BoilerFaultCodesFlint — your AI onsite guide
The app for heating engineers. Every boiler's manual, specs and fault codes in your pocket — on site, when you need them.
Free to use · works on any phone · built for UK gas, oil & LPG engineers
Every manual in your pocket
The full installation and service manual for the boiler in front of you — no hunting online on site.
Specs & service data instantly
CO₂ targets, gas pressures, fault codes and service mode — the numbers you need, straight to hand.
Skip the technical helpline
Stop waiting on hold to manufacturer helplines. The answer is already in the app.
AI that reads the manual
Ask Flint a fault-finding question and it answers from the specific boiler’s manual — with page citations. (Pro upgrade, available in-app.)
Free to use — Pro when you want the AI
Manuals, fault-code lookup, service data and gas tools are free. The Pro upgrade adds Ask Flint — AI fault-finding grounded in the exact boiler's manual. Upgrade any time inside the app.
Get started free