AppMarketSpy › Reference › HVACalc
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App info
- Developer
- Bob Sanford
- Category
- Reference, Utilities
- Released
- Nov 16, 2025
- Version
- 1.2.0 (May 15, 2026)
- Price
- $0.99
- Size
- 9.3 MB
- Requires
- iOS 16.6
- Age rating
- 4+
- Languages
- English
In-app purchases
| Remove Ads | $0.99 |
Current prices, App Store US.
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About HVACalc
HVAC Calculators puts a field-ready reference in your pocket. Browse 40 purpose-built tools for system design, airflow, refrigeration, diagnostics, and economics so you can check loads, balance air, and verify performance before you leave the rooftop. **What you can do** Size comfort systems with BTU Load, AC/Furnace/Boiler/Heat Pump, ventilation load, make-up air, humidity control, and expansion valve calculators, plus an optional Manual J-lite per-surface envelope mode for defensible heating and cooling loads. Dial in airflow with Duct Sizing (round or rectangular, 1:1 through 4:1 aspect ratios), CFM vs ACH, friction loss, fan law, grille/diffuser sizing, and static pressure tools. Keep refrigeration and hydronics on point with refrigerant charge, line sizing, coil performance, pump head, water/gas pipe sizing, and glycol concentration helpers. Troubleshoot faster using superheat &…
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