The Vaillant ecoFIT Sustain 825 Gas Combi Boiler is a highly efficient domestic gas combi boiler designed to provide reliable central heating and hot water from a single compact appliance. With a 25kW output, A-rated energy efficiency and an A-rated ErP hot water rating, it is designed for household heating and hot water requirements.
Featuring a compact 390mm width, 295mm depth and 702mm height, the Vaillant ecoFIT Sustain 825 is suitable for domestic installations where efficient use of space is important. It runs on natural gas, is ready for 20% hydrogen and comes in a white finish. The boiler is supplied with a 2-year warranty and carries manufacturer stock code 0010020392.
25 kW Output
A Rated Efficiency
20% Hydrogen Ready
2 Year Warranty
Dimensions
390 × 295 × 702 mm
Applications & suitability
Domestic Heating
Designed specifically for domestic applications, providing central heating and hot water from one combi boiler.
Medium to Larger Homes
The 25kW output is specified as suitable for medium to large domestic homes.
Compact Installations
The compact 390mm-wide format is designed to make efficient use of available installation space.
Future Energy Compatibility
Ready for 20% hydrogen, supporting future-focused domestic heating installations.
Key specifications
| Manufacturer Stock Code |
0010020392 |
| EAN Code |
4024074778920 |
| Width |
390 mm |
| Depth |
295 mm |
| Height |
702 mm |
| Weight |
33.8 kg |
| Sub-Category |
Domestic Boiler |
| Colour |
White |
| Brand |
Vaillant |
| ErP Hot Water Rating |
A |
| Country of Origin |
GB |
| Manufacturer Part Number |
0010020392 |
| Warranty |
2 Years |
| Fuel |
Natural Gas |
| Energy Efficiency |
A |
| Application |
Domestic |
| Boiler Model |
ecoFIT Sustain |
| Output |
25 kW |
| Ready for 20% Hydrogen |
Yes |
| Category |
Combi |
| Includes Magnetic Filter |
No |
Installation & compatibility
The Vaillant ecoFIT Sustain 825 is a natural gas domestic combi boiler designed to provide both heating and hot water without a separate cylinder. Its compact dimensions of 390mm wide, 295mm deep and 702mm high make it suitable for installations where available space needs to be considered. The supplied information specifies that the boiler is ready for 20% hydrogen.
Design & performance benefits
25 kW Output
The 25kW output provides a domestic heating and hot water solution for the stated medium to large home application.
A-Rated Efficiency
An A energy efficiency rating supports efficient domestic heating operation.
A-Rated Hot Water
The A-rated ErP hot water classification indicates the supplied efficiency rating for hot water performance.
Compact Construction
The 390mm-wide, 295mm-deep casing provides a compact format for domestic boiler installations.
Additional installation features
Combi Configuration
Combines domestic heating and hot water provision within a single boiler system.
Natural Gas Fuel
Designed to operate using natural gas as the specified fuel type.
20% Hydrogen Ready
Specified as ready for 20% hydrogen, providing compatibility with the stated future fuel adaptation.
Ideal for
Domestic Homes
Designed specifically for domestic heating and hot water applications.
Medium to Large Properties
The supplied 25kW output is positioned for medium to large domestic homes.
Space-Conscious Installations
Compact dimensions make the boiler suitable for domestic installations where space is an important consideration.
Future-Ready Heating
Suitable for customers looking for a boiler specified as ready for 20% hydrogen.
The Vaillant ecoFIT Sustain 825 Gas Combi Boiler combines a 25kW output, A-rated energy efficiency, A-rated ErP hot water performance and compact dimensions in a domestic natural gas combi boiler. With 20% hydrogen readiness, a white finish, 33.8kg weight and 2-year warranty, it provides a practical heating and hot water solution for domestic installations.
At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.
🆓 Free Local Delivery (Orders £100 & above)
We offer FREE delivery on orders £100 or more
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