LG LW8017ERSM
Strong 8,000 BTU coverage, Wi-Fi control, and efficient performance for medium rooms.
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See on Amazon →US window AC guide• Updated April 23, 2026
Best Window Air Conditioner 2025: 4 Window AC Units Worth Buying
If you have a usable window, a window AC is usually the smarter buy than a portable unit. You get better efficiency, more cooling for the money, and less floor space lost to a big rolling cabinet and exhaust hose. That matters in apartments where every square foot counts and summer electric bills add up fast.
The catch is that window units reward careful sizing. You need the right BTU for the room, a cabinet that fits your window opening, and a noise level you can live with if the unit is going in a bedroom. The models below are the best window air conditioner 2025 picks for most shoppers because they cover the main buying priorities cleanly: easy installation, lower running cost than portable ACs, smart controls when they are actually useful, and genuinely quieter operation if sleep is your biggest concern.
Quick picks
Top window AC picks at a glance
These four units cover the most common window AC buying scenarios: a smart all-rounder, a value-focused connected pick, the quietest option here, and a smaller-room model that still feels premium.
Frigidaire FHWW083WBE
Good 8,000 BTU coverage with app control and an easy-to-live-with price-to-features balance.
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See on Amazon →GE Profile PHC08LY
The standout pick when bedroom-friendly noise is the main filter.
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See on Amazon →Friedrich Chill Premier CP06G10B
Compact 6,000 BTU size with better-than-average efficiency and low-room noise appeal.
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See on Amazon →Buying guide
Window air conditioner buying guide
A good window air conditioner buying guide starts with fit, not brand. Measure the opening first, then narrow by room size, efficiency, noise, and how much setup friction you are willing to accept.
BTU sizing guide
| Room size | Recommended BTU |
|---|---|
| 100-150 sq ft | 5,000 BTU |
| 150-250 sq ft | 6,000-8,000 BTU |
| 250-350 sq ft | 10,000 BTU |
Measure your window before you shop
Check the opening width, the minimum opening height, and whether you have a standard double-hung window. This is the easiest way to avoid buying a strong unit that simply will not fit. If your sill is shallow or your building has strict install rules, confirm whether the bracket or support hardware included will be enough.
Use BTU sizing as your first filter
For a 200 square foot bedroom or office, 6,000 to 8,000 BTU is the normal sweet spot. Jumping to a bigger unit does not automatically feel better. Oversized window ACs can cool too quickly without running long enough to remove humidity well, which leaves the room cold but clammy.
Look at EER or CEER, not just BTU
Window units are usually more efficient than portable ACs, but the better models still separate themselves on CEER or EER. Higher numbers generally mean lower running cost. Use efficiency as a tiebreaker once the unit fits your room and window, especially if it will run daily through a long summer.
Noise is the bedroom deal-breaker
Once a window AC drops into the low-40 dB range, it starts to feel much easier to sleep beside. Mid-50 dB models are still usable, but you will hear them. If this is going into a nursery, bedroom, or desk setup, prioritize dB claims and sleeper-focused modes over raw feature lists.
Smart features only matter if the basics are right
Wi-Fi, app control, and voice integration are nice when you want to pre-cool a room before getting home, but they should come after fit, BTU, and noise. A window AC with dependable cooling and a real remote is better than a flashy app wrapped around a loud or awkward install.
Installation ease matters more than the box makes it sound
Most standard window AC installs still work best with side panels, foam sealing, and at least some bracket or screw support. If you rent, check whether your building allows light drilling or requires non-permanent supports. The easiest unit to own is the one you can secure properly the first time.
Product reviews
Best window AC unit reviews
These four picks are the short list for shoppers who want a better alternative to portable ACs and have a standard window to work with.
Best overall
LG LW8017ERSM
Why we like it: Balanced cooling, good efficiency, and useful app control make it the safest mainstream pick.
Who it's for: Shoppers cooling a medium bedroom, office, or living space who want a capable smart window AC without overspending.
Key feature: 8,000 BTU smart window AC with LG ThinQ control
Specs
| Cooling | 8,000 BTU |
|---|---|
| Room size | 340 sq ft |
| Noise | As low as 52 dB |
| Efficiency | CEER 12.0 / EER 12.1 |
| Smart features | Wi-Fi app control, scheduling, voice-assistant support |
| Window fit | Fits windows about 22" to 36" wide |
| Size | 19.6" W x 19.4" D x 12.4" H |
The LG LW8017ERSM is the easiest model here to recommend first because it hits the core window AC buying priorities without leaning too hard on one gimmick. You get enough cooling for a typical medium room, solid efficiency, and smart controls that are actually useful if you like starting the unit before you get home.
It also makes sense for shoppers cross-shopping portable ACs. Compared with a similarly sized portable unit, LG gives you more efficient cooling and does not take over your floor space. That alone is enough to make it the better default apartment choice when a window install is allowed.
It is not the quietest window AC in this guide, so light sleepers may still prefer the GE Profile below. But if you want the best mix of price, smart features, and proven 8,000 BTU performance, LG is the all-rounder to beat.
Pros
- Good mix of efficiency, cooling strength, and smart controls
- Covers medium rooms well without moving up to a bulkier 10,000 BTU class
- Better value than many premium ultra-quiet models
Cons
- Not as bedroom-quiet as the GE Profile pick
- Still needs a careful window measurement before buying
Best for: Shoppers cooling a medium bedroom, office, or living space who want a capable smart window AC without overspending.
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Best value
Frigidaire FHWW083WBE
Why we like it: It keeps the buying decision simple: real 8,000 BTU coverage, useful app control, and a straightforward install profile.
Who it's for: Value-focused buyers who want a dependable medium-room unit with app control and energy-saving modes.
Key feature: 8,000 BTU connected window AC with Energy Saver mode
Specs
| Cooling | 8,000 BTU |
|---|---|
| Room size | 350 sq ft |
| Noise | Roughly low-50 dB class |
| Efficiency | CEER 12.0 |
| Smart features | Wi-Fi app control, schedules, Alexa and Google Assistant support |
| Window fit | Fits windows about 24" to 36" wide |
| Size | 18.5" W x 15.5" D x 13.2" H |
The Frigidaire FHWW083WBE is the pick for shoppers who care less about brand prestige and more about getting the core spec sheet right. It cools up to a medium-size room, includes connected controls, and keeps the cabinet dimensions reasonable enough for a lot of apartment and condo windows.
What stands out most is that it does not ask you to pay ultra-quiet pricing to get the basics right. If you mainly want reliable room cooling, an app for remote control, and solid efficiency, Frigidaire covers those boxes without getting fancy.
It is not the specialist choice for silence, and it will not feel as premium as the GE Profile. But for a lot of shoppers, it is the best value route into a smart 8,000 BTU window unit.
Pros
- Strong value for an 8,000 BTU smart window AC
- Compact-enough chassis for many standard windows
- Energy Saver mode helps if you run it daily
Cons
- Noise is fine rather than standout quiet
- Less distinctive than the top overall and quiet picks
Best for: Value-focused buyers who want a dependable medium-room unit with app control and energy-saving modes.
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Quietest window AC
GE Profile PHC08LY
Why we like it: It is the bedroom-first choice thanks to genuinely low noise and a polished install package.
Who it's for: Bedrooms, nurseries, and work-from-home rooms where low noise matters more than finding the cheapest unit.
Key feature: Ultra-quiet smart design with sound levels as low as 43 dB
Specs
| Cooling | 8,200 BTU |
|---|---|
| Room size | 350 sq ft |
| Noise | As low as 43 dB |
| Efficiency | CEER 11.4 |
| Smart features | Wi-Fi, SmartHQ app, voice control, auto-dimming display |
| Window fit | Fits windows about 26 1/16" to 39 1/4" wide |
| Size | 21.25" W x 18.1" D x 12.4" H |
If you are looking for the quietest window AC in this group, start with the GE Profile PHC08LY. It is built around the one thing many window units still get wrong: sounding too harsh for nighttime use. The low-end sound rating is materially better than the mainstream pack, and that makes a difference if the unit will run a few feet from your bed.
The smart features are also better integrated than average. App control is useful, the display dims automatically, and the installation system feels more polished than a lot of older boxier units. Those details matter when you are living with the machine every day, not just comparing bullet points online.
The tradeoff is price. You are paying for quieter operation and a more premium feel, not for dramatically higher BTU. If noise is your main filter, that premium is justified. If it is not, the LG usually gives better overall value.
Pros
- Best pick here for bedroom-friendly noise
- Smart controls and auto-dimming features feel well executed
- Good medium-room coverage without jumping to a larger class
Cons
- Costs more than louder 8,000 BTU competitors
- Slightly lower efficiency figure than the LG and Frigidaire picks
Best for: Bedrooms, nurseries, and work-from-home rooms where low noise matters more than finding the cheapest unit.
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Best for small rooms
Friedrich Chill Premier CP06G10B
Why we like it: Good efficiency and a quieter reputation make it a smart fit for smaller bedrooms and offices.
Who it's for: Small bedrooms, home offices, or guest rooms where 8,000 BTU would be more than you need.
Key feature: 6,000 BTU premium small-room window AC with Energy Star qualification
Specs
| Cooling | 6,000 BTU |
|---|---|
| Room size | 250 sq ft |
| Noise | Low-50 dB class |
| Efficiency | CEER 12.1 / EER 12.2 |
| Smart features | Remote control and programmable timer |
| Window fit | Fits windows about 20 1/8" to 36" wide |
| Size | 18.6" W x 20.7" D x 13.9" H |
The Friedrich Chill Premier CP06G10B is the pick for shoppers who do not need an 8,000 BTU unit but still want something better than a bargain-basement 5,000 BTU box. In a smaller bedroom or office, that can be the smarter move because you avoid oversizing while still getting a more premium build and solid efficiency.
This is also the model to consider if your priorities are small-room comfort and a more refined operating feel than entry-level units usually deliver. Friedrich has a long reputation in window ACs, and this model leans into that with strong efficiency, a slide-out chassis, and better control over airflow.
You give up app control, and it is not the cheapest small-room unit on the market. But if you want a compact window AC that feels like a deliberate purchase rather than a heat-wave emergency buy, Friedrich is the best small-room upgrade here.
Pros
- Excellent fit for smaller rooms that do not need 8,000 BTU
- Strong efficiency for a compact unit
- Feels more premium than many small-room alternatives
Cons
- No Wi-Fi or app control
- Not the right choice for medium rooms above its sizing range
Best for: Small bedrooms, home offices, or guest rooms where 8,000 BTU would be more than you need.
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FAQ
Window AC FAQs
How do I measure my window for an AC?
Measure the inside width of the opening, the minimum opening height when the lower sash is raised, and the depth or support available on the sill. Then compare those numbers with the unit's listed minimum and maximum window dimensions. If the unit needs side curtains, a bracket, or screw support, factor that in before you buy.
Are window ACs more efficient than portable?
Usually yes. Window ACs generally deliver more cooling per watt than portable units because the hot side of the system sits outside the room rather than inside it. That means better efficiency, lower noise indoors, and more usable floor space if your window setup allows installation.
What BTU do I need for a 200 sq ft room?
For a 200 square foot room, 6,000 to 8,000 BTU is the normal target. A shaded bedroom can often stay comfortable at the lower end, while a sunny room or one with extra heat from electronics usually benefits from the upper end of that range.
Can I install a window AC without drilling?
Sometimes, but it depends on the unit, the support bracket, and your building rules. Some renters use no-drill support brackets or tension-based hardware, but many installs still work best with at least minimal screw anchoring for safety. Check the manufacturer instructions and your lease before treating no-drill installation as guaranteed.
What's the quietest window AC available?
Among the models in this guide, the GE Profile PHC08LY is the quietest window AC pick because it is rated as low as 43 dB. If low nighttime noise is your top priority, that is the first model to shortlist.