Glow-worm installers · Gas Safe registered
Get a fixed-price quote for a new Glow-worm boiler online, choose your installation date and have a Gas Safe registered engineer fit it. We install Glow-worm’s Energy and Ultimate ranges as combi, system and heat-only boilers.
Replacing your boiler with Glow-worm
Glow-worm has been making boilers in Belper, Derbyshire, since 1934 and has been part of the Vaillant Group since 2001. Its boilers carry Made in Britain certification and sit at a mid-range price.
We fit Glow-worm boilers as like-for-like replacements and conversions. The Energy range is a solid everyday choice for most homes, while the Ultimate range adds higher outputs and extra features for bigger households. Easicom is the simpler, budget-friendly combi.
The online quote shows the Glow-worm models that suit your home, with one fixed price for the job.
Glow-worm keeps its line-up simple, with three ranges covering most homes.
| Model | Type | Best for |
|---|---|---|
| Easicom | Combi | Simple, budget-friendly combi swaps |
| Energy | Combi, system or heat-only | Most homes; reliable everyday performance |
| Ultimate | Combi, system or heat-only | Larger homes wanting higher output and extra features |
Outputs and availability depend on your home, so your online quote only shows the Glow-worm models that suit it.
Glow-worm prices depend on the range, the output and the work involved. Across all brands, like-for-like combi swaps start from £1,759 fitted, and Glow-worm’s mid-range positioning makes it a good-value way to get a British-built boiler.
Every quote is fixed, so nothing is added after the survey. You can also spread the cost: as an example, a £1,799 boiler over 10 years at 9.9% APR works out at £23.26 a month, subject to status.
Glow-worm boilers are made in Belper, the same town as Vaillant’s UK factory, giving you British manufacturing without paying premium-brand prices.
The Energy combi suits most two- and three-bedroom homes and is a straightforward replacement for an older combi.
Energy and Ultimate system and heat-only models let you keep stored hot water if your home needs it.
The price depends on the range, output and work involved. Across all brands, like-for-like combi swaps start from £1,759 fitted, and your online quote shows a fixed price for the Glow-worm boilers that suit your home.
Glow-worm has been part of the Vaillant Group since 2001, and both brands make boilers in Belper, Derbyshire. They are separate ranges, with Glow-worm generally priced below Vaillant.
The Energy range suits most homes, Easicom is a simpler budget option, and the Ultimate range is better for larger homes with higher hot water demand.
Most like-for-like combi swaps are done in a day, with conversions and boiler moves usually taking one to two days.
Answer a few questions about your home, compare fixed-price Glow-worm boilers and book the installation date that suits you – all online.