HVAC

HVAC & Cooling Calculators

Calculate room BTU requirements, AC cooling loads, and heating capacity with free HVAC calculators for home and commercial spaces.

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Instant ResultsCalculates in real-time as you type.

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100% AccurateIndustry-verified formulas and standards.

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All HVAC & Cooling Calculators

Estimate total room heating and cooling capacity in BTU/hr based on floor area, ceiling height, regional climate, and sunlight exposure. Note that BTU

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BTU per Square Foot Calculator

Calculate the heat density of your HVAC equipment in BTU/hr per square foot to sanity-check quoted heating and cooling systems. Comparing heat density

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AC BTU Calculator

Size room air conditioners, mini-splits, and window AC units using official ENERGY STAR thermal factor guidelines. Capacity is expressed in BTU/hr (co

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Room BTU Calculator

Calculate room-by-room heating and cooling requirements in BTU/hr to size ductless mini-split indoor heads, hydronic baseboard radiators, or PTAC unit

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