Fault Finder
Work through a fault step by step, by code, model or symptom.
BoilerDoctorAid · The helpmate every engineer needs
The everyday digital assistant for gas engineers and heating businesses
Diagnose faults faster, finish certificates and reports on site, and run your jobs, team, quotes and invoices from one app on your phone.
Get Started — first month freeCreate your account — your first month is free
See the toolsScroll down to see every tool for engineers and businesses
Then £4.99 a month or £49.99 a year for your whole team. Cancel any time.
For engineers
Everything you need on the job
Technical Calculators
Gas rate, pipe sizing, radiator output, flow rates and conversions.
Boiler & Appliance Information
Pressures, test points and ratings for the appliance in front of you.
Service Checklists
Tick off a service, breakdown or safety check as you work.
Job Reports & Certificates
Turn the visit into a professional report or certificate the customer can keep.
Photos & Documentation
Before, during and after photos saved against the right job.
Customer Information
Past visits, appliances and paperwork, on the doorstep.
For businesses
Keep your engineers, jobs and customers organised
Team Management
Add engineers, set what they can see and keep the team tidy.
Team Calendar
Everyone's week in one place, by engineer or across the team.
Job Allocation
Send work to one engineer, several, or the whole team.
Customer Management
Every customer, property, appliance and visit in one record.
Quotes
Priced quotes with labour, materials and VAT, ready to send.
Invoices
Invoice from the job and get paid without re-typing anything.
Job Tracking
See what is booked, in progress, waiting on parts or finished.
Engineer Reports
What was done, what was found and what needs doing next.
Why engineers use BoilerDoctorAid
Less paperwork at night
Certificates, reports, quotes and invoices are done on site, from the job you are already on.
Faster diagnosis
Fault codes, step-by-step fault finding and appliance data in your pocket.
Keeps working offline
Carry on in a loft or basement with no signal; your work syncs when you are back online.
Your records, kept safe
Each business's customers and jobs are private to that business and its team.
One price for the whole team
A single subscription covers every engineer in your business.
Never miss a renewal
Certificate and service reminders show you who is due next.
From the first call to the completed job
- Step 1
Customer
Add the enquiry and property details.
- Step 2
Quote
Send a priced quote with labour and materials.
- Step 3
Schedule
Book it into the calendar.
- Step 4
Engineer
Assign one engineer, several or the team.
- Step 5
Work
Diagnose, calculate, tick checklists, take photos.
- Step 6
Report
Issue the report or certificate with a signature.
- Step 7
Invoice
Invoice from the job and track payment.
About BoilerDoctorAid
BoilerDoctorAid is made by DH Quality Ltd, a UK gas and plumbing business. It was built to put the tools engineers reach for every day — fault finding, technical references, calculators and paperwork — in one place, and to give businesses a simple way to run their team and jobs without juggling apps.
Read more about usFrequently asked questions
What does BoilerDoctorAid do?
It is a field app for heating and gas work. Engineers get fault finding, calculators, appliance information, checklists, certificates and job reports. Businesses also get customers, a team calendar, job allocation, quotes and invoices.
Who is it for?
Gas, plumbing and heating engineers, plus AC, heat pump and electrical engineers — working alone or as part of a company team.
How much does it cost?
Your first month is free. After that it is £4.99 a month or £49.99 a year, and one subscription covers your whole team. You can cancel any time.
How do I create an account?
Tap Get Started, sign up with your email or Google account, then set up your business. Engineers can join an existing business with an invite code from their company owner.
Can I use it on my phone?
Yes. It is built for phones first and runs in your phone's web browser, as well as on tablets and computers. You can keep working without signal and it syncs later.
Built for engineers. Built for teams. Built for the job.
Try every tool free for your first month. No commitment — cancel any time.
Start your free monthSign up in under a minute — your first month is free