HVAC Calculator - FieldCalcv1.0.1

What changed

• ContentAdded support for R-454B and A2L refrigerants
• New featureEnhanced PT chart with bubble and dew pressure glide display
• New featureAdded superheat and subcooling diagnostics with target ranges
• New featureAdded duct sizing and Manual J load estimation tools
• New featureAdded psychrometric calculations for dew point, wet bulb, and enthalpy
• New featureIntegrated full unit converter for HVAC-specific measurements
• New featureAdded calculation history with notes, pinning, and PDF export
• New featureEnabled 100% offline functionality for field use
• MonetizationEstablished one-time purchase model with no subscriptions or ads

Original release notes

What's New in v1.0.1:

• R-454B & A2L refrigerant support — ready for the 2025 phase-out
• Enhanced PT chart with bubble/dew pressure glide display
• Superheat & subcooling with target-range diagnostics
• Duct sizing (equal-friction method) and Manual J load estimates
• Psychrometrics: dew point, wet bulb, enthalpy
• Full unit converter: °F/°C, PSIG/kPa, CFM/m³·h, BTU/kW
• History with notes, pinning, and PDF export
• 100% offline — no internet needed in the field

No subscription. No ads. Buy once, own forever.