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.
Water Heater Sizing - BTU is a tools app by Rizvan Adzhoyan with 50+ downloads (about 57 estimated). +3 installs in the last 7 days. Released Apr 7, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Calculate water heater BTU requirements. Gas, electric, heat pump. Offline.”
