Vaillant

About Vaillant

Vaillant is an award-winning German boiler manufacturer, founded in 1874. The company was a pioneer in developing gas-fired central heating and have carried on that expertise up to the present day.

Vaillant now operates in over sixty countries but remains a family-owned business. Although benefiting from German design and engineering, many Vaillant models including the ecoTEC range are manufactured in the UK at their plant in Derbyshire. 

Vaillant is a popular and renowned boiler manufacturer.  Over recent years, the company has focussed on efforts to improve energy efficiency. All of the boilers in their range are rated A for energy efficiency. Committed to the environment, Vaillant has invested in green initiatives, such as improving the recyclability of boiler components. They have won many sustainability and environmental awards for this work.

Vaillant

Alongside energy efficiency, Vaillant is best known for its technological innovation. The Vaillant vSMART™ app-based heating control system integrates with all newly-sold Vaillant models. The app is easy to install and provides remote management and self-learning technology which can help your home become more energy-efficient. 

Vaillant boilers are also known for their quiet performance, even when running at full capacity. Vaillant has received the Quiet Mark accreditation for its incredibly silent design and soundproofing technology. The Quiet Mark is an international award given to manufacturers of the quietest products.

Currently, the best-selling models in the Vaillant boiler range is the ecoTEC line.  EcoTECs are associated with efficient performance and on-demand hot water, as well as compact and lightweight design.

These boilers come in a range of sizes to suit every home’s heating and hot water needs.  They are also available as system, regular or combi boilers. A boiler is an expensive purchase, so it is important to make an informed choice. We describe the three Vaillant boiler types below.

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Vaillant Combi Boilers

Vaillant offers five different combi boilers in this range – ecoTEC exclusive with Green iQ, ecoTEC plus, ecoTEC plus combination store, ecoTEC pro and the ecoFIT pure combi.

The ecoTEC combi range is available in multiple outputs from 25 to 38 kW. No matter your budget or heating and hot water requirements for your home, there is a model that will be suitable for your home. These boilers feature stainless steel heat exchangers, offer high central heating and water flow rates, and supply heating and hot water without the need for a water tank or cylinder.

Vaillant System Boilers

Vaillant offers four different system boilers in this range – ecoFIT pure, ecoTEC exclusive with Green iQ, ecoTEC plus 48 and 64kW and ecoTEC plus.
The ecoTEC system boilers are available in outputs ranging from 25 to 38 kW. System boilers are better suited to homes with more than one bathroom and that have space for a water cylinder.
These boilers deliver a constant supply of hot water so are perfect for homes that need a reliable model.

Vaillant Regular Boilers

Vaillant offers two different regular boilers in this range – ecoFIT pure and ecoTEC plus.
The ecoTEC regular boilers are available in outputs ranging from 25 to 38 kW. Regular boilers are better suited for homes that have multiple bathrooms and that want to be able to access hot water from multiple parts of the home simultaneously.
These boilers are also more appropriate to integrate with renewable technologies such as solar panels and air pumps.

Vaillant Boiler Reviews

Vaillant ecoFIT pure

Fuel type: Gas
Available in: Vaillant ecoFIT pure Combi Boiler: 25kW, 30kW and 35 kW

Vaillant ecoFIT pure System Boiler: 12kW, 15kW, 18kW, 25kW and 30kW

Vaillant ecoFIT pure Conventional Boiler: 12kW, 15kW, 18kW, 25kW, 30kW and 35kW

Efficiency 94%
Hot water flow rate: 10.4 l/min (25kW), 12.2 l/min (30kW), 14.1 l/min (35kW)
Warranty: 2 year standard warranty


Vaillant ecoTEC exclusive with Green iQ

Vaillant ecoTEC exclusive with Green iQ (3)

Fuel type: Gas
Available in: Vaillant ecoTEC exclusive with Green iQ Combi Boiler: 35kW, 43kW

Vaillant ecoTEC exclusive with Green iQ System Boiler: 27kW

Efficiency 94%
Hot water flow rate: 14.5 l/min (35kW), 17.8 l/min (43kW)
Warranty: 10 years


Vaillant ecoTEC plus

Fuel type: Gas
Available in: Vaillant ecoTEC plus Combi Boiler: 25kW, 32kW, 35kW and 38kW

Vaillant ecoTEC plus System Boiler: 12kW, 15kW, 18kW, 24kW, 30kW and 37kW

Efficiency 89.3%
Hot water flow rate: 10.5 l/min (25kW), 13 l/min (32kW),  14.3 l/min  (35kW), 15.9 l/min (38kW)
Warranty: 5 years


Vaillant ecoTEC plus Combination Store

Vaillant ecoTEC plus Combination Store

Fuel type: Gas
Available in: 38kW
Efficiency 89.3%
Hot water flow rate: 20 l/min
Warranty: 5 years


Vaillant ecoTEC Pro Combi

Vaillant ecoTEC Pro Combi Boiler (1)

Fuel type: Gas
Available in: 25kW, 32kW, 35kW and 38 kW
Efficiency 94%
Hot water flow rate: 10.5 l/min (25kW), 13 l/min (32kW), 14.3 l/min (35kW), 15.9 l/min (38kW)
Warranty: 5 years


Frequently asked questions about Vaillant

As one of the UK’s most popular boiler brands, we are very often asked many questions about Vaillant and its boiler range. Below, we have detailed some of the frequently asked questions we receive about Vaillant.

Out of the Vaillant 2021 boiler range, the following models have stainless steel heat exchangers:

  • Vaillant ecoTEC exclusive with Green iQ combi
  • Vaillant ecoTEC plus combi
  • Vaillant ecoTEC plus combination store
  • Vaillant ecoTEC pro combi
  • Vaillant ecoTEC exclusive with Green iQ system
  • Vaillant ecoTEC plus system

Out of the Vaillant 2021 boiler range, the following models have aluminium heat exchangers:

  • Vaillant ecoFIT pure combi
  • Vaillant ecoFIT pure system
  • Vaillant ecoTEC plus regular
  • Vaillant ecoFIT pure regular

We are asked by many customers just how good Vaillant boilers are. Overall, we believe Vaillant boilers to be good. This is based on the technology employed across the range, the efficiency of its boilers, the flow rates offered by Vaillant combi boilers, and the fact that many of the boilers in the Vaillant range are equipped with stainless steel heat exchangers.

Our opinion of Vaillant boilers is also backed up by Which?, with the consumer organisation naming Vaillant as the UK’s top-scoring gas boiler brand in the Which? Best Buy 2020 report. To be awarded Best Buy Status, Vaillant asked more than 7,500 consumers about the boiler brand they own and whether they would recommend it to a friend. Which? also surveyed over 150 heating and plumbing engineers on their thoughts about the boiler brands they work with. By asking them about installation and services, fault fixing and the availability of parts and spares, Vaillant was awarded five stars for build quality, servicing, fixing common faults, and parts and spares availability.

Both our opinion and the opinion of Which? is reflected by Vaillant being rated excellent by Trustpilot. Based on over 14,500 reviews, Vaillant has a TrustScore of 4.6 on the review platform.

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