
Vaillant Boiler Prices
Now officially recognized as a Superbrand in Britain, Vaillant offers a selection of eight high-quality combi boilers. Established in 1984, Vaillant was the first boiler company to receive the "Quiet Mark" award, which acknowledges the minimal noise their boilers produce during operation.
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Combi Boiler Prices: What to Expect
The average cost of a new combi boiler typically ranges between £1,500 and £3,500. However, the exact price depends on factors such as the size of the boiler, the brand, and the complexity of the installation.
Prices by Boiler Size – Vaillant Combi Boilers
Combi boilers come in various sizes, with larger homes and those with more bathrooms requiring bigger boilers. Here's a general estimate of what you might pay based on boiler size:
- Small boiler (24-27kW): £1,500 – £2,000
- Medium boiler (28-34kW): £1,800 – £2,500
- Large boiler (35-42kW): £2,000 – £3,000
What Affects Combi Boiler Prices?
Several factors can influence the cost of your new combi boiler:
- Boiler Size: Larger homes require bigger boilers, which increases the cost.
- Brand: Premium brands like Worcester Bosch and Vaillant tend to charge more.
- Installation Complexity: If your installation requires extensive new piping or other additional work, the cost will be higher.
- Location: Labour costs vary depending on where you are in the UK, with areas like London and the Southeast typically being more expensive.

Vaillant boiler prices
Vaillant ecoTEC plus prices
The Vaillant ecoTEC plus 826 - 26kW model has dimensions of 720 x 440 x 352 mm. It provides an output of 19.8kW and a flow rate of 10.6 litres per minute. This boiler is rated efficiency class A, with an average price of £1,475.
The Vaillant ecoTEC plus 832 - 32kW model also measures 720 x 440 x 352 mm, offering an output of 24.9kW and a flow rate of 13.0 litres per minute. It is rated efficiency class A and is priced at approximately £1,541.
The Vaillant ecoTEC plus 836 - 36kW model has the same dimensions of 720 x 440 x 352 mm. It delivers an output of 29.9kW and a flow rate of 14.6 litres per minute. This model is classified as efficiency class A, with an average price of £1,705.
The Vaillant ecoTEC plus 840 - 40kW model measures 720 x 440 x 386 mm. It has an output of 29.8kW and a flow rate of 16.3 litres per minute. Rated efficiency class A, this model is priced around £1,810.
The Vaillant ecoTEC plus 940 - 40kW model is larger, with dimensions of 720 x 440 x 580 mm. It offers an output of 29.8kW and a higher flow rate of 18.0 litres per minute. This model is also rated efficiency class A, with an average price of £2,160.
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