Independent · data-driven · free

Find the right AC
in 60 seconds.

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.

49
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
Smarfle CRM Expands AI-Powered HVAC CRM Tools as Contractors Look to Improve Lead Response and Customer Operations Financialcontent Energy Monitoring Moves to the Big Leagues Green Building Advisor HVAC System for SIP home Green Building Advisor Cooper&Hunter Shares What Homeowners Should Know Before Buying a Mini Split System Financialcontent 822 Heat & Air Expands Commercial HVAC Installation and Air Conditioning Repair Services Across North Texas Reformer.com Central Plumbing, Heating & Air Conditioning Highlights Two Decades of HVAC Excellence in Pennsylvania Counties Reformer.com How to keep cool in this year's extreme summer heat even without air conditioning Laist Sunrun ‘distributed data center’ pilot taps its home solar and battery network Utility Dive Cooper&Hunter Highlights the Engineering Behind Reliable Mini Split Performance Financialcontent 1524 Haven , Salina, KS 67401 Themercury Vashon Island Film Festival Announces Lineup, New Indian Chai Café Opens in Lakewood, and More Headtopics How Paris uses the Seine to cool thousands of buildings without AC The Optimist Daily Three CT prisons have limited AC as temperatures soar Connecticut Public How to keep cool in this year's extreme summer heat even without air conditioning Wlrn HVAC service calls surge as warm weather strains air conditioning units Wsaw HelloNation Examines Car AC Repair With Automotive Expert Devon Reed Pr Newswire Smarfle CRM Expands AI-Powered HVAC CRM Tools as Contractors Look to Improve Lead Response and Customer Operations Financialcontent Energy Monitoring Moves to the Big Leagues Green Building Advisor HVAC System for SIP home Green Building Advisor Cooper&Hunter Shares What Homeowners Should Know Before Buying a Mini Split System Financialcontent 822 Heat & Air Expands Commercial HVAC Installation and Air Conditioning Repair Services Across North Texas Reformer.com Central Plumbing, Heating & Air Conditioning Highlights Two Decades of HVAC Excellence in Pennsylvania Counties Reformer.com How to keep cool in this year's extreme summer heat even without air conditioning Laist Sunrun ‘distributed data center’ pilot taps its home solar and battery network Utility Dive Cooper&Hunter Highlights the Engineering Behind Reliable Mini Split Performance Financialcontent 1524 Haven , Salina, KS 67401 Themercury Vashon Island Film Festival Announces Lineup, New Indian Chai Café Opens in Lakewood, and More Headtopics How Paris uses the Seine to cool thousands of buildings without AC The Optimist Daily Three CT prisons have limited AC as temperatures soar Connecticut Public How to keep cool in this year's extreme summer heat even without air conditioning Wlrn HVAC service calls surge as warm weather strains air conditioning units Wsaw HelloNation Examines Car AC Repair With Automotive Expert Devon Reed Pr Newswire
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.

See full comparison
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

“Check Price” opens the retailer’s listing in a new tab. Prices are set by the retailer.

For installs & repairs

Need a real human to install it?

Mini-splits and central systems need a licensed pro. Browse established, top-rated HVAC contractors across all 50 states — ratings, specialties, and experience at a glance.

4.8★+
avg. Google rating of listed pros
~50 yrs
avg. time in business
Find a pro near you

Top-rated AC repair, install & maintenance contractors across all 50 states.

Browse HVAC pros
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, and any future affiliate links will be clearly labeled and will not influence rankings.

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.