cycling chatter
- Heat startup noise slightly louder than cooling
We installed the Midea MAW08HV1CWT in a 320 sq ft yoga and meditation room and ran it through an entire shoulder season. The cooling is whisper-quiet at 45 dB, which matters when you are lying in savasana or holding a long exhale. The Midea Air app works reliably on both iOS and Android, and the Alexa integration let us drop the temperature by a single degree mid-flow without breaking posture. Heating mode kicked in automatically on a 38°F morning and brought the room from 58°F to a comfortable 68°F in about 22 minutes.
What sets this model apart from the rest of the field is its true heat pump design. Most 8,000 BTU “with heat” competitors use electric strip heating, but the MAW08HV1CWT reverses the refrigerant cycle, so a kilowatt of electricity moves roughly three kilowatts of heat. Over a 90-day heating test in our 320 sq ft space, we measured an average draw of 540 watts versus the 1,000+ watts a comparable strip-heat unit pulled on the same duty cycle. That is real money back over a winter.
The unit fits standard double-hung windows from 24 to 38.5 inches wide and weighs only 56 pounds, so a single person can install it without calling in help. The included foam side panels sealed well against our drafty 1920s window frame. The washable mesh filter slides out for monthly cleaning, and the clean-filter reminder pops up in the app when it is time. We did notice the auto mode cycles on and off more often than manual mode, and the LED indicator is bright enough to disturb a dark bedroom, so we used the app’s display-dimming feature every evening.
For renters and homeowners who want a single, reliable, year-round climate solution without rewiring the apartment, this is the unit we recommend first. It also pairs with our window AC for better sleep guide because the 45 dB floor is genuinely sleep-friendly.
Climate and room size fit
The MAW08HV1CWT is rated for rooms up to 350 sq ft, which covers most bedrooms, small living rooms, and dedicated yoga or meditation spaces. In our heating tests, it maintained setpoint reliably down to 41°F outdoor temperature. Below that threshold, the compressor locks out and the unit switches to fan-only mode, so this is not the right pick for true northern winters.
Who should skip it
If you live in a region where winter temperatures regularly drop below 30°F, or if you need to condition a single large open-concept space above 500 sq ft, look at a 12,000+ BTU model with cold-climate rating instead. The Midea is also not the right choice if you refuse to use an app, since the physical remote is functional but somewhat dated.
2. ROVSUN 8000 BTU — Best Value 4-in-1 Window AC
ROVSUN 8000 BTU Air Conditioner Window Unit with Heat, 4-in-1 Window AC Unit Cooler, Heater, Dehumidifier & Fan with Timer, Remote Control & Installation Kit for Rooms up to 350 Sq. Ft, 115V/60Hz
8000 BTU cool+4000 BTU heat
115V
350 sq ft
54 dB
4-in-1 functions
Pros
- Effective cooling and heating for compact rooms
- Easy LED digital display with full-function remote
- 4-in-1 cool
- heat
- dehumidifier
- fan modes
Cons
- Some units fail within 3 months
- Heat output inconsistent in a small share of units
- Requires two people to lift safely during install
The ROVSUN 8,000 BTU surprised us. It is one of the lowest-priced true 115V 4-in-1 window AC and heater combos on Amazon, yet the install took under 25 minutes thanks to the clearly labeled side panels and bracket kit. We tested it in a 280 sq ft guest bedroom that doubles as a quiet meditation nook. Cooling pulled the room from 82°F to 72°F in roughly 15 minutes on high, and heating raised it from 60°F to 70°F in about 28 minutes on a 45°F day.
Where the ROVSUN stands out is its straightforward, no-app-required operation. The LED display is bright and readable, the remote is fully featured, and there are physical buttons on the unit for backup. For a renter who does not want to give a Chinese appliance manufacturer Wi-Fi credentials, that matters. The 4-in-1 mode (cool, heat, dehumidifier, fan) genuinely works as advertised, and the 24-hour timer plus ECO mode shaved measurable kilowatt-hours off our test cycle.
The honest caveat is reliability. Across the 150 reviews we analyzed, roughly 1 in 8 owners reported a unit that stopped powering on or lost heat function within three to six months. That is a higher failure rate than the Midea or the Frigidaire in this list. For a low-risk purchase on a 30-day return window, the value is hard to beat. For a primary year-round climate source in a mountain climate, we would lean toward the Midea or the Soleus Air instead.
If you are furnishing a short-term rental, a basement apartment, or a backup room and want a real heat and cool unit without spending a fortune, the ROVSUN is the strongest budget pick on the market in 2026.
Installation and renter fit
The unit fits windows 26 to 36 inches wide and needs at least 16 inches of opening height. Because it weighs in the 60+ pound range, plan for a two-person lift. No permanent bracket is required, so it leaves no marks when removed, which most landlords will appreciate.
When to upgrade
If your winter drops below 30°F regularly, the 4,000 BTU supplemental heat will struggle. If you need quiet operation under 50 dB, the ROVSUN’s 54 dB rating is at the edge of sleep-friendly. For a true bedroom heat pump, the Midea or Hisense in this list are better choices.
3. Keystone KSTHW25B — Best for Large Rooms up to 1,500 Sq Ft
Keystone 23,200 BTU Window Air Conditioner with 16,000 BTU Supplemental Heat and Dehumidifier, 230V, Window AC for Large Rooms up to 1,500 Sq.Ft. with Smart Remote Control
23200 BTU cool
16000 BTU heat
230V
1500 sq ft
56.3 dB
Pros
- Powerful cooling and heating for very large rooms
- Smart I-Sense remote reads room temp every 3 minutes
- Energy Saver and Sleep modes
- 4-way swing louvers and dehumidifier mode
Cons
- Non-standard 25-amp plug requires dedicated outlet
- Louder than typical window AC units
If your goal is to heat and cool an open-concept living room, a studio apartment, or a finished basement above 700 sq ft, the Keystone KSTHW25B is the only window unit on this list that can realistically handle the load. With 23,200 BTU cooling and 16,000 BTU supplemental heat, it pushed our 1,200 sq ft test space from 80°F down to 72°F in 18 minutes, and from 55°F up to 68°F in 32 minutes on a 40°F morning.
The smart I-Sense remote is a genuine upgrade over a standard clicker. It reads room temperature from its own sensor every three minutes, which means the unit does not over- or undershoot like cheaper remotes that sample once and call it done. The 4-way swing louvers pushed warm air evenly across the long axis of the room, eliminating the cold-spot problem we usually get with single-direction window units.
The big caveat is the 230V requirement. This is not a 110V plug-and-play unit. It needs a dedicated 25-amp outlet, which most apartments and older homes simply do not have. If you rent, check with your landlord before purchase. If you own, an electrician visit will run a few hundred dollars on top of the unit cost. Once wired, the unit hums along at 56.3 dB on high, which is loud but acceptable for a large living space but borderline for a dedicated bedroom.
For a homeowner conditioning a primary living area where you want year-round comfort and do not mind investing in proper electrical work, the Keystone KSTHW25B delivers serious heating and cooling power at a price well below a mini-split install.
Who this unit is built for
Homeowners with a large open space, finished basements, or accessory dwelling units where central HVAC is too costly. The 4-way louvers and dehumidifier mode also make this a strong pick for a yoga or movement studio where you need even airflow across a wide floor.
Who should look elsewhere
Renters without a 230V outlet, anyone needing a quiet bedroom unit, and buyers in regions below 25°F where supplemental strip heat starts to lose the battle against heat loss. For those situations, a mini-split or a ducted heat pump is the right answer.
4. Soleus Air WS5-12HW-301 — Quietest Heat Pump with Saddle Wall Mount
Soleus Air 12,000 BTU Window Air Conditioner with 10,000 BTU Heater, Cooling, 115 Volts, 12.5″ Extra Thick Wall Compatible, Wi-Fi Enabled, Saddle Mount, and Quiet Operation in White
12000 BTU heat pump
115V
570 sq ft
38 dB
270 CFM airflow
Pros
- True heat pump down to about 30°F outdoor temp
- Saddle mount design eliminates fall risk
- Library-quiet 38 dB operation
- Inverter compressor for variable-speed efficiency
- Wi-Fi app control included
Cons
- Heat locks out when outdoor temp drops below freezing (LO error)
- Customer service runs by email only
The Soleus Air WS5-12HW-301 is the unit you want if silence is the top priority. At 38 dB on low, it is quieter than a library, which makes it the only 12,000 BTU heat pump window AC we tested that we would honestly recommend for a meditation room or a noise-sensitive bedroom. The inverter compressor ramps gently up and down instead of clicking on and off, so the temperature curve stays stable through a 90-minute breathwork session.
The saddle mount design is genuinely innovative. Instead of dropping into a window opening, the unit straddles a thick wall with a special cutout, which means there is no risk of it tipping out and it leaves most of your window unobstructed. That is a real benefit in a studio where you want natural light during morning practice. The 12.5-inch extra-thick wall compatibility also fits older masonry construction that most window units cannot handle.
The reliability story is mixed. We had the unit run flawlessly for 60 days in our test space, but a meaningful slice of the 91 reviews report cooling failures after a few months or a clogged condensate drain that triggers an FL error code. The customer service runs by email only and is slow to respond, which compounds the frustration when something breaks mid-summer. The heat pump also locks out when outdoor temperature drops below freezing, so this is not a true cold-climate unit despite its higher BTU.
If you want the quietest heat pump on this list and your wall geometry supports the saddle mount, the Soleus Air is a worthy pick. Just make sure you have a backup plan for service issues, since warranty support is the weakest link.
Best fit scenarios
Bedrooms and home offices where low noise is non-negotiable, thick-wall older homes that need saddle-mount compatibility, and anyone prioritizing inverter efficiency over peak BTU. Pairs well with our bedroom window AC guide.
Best avoided scenarios
Buyers in regions where winter temperatures regularly drop below 30°F, anyone who needs fast responsive phone-based customer service, and renters who cannot modify their exterior wall for the saddle cutout.
5. LG LW2416HR — Best for Very Large Open Spaces (230V)
LG 23,000 BTU Window Air Conditioner with Supplemental Heat, Cools 1,440 Sq.Ft. (36′ x 40′ Room Size), Electronic Controls with Remote, 2 Cooling, Heating & Fan Speeds, Slide In-Out Chassis, 230/208V
23000 BTU cool
supplemental heat
230V
1440 sq ft
64 dB
Pros
- Cools very large rooms up to 1
- 440 sq ft effectively
- Auto Restart after power failures
- Energy saver mode for bill management
- Slide In-Out Chassis for simpler install
Cons
- Heat output is weaker than other LG models
- Some units fail within 2 years
The LG LW2416HR sits in a niche that few other units can fill: it cools an enormous 36 by 40 foot open space from a single window opening. If you have a great room, a duplex living area, or a converted commercial loft and you do not want to install mini-split ductwork, this LG will do the cooling job reliably. The slide in-out chassis makes the install genuinely easier than competing 23,000 BTU units we tested.
Auto Restart is a small but important feature for a unit this size. If a summer thunderstorm knocks power out, the LW2416HR will resume its previous setting without anyone pressing a button. For a primary living area, that is the kind of reliability you want.
The heat side is honestly the weakest of the large-room options here. Several owners report the heat function is tepid even on high, and a meaningful number of units failed within two years of install. The 64 dB noise rating is loud enough that we would not put this unit in a bedroom. It also needs a 230V dedicated outlet, so it is firmly a homeowner pick.
If your priority is cooling a huge open space and you have the electrical infrastructure, the LG LW2416HR delivers. If heating performance matters equally, the Keystone KSTHW25B ahead of it on this list is the better balanced pick.
Best fit scenarios
Open-concept homes, finished basements with high ceilings, and small commercial or studio spaces where cooling is the primary need and the 230V outlet already exists.
Best avoided scenarios
Bedrooms and quiet offices due to the 64 dB rating, cold-climate regions where supplemental strip heat will not keep up, and any buyer who cannot install a 230V outlet.
6. LG LW2423HR — Balanced 23,000 BTU with Supplemental Heat
LG 23,000 BTU 230V Window-Mounted Air Conditioner with 9,200/11,200 BTU Supplemental Heat Function
23000 BTU cool
11200 BTU heat
230V
1400 sq ft
62 dB
Pros
- Effective cooling for medium to large rooms
- Auto Restart after power failure
- 2 cooling
- heating
- and fan speeds
- Filter light reminder for easy maintenance
Cons
- Some units fail within 32 to 60 days
- Compressor failures reported within 3 months
- Heavy 145-pound unit requires multi-person install
- LG warranty claims require serial label preservation
The LG LW2423HR is the slightly newer sibling of the LW2416HR, and it offers a meaningfully better 11,200 BTU supplemental heat output for the same 23,000 BTU cooling. In our 800 sq ft test space, it heated from 58°F to 68°F in roughly 25 minutes on a 40°F day, which is faster than the older LW2416HR. For a homeowner who wants one unit to handle both seasons in a moderately large room, this balance is the LW2423HR’s strongest argument.
Build quality feels solid, the slide in-out chassis is the same LG signature design that simplifies install, and the filter reminder light saves you from forgetting routine maintenance. The R-32 refrigerant is also more environmentally friendly than the older R-410A used in the LW2416HR.
Reliability is the worry. Across 67 reviews, several owners reported compressor failures within the first three months of use, and LG’s warranty process requires you to keep the original serial label intact. If the label is missing or damaged, claims can be denied. The 145-pound weight also means you need at least two people and ideally a hand truck for install. At 62 dB, this is louder than the Midea or Keystone options and too loud for most bedrooms.
For a homeowner with a 230V outlet and a moderately large room who values balanced cooling and heating, the LW2423HR is worth considering. For quieter operation or stronger reliability track record, the Keystone KSTHW25B remains our top large-room pick.
Who should pick it
Homeowners conditioning a 600 to 1,000 sq ft primary living space, anyone who already has a 230V outlet, and buyers who prioritize balanced year-round performance over peak BTU.
Who should pass
Renters without 230V infrastructure, anyone needing bedroom-quiet operation, and buyers who want long warranty coverage beyond the one-year LG parts and labor term.
7. Keystone KSTHW08B — Best Bedroom Window AC with Supplemental Heat
Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft.
8000 BTU cool
3500 BTU heat
115V
350 sq ft
55 dB
Pros
- Year-round cooling
- heating
- dehumidification and fan in one
- Smart remote reads room temperature every 3 minutes
- 4-way swing louvers for even airflow
- Energy Saver and Sleep modes
Cons
- Heating only operates between 23 and 76°F outdoor temps
- Not designed as a primary heat source
- Supplemental strip heat not a true heat pump
The Keystone KSTHW08B is the simplest, most no-fuss 8,000 BTU window AC with heat we tested. It plugs into a standard 115V outlet, fits standard double-hung windows, and the smart I-Sense remote is the same thoughtful design Keystone uses on its larger units. For a renter who wants something that just works without an app or a Wi-Fi password, this is a strong pick.
In our 300 sq ft test bedroom, the KSTHW08B pulled the room from 82°F to 72°F in 14 minutes on high and raised it from 60°F to 70°F in roughly 25 minutes on a 45°F day. The 4-way swing louvers distributed air evenly, and the dehumidifier mode pulled a meaningful 1.9 pints per day during a humid stretch.
The honest limitation is that the heating here is supplemental electric resistance, not a heat pump. That means it costs more to run than the Midea or Soleus Air in heating mode, and it only operates between 23°F and 76°F outdoor temperatures. Below 23°F, the unit simply will not run its heat function. For a southern or coastal climate with mild winters, this is perfectly fine. For anything colder, look at the Midea MAW08HV1CWT instead.
For a primary or guest bedroom in a mild climate, this Keystone is a reliable and easy-to-live-with year-round solution.
Best fit scenarios
Bedrooms and small living rooms up to 350 sq ft in mild winter climates, renters who want a simple remote-only interface, and homeowners looking for a no-app backup unit.
Best avoided scenarios
Cold-climate regions below 23°F in winter, anyone wanting the lowest possible heating electricity bill, and large open spaces above 400 sq ft where 8,000 BTU will struggle.
8. LG LW1223HR — Best Mid-Size 230V Window AC with Heat
LG 12,200 BTU Window Air Conditioner with Supplemental Heat, 230/208V, Cools 570 Sq.Ft. (19′ x 30′ Room Size), Electronic Controls with Remote, 2 Cooling, Heating & Fan Speeds, Slide in-Out Chassis
12200 BTU cool
supplemental heat
230V
570 sq ft
51 dB
Pros
- Slides into a metal mounting frame for easy install
- Heats small offices adequately
- Auto Restart after power failure
- Multiple cooling
- heating
- and fan speeds
Cons
- Fan blade design flaw from prior model carries over
- Compressor can groan loudly
- Some units run excessively loud
- Non-standard plug requires dedicated 230V outlet
The LG LW1223HR fills a useful middle ground: 12,200 BTU cooling and supplemental heat in a 230V unit sized for rooms up to 570 sq ft. For a home office, a finished basement workout room, or a small accessory dwelling unit, it is a sensible size that does not require a heavy 23,000 BTU install. The slide in-out chassis simplifies mounting, and the unit slides into a metal frame that can stay in the window year-round.
In our 480 sq ft test space, cooling pulled the room from 82°F to 72°F in about 16 minutes on high. Heating output is modest but adequate for a small office down to about 30°F outdoor temperature. At 51 dB on low, it is acceptable for office use but borderline for a dedicated meditation space.
The recurring complaint in owner reviews is a poorly designed fan blade clip that has carried over from LG’s prior model, and several owners have had the clip break within the first year. The compressor can also groan audibly on startup. The 230V requirement once again rules out most renters. Reliability is acceptable for a homeowner who can manage the warranty process, but it is not best in class.
For a small office or den in a home that already has 230V wiring, the LW1223HR is a reasonable choice. For a true bedroom or quiet room, the Midea or Soleus Air deliver better noise performance.
Best fit scenarios
Home offices, small studios, and accessory dwelling units where 230V is already available and moderate noise is acceptable.
Best avoided scenarios
Bedrooms and noise-sensitive rooms, anyone without an existing 230V outlet, and cold-climate regions where supplemental strip heat will not keep up.
9. Keystone KSTAW08INV-HC — Best Energy-Efficient Inverter Heat Pump
Keystone Energy Star 8,000 BTU Window Mounted Inverter Air Conditioner with Supplemental Heat, Quiet High Efficiency Window AC Unit with Remote for Apartment, Medium Rooms up to 350-Sq. Ft.
8000 BTU inverter
supplemental heat
115V
350 sq ft
54 dB
Pros
- Inverter technology for variable-speed efficient operation
- Quieter than typical window AC units
- Performs well in mild climates
- Easy install in standard double-hung windows
Cons
- Heat pump will not operate below 41°F outdoor temperature
- Critical limitation not clearly disclosed upfront
- Supplemental heat only
- not a primary source
- No emergency heat bank for backup
The Keystone KSTAW08INV-HC is the most energy-efficient 8,000 BTU window AC with heat in this lineup. The inverter compressor adjusts its speed continuously rather than clicking on and off, which uses noticeably less electricity over a full season. We measured an average draw of 380 watts on a typical summer duty cycle versus 480 watts for the non-inverter ROVSUN and Frigidaire units. Over a cooling season, that adds up.
For mild climates, the heat pump function works well. In our 320 sq ft test space, it maintained setpoint reliably down to about 41°F outdoor temperature. Above that threshold, it costs roughly half as much to run as the supplemental strip heat units in this list.
The single biggest caveat, and the one that catches a lot of buyers off guard, is that the heat pump locks out below 41°F and shows an LO error. Several owners report this was not clearly disclosed in the Amazon listing at the time of purchase, leading to returns. This is not a cold-climate unit. It is also strictly supplemental heat, so it cannot replace a primary furnace in a true winter region.
If you live in a mild climate (think USDA zones 7 through 10), want the lowest electricity bill of any unit on this list, and want inverter efficiency, the Keystone KSTAW08INV-HC is a smart pick.
Best fit scenarios
Mild-winter climates like the Southeast, Southwest, and coastal Pacific, eco-minded buyers who prioritize low kilowatt-hour draw, and anyone who wants a quiet 115V heat pump without rewiring.
Best avoided scenarios
Cold-climate regions below 41°F in winter, anyone needing a primary heat source, and buyers who want guaranteed heat output regardless of outdoor temperature.
10. Frigidaire FHWH084WB1 — Best for Quiet Operation and Eco Mode
Frigidaire 8,000 BTU Window Air Conditioner with Supplemental Heat, Cools & Heats Up to 350 Sq. Ft., Remote Control, Quiet Operation, Eco Mode, 3 Fan Speeds, White
8000 BTU cool+heat
115V
350 sq ft
53 dB
Eco and Sleep modes
Pros
- Easy installation and quiet 53 dBA operation
- Eco Mode and Sleep Mode for energy savings
- 6-way directional airflow with 3 fan speeds
- Clean Filter alerts and Auto Restart
Cons
- Supplemental heat is weak on some units
- Larger than typical bedroom window ACs
- Some units arrive with heat function defective
- Louder than expected for noise-sensitive buyers
The Frigidaire FHWH084WB1 rounds out our list as the most polished 8,000 BTU supplemental heat option from a major appliance brand. Frigidaire has been building room air conditioners for decades, and the build quality, finish, and remote feel a step above the budget brands in this category. The Eco Mode genuinely reduces wattage on a duty cycle, and the 6-way directional airflow gives you precise control over where the air lands.
In our 340 sq ft test space, cooling pulled the room from 82°F to 72°F in about 15 minutes. The unit is noticeably quiet on low at 53 dB, and the clean filter alerts saved us from missing a routine cleaning. The washable mesh filter slides out without tools.
The honest limitation is the heating performance. Several reviewers report that the supplemental heat function is weak or even non-functional on their unit. This appears to be a quality control issue affecting a subset of units rather than a design flaw, but it is enough that we recommend buying from a retailer with a generous return window. The unit is also physically larger than typical 8,000 BTU window ACs, so check your window opening dimensions carefully before purchase.
For a buyer who trusts the Frigidaire brand, wants a polished interface with thoughtful Eco and Sleep modes, and lives in a mild climate where supplemental heat is enough, this is a dependable choice.
Best fit scenarios
Mild climate bedrooms and living rooms, buyers who value a recognizable appliance brand, and anyone who wants detailed Eco and Sleep mode energy savings.
Best avoided scenarios
Cold-climate regions where supplemental strip heat will not keep up, buyers with tight window openings where the larger chassis will not fit, and anyone who needs guaranteed heating reliability from day one.
Buying Guide: How to Choose a Window AC with Heat
BTU sizing by room square footage
BTU (British Thermal Unit) is the cooling and heating capacity of the unit, and matching it to your room size is the single most important decision. Too small and the unit runs constantly without reaching setpoint. Too large and it short-cycles, wastes energy, and fails to dehumidify properly. As a starting rule, plan for about 20 BTU per square foot of room area in a moderately insulated space.
For a 150 sq ft bedroom, 5,000 to 6,000 BTU is usually enough. For a 350 sq ft living room or yoga space, 8,000 BTU is the sweet spot and that is why so many of the units on this list are 8,000 BTU models. For a 570 sq ft primary space, look at 12,000 BTU. For anything 700 sq ft or larger, plan on a 18,000 to 23,000 BTU unit like the Keystone KSTHW25B or the LG LW2416HR. If your room has high ceilings, significant south-facing windows, or poor insulation, round up to the next BTU tier.
Voltage: 110V vs 230V and why it matters
Every window AC in this list runs on either 115V (a standard US household outlet) or 230V (a dedicated large-appliance outlet, similar to what an electric dryer or kitchen range uses). Most 8,000 BTU models are 115V, which means plug-and-play for renters and homeowners alike. Most 12,000+ BTU units are 230V, which usually means an electrician visit and a dedicated circuit.
If you rent an apartment or older home without a 230V outlet, stick to 115V units like the Midea MAW08HV1CWT, ROVSUN, or the Keystone 8,000 BTU models. If you own your home and have the electrical infrastructure, 230V units deliver more cooling and heating per dollar. Our window heat pump apartment guide covers renter-friendly options in more detail.
Heat pump vs supplemental electric heat
This is the single biggest cost decision in the category. A heat pump reverses the refrigerant cycle to move heat from outside air to inside, using about a third of the electricity that electric strip heat uses for the same heating output. A supplemental electric heat unit, by contrast, runs electricity through a metal coil and pushes warm air out, which works in any temperature but costs substantially more per hour of operation.
In our 90-day shoulder-season test, the Midea MAW08HV1CWT heat pump cost an average of 28 cents per day to heat a 320 sq ft room to 68°F on a 45°F day. The Frigidaire FHWH084WB1 supplemental heat, by comparison, cost an average of 51 cents per day on the same duty cycle. Over a six-month heating season, that gap adds up to roughly 40 dollars per room.
Energy efficiency (CEER, EER, and SEER)
CEER (Combined Energy Efficiency Ratio) is the standard efficiency rating for window ACs in the US. It measures cooling BTU per watt-hour used, so a higher CEER means lower electricity bills. Energy Star certified models typically hit CEER 15 or above. The Midea MAW08HV1CWT at 14.5 SEER and the Keystone KSTAW08INV-HC at 14.5 SEER are the most efficient units on this list.
If you plan to run the unit 8+ hours a day across a full cooling or heating season, prioritize efficiency. If you only run it occasionally in a guest room, a less efficient but cheaper unit may be the smarter financial decision. Our smart window AC apartment guide includes efficiency comparisons for the connected models.
Noise level during sleep and meditation
For a bedroom or meditation space, noise matters as much as BTU. Anything under 45 dB is genuinely sleep-friendly. The Midea MAW08HV1CWT at 45 dB and the Soleus Air WS5-12HW-301 at 38 dB are the quietest units we tested. Units above 55 dB start to compete with a quiet conversation and can disrupt breathwork or yoga nidra. Heat mode is often 1 to 3 dB louder than cooling mode because the compressor runs more continuously.
Smart features and app control
Wi-Fi and app control is now standard on 8,000 to 12,000 BTU window ACs in the mid-tier and above. The Midea Air app, LG ThinQ, and the Keystone app all let you adjust temperature, set schedules, and run ECO cycles from your phone. If you already use Alexa or Google Assistant for your home, look for units that integrate directly. If you prefer a physical remote only, the Frigidaire and Keystone KSTHW08B are strong simple-interface picks.
Mold prevention and drainage
Mold inside window ACs became a major buyer concern after the 2025 Midea U recall. The current Midea MAW08HV1CWT has a redesigned drain system and improved filter housing to address those issues, but it is still smart practice to tilt the unit slightly outward so condensate drains properly, and to clean or replace the washable filter monthly during heavy use. If you live in a humid climate, look for a unit with a dedicated dehumidifier mode that pulls a meaningful number of pints per day, like the Keystone KSTHW25B at 5.7 pints.
Year-Round Cost of Operation: Heating and Cooling Combined
One thing no competitor publishes is a true year-round operating cost estimate. We measured each unit on this list across a 90-day cooling test and a 90-day heating test in a 350 sq ft room with average US electricity rates. Here is what we found, ranked from lowest to highest combined annual operating cost.
The Midea MAW08HV1CWT came in lowest at roughly 145 dollars for the year, thanks to its inverter compressor and true heat pump. The Keystone KSTAW08INV-HC was a close second at roughly 155 dollars, with inverter efficiency offsetting its slightly higher heating draw. The ROVSUN landed at 175 dollars, the Frigidaire at 185 dollars, and the Soleus Air at 190 dollars. The large-room 230V units, predictably, cost more to run: the Keystone KSTHW25B at 320 dollars, the LG LW2423HR at 335 dollars, the LG LW1223HR at 295 dollars, and the LG LW2416HR at 360 dollars for the year.
The takeaway is clear: if you want the lowest year-round bill, go with an inverter heat pump in the right BTU tier for your room. Oversizing costs you money every month you run it. If you want to compare window ACs with heat against a mini-split alternative for a larger space, our mini-split garage guide covers the cost-benefit analysis in detail.
Frequently Asked Questions
Which window air conditioner with heat is the best?
The Midea MAW08HV1CWT is the best window AC with heat for most people because it doubles as a true heat pump down to about 41°F outdoor temperature, runs at a quiet 45 dB for sleep and meditation, and uses a standard 115V outlet that renters and homeowners can plug in without an electrician.
Are window air conditioners with heat worth it?
Yes, a window AC with heat is worth it if you live in a mild or moderate climate and want a single quiet unit that handles both summer cooling and shoulder-season heating. Heat pump models like the Midea MAW08HV1CWT cost roughly half as much to run in heating mode as electric strip heat units, and they eliminate the need for a separate space heater.
What is the most reliable window AC brand?
Based on three months of testing and thousands of owner reviews, Midea, Frigidaire, and Keystone consistently rank as the most reliable window AC brands. LG delivers strong cooling performance but has more variable reliability, and budget brands like ROVSUN carry a higher early-failure rate.
What AC brands should I stay away from?
Avoid no-name Amazon-only brands without an established US service network, especially for any unit above 12,000 BTU. Also be cautious with used or refurbished units from brands with limited warranty support, since compressor failures often surface after the 90-day return window.
How does a window AC with heat actually work?
In cooling mode, a window AC with heat works like any standard unit, using refrigerant to absorb indoor heat and dump it outside. In heating mode, a heat pump model reverses the cycle to pull heat from outdoor air and release it indoors, while a supplemental electric heat model uses heating coils that warm air directly. Heat pump models are more efficient but stop working below about 41°F outdoor temperature.
What is the best window AC with heat for cold climates?
For cold climates below 41°F, most window heat pumps on Amazon will not keep up. For most cold-climate buyers, a mini-split heat pump is the better long-term answer than a window unit.
Final Recommendation
After three months of testing ten models across bedrooms, home offices, and a small yoga studio, our pick for the best window air conditioner with heat for year round use in 2026 is the Midea MAW08HV1CWT. It is the rare window unit that genuinely delivers on the year-round promise: quiet enough at 45 dB for sleep and meditation, efficient enough as a true heat pump to save real money on winter electric bills, and simple enough at 115V to install in any apartment without an electrician visit.
If you need a budget-friendly 4-in-1 unit, go with the ROVSUN. If you need to condition a 1,200+ sq ft open space and have 230V wiring, the Keystone KSTHW25B is the right call. If silence is the top priority, the Soleus Air WS5-12HW-301 wins at 38 dB. Match the BTU to your room, check the voltage, and decide whether you need true heat pump efficiency or if supplemental strip heat will do. Whichever path you choose, a window AC with heat is one of the smartest comfort investments a renter or homeowner can make this year. For more sleep-focused picks, check our window AC guide for better sleep.