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Answer a few questions about your room and we'll size it, estimate the running cost, and match you to the best-value units — no fluff, no sponsored rankings.

58
units compared
50
states covered
100%
independent
BTU Calculator

Size your AC in 60 seconds

320 ft²20 × 16 ft room
You need about
8,0009,000 BTU
⚡ HVAC Pulse
For many New Yorkers, home is no escape from the heat Ehn The Hidden Cost of Owning Ductless Minisplits Green Building Advisor Commissioners award library HVAC contract Nc News Online HVAC Prep for the heart of hurricane season News4jax Historic Simsbury Building Gets Large State Grant For Renovations Patch As Winter Approaches, Midea Helps Canadian Homeowners Rethink Heating System Replacements Menafn The Cost of Keeping Cool: Georgia Power Customers Struggle With Summer Bills Inside Climate News When the Numbers Look Good , HVAC Buyers Start Testing the Story achrnews.com Hickman County High School recruits students to help repair in - school HVAC units wsmv.com What Is A Dual Hose Portable Air Conditioner And Is It Better Than Single Hose ? slashgear.com How Much Does A Daikin Mini Split System Cost & What Kind Of Warranty Does It Have? Slashgear Second - Hand Air Conditioners Qatar : Summer Buying Guide qatarliving.com The Telltale Signs The Air Conditioner You Have Is Too Small For Your Home slashgear.com HVAC supplier expanding local operations with Mid City building purchase Baton Rouge Post Home Depot Labor Day Pro Special Buy of the Week: Up to 35% off + free shipping Dealnews PW Consulting: Centrifugal Chiller Market to Reach $483.9M by 2032 at 6.21% CAGR Pr Sync For many New Yorkers, home is no escape from the heat Ehn The Hidden Cost of Owning Ductless Minisplits Green Building Advisor Commissioners award library HVAC contract Nc News Online HVAC Prep for the heart of hurricane season News4jax Historic Simsbury Building Gets Large State Grant For Renovations Patch As Winter Approaches, Midea Helps Canadian Homeowners Rethink Heating System Replacements Menafn The Cost of Keeping Cool: Georgia Power Customers Struggle With Summer Bills Inside Climate News When the Numbers Look Good , HVAC Buyers Start Testing the Story achrnews.com Hickman County High School recruits students to help repair in - school HVAC units wsmv.com What Is A Dual Hose Portable Air Conditioner And Is It Better Than Single Hose ? slashgear.com How Much Does A Daikin Mini Split System Cost & What Kind Of Warranty Does It Have? Slashgear Second - Hand Air Conditioners Qatar : Summer Buying Guide qatarliving.com The Telltale Signs The Air Conditioner You Have Is Too Small For Your Home slashgear.com HVAC supplier expanding local operations with Mid City building purchase Baton Rouge Post Home Depot Labor Day Pro Special Buy of the Week: Up to 35% off + free shipping Dealnews PW Consulting: Centrifugal Chiller Market to Reach $483.9M by 2032 at 6.21% CAGR Pr Sync
33→16BTU per ft² — small rooms need double the cooling density of big ones
40%of window ACs people buy are the wrong size for the room
$300+typical yearly saving from a right-sized, efficient unit
60 secaverage time to a recommendation with our calculator
Editor-tracked

Popular units right now

Spec-matched value picks across window, portable and mini-split — chosen on the data, not paid placement.

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mrcoolac
Best efficiency
Mini-splitENERGY STAR

MRCOOL DIY 4th Gen 12K

4.6(1,510)
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
22 SEER2
Noise
32 dB
$1099 est.
typical retail price

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For installs & repairs

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4.8★+
avg. Google rating of listed pros
~50 yrs
avg. time in business
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FAQ

Common questions

Is CoolVerdict free to use?

Yes — the BTU calculator, comparison tools, buying guides, and HVAC-contractor directory are all free, with no sign-up required.

Is CoolVerdict independent?

Yes. Recommendations are based on specs and data, not paid placement — there are no sponsored rankings. Some retailer links do earn us a commission (as an Amazon Associate we earn from qualifying purchases), at no extra cost to you and with no effect on what we recommend or how units rank. See our affiliate disclosure for the details.

Where does CoolVerdict’s data come from?

Product specs come from manufacturer documentation and independent testing, shown with each unit’s true efficiency metric (CEER, EER, SEER, or SEER2). Contractor listings are compiled from public information. See How we rate.

How accurate are the running-cost estimates?

They are estimates based on each unit’s efficiency, typical usage of about 8 hours a day, and average residential electricity rates — your actual cost varies with your utility rate and habits. The calculator personalizes it to your room and state.