Vaillant ecoFIT Pure 825 25kW Combi Pack | 10020389 | A Rated

Description

The Vaillant ecoFIT Pure 825 Combi Restart Pack is a complete heating solution for UK homes, combining the 25kW ecoFIT Pure 825 combi boiler, a horizontal flue kit and a Vaillant Advance filter. Designed for gas fired central heating and instant domestic hot water, this compact ErP A-rated boiler pack is ideal for apartments, smaller homes and replacement installations where space, efficiency and quiet operation matter.

With a space saving 700 x 390 x 295 mm casing, Quiet Mark approved ultra quiet operation and a high efficiency pump, the ecoFIT Pure 825 helps reduce energy waste while delivering dependable performance. The included Vaillant Advance filter helps protect the heating system by capturing magnetic and non magnetic debris, supporting long term reliability and efficient operation.

25 kW

Combi output

10.4 L/min

Hot water flow at 35°C rise

A Rated

Heating and hot water

94%

ErP efficiency

Quiet Mark

Approved operation

10 Years

Warranty with Advance filter

Safety and installation: This gas combi boiler must be installed, commissioned and serviced by a Gas Safe registered engineer in accordance with the manufacturer’s installation instructions and current UK regulations, including BS 7671 where applicable.

Compatibility note: The horizontal flue supplied in this pack is intended for standard horizontal flue installations. Alternative flue configurations, extended flue runs and additional accessories may require separate components. Always confirm the flue route and system requirements before ordering.

Useful information: The Vaillant Advance filter is included to help protect the boiler and heating system from circulating debris. Vaillant warranty terms may be extended to up to 10 years when the boiler is installed with a Vaillant Advance filter, subject to registration and the manufacturer’s current warranty conditions.

Key Features

Compact 25kW Combi Boiler

The ecoFIT Pure 825 provides 25kW combi output for central heating and hot water, making it well suited to smaller homes and apartments.

Instant Hot Water

Delivers up to 10.4 litres per minute at a 35°C temperature rise, providing hot water directly from the mains without the need for a separate cylinder.

High Efficiency Performance

ErP A-rated for both heating and hot water, with 94% ErP efficiency and a high efficiency pump designed to reduce energy consumption and standby losses.

Ultra Quiet Operation

Quiet Mark approved, the ecoFIT Pure range is designed for low noise operation, helping it suit kitchens, utility rooms and other living spaces.

Space Saving Design

The compact 700 x 390 x 295 mm case and lightweight aluminium heat exchanger offer flexible siting options and easier handling during installation.

Complete Restart Pack

Includes the ecoFIT Pure 825 boiler, horizontal flue and Vaillant Advance filter, providing a convenient package for boiler replacement projects.

Technical Specifications

Boiler Details

Brand

Vaillant

Range

ecoFIT Pure

Model

ecoFIT Pure 825 Combi

Boiler article number

0010020389

Boiler type

Gas combi boiler

Fuel type

Natural gas

Performance

Central heating output

Up to 26.5 kW

Domestic hot water output

25.2 kW

Hot water flow rate

10.4 litres per minute at 35°C rise

Condensing output range

5.3-19.1 kW at 50/30°C

Non condensing output range

5.0-18.3 kW at 80/60°C

Maximum flow temperature

80°C

ErP efficiency

94%

Energy rating

A rated for heating and hot water

Dimensions and Weight

Boiler dimensions (H x W x D)

700 x 390 x 295 mm

Dry boiler weight

32 kg

Heat exchanger material

Aluminium

Pack Contents and Warranty

Included

ecoFIT Pure 825 combi boiler, horizontal flue and Vaillant Advance filter

Standard warranty

2 years

Extended warranty

Up to 10 years with Vaillant Advance filter, subject to Vaillant terms and registration

Installation

Must be installed by a Gas Safe registered engineer

Frequently Asked Questions

What size home is the Vaillant ecoFIT Pure 825 suitable for?

The 25kW ecoFIT Pure 825 is generally suited to smaller homes, flats and properties with one bathroom. A qualified heating engineer should assess your hot water demand, radiator system and gas supply before selecting the boiler output.

Does this pack include a flue and filter?

Yes. This Restart Pack includes the ecoFIT Pure 825 combi boiler, a horizontal flue kit and a Vaillant Advance filter.

Is the ecoFIT Pure 825 energy efficient?

Yes. It is ErP A-rated for both heating and domestic hot water, with 94% ErP efficiency. Its high efficiency pump and condensing operation help reduce wasted energy.

What warranty is included?

The boiler includes a 2 year standard warranty. Warranty cover may be extended to up to 10 years when installed with a Vaillant Advance filter, subject to Vaillant’s warranty terms, registration requirements and installation conditions.

Who can install this boiler?

Installation must be carried out by a Gas Safe registered engineer. The installation must follow the manufacturer’s instructions and all relevant UK gas, building and electrical regulations.

Why is a magnetic filter important?

The included Vaillant Advance filter helps capture magnetic and non magnetic debris within the central heating system. This can help protect the boiler, maintain efficiency and support reliable long term operation.

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Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

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Required Heating

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Watts

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