CoolVerdict

CoolVerdict is an independent guide to buying and running a room air conditioner in the US. The BTU calculator adjusts for room size, climate zone, su

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About CoolVerdict

CoolVerdict is an independent guide to buying and running a room air
conditioner in the US.

Start with the number that matters. The BTU calculator adjusts for your room\’s
size, climate zone, sun exposure, and insulation, rather than the
square-footage rule of thumb that gets roughly four in ten rooms wrong. From
there, compare currently-sold units side by side with specs stated in their
true efficiency metrics (CEER, EER, SEER, SEER2) instead of whichever figure
markets best, and see what each one actually costs to run on your state\’s
electricity rates.

When the job needs a professional, the directory lists vetted local HVAC
contractors, and HVAC Pulse tracks industry news daily.

Everything is free and needs no sign-up. Rankings come from the data alone: no
sponsored placement, no fake lab tests, and recalled units stay off the list no
matter how well they sold.

Key Features

BTU sizing calculator — sizes a room from seven inputs: floor area, ceiling height, climate zone, sun exposure, insulation quality, typical occupancy, and whether it\'s a kitchen (which adds a 4,000 BTU fixed load). Real product database — currently-sold units only, with specs shown in their true efficiency metric (CEER, EER, SEER or SEER2) rather than whichever number markets best. Side-by-side comparison — put units against each other on the specs that decide the purchase. Running-cost estimates — projected monthly cost per unit, based on its efficiency, your state\'s electricity rate, and local cooling-season length. State guides for all 50 states — each with its climate zone, kWh rate, and cooling months turned into real dollar figures. Vetted HVAC contractor directory — local pros for jobs that need installation. HVAC Pulse — a daily-updated feed of industry news. Buying guides — best units by category, plus explainers on what the efficiency ratings actually mean. Published methodology — how rankings are produced, openly documented. Free and no sign-up — nothing gated, no account required.

Use Cases

Sizing a window AC for a bedroom without guessing from floor area alone. Deciding between a window unit, a portable, and a mini-split for the same room. Working out what a unit will cost to run each month before buying it, at your own state\'s electricity rate. Sizing for an older, draughtier house, where poor insulation can add 15%+ to the cooling load. Sizing a kitchen or studio, where appliance heat changes the answer materially. Comparing two specific models on efficiency and running cost rather than on marketing claims. Finding a vetted local installer for a job that needs professional fitting. Understanding what CEER, EER, SEER and SEER2 mean while shopping.