Air conditioning, finally comparable
Got only Fans but no AC?Compare only real air conditioners.
Marketplaces bury real AC under tower fans and air coolers. Every unit below is a genuine air conditioner, with all the numbers that matter: cooling, noise, energy class, and the room it covers.
Installing in United States
All rules- US: EPA Section 608 certified technician for refrigerantRefrigerant handlingOften blocks install
- US: local mechanical and electrical permits (vary by city)Permits & planningPermit required
- US: historic district Certificate of AppropriatenessHistoric / listedPermit required
- US: HOA / condo CC&Rs and architectural reviewCondo / buildingPermit required
Showing 385 of 385 units sized for your 450 sq ft room
Prices last synced Oct 27, 2026. In-stock units are marked and show a live retailer price confirmed within the last 7 days; the rest show the listed reference price, not a live offer. compare.ac may earn a commission when you buy through a retailer link, at no cost to you; it never changes the order. As an Amazon Associate I earn from qualifying purchases.
Best match for your 450 sq ft room
Best for renters and rooms where you cannot install a fixed unit.
compare.ac may earn a commission, at no cost to you. As an Amazon Associate I earn from qualifying purchases.
Frigidaire
10,000 BTU Wi-Fi Enabled Energy Star Inverter Window Air Conditioner
A window air conditioner rated at 10,000 BTU for rooms up to 450 sq ft. It self-installs in a window and connects to Wi-Fi for app control.
$419.99
at Sylvane
Lowest since Jul 25, 2026 $419.99~$90/yr to run(est.)
GE Profile
ClearView 12,200 BTU Inverter Smart Ultra Quiet Window Air Conditioner
12,200 BTU GE Profile ClearView inverter window AC rated CEER 14.7 and Energy Star certified, with the low-profile see-through front, sized for large rooms up to 550 sq ft.
$424
at Abt Electronics
Lowest since Jul 25, 2026 $424~$115/yr to run(est.)
Price drops
Air conditioners now at the lowest price in our available history from the last 120 days, down from a price we recorded earlier.
15% offFriedrich
Chill Premier Inverter CCV08A10ALowest we have tracked at Sylvane since Jul 25, 2026
~$75/yr to run (est.)
15% offLowest we have tracked at Sylvane since Jul 25, 2026
~$110/yr to run (est.)
13% offLowest we have tracked at Sylvane since Jul 25, 2026
Check you are allowed to install it
A split is a structural change that needs a certified installer and usually permission. We track 81 rules across 16 regions, so you find out before the box arrives.
Not sure where to start? Read a buying guide
Straight answers with a real recommendation, sized and priced from the same live data as the tool.
Torn between two? See them head-to-head
The units people actually cross-shop, side by side with an honest verdict on which fits your room.
How compare.ac works
Our method and how we make moneyOnly real air conditioners
Every unit here removes heat with a refrigerant cycle. No tower fans, no evaporative coolers dressed up as AC.
One honest spec scale
Cooling, noise, energy rating and the room it covers, normalized so two units are actually comparable.
We never invent a number
A spec the manufacturer does not publish stays blank. Prices come live from the retailer, not a guess.
Not sure which to pick?
Let the advisor narrow it down
Tell us your room and your situation. We will suggest the right system type and cooling power, then point you straight at the matching units. No jargon, no upsell.
Cooling advisor
Answer four things, see what actually fits.