Launching today
FieldCalc HVAC

FieldCalc HVAC

Offline HVAC calculator: R-454B PT, superheat, duct, load

11 followers

Visit website
Offline HVAC field calculator with R-454B PT charts, superheat/subcooling, duct sizing, load estimates & psychrometrics. No subscription, no ads, no tracking. Free PT charts (R-454B/R-32/R-410A) + unit converter. Pro: $9.99 one-time for all calculators, 13 refrigerants & PDF export. 100% offline — built for techs on the roof. Feedback welcome!

FieldCalc HVAC makers

Here are the founders, developers, designers and product people who worked on FieldCalc HVAC

Eden LeeIndie iOS dev. Privacy-first.
FieldCalc HVACFieldCalc HVAC