HVAC Calculators
Tools for HVAC contractors.
HVAC calculators and tools by BuildSolver. ACCA Manual J/S/D and ASHRAE procedures executed as deterministic code. Free, no signup.
Equipment selector
Manual S Equipment Selection
Match Manual J cooling and heating loads to AHRI-certified equipment. Sensible/latent split, derate factors at design conditions.
Standard: ACCA Manual S 2nd Edition