trades and handymen brand
Vaillant
Vaillant is a German heating maker founded in Remscheid in 1874. In the UK it sells gas combi, system and regular boilers under the ecoTEC and ecoFIT names, plus heat pumps, with extended warranties through its Vaillant Advance installer scheme.
Last reviewed 6 October 2026
Built in
Germany (Remscheid)
Manufacturing since
1874
UK availability
Good UK dealer coverage
UK head office in Belper, Derbyshire, with Vaillant Advance installers across the country.
What Vaillant builds
Vaillant model ranges
| Range | What it is |
|---|---|
| ecoTEC sustain | condensing gas boiler in 24, 28 and 34kW outputs |
| ecoFIT pure | condensing combi boiler |
| aroTHERM plus | air source heat pump |
| flexoTHERM | ground source heat pump |
Every Vaillant model on GetBrent
11 models with figures from the maker or an official dealer. Open one for the full specification, photos and how it compares.
Vaillant ecoTEC plus 825 25kW combi
Gas combi boiler, 25.4 kW hot water output
Hot water output: 25.4 kW
Central heating output: 20.8 kW
Vaillant ecoTEC plus 832 32kW combi
Gas combi boiler, 31.8 kW hot water output
Hot water output: 31.8 kW
Central heating output: 26.4 kW
Vaillant ecoTEC plus 835 35kW combi
Gas combi boiler, 35 kW hot water output
Hot water output: 35 kW
Central heating output: 32.8 kW
Vaillant ecoTEC Pro 24kW combi
Gas combi boiler, 23.4 kW hot water output
Hot water output: 23.4 kW
Central heating output: 24.8 kW
Vaillant ecoTEC Pro 30kW combi
Gas combi boiler, 30 kW hot water output
Hot water output: 30 kW
Central heating output: 25.7 kW
Vaillant ecoFIT pure 825 25kW combi
Gas combi boiler, 25.2 kW hot water output
Hot water output: 25.2 kW
Central heating output: 19.1 kW
Vaillant ecoFIT pure 830 30kW combi
Gas combi boiler, 30 kW hot water output
Hot water output: 30 kW
Central heating output: 26.5 kW
Vaillant ecoFIT pure 835 35kW combi
Gas combi boiler, 35 kW hot water output
Hot water output: 35 kW
Central heating output: 26.7 kW
Vaillant aroTHERM plus 5kW
R290 monobloc air source heat pump, 5 kW heat output
Heat output: 5 kW
SCOP: up to 5.03
Vaillant aroTHERM plus 7kW
R290 monobloc air source heat pump, 7 kW heat output
Heat output: 7 kW
SCOP: up to 5.03
Vaillant aroTHERM plus 10kW
R290 monobloc air source heat pump, 10 kW heat output
Heat output: 10 kW
SCOP: up to 5.03
Vaillant models compared
The closest matches from other makes, side by side.
- Vaillant ecoTEC plus 825 25kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoTEC plus 832 32kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoTEC plus 835 35kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoTEC Pro 24kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoTEC Pro 30kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoFIT pure 825 25kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoFIT pure 830 30kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant ecoFIT pure 835 35kW combi vs Worcester Bosch Greenstar 2000 25kW combi
- Vaillant aroTHERM plus 5kW vs Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW
- Vaillant aroTHERM plus 7kW vs Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW
- Vaillant aroTHERM plus 10kW vs Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW
- Vaillant ecoTEC plus 825 25kW combi vs Worcester Bosch Greenstar 2000 30kW combi
How Vaillant compares
These are the makes buyers actually cross-shop against Vaillant.
Vaillant vs Worcester Bosch
Worcester Bosch builds gas, oil and electric boilers and heat pumps in Worcester, and is part of the German Bosch group. It is one of the most fitted boiler makes in British homes, and most installers carry its Greenstar range. Longer warranties come through its accredited installer scheme.
Vaillant vs Baxi
Baxi has made boilers in Britain since 1866 and now builds its gas boilers at a factory in Preston. Its 600 and 800 combi ranges are common replacements in houses and flats, and it also sells heat pumps and commercial heating.
Vaillant vs Ideal Heating
Ideal Heating has built boilers in Hull since 1906. The Logic and Vogue ranges cover combi, system and heat-only boilers for homes, and the company also makes heat pumps and commercial boilers.
Vaillant vs Viessmann
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.
Vaillant vs Glow-worm
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.
UK companies hiring and selling Vaillant
No listed company has told us they carry Vaillant yet.
That does not mean nobody near you does - most trades and handymen firms carry several makes and list none of them. Start with the companies covering your area:
Browse trades and handymen companiesOther makes
GetBrent is an independent directory of UK hire and sales companies. We are not a Vaillant dealer and have no affiliation with, or endorsement from, Vaillant. The Vaillant name and model names are trademarks of their owner, used here only to identify the products they refer to. Specifications vary by model year and market - always confirm weights, dimensions and towing limits with the supplier before hiring or buying.