Superheat, subcooling and PT on one screen.
A one-page calculator for HVAC/R techs. Type your readings. Get the answer.
Built by a Red Seal refrigeration mechanic in Calgary.
Free while in beta. Beta testers never pay.
Already a tester? Open the calculator Submit bugs or feedback
Built for the roof, not the office
- One page. No steps, no menus. Readings in, answer out.
- Superheat uses the dew point. Subcooling uses the bubble point. The calculator does this for you.
- Free PT charts. Open the PT charts. One tap from the calculator.
- 15 refrigerants now, including R-410A, R-22, R-32, R-134a and R-290. More coming during beta.
- Add it to your phone's home screen. It opens straight to the calculator. How to add it
- More one-page calculators are coming during beta. They will replace the old step screens one at a time.
Who it's for
Field techs, apprentices and refrigeration mechanics. Built by a Red Seal refrigeration mechanic in Calgary.
The beta deal
- Who: HVAC/R techs and apprentices who work in the field.
- You get: the app free now. Beta testers never pay.
- We ask: use it on real calls. Tell us what's wrong or missing.
- Spots: 50 testers only.
- After beta: new users pay $19.99 CAD/month.
- Coming soon: a refrigerant log. It's part of the same price, not charged separately.