Flint

Every boiler's service intelligence in your pocket.

Flint puts manuals, fault codes and structured service data for 1,000+ UK boiler models one search away — built for Gas Safe engineers who need answers on site, not after a trawl through PDFs.

FIND THE BOILER FAST
Search by model name, range or GC number. Recent boilers stay one tap away.

FAULT CODES THAT EXPLAIN THEMSELVES
50,000+ fault codes with plain-English causes, severity and the parts commonly replaced.

THE ACTUAL MANUAL
The manufacturer's installation & service manual, in-app and searchable.

SERVICE DATA AT A GLANCE
Combustion targets with tolerances (CO₂, CO/CO₂ ratio), gas pressures, service-mode steps, technical data and spec sheets — extracted from the manual, with page references.

TOOLS BUILT FOR THE JOB
Gas rate calculator with built-in stopwatch, combustion ratio, temperature rise, expansion vessel sizing, and manufacturer helplines.

FLINT PRO — YOUR AI ONSITE GUIDE
Ask any boiler a question and get answers grounded in its own manual, with page citations. Fault-finding, checks and servicing. £4.99/month or £49/year, cancel anytime.

Flint is reference software for competent professionals: always verify against the manufacturer's current documentation and work within your competence and Gas Safe registration.

Free account (verified email) opens all manuals. From OnSpec Software Ltd.