Boiler Diagnostics
West Midlands
Not sure what's wrong with your boiler? Our £50 diagnostic service identifies the issue — fee deducted from repairs if you proceed.
"Nick diagnosed a fault that two other engineers couldn't find. Fixed it on the spot. Honest pricing and great service."
What We Diagnose
Common boiler problems we investigate and resolve
How Our Diagnostic Works
Full Inspection
We thoroughly examine your boiler and heating system
Identify Issue
Pinpoint the exact cause of the problem
Fixed Quote
Provide a no-obligation repair quote
Repair Option
£50 fee deducted if you proceed with repairs
£50 Diagnostic Fee — Deducted from Repairs
Our £50 covers the diagnostic visit. If you go ahead with repairs, we deduct the full £50 from your bill. You only pay once.
Boiler Diagnostics Near You
Diagnostic Reviews
Excellent service, quick, professional and reasonably priced. Call these guys first. Thank you Nik.
Trevor Bailey
3 days ago
Found NK gas service through Google Chrome. Contact was easy and updates to date of gas service were regular. Service engineer was efficient and friendly. Good price. Left the work area as found. Will...
Jayne & Terry Ramwell
3 days ago
Fab came and did my gas cooker as it was disconnected due to a leak and capped off. Job done in no time. Friendly polite guy and reasonable price too. I finally have my cooker back!!!!😂
Lisa Bond
Gas Cooker Repair
4 weeks ago
Diagnostics FAQs
Related Gas Services
Complete heating and gas solutions for your home
Your Boiler Diagnostics Expert
Nicholas King • Gas Safe #568305 • 12+ Years Experience
I've diagnosed thousands of boiler faults since 2014. When other engineers can't find the problem, I use systematic testing and experience to identify even the trickiest intermittent faults. I'll give you honest advice — sometimes repair isn't worth it, and I'll tell you straight.
Boiler Playing Up?
Book a £50 diagnostic — we'll find the problem and give you options
Last updated: January 2026