- No delays! Get quotes today
- Compare quotes & get the best prices
- Gas Safe & OFTEC registered engineers
What work do you require?

Fuel type
Boiler type
Manufacturer
-
ACV (13)
-
Alpha (49)
-
Ariston (35)
-
ATAG (17)
-
Baxi (79)
-
Biasi (31)
-
Daikin (3)
-
Electric Heating Company (17)
-
ELNUR (21)
-
Ferroli (36)
-
Firebird (137)
-
Glow-worm (50)
-
Grant (74)
-
Heatline (2)
-
Heatrae Sadia (7)
-
Ideal (122)
-
Intergas (24)
-
Johnson and Starley (6)
-
Keston (5)
-
Main (12)
-
Mistral (130)
-
Navien (26)
-
Potterton (74)
-
Ravenheat (25)
-
Vaillant (78)
-
Viessmann (41)
-
Vokera (32)
-
Warmflow (23)
-
Warmhaus (13)
-
Worcester Bosch (140)
-
Zanussi (7)
Vaillant Home 25kW System Gas Boiler


Make | Vaillant |
Model | Home 25kW System Gas Boiler |
Is Condensing | Condensing |
Efficiency Rating | 89.4% |
Band Rating | A Rated |
LPG Compatible | Yes |
Standard Warranty | 2 Years |
Central Heating Max. Output | 25kW |
Mounting | Wall Mounted |
Flow Rate | N/A |
Typical Price (inc VAT) | £825 |
Typical installation Cost (inc VAT)* | £500 - £1,000 |
Total Cost | £1,325 - £1,825 |
ERP Rating | A Heat |
Manufactured by Vaillant, the Home 25kW System Gas Boiler is a highly reliable condensing boiler that will help to make your home more efficient.
As a compact wall mounted unit, you’ll be saving that much needed space in your home thanks to dimensions of 740x418x300mm (HxWxD).
Featuring a 25 kW output rating, this boiler is perfectly suited to larger homes with a higher demand for heating and hot water, as well as homes with multiple bathrooms. Also available in a range of other outputs, such as 12kW, 15kW, and 18kW, there’s likely to be a boiler to suit the heating and hot water demands of your home. The high efficiency of this unit is shown through its ErP A rating and 93% efficiency, as well as having a SAP efficiency of 89.3%.
This boiler also comes with a wide range of other features, such as having a SAP performance up to 4% higher than normal boilers, it also features a modulation up to 1:5 for increased efficiency, a fully modulating low NOx burner and a no-fill condensate trap. The unit also comes with a contemporary design that has a bright interface and a choice of homeowner controls, giving you maximum control over your heating.
As this is a System boiler, it directly heats your central heating system and hot water from a storage cylinder. Most of the important parts of the hot water and heating system such as the pump and expansion vessel are built in on a System boiler, making it quicker and cleaner to install. This also means that you get a faster response to demand for heating and hot water, plus you don't need to have a feed and expansion tank in the loft. Available with a 2 year warranty, you can get this boiler installed with peace of mind that it won’t be letting you down.
* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.