Darwen, Blackburn, Bolton, Rochdale, Oldham and around
Plumbing, heating and bathrooms, done properly.
Graham Johnson is a Gas Safe registered engineer and Vaillant Approved Installer based in Darwen. Boilers, full bathrooms and everyday plumbing, always with a detailed quote before any work starts.




Four trades, one engineer.
The same four badges you'll see on Graham's van. From a boiler service to a complete new bathroom, you deal with the same person from the quote to the handover.
Boilers and central heating
New and replacement Vaillant boilers, annual servicing, repairs, radiators and full heating systems. Gas Safe registered.
Complete bathroom installations
Bathrooms, en-suites and shower rooms, from the first visit and quote through to tiling and handover.
Everyday plumbing
Taps, toilets, showers, pipework and water systems fitted and maintained around the home. No job too small.
Repairs
Leaks, faults and wear and tear found and fixed, with the work explained before it goes ahead.
Vaillant ecoTEC Pro,fitted by Graham
Vaillant boilers. Only Vaillant.
Graham fits one make of boiler, and knows it inside out. He's a Vaillant Approved Installer, so a new boiler from him is fitted to the manufacturer's standard and backed by Vaillant.
- Approved by VaillantTrained and approved on the range he installs, not a general fitter working from the manual.
- One brand, known properlyFitting and servicing one make means quicker fault-finding and the right parts on the van.
- Longer guaranteesApproved installers can offer extended manufacturer guarantees on new Vaillant boilers. Graham confirms the cover for your model when he quotes.
Bathrooms, from strip-out to handover.
Drag the slider to compare the room as Graham found it with the finished job. Pick another job to swap it in.
What customers say.
At no point was I asked for additional money to cover x, y or z as the original quote had been so thorough.
His work ethic, professionalism and attention to detail is 1st class.
I cannot fault any aspect of Graham's work.
Rings show straight-line distance from Darwen. Shaded areas are towns; copper lines are main roads and motorways. Map data: Natural Earth.
Based in Darwen, working up to 20 miles out.
Graham now covers a wider patch: east to Rochdale and Oldham, west to Preston and Wigan, and north to Clitheroe. Close to the edge? Ask anyway.
- Darwen
- Blackburn
- Bolton
- Bury
- Rochdale
- Oldham
- Accrington
- Burnley
- Chorley
- Preston
- Leyland
- Wigan
- Horwich
- Ramsbottom
- Rossendale
- Heywood
- Clitheroe
- Littleborough
- Edgworth
Including the villages around Darwen: Hoddlesden, Belthorn, Lower Darwen, Feniscowles, Pleasington, Tockholes, Egerton and Turton.
Tell Graham about your job.
Ring, send a WhatsApp or fill in the short form. He'll get back to you to arrange a visit and a free, detailed quote.
