trades and handymen - head to head
Glow-worm vs Viessmann
Both makes turn up on the same shortlists, and the honest answer is that they are built for different buyers rather than one being better than the other. Here is what actually separates them - from a directory that sells neither.
| Glow-worm | Viessmann | |
|---|---|---|
| Built in | United Kingdom (Belper) | Germany (Allendorf) |
| Making trailers since | 1934 | 1917 |
| UK availability | Available, smaller network | Good UK dealer coverage |
| Range covers | Domestic gas boilers, Boiler controls, Heating systems | Gas boilers, Heat pumps, Oil boilers, Electric boilers |
| Best known for | Ultimate3 Combi | Vitodens |
Choose Glow-worm if...
Glow-worm has made gas boilers in Belper, Derbyshire since 1934 and is part of the same group as Vaillant. Its Energy and Ultimate ranges are a common budget-to-mid-price choice for replacement combis.
Look at: Ultimate3 Combi, Energy, Easicom
Full Glow-worm profile →Choose Viessmann if...
Viessmann is a German heating maker founded in 1917 in Allendorf and now owned by Carrier. Its Vitodens wall-hung gas boilers are sold in the UK alongside heat pumps, solar and hybrid systems.
Look at: Vitodens, aroTHERM, Vitovolt
Full Viessmann profile →Where to hire or buy either
Most UK trades and handymen companies carry several makes and advertise none of them, so the practical move is to find the firms covering your area and ask what is on the yard.
Glow-worm vs Viessmann - common questions
Is Glow-worm better than Viessmann?
Neither is better outright - they are built for different buyers. Glow-worm has made gas boilers in Belper, Derbyshire since 1934 and is part of the same group as Vaillant. Its Energy and Ultimate ranges are a common budget-to-mid-price choice for replacement combis. Viessmann is a German heating maker founded in 1917 in Allendorf and now owned by Carrier. Its Vitodens wall-hung gas boilers are sold in the UK alongside heat pumps, solar and hybrid systems.
Which is easier to get hold of in the UK, Glow-worm or Viessmann?
Glow-worm: Built at the Derwent Foundry in Belper and fitted by installers across the UK. Viessmann: Sold in the UK through Viessmann-trained installers, with longer warranties available through them.
Can I hire rather than buy?
Yes. Most UK trades and handymen companies hire as well as sell, and many carry several makes without listing them. Search by your area and ask what they have on the yard.
Other comparisons
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Brand and model names are the trademarks of their owners, used here only to identify the products they refer to. Specifications vary by model year and market - confirm weights, dimensions and towing limits with the supplier before hiring or buying.