BoilerFix AI
Gas engineer's pro toolkit
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
BoilerFix AI is the complete professional toolkit for UK Gas Safe registered heating engineers — built by an engineer with 25 years on the tools, for engineers.
Stop juggling multiple apps, manuals and websites on a job. BoilerFix AI puts everything you need in one place, even when you're working in a signal blackspot.
What's included
Fault Code Database — over 1,868 fault codes covering 12 major manufacturers including Worcester Bosch, Vaillant, Baxi, Ideal, Potterton, Glow-worm, Alpha, Ariston, Intergas, Viessmann, Main and Vokera. Search by code, browse by manufacturer, get clear diagnostic guidance.
Controls Database — over 131 heating controls with full programming guides, wiring diagrams and troubleshooting for the most common controllers fitted in UK properties.
AI Diagnostic Assistant — describe a fault in plain language and get instant suggestions on likely causes and the correct diagnostic steps.
Boiler Passport — generate QR-linked boiler service histories that customers can scan to see complete records of every visit.
Customer Hub & Job Calendar — manage your customers, schedule jobs and track service history in one place.
CP12 Certificates — generate professional landlord gas safety certificates and email them directly to customers as PDFs.
Invoicing & Bookkeeping — create branded invoices, track payments and log expenses for your tax return. Built specifically for self-employed engineers.
Site Passport — for council and housing association engineers, scan QR stickers fixed to properties to see complete site history.
Cooker & Hob Installation Guide — full reference for safe installation in domestic and commercial settings.
Combustion Data Tool — log and reference flue gas analyser readings for service records.
Subscription tiers
Basic — Diagnostic tools, calculators, certificates and reference material. £3.99 per month.
Pro — Everything in Basic plus Customer Hub, Job Calendar, Invoicing, Bookkeeping and Boiler Passport. £5.99 per month.
7-day free trial. Cancel anytime in your iPhone Settings.
Built for life on the tools
Works offline once content is loaded — essential when you're in a basement boiler room with no signal. Optimised for use with cold or wet hands. Clear large text. No ads. No data sold to third parties.
Designed for UK Gas Safe registered heating engineers. Sign-up requires self-certification as a gas engineer.
Privacy Policy: https://boilerfix-ai.co.uk/privacy-policy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Questions or feedback? Email boilerfixai@gmail.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Initial release with Apple In-App Purchase subscriptions:
- Basic Monthly (£3.99/month) — fault codes, controls database, gas calculators, certificates and reference tools
- Pro Monthly (£5.99/month) — everything in Basic plus job calendar, customer hub, invoicing and Boiler Passport
Both subscriptions include a 7-day free trial.
Bug fixes and stability improvements.
The developer, Stephen Bird, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephen Bird
- Size
- 7.3 MB
- Category
- Business
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
- In-App Purchases
Yes
- BoilerFix AI Basic $3.99
- BoilerFix AI Pro $5.99
- Copyright
- © 2026 BoilerFix AI