Glow-worm boiler repair and servicing in London
A long-established value brand within the Vaillant group, with a large older installed base.
- Gas Safe registered and fully insured
- Diagnosed before it is quoted
- Price agreed before work starts
Mon–Fri 8:00–17:30 · Emergency callout available 24/7
Get a price for your Glow-worm
Four details get an engineer moving. The rest is optional.
Thanks — we’ve got it
We’ll come back to you on the number you gave us. If it’s urgent and you’d rather not wait, call 020 3488 3737.
Glow-worm boilers
Glow-worm sits within the Vaillant group as its value range, and has been fitted in British homes long enough that the installed base spans several decades of product. In London we see them most in properties where the boiler was replaced on a budget rather than specified, and in landlord-owned flats.
What we see on Glow-worm boilers
- Older units at the end of their economic life
- Diverter and pressure faults typical of the age of the installed base
- Boilers fitted as a cheapest-option replacement in an unsuitable position
These are the patterns we see across the installed base, not a diagnosis of your boiler. Faults are identified on site before anything is quoted.
Glow-worm boiler work
-
Glow-worm boiler repair
Breakdowns diagnosed before anything is quoted.
-
Glow-worm boiler service
The annual check that keeps a warranty valid.
-
Glow-worm boiler installation
Sized for the property, with the price agreed first.
-
Replacing a Glow-worm boiler
Both figures — repair and replace — before you decide.
Glow-worm questions
- Is Glow-worm the same as Vaillant?
- Same group, different range. Glow-worm is positioned as the value brand and Vaillant as the premium one, so they are not the same product and do not share all parts — but both are well supported and neither is an orphan brand.
- Do you repair and service Glow-worm boilers?
- Yes. Gas work is carried out by Gas Safe registered engineers, which is the legal requirement for working on any gas boiler regardless of make.
We work on every make
Something wrong with your Glow-worm?
Send us the make, model and any fault code on the display and we can often tell you what is likely before an engineer sets off.