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Birmingham Heating & Air
(205) 649-4480
Resources for Shelby County homeowners

HVAC tools. No signup. No bait.

Two field-grade calculators we use on real Chelsea, Calera, Columbiana, Montevallo, and Sylacauga jobs. The math is ACCA Manual J residential rule of thumb, tuned for Alabama's humid Cfa climate.

BTU Calculator hero — brass thermostat and tape measure
Tool 01 · Cooling load

BTU Calculator

Enter room dimensions, ceiling height, insulation, sun exposure, and occupants. Get required BTU/hr — tuned for Birmingham's humid subtropical climate. ACCA Manual J rule of thumb.

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Replacement vs Repair Calculator hero — aged condenser unit overgrown with kudzu
Tool 02 · Decision math

Replacement vs Repair

Three inputs — unit age, repair quote, repair frequency. Output: repair, lean repair, 50/50, or replace. Uses the $5,000 rule and lifecycle-cost math we apply on real quotes.

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When the tool runs out of road

Need a real Manual J?

For a measured load calc or a written replacement quote, call dispatch. We cover Chelsea, Calera, Columbiana, Montevallo, and Sylacauga.

Call (205) 649-4480