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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.

58
units compared
50
states covered
100%
independent
BTU Calculator

Size your AC in 60 seconds

320 ft²≈ 20 × 16 ft room
You need about
8,000–9,000 BTU
⚡ HVAC Pulse
● Jordan church attack survivor says assailant pointed handgun at him — Lufkindailynews● The Fall Cleaning Task That Can Help Your Mini Split Run Better All Winter — Slashgear● Company provides free HVAC unit for Vernon family in need — vernonmorningstar.com● Boiler bonus 2026 : incentives to be used before 2027 — irishdentist.ie● Low GWP Refrigerants Market worth $13 . 06 billion by 2031 - Exclusive Report by MarketsandMarkets™ — prnewswire.com● 2026 Subaru Outback Pops Like a Finger Leaving a Coke Bottle on Left Turns , But One Owner Made It Stop by Turning Off the HVAC — torquenews.com● New Army HVAC task force to help keep barracks cool , following KRDO13 Investigates report — krdo.com● Treasure Valley Commercial HVAC Contractor CMC Mechanical LLC Warns Facility Managers of Winter Equipment Failures — theusnews.com● Bethany Air Expands Comprehensive Climate Control Solutions as Leading HVAC Contractor in Edgewater, MD — Financialcontent● Houston Commercial Boiler & Heating Tune-Up: Winter Maintenance Guide Released — Financialcontent● Before You Turn Up the Heat : What Is Your HVAC System Trying to Tell You ? — centralmoinfo.com● Henrico County Schools facilities director out amid ongoing HVAC issues — 12onyourside.com● Conditioning For Classic Cars Universal Underdash Air Conditioning Kit 406 . 4V 12V Cond 14X20 And Elec Harness Universal Ac Kit — roarmag.org● 36 % of Homeowners Draw the Line at AI Replacing HVAC Expertise — achrnews.com● More Trades , More Opportunities for HVAC Contractors — achrnews.com● Geothermal heat pump market gains momentum in Europe — renewableenergymagazine.com● Jordan church attack survivor says assailant pointed handgun at him — Lufkindailynews● The Fall Cleaning Task That Can Help Your Mini Split Run Better All Winter — Slashgear● Company provides free HVAC unit for Vernon family in need — vernonmorningstar.com● Boiler bonus 2026 : incentives to be used before 2027 — irishdentist.ie● Low GWP Refrigerants Market worth $13 . 06 billion by 2031 - Exclusive Report by MarketsandMarkets™ — prnewswire.com● 2026 Subaru Outback Pops Like a Finger Leaving a Coke Bottle on Left Turns , But One Owner Made It Stop by Turning Off the HVAC — torquenews.com● New Army HVAC task force to help keep barracks cool , following KRDO13 Investigates report — krdo.com● Treasure Valley Commercial HVAC Contractor CMC Mechanical LLC Warns Facility Managers of Winter Equipment Failures — theusnews.com● Bethany Air Expands Comprehensive Climate Control Solutions as Leading HVAC Contractor in Edgewater, MD — Financialcontent● Houston Commercial Boiler & Heating Tune-Up: Winter Maintenance Guide Released — Financialcontent● Before You Turn Up the Heat : What Is Your HVAC System Trying to Tell You ? — centralmoinfo.com● Henrico County Schools facilities director out amid ongoing HVAC issues — 12onyourside.com● Conditioning For Classic Cars Universal Underdash Air Conditioning Kit 406 . 4V 12V Cond 14X20 And Elec Harness Universal Ac Kit — roarmag.org● 36 % of Homeowners Draw the Line at AI Replacing HVAC Expertise — achrnews.com● More Trades , More Opportunities for HVAC Contractors — achrnews.com● Geothermal heat pump market gains momentum in Europe — renewableenergymagazine.com
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 retailer ratings)
Cooling
12,000 BTU
Covers
500 ft²
Efficiency
22 SEER2
Noise
32 dB
$1099 est.
typical retail price
Midea Duo MAP12S1TBL
Best portable
Portable

Midea Duo MAP12S1TBL-A

4.0(79 retailer ratings)
Cooling
12,000 BTU
Covers
450 ft²
Efficiency
14.7 CEER
Noise
42 dB
$579 est.
typical retail price

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For installs & repairs

Need a real human to install it?

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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.