Gas combination boilers or ‘combi’ boilers, heat water directly from the mains when you turn on a tap, so you won’t need a hot water storage cylinder or a cold water storage tank.

The Vaillant ecoTEC plus range of combination boilers is extremely reliable. All models have the quality of components and manufacturing that Vaillant is known for, providing outstanding performance and build quality. With continuous modulation and real combustion control by a multi-sensor system, Vaillant’s ecoTEC plus boilers achieve high efficiency at the lowest emissions. Each one is ultraquiet, a feature recognised by the Noise Abatement Society, which has awarded many of the ecoTEC plus range the Quiet Mark for its innovative design, specifically created to ensure a peaceful home for your customers.

Delivery in approximately 5-7 working days

Key features and benefits
• Boiler Plus compliant with Vaillant controls
Install with sensoHOME, sensoCOMFORT, vSMART, or VRC
700 for a smart weather compensated system
• Premium quality components
Includes brass diverter valve, ensuring highest reliability
and performance
• Wide modulation range of up to 1:6
Adapts perfectly to all systems in every situation, ensuring
lowest fuel bills for your customers
• Patented stainless steel heat exchanger
Provides superior heat transfer and highly
efficient performance
• 10-year guarantee available
A free five year guarantee comes as standard, rising to
seven years out of the box when registered on Advance. A
10-year guarantee is available when boilers are installed
with a Boiler Protection Kit and registered on Advance
• Easy installation and maintenance
Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even
more access
• Step by step full text installation wizard
For error free, quick and simple set-up and installation
• 38kW output model available
Delivers a range of flow rates to suit all properties
• Dedicated models available for LPG
A perfect solution for off-gas areas
• Compatible with Vaillant’s range of intelligent controls
Delivers an easy to use and energy efficient system, saving
money on energy bills
• Electronic gas and air modulation system
Allows precise self setting gas combustion to improve
performance and lower emissions
• Flame lift detection system
Enables more efficient and quieter combustion
• Push fit flue system with industry leading flue lengths
80/125 flue adaptor and system for even longer lengths
and installation flexibility
• Large backlit plain text display
Delivers clear visibility in poor light conditions and easy
reading of current boiler operation
• Features Vaillant’s exclusive AquaComfort system
Provides quick delivery of hot water at a constant
temperature, which reduces unnecessary water wastage
• Integrated filling loop
Makes installation even quicker
• Built-in two-stage frost protection
Ensures optimal performance all year round

Product details
Boiler Type: Combi
Depth: 338 mm
Height: 720 mm
Width: 440 mm
Maximum Horizontal Flue 100mm: 12 m
Maximum Horizontal Flue 125mm: 39 m
Maximum Vertical Flue 100mm: 12 m
Maximum Vertical Flue 125mm: 41 m
External or Internal: Internal
DHW Output: 25.4 kW
DHW Response 1m from Tap: 5 sec
DHW Flow Rate at 35 Degree Rise: 10.5l/min
DHW Output Min and Max: 25.4 kW
SEDBUK SAP 2009 Rating: 91.20%
SEDBUK SAP 2005 Rating: A
CH Condensing Max Output: 19.6 kW
Heat Output: 25 kW
Fuel Type: Natural gas
Includes: Boiler only
Noise Level: 46 dB
Nox Class: 5
Solar Compatible: Yes
Type: Boiler
Years Guaranteed: 5
Registered with the Energy Savings Trust: Yes
Manufacturer Model No: 10021823
Brand Name: Vaillant

Features & benefits
This product will help to lower the energy use in your home, and supports sustainable living through better use of resources
Patented stainless steel main and secondary heat exchanger
Fully modulating low NOx burner and fan
Instant hot water delivery in just 5 seconds
Wide modulation range of up to 1:6
Flame lift detection system
Stylish contoured case design with down flap and manual pressure gauge
Built-in-two-stage frost protection
Quiet Mark accreditation
Compatible with auroTHERM air to water heat pump hybrid system