Kelvyn is AI-powered HVAC sizing. Snap a room, get a defensible kW load calibrated to your climate, and export a professional PDF quote — before you've left site. Built for installers who quote on the tools.
One standard photo per room — the app guides you (1× lens, no wide angle) so the read is accurate.
Kelvyn detects heat sources and dimensions, then lets you confirm measurements — the load recalculates live.
Add every room to one job per property and watch the total session load add up as you go.
One tap for a professional PDF report — climate-calibrated kW loads, ready to hand to the customer.
Kelvyn doesn't stop at the quote. Once a job is sized it hands straight to a FixMyAircon installer — so the free tool turns into real, booked work.
Start a new session
Try the live app ↗Rent it, buy it, or come in as an investor. Register your interest and we'll walk you through it — or try it free first.