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You want one room cold, not a whole-house system, and you do not want to spend a fortune doing it. That is exactly what a window air conditioner is for — and the trick is matching the unit’s cooling power to your actual room size. Buy too small and it runs all day without winning. Buy too big and you overspend. Below are nine units that get the job done, sorted so the strongest all-rounder sits first and the budget-friendly picks close it out.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Cooling capacity is measured in BTU (British Thermal Units — the higher the number, the bigger the space a unit can chill), and that single figure decides most of your purchase. Here is the honest shortlist of the cheap air conditioner options worth putting in your window this summer.
Our Picks at a Glance
How To Choose The Best Cheap Air Conditioner
The biggest mistake buyers make is grabbing the cheapest box on the shelf without checking whether it fits the window or the room. Get those two things right and almost any unit here will keep you comfortable all summer.
Match BTU to square footage first
BTU is the unit’s cooling muscle. A 5,000 BTU model is built for a room around 150 square feet — a bedroom, a small office, or a camper. An 8,000 BTU unit stretches to roughly 350 square feet, which covers a larger bedroom or a living room. Overshooting your square footage wastes money up front and can make a unit cycle on and off awkwardly. Undershooting means it never quite gets there on the hottest afternoons.
Check your window opening before anything else
A window unit hangs partly outside and partly inside, so the frame has to accept it. The Midea EasyCool asks for windows 23 to 36 inches wide and at least 13 inches high, for example. The Della calls for 23 to 36 inches wide with a minimum height of 14.5 inches. Measure your opening with a tape before you order — returning a heavy air conditioner is nobody’s idea of a good time.
Decide between dial controls and a remote
Mechanical controls are simple push buttons or dials you walk over and turn. They cost less and there is nothing to lose or break. Electronic controls add a remote, a digital thermostat, timers, and sleep modes — handy when the unit sits high in a window and you would rather not climb to adjust it.
Understand what efficiency ratings mean for your bill
CEER stands for Combined Energy Efficiency Rate — a single number that tells you how much cooling you get per unit of electricity. A higher CEER means a more efficient unit that runs cheaper over a full summer. The Midea EasyCool lists a CEER of 11.0, while the Della sits at 10.9. Those are close, but every point counts once the unit is running for hours a day.
Quick Comparison
| Model | Best For | Cooling Power | Room Coverage | Form Factor | Amazon |
|---|---|---|---|---|---|
| Midea 5,000 BTU EasyCool★ Best Overall | Small rooms on a budget | 5,000 BTU | 150 sq. ft. | Window | Amazon |
| Midea 5,000 BTU Remote ControlBest for Bedrooms | Hands-off bedroom cooling | 5,000 BTU | 150 sq. ft. | Window | Amazon |
| LG LW5023 5,000 BTUBest for Tight Frames | Small windows | 5,000 BTU | 150 sq. ft. | Window | Amazon |
| Frigidaire 5,000 BTU | Easy install and long cord | 5,000 BTU | 150 sq. ft. | Window | Amazon |
| Hisense 8,000 BTU Portable | Windows that cannot hold a unit | 8,000 BTU | 350 sq. ft. | Portable | Amazon |
| BLACK+DECKER BD08WT6 | Medium rooms with remote control | 8,000 BTU | 350 sq. ft. | Window | Amazon |
| DELLA 8,000 BTU | App control and fast cooling | 8,000 BTU | 350 sq. ft. | Window | Amazon |
| LG 8,000 BTU LW8024RD | Quiet-ish medium rooms | 8,000 BTU | 350 sq. ft. | Window | Amazon |
| Frigidaire 8,000 BTU Remote | Full-featured medium rooms | 8,000 BTU | 350 sq. ft. | Window | Amazon |
In‑Depth Reviews
1. Midea 5,000 BTU EasyCool Small Window Air Conditioner
Our pick — 4.0+★ from 12,000+ verified ratings; the strongest balance of quality and price.
The dial-control workhorse that chills a bedroom without asking you to read a manual.
Cools 150 square feet with a 5,000 BTU compressor (5,000 BTU being the cooling output — enough for a bedroom, a home office, or a camper). Seven temperature settings, two cooling speeds, two fan-only speeds, and 2-way air direction let you point the cold where you actually sit. Mechanical push-button controls mean you walk over and turn a dial instead of hunting for a remote that slid under the couch.
The efficiency number is the quiet win here. That CEER of 11.0 (a higher Combined Energy Efficiency Rate means more cooling per unit of electricity) edges past the Della’s 10.9 — a small gap on paper, but a real one when the unit runs for hours through July. A reusable washable filter pulls dust out of the air and rinses clean under a tap, so upkeep costs nothing extra.
What wins people over is straight-ahead cooling in a small space — owners keep coming back to how well it handles a compact room. The honest catch: cooling performance and noise draw split opinions, so set your expectations for a standard window-unit hum rather than silence. The lack of a remote is a genuine gap if the unit sits high in your frame. Average rating sits at 4.0+, backed by 12,000+ ratings — a crowd favorite on the whole list.
What earns it first place
- CEER of 11.0 — the highest efficiency figure on this list, so it sips electricity
- Seven temperature settings plus two cooling and two fan speeds for fine tuning
- Washable filter costs nothing to maintain
- Simple push-button controls with no app, account, or setup required
Where it asks you to compromise
- No remote control — you adjust it by hand every time
- Noise is a common talking point, so expect the usual window-unit drone
- Fits windows 23”–36” wide and at least 13” high, so measure first
Reach for this if: you are cooling one small room and want the lowest running cost with zero smart-home fuss.
Look elsewhere if: you want to change the temperature from bed without getting up — the remote-equipped Midea above the fold solves that.
2. Midea 5,000 BTU Window Air Conditioner with Remote and Electronic Control
Same cooling muscle as the top pick, now with a remote so you never leave the pillow.
This one answers the biggest gripe about the EasyCool above: it ships with a remote control (batteries included), so you set time, temperature, and mode from across the room. The 5,000 BTU compressor still handles up to 150 square feet, and you get three speeds of fan circulation plus a dehumidifier mode to pull dampness out of muggy air. The LED display makes the current setting readable at a glance.
It runs as low as 52dB in low mode (decibels being how loud the unit actually sounds — 52dB is roughly a quiet conversation). Eco mode trims power use when you are not demanding full blast, and the EasyTimer lets you program a schedule so it kicks in before you get home. Installation follows Midea’s usual pattern: all mounting accessories are included, and a screwdriver is the one tool you supply yourself.
Buyers consistently report the setup is straightforward and the remote is the feature that sells it — the unit works well in small rooms like a living-room window. Cooling and temperature control are more of a mixed bag: some rooms get chilly fast, others report it struggles to push past the upper 70s.
Where it pulls ahead: the remote plus dehumidifier and Eco mode turn a basic window box into a set-and-schedule unit, and installation requires nothing beyond the included kit.
The trade-off to weigh: if your room runs larger than 150 square feet on a brutal afternoon, this 5,000 BTU unit will work hard and may not keep up — step up to an 8,000 BTU model instead.
The smart pick for: a bedroom or small office where you want to adjust the cold without crossing the room.
Think twice if: you need to cool more than 150 square feet — this one is built for one modest space.
3. LG LW5023 5,000 BTU Window Air Conditioner
Built for the narrow double-hung window every other unit seems to overlook.
The spec that matters here is the fit. This LG slides into a double-hung window measuring 21 to 35 inches wide and 12 inches high — a tighter width range than the Midea’s 23-to-36-inch opening, which makes it the friendlier choice for older homes and small apartment windows. The included EZ Mount kit handles the install, and the fixed chassis keeps the whole thing stable once it is seated.
Cooling output is 5,000 BTU across 150 square feet, with two cooling modes and two fan speeds to dial in. Sound drops as low as 50dB in low mode — lower than the 52dB Midea and Frigidaire models. Energy Save Function trims running cost, and the R32 refrigerant is the lower-impact option. The slide-out filter rinses clean, with LG recommending a wash every 30 days to keep airflow strong.
Owners single out the fit most — it slots into small windows where bulkier units will not go. The recurring gripe is temperature control: the thermostat can read warmer or cooler than the room actually is, so treat the dial as a guide and adjust by feel. Noise draws the usual split verdict for a window unit. At 4.0+ across hundreds of ratings, this is a solid pick with one honest quirk.
Why the tight fit wins: a 21-to-35-inch width range opens doors for narrow frames that lock out most competitors.
One quirk to expect: the thermostat’s reading and the room’s real temperature can drift apart, so dial in comfort by ear and feel rather than trusting the number.
Go with this one: if your window is on the narrow side and you need a unit that actually seats properly.
Pass if: you want a precise digital thermostat you can trust without second-guessing it.
4. Frigidaire 5,000 BTU Window-Mounted Air Conditioner
The unit built around the parts of installation everyone else makes you improvise.
Two details make this Frigidaire the least painful install on the list. First, the 78-inch three-prong power cord — long enough that you will not need an extension cord, which window AC makers specifically warn against. Second, the adjustable side panels extend to hug your window frame, sealing the gap so cold air stays in and bugs stay out. Owners put installation at the top of what they praise, and it is easy to see why.
Cooling runs 5,000 BTU over 150 square feet with two fan speeds, and the unit idles at 52 dBA in quiet operation — the same low-mode figure as the Midea remote model, so it will not dominate a bedroom. Auto Restart is the sleeper feature: when the power flickers back on after an outage, the unit returns to your last settings instead of defaulting to off. The washable filter pulls dust and rinses clean to keep performance steady.
Where this one earns its keep is the sheer volume of happy installs — hundreds of owners flag setup as the highlight, and compact size ranks right behind it. Cooling performance is the honest variable: some rooms get properly cold, others report it barely moves the needle. That is the nature of a 5,000 BTU box in a hot room, not a fault. At 4.0+ across 17,500+ ratings, this is the most-reviewed unit on this list.
What owners keep praising
- 78-inch cord removes the extension-cord headache
- Adjustable side panels seal the window frame tightly
- Auto Restart keeps your settings through a power blip
- 52 dBA quiet operation suits a bedroom
What to keep in perspective
- Cooling is split — fine for 150 sq. ft., not for a big open room
- Durability gets rougher marks across the review pool
- Mechanical-style controls mean no remote in the box
An easy yes for: first-timers who want a window unit that goes in without a fight and stays tuned after a power cut.
Not the one for: a room bigger than 150 square feet on a heatwave afternoon — the BTU ceiling will show.
5. Hisense 8,000 BTU Dual Hose Portable Air Conditioner with Inverter
For the window that will not hold a hanging unit — roll this one in instead.
Not every window can take the weight of a boxed air conditioner. This Hisense sits on the floor and vents through a snap-together window kit, so it works where a window unit will not. It delivers 8,000 BTU (in the U.S. DOE/SACC measure, with the listing also citing 10,000 ASHRAE) across 350 square feet, and the dual-hose design feeds and exhausts air separately for faster, steadier cooling than a single-hose portable.
The inverter compressor is the efficiency story: the listing cites up to 40% more efficiency from running the compressor variably rather than full-blast on and off. It doubles as a dehumidifier and a fan, drains without a bucket in cooling mode, and runs as quietly as 42 dB — the lowest noise figure on this entire list. Controls cover the bases: a remote, a touch panel, and the ConnectLife app with Google and Alexa voice support.
What owners rave about is raw function — this unit cools fast and holds a room steady in the high 70s, and setup is described as genuinely simple. The one recurring note is hose durability, so treat the exhaust hoses gently when you move the unit around. This is a renewed listing, which is worth knowing before you buy. At 4.0+ across a smaller batch of ratings, it is the specialist pick for awkward windows.
The case for going portable: floor placement plus a window vent kit means no lifting, no chassis, and no weight hanging off your sill — and 42 dB makes it the quietest option here.
The honest caveat: portable hoses are the fragile part, so handle with care; and this is a renewed unit, so buy knowing that.
Made for you if: your window cannot take a mounted unit, or you want to move the cold from room to room.
Skip if: you want the simplicity of a permanent window seat and would rather not manage vent hoses.
6. BLACK+DECKER 8,000 BTU Window Air Conditioner BD08WT6
8,000 BTU versus the 5,000 BTU crowd, aimed at living rooms up to 350 square feet.
Here is where the list steps up in scale. This BLACK+DECKER pushes 8,000 BTU across up to 350 square feet — a living room, a large bedroom, or an apartment’s main space. Four fan levels (auto, low, medium, high) let you dial the airflow to match the day. The full-function remote controls every setting, and you get sleep mode, an energy saver, and a 24-hour timer for scheduling around your routine.
Installation uses accordion-style side panels that fit standard double-hung windows from 23 to 36 inches wide and as low as 15.5 inches high. The R32 refrigerant is chosen for zero impact on the ozone layer, and annual energy consumption is listed at 527.47 kWh per year. That is the number to weigh against your usage — it reflects a more powerful unit doing more work than the smaller 5,000 BTU models.
Looking at the review picture honestly: cooling performance, noise, and value all split down the middle. Some owners get a room that chills fast and quiet; others find it does not cool enough or runs louder than they hoped. That inconsistency is why this sits mid-list rather than at the top despite the bigger BTU rating. At 4.0+ across several hundred ratings, it is a reasonable step up for a medium room if 5,000 BTU has already proven too small.
What the extra BTU buys: coverage up to 350 square feet with four fan levels, a full remote, sleep mode, and a 24-hour timer.
What to go in knowing: reviews are split evenly on cooling and noise, so this is a safe bet for the right-sized room, less so as a fix for a hot one.
Worth it when: you are cooling a medium room and want a remote plus programmable timer at an 8,000 BTU level.
Look elsewhere when: near-silent operation matters most — the mixed noise reports make it a gamble for a light sleeper.
7. DELLA 8,000 BTU Energy Saving Window Air Conditioner
The 8,000 BTU box that lets you set the temperature from your phone.
Most window units stop at a remote. This DELLA goes further with the Della+ app, so you can adjust the unit from anywhere — a real convenience if you want the room already cool when you walk in. Under the hood it is an 8,000 BTU, 115V/60Hz unit covering up to 350 square feet, with a CEER of 10.9 to keep the running cost in check. It is UL Listed, which speaks to the build standard.
The control range is wide: temperature setting from 61°F to 88°F, three fan speeds, and four modes (Auto, Cool, Fan, Dry). A 24-hour timer, sleep mode, and an eco energy-saving mode round out the scheduling. The LED panel is straightforward, and the remote handles what the panel does. Sound runs as low as 54 dB, so expect a noticeable hum at full fan — it is a window unit, not a whisper machine.
Owners praise its cooling force first — it moves a lot of cold air, and the high fan setting pushes with real strength. Performance and installation draw steady positive notes too. The quieter grumbles are around noise and long-term durability, so mount it well and keep the pre-filter clean. Weight is listed at 44.8 lbs, which is worth knowing before you lift it into a window solo.
What stands out most
- App control plus remote — adjust from anywhere, not just across the room
- 61°F–88°F range with three fan speeds and four modes
- CEER of 10.9 and UL Listed construction
- Powerful fan that pushes serious airflow
What to plan around
- 54 dB at low is louder than the quietest picks here
- 44.8 lbs needs a second pair of hands for install
- Durability gets weaker marks than the top units
Right up your street if: you want to pre-cool a room from your phone before you get home.
Keep looking if: you are sensitive to fan noise and want the quietest possible bedroom unit.
8. LG 8,000 BTU Window Air Conditioner LW8024RD
The medium-room unit that pairs real cooling power with a name owners trust.
This is an 8,000 BTU unit engineered for a room the listing describes as 14 by 25 feet — up to 350 square feet, which makes it a fit for a large bedroom or a main living space. It runs as low as 53dB in low mode (a hair louder than its smaller LW5023 sibling at 50dB, but fine for a bedroom). Three cooling and fan speeds plus Auto Cool give you fine control over the blast level.
Electronic controls and a remote take the climbing out of adjustment, and Auto Restart is the quietly great feature: after a power outage, the unit powers back on and restores your settings on its own. A filter light reminder nudges you when the washable filter needs a rinse, so airflow does not quietly degrade over the season. Efficiency is listed as moderate — this is a comfort unit, not an efficiency champion.
What owners value most is the sense of quality — it feels like a well-built unit — and cooling performance backs it up, with rooms dropping from the low 80s into the low 70s. Function, value, and energy efficiency all get positive reads. Noise is the one split note: some find it genuinely quiet, others find it loud on full blast. At 4.0+ across several hundred ratings, it is a dependable middle-of-the-road performer.
What makes it dependable: strong quality marks and real cooling range — buyers report rooms falling from the low 80s into the low 70s, with a filter reminder and Auto Restart keeping it low-maintenance.
The catch: noise draws mixed reports, so if you want near-silent operation at full fan, temper expectations.
For you if: you are cooling a 350-square-foot room and want a wide-name unit with dependable quality and remote control.
Look elsewhere if: you need maximum efficiency — this unit’s rating is described as moderate.
9. Frigidaire 8,000 BTU Window Air Conditioner with Remote Control
Six-way airflow and every belt-and-braces feature, for the buyer who wants it all.
The distinguishing trick here is the 6-way directional airflow — you can aim the cold precisely where you need it, which matters in a 350-square-foot room where some corners run hotter than others. Cooling output is 8,000 BTU, with three fan speeds and a custom temperature setting. The remote handles adjustment from across the room, and Clean Filter alerts remind you when the washable dust filter wants a rinse.
It is loaded with the comfort extras. Eco Mode trims energy use while holding temperature, Sleep Mode gradually raises the temperature overnight so you do not wake up shivering, and a 24-hour on/off timer schedules around your day. Dry Mode pulls excess moisture from the air for a more comfortable feel on sticky nights. It runs at 54 dBA, and annual energy consumption is listed at 550 kWh per year with an efficiency figure of 10.9.
Owners mention it holds a room steady around 70°F into the mid-70s and praise the easy setup and the remote. Value and dehumidifying both draw positive notes. Noise is the one field where opinions part — some call it super quiet, others compare it to a regular fan running. At 4.0+ across a few hundred ratings, it rewards the buyer who values features over silence.
Why it earns its spot
- 6-way directional airflow points the cold exactly where you want it
- Eco, Sleep, and Dry modes plus a 24-hour timer and Clean Filter alert
- Holds a room steadily around 70°F into the mid-70s
- Remote control with easy setup
The fine print
- 54 dBA — louder than the quietest units on this list
- Noise opinions split between “quiet” and “fan-like”
- Efficiency of 10.9 matches the Della, not the efficiency leader
Pick it up if: you want the most feature-dense 8,000 BTU window unit and care more about airflow control than absolute silence.
Leave it be if: quiet operation is your top priority — the mixed noise reports make it a risk for a light sleeper.
Understanding the Specs
BTU and room coverage
BTU stands for British Thermal Units — the measure of how much heat a unit can remove per hour. Higher BTU equals more cooling muscle. A 5,000 BTU unit is sized for around 150 square feet (a bedroom or small office); an 8,000 BTU unit stretches to about 350 square feet. Bigger is not automatically better — an oversized unit can cool a room quickly, then cycle off before it has pulled out the humidity, leaving the air clammy. Match the BTU to your square footage and you will get steadier, drier comfort.
CEER efficiency
CEER is the Combined Energy Efficiency Rate — one number that folds in how efficiently the unit cools across a whole season. A higher figure means you get more cold air per unit of electricity. The Midea EasyCool sits at 11.0, the Della and this Frigidaire at 10.9. On a single unit the gap looks small, but over months of summer running it adds up. If you plan to run the unit daily, efficiency matters as much as the up-front cost.
Noise in decibels (dB)
A decibel is the standard measure of sound loudness — and lower is better here. The quietest low-mode figures on this list are 42 dB on the Hisense portable, 50 dB on the LG LW5023, and 52 dB on the Midea remote model and the Frigidaire 5,000 BTU. For comparison, a normal conversation is around 60 dB. A unit rated in the low 50s is a gentle background hum; anything creeping toward the mid-50s becomes noticeable in a quiet bedroom.
Window fit and installation
Window units need a frame that accepts both the width and the height of the unit. The Midea EasyCool wants 23 to 36 inches wide and at least 13 inches high. The LG LW5023 wants 21 to 35 inches wide and 12 inches high. The BLACK+DECKER wants 23 to 36 inches wide and as low as 15.5 inches high. Measure your opening before ordering — and note that window AC makers discourage extension cords, so a long power cord (like the Frigidaire’s 78-inch cord) is worth having.
FAQ
How many BTU do I need for my room?
Will a 5,000 BTU air conditioner cool a bedroom at night?
What is the difference between a window unit and a portable air conditioner?
Do I need a specific window type for a window air conditioner?
How often should I clean the air filter?
Can I use an extension cord with a window air conditioner?
What does Auto Restart do on an air conditioner?
Is a higher CEER worth paying for?
Can an 8,000 BTU unit cool a whole apartment?
Final Thoughts: The Verdict
For most people cooling one modest room, the cheap air conditioner winner is the Midea 5,000 BTU EasyCool, because it pairs a 5,000 BTU output with a CEER of 11.0 — the best efficiency figure here — and an owner base of 12,000+ ratings. If you want remote control so you can adjust from bed, grab the Midea 5,000 BTU remote model. And if your window cannot take a mounted unit, the Hisense 8,000 BTU portable is the one to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of November 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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