Added a link to TradeTools — the one-app version of this calculator and 61 more, for HVAC, electrical, plumbing, fire protection, solar and carpentry. Nothing else changed.
Only the current version so far — new entries appear as the app ships updates.
HVAC Heat Load BTU Calculator is a tools app by Rizvan Adzhoyan with 1,000+ downloads (about 1.9K estimated). +99 installs in the last 7 days. Released Apr 3, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Manual J heat load calculator. BTU sizing, ASHRAE climate zones.”
