Vaillant Combi Boilers

'Combi’ is short for combination boiler and does two things, heats water and provides central heating for your home.They are ideal for smaller homes, as there's no need for a water storage tank, as the boiler's connected directly to the water mains so water is only heated as and when needed.

ecoTEC exclusive with Green iQ combi, The premium combination boiler
ecoTEC plus combi, The flexible combination boiler for any home
ecoTEC plus combination store, The solution for larger homes
ecoTEC pro combi, The smart combination boiler for small to medium homes
ecoFIT pure combi, The cupboard-size combination boiler for any home
  • The best in boiler performance, control and efficiency
  • Fully compatible with our vSMART™ heating control for optimum performance and smartphone app control
  • Eco-friendly and 85% recyclable
  • Hand-assembled in our award-winning Derbyshire manufacturing plant
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
The ecoTEC exclusive is the best in the business. It has our unique Green iQ mark which means it gives you the ultimate in energy efficiency, the lowest fuel consumption and lowest running costs. It’s smart, too. It’s the only boiler that can adapt itself so it’s always giving you the precise level of heat you need – which means less waste and lower fuel bills. And the ecoTEC exclusive range is our most climate-friendly boiler, with 85% of parts being recyclable at the end of its life. It’s compatible with the vSMART™ control so you can have the power to control your boiler from your smart phone or tablet. And like, all our models, it’s Quiet Mark approved, meaning it’s one of the quietest products in its category.
Vital Statistics
  • Two combination models covering 35 or 43kW heating output
  • A flow rate of 17.8 litres per min for fast instant hot water
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm (43kW): W 720 x H 440 x D 474
  • Works with LPG where required

Specifications

ecoTEC exclusive combi boiler range 35kW 43kW
SEDBUK SAP Seasonal Efficiency (%) 89.7 89.6
ErP efficiency rating for central heating A A
ErP efficiency rating for hot water A A
Boiler dimensions (H x W x D mm) 720 x 440 x 406 720 x 440 x 474
Maximum hot water flow rate (l/min) 14.5 17.8

  • High performance, control and efficiency
  • Precision heating to reduce your fuel bills
  • A wide range of heating control options, from our simple boiler timer right up to our vSMART™ smartphone app
  • Delivers hot water within 5 seconds (and no need for a storage tank or cylinder.)*
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
Every home is different. But the ecoTEC plus, with its range of heating outputs, is so flexible it can meet the demands of a whole range of homes and different lifestyles. That’s why it’s our flagship boiler.
Our goal is always outstanding performance: low energy consumption for hot water and central heating – and lower fuel bills for you. The ecoTEC plus is smart: when it knows you don’t need as much heating power, it can drop to using 16% of its maximum power saving on fuel and money.
Because we know that’s what you want from your boiler. You want it to be efficient, easy to use, reliable and quiet
Its straightforward backlit display, its stainless-steel heat exchanger, its premium components, and its Quiet Mark accreditation all mean that with the ecoTEC plus you can go tick, tick, tick and tick.
Vital statistics
  • Four combination models covering 25, 32, 35 or 38kW heating outputs
  • A flow rate of up to 15.9 litres per min for fast hot water*
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm (825 model): H 720 x W 440 x D 338
  • Works with LPG where required

*Dependent on the distance of the boiler from the taps

Specifications

ecoTEC plus combi boiler range 25kW 32kW 35kW 38kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.3 89.3 89.3 89.3
ErP rating for central heating A A A A
ErP rating for hot water A A A A
Boiler dimension (W x H x D mm) 440 x 720 x 338 440 x 720 x 338 440 x 720 x 338 440 x 720 x 406
Maximum DHW flow (l/min) 10.5 13.0 14.3 15.9
  • High performance, control and efficiency
  • Integrated hot water storage device at the back of the boiler
  • Hot water within 5 seconds* and up to 20 litres of hot water per minute
  • A wide range of heating control options, from our simple boiler timer right up to our vSMART™ smartphone app
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
If you have a larger home with high hot water demands, but you’d prefer not to install a hot-water cylinder or cold-water tank, the ecoTEC plus 38kW combination store is the boiler solution for you. Our goal is always outstanding performance: low energy consumption for hot water and central heating – and lower fuel bills for you. The ecoTEC plus is smart: when it’s on it can produce 20 litres per minute, significantly more than a traditional combination boiler could deliver. But when it knows you don’t need as much heating power, it can drop to using 16% of its maximum power saving on fuel and money. Because we know that’s what you want from your boiler. You want it to be efficient, easy to use, reliable and quiet. Its straightforward backlit display, its stainless-steel heat exchanger, its premium components, and its Quiet Mark accreditation all mean that with the ecoTEC plus you can go tick, tick, tick and tick.
Vital statistics
  • One storage combination model with 38kW
  • A flow rate of up to 20 litres per min for fast instant hot water*
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm: H 720 x W 440 x D 600
*Dependent on the distance of the boiler from the taps

Specifications

ecoTEC plus combination store 938 38kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.3
ErP rating central heating A
ErP rating hot water A
Boiler dimensions (H x W x D mm) 720 x 440 x 600
Maximum DHW flow rate (l/min) 20.1

  • Precision heating to reduce your fuel bills
  • A full range of thermostat controls, from our simple analogue timers to our vSMART™ app based control
  • Hand-assembled in Derbyshire by one operative from start to finish, in our award-winning manufacturing plant
  • 2 years guarantee as standard, with 5 to 10 years available when you book a Vaillant Advance installer

The ecoTEC pro is an ideal combi boiler for small-to-medium homes that need instant hot water – but don’t need a water tank.

It’s keeps things simple for you. The bright and easy-to-use display means operating the boiler is a doddle. And like, all our models, it’s Quiet Mark approved, meaning it’s one of the quietest products in its category.

But on the inside, the ecoTEC pro is super smart. It can adapt itself to give you only the heating you require, lowering your fuel bills. And premium parts like the stainless-steel heat exchanger keeps everything running smoothly and reliably.

Vital statistics

  • Three combi models covering 24, 28 or 30kW heating outputs
  • A flow rate of up to 12.3 litres per min for fast instant hot water
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm (825 model): H 720 x W 440 x D 338
  • Works with LPG where required

Specifications

ecoTEC pro boiler range 24kW 28kW 30kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.3 89.3 89.3
ErP rating central heating A A A
ErP rating hot water A A A
Boiler dimensions (H x W x D mm) 720 x 440 x 338 720 x 440 x 338 720 x 440 x 338
Maximum DHW flow rate (l/min) 9.6 11.1 12.3
  • High performance build, smart controls and efficiency
  • Compact enough to fit in a kitchen cupboard
  • A full range of heating control options, from our simple analogue timers to our vSMART™ smartphone app
  • Quiet Mark approved, meaning it’s one of the quietest products in its category.
  • 2 years guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
If space is at a premium in your home, the cupboard-size ecoFIT pure combination boiler is the choice for you. It’s designed to be flexible, with a rear flue option available to give you more choice where you put it. But being lightweight and compact, doesn’t mean you have to compromise on comfort. The ecoFIT pure’s powerful aluminum heat exchanger offers outstanding performance and low energy consumption for any home. It's smart, too. When you don't need as much heat, it will reduce itself to just 20% of its maximum output – meaning greater energy efficiency and lower bills for you. And because it works with vSMART™, you can control your low-cost, climate-friendly heating via the internet.
Vital statistics
  • Three combination models covering 25, 30 or 35kW heating outputs
  • A flow rate of up to 14.4 litres per min for fast instant hot water
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm: H 700 x W 390 x D 295

Specifications

ecoFIT pure combi boiler range 25kW 30kW 35kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.0 89.0 89.4
ErP rating for central heating A A A
ErP rating for hot water A A A
Boiler dimension (H x W x D mm) 700 x 390 x 295 700 x 390 x 295 700 x 390 x 295
Maximum DHW flow rate (l/min) 10.4 12.2 14.1

Vaillant System Boilers

System boilers, also known as sealed system boilers and have the heating and water systems built into the boiler itself. They are ideal for homes with more than one bathroom and give a constant supply of hot water.

ecoTEC exclusive with Green iQ system, The premium system boiler
ecoTEC plus system, The flexible system boiler for any home
ecoTEC 46kW & 65kW, ecoTEC high output boilers
ecoFIT pure system, The cupboard-size system boiler for any home
ecoTEC plus 48 and 64kW, High output wall-hung boiler range
  • The best in boiler performance, control and efficiency
  • Fully compatible with our vSMART™ heating control for optimum performance and smartphone app control
  • Eco-friendly and 85% recyclable
  • Hand-assembled in our award-winning Derbyshire manufacturing plant
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
The ecoTEC exclusive is the best in the business. It has our unique Green iQ mark which means it gives you the ultimate in energy efficiency, the lowest fuel consumption and lowest running costs. It’s smart, too. It’s the only boiler that can adapt itself so it’s always giving you the precise level of heat you need – which means less waste and lower fuel bills. And the ecoTEC exclusive range is our most climate-friendly boiler, with 85% of parts being recyclable at the end of its life. It’s compatible with the vSMART™ control so you can have the power to control your boiler from your smart phone or tablet. And like, all our models, it’s Quiet Mark approved, meaning it’s one of the quietest product in its category.
Vital statistics
  • One system model with a 27kW heating output
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm: W 720 x H 440 x D 338
  • Works with LPG where required

Specifications

ecoTEC exclusive system boiler 27kW
SEDBUK SAP Seasonal Efficiency (%) 89.6
ErP efficiency rating for central heating A
ErP efficiency rating for hot water A
Boiler dimensions (H x W x D mm) 720 x 440 x 338
  • High performance, control and efficiency
  • Precision heating to reduce your fuel bills
  • A wide range of heating control options, from our simple boiler timer right up to our vSMART™ smartphone app
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
Every home is different. But the ecoTEC plus, with its range of heating outputs, is so flexible it can meet the demands of a whole range of homes and different lifestyles. That’s why it’s our flagship boiler. Our goal is always outstanding performance: low energy consumption for hot water and central heating – and lower fuel bills for you. The ecoTEC plus is smart: when it knows you don’t need as much heating power, it can drop to using 16% of its maximum power saving on fuel and money. Because we know that’s what you want from your boiler. You want it to be efficient, easy to use, reliable and quiet. Its straightforward backlit display, its stainless-steel heat exchanger, its premium components, and its Quiet Mark accreditation all mean that with the ecoTEC plus you can go tick, tick, tick and tick.
Vital statistics
  • Six system models covering 12, 15, 18, 24, 30 or 37kW heating outputs
  • ErP A rated for both hot water and heating efficiency
  • Dimensions in mm (612 model): H 720 x W 440 x D 338
  • Works with LPG where required
*Dependent on the distance of the boiler from the taps

Specifications

ecoTEC exclusive system boiler 27kW
SEDBUK SAP Seasonal Efficiency (%) 89.6
ErP efficiency rating for central heating A
ErP efficiency rating for hot water A
Boiler dimensions (H x W x D mm) 720 x 440 x 338
  • Suitable for domestic and commercial projects
  • High quality stainless steel heat exchanger offers more resistance to oxidation and corrosion
  • All major components built-in for easy installation
  • Energy saving two-stage frost protection system and pressure sensor to monitor system pressure via diagnostics and a flow sensor
  • ErP A rated
With a whole host of built-in features, the installation and servicing of the ecoTEC 46kW & 65kW boilers could not be more straightforward. Lightweight for its class with a compact design and a comprehensive range of flues, fittings and accessories, the ecoTEC boiler can be sited almost anywhere. Suitable for both domestic and commercial buildings, in addition to properties with more complex layouts. The ecoTEC 46kW & 65kW boilers can be installed in cascade to provide a flexible and extremely efficient heating system. The ecoTEC 46kW & 65kW boilers utilise modulation of the gas valve to automatically optimise heat and hot water supply according to the demands on the system. ecoTEC 46kW is suitable for both natural gas and LPG applications. LPG conversion kits are available from Vaillant. Please note ecoTEC 65kW is only compatible with natural gas.
Features and benefits
  • High quality stainless steel heat exchanger - Offers more resistance to oxidation and corrosion
  • Pump included and integrated connection for expansion vessel - Easy installation
  • Built-in two-stage frost protection - Ensure optimal performance all year round
  • Fully modulating low NOx burner – Lower NOx emissions are achieved
  • Easy access to all components from the front, along with a single electronic circuit board and flue gas analysis point – Repairs and servicing are easier than ever
  • All models are equipped with an air separator with auto air vent and filter – To remove fine particles
  • A full range of intelligent eBUS controls, including weather compensators and multiple boiler management control systems – To ensure your system is reliable and easy to run, whatever your requirements
  • Push-fit flue system – Simple to install
  • LPG conversion kit available – Flexibility where mains gas is not available

Specifications

Technical Data Unit ecoTEC 46kW ecoTEC 65kW
Article number 0010017819 0010017820
Heat output range 80/60°C kW NG 12.3 - 44.1 LPG 12.5 - 45.0 NG 13.8 - 63.7
Heat output range 50/30°C kW NG 12.9 - 46.4 LPG 12.5 - 46.4 NG 14.6 - 67.6
Maximum heat input (net) kW 46 65
Heating
Minimum flow temperature °C 35 35
Maximum flow temperature °C 85 85
Nominal CH flow rate Δt = 20 K l/hr 1940 2750
General
ErP rating A A
Seasonal efficiency* - NG % 95.8 95.5
Dimensions (H x W x D) mm 800 x 480 x 450 800 x 480 x 472
Dry weight (includes pump) kg 46 75
  • High performance build, smart controls and efficiency
  • Compact enough to fit in a kitchen cupboard
  • A full range of heating control options, from our simple analogue timers to our vSMART™ smartphone app
  • Quiet Mark approved, meaning it’s one of the quietest products in its category
  • 2 years guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
If space is at a premium in your home, the cupboard-size ecoFIT pure system boiler is the choice for you. It’s designed to be flexible, with a rear flue option available to give you more choice where you put it. But being lightweight and compact, doesn’t mean you have to compromise on comfort. The ecoFIT pure’s powerful aluminum heat exchanger which offers outstanding performance and low energy consumption for any home. It’s smart, too. When you don’t need as much heat, it will reduce itself to just 20% of its maximum output – meaning greater energy efficiency and lower bills for you. And because it works with vSMART, you can control your low-cost, climate-friendly heating via the internet.
Vital statistics
  • Five system models covering 12, 15, 18, 25, 30 or 35kW heating outputs
  • Awarded Quiet Mark accreditation - one of the quietest boilers on the market, designed for a peaceful home
  • Patented 4-sided cooling and water agitation of the heat exchanger reduces stress on the heat exchanger for longer life reliability and reduced maintenance costs
  • Dimensions in mm: H 700 x W 390 x D 295

Specifications

ecoFIT pure system boiler range 12kW 15kW 18kW 25kW 30kW
ERP Efficiency 94 94 94 94 94
ErP rating for central heating A A A A A
ErP rating for hot water A A A A A
Modulation 1: X 1.23 1.53 1.84 2.55 3.06
ErP decibel rating (sound power) dB 45 48 49 51 54
PCDB seasonal efficiency % 89.8 89.9 89.7 89.7 89.9
Boiler dimension (H x W x D mm) 700 x 390 x 295
  • Compact design
  • Suitable for natural gas and LPG applications
  • High efficiency stainless steel heat exchanger
  • Full range of accessories available
The brand new, ecoTEC plus 48 and 64kW boilers are compact in size and much lighter than their predecessors – ecoTEC plus 46 and 65kW. These compact boilers are the perfect solution for large domestic projects requiring large outputs. At only 38kg the ecoTEC plus 48kW is lightweight and easy to install whilst the 64kW is 48kg, allowing installers to handle and fit the boilers hassle free. The internal ducted rain collector prevents rain ingress from the flue system depositing in the boiler casing, and the new gunmetal air separation device prevents unwanted vented emissions within the case, both of which help to protect the internal electronics within the boiler. ecoTEC plus 48 and 64kW can also be converted to LPG to cater for projects that are unable to use a natural gas supply. A full range of accessories are available to complete the ecoTEC 48 and 64kW heating systems.
Features and benefits:
  • Compact design – Smaller dimensions allow the boiler to be installed in tighter spaces
  • High efficiency stainless steel heat exchanger – ErP rated A+ the high efficiency heat exchanger enables lower running and ownership costs for end users
  • Rain ingress protection - Internal rain collector stops rain ingress from the flue system, preventing water depositing within the case and potentially damaging electrical components
  • Gunmetal air separator with system pressure gauge - Prevents unwanted vented emissions from depositing within the case and provides an accessible and removable front cover, to make cleaning during services straightforward
  • LPG compatible – allows flexibility where mains gas is unavailable
  • Full range of accessories available – Flues, plate heat exchangers and a full range of eBUS controls are all compatible\

Specifications

Technical data Unit 48kW 64kW
Article number 0010021520 0010021521
Nominal heat output range Natural Gas G20 at 20mb 50/30°C kW 7.8 - 44.1 11.0 - 58.7
Nominal heat output range Natural Gas G20 at 20mb 80/60°C kW 8.7 - 48.0 12.2 - 63.5
Conversion to LPG G31 at 37mb 80/60 kW 7.8 - 44.0 11.1 - 58.4
Conversion to LPG G31 at 37mb 50/30 kW 8.6 - 46.6 12.0 - 62.1
Nominal CH flow rate Δ t = 20 K l/hr 1900 2500
Heating setting range 30 - 80 30 - 80
Maximum flow temperature °C 80 80
ErP efficiency* % 94 94
ErP rating (heating/hot water) band A+ A+
Boiler dimensions (H x W x D) mm 720 x 440 x 405 720 x 440 x 473
Mounting weight approximate kg 38 48

Vaillant Regular Boilers

Regular boilers, also known as open vent boiler, provide central heating and hot water through a hot water storage cylinder, often found in an airing cupboard, and cold water tank usually found in the loft. They are perfect for homes with multiple bathrooms, as they can provide a lot of hot water at once.

ecoTEC plus regular, The regular open vent boiler for any home
ecoFIT pure regular, The cupboard-size regular open vent boiler for any home
  • High performance, control and efficiency
  • Compact enough to fit in a kitchen cupboard
  • A wide range of heating control options, from our simple boiler timer right up to our vSMART™ smartphone app
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
Every home is different. But the ecoTEC plus open vent boiler, with its range of heating outputs, is so flexible it can meet the demands of a whole range of homes and different lifestyles. It’s cupboard-size compact and has a rear flue option available to give you more choice where you put it. But just because it’s small, you don’t have to compromise on performance. Because we know that’s what you want from your boiler. You want it to be efficient, easy to use, reliable and quiet. Its straightforward backlit display, its aluminium heat exchanger, its premium components, and its Quiet Mark accreditation all mean that with the ecoTEC plus you can go tick, tick, tick and tick. And it’s smart too: when it knows you don’t need as much heating power, it can drop to using 16% of its maximum power saving on fuel and money.
Vital statistics
  • Six regular models covering 12, 15, 18, 24, 30 or 35kW heating outputs
  • ErP A rated for heating efficiency
  • Dimensions in mm: H 600 x W 375 x D 320
*Dependent on the distance of the boiler from the taps

Specifications

ecoTEC plus regular boiler range 12kW 15kW 18kW 24kW 30kW 35kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.3 89.3 89.3 89.3 89.2 89.2
ErP rating central heating A A A A A A
Boiler dimensions (H x W x D mm) 600 x 375 x 316 600 x 375 x 316 600 x 375 x 316 600 x 375 x 316 600 x 375 x 316 600 x 375 x 316
  • High performance build, smart controls and efficiency
  • Compact enough to fit in a kitchen cupboard
  • A full range of heating control options, from our simple analogue timers to our vSMART™ smartphone app
  • 2 years guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer
If space is at a premium in your home, the cupboard-size ecoFIT pure regular open vent boiler is the choice for you. It’s designed to be flexible, with a rear flue option available to give you more choice where you put it. But being lightweight and compact, doesn’t mean you have to compromise on comfort. The ecoFIT pure’s powerful aluminum heat exchanger which offers outstanding performance and low energy consumption for any home. It’s smart, too. When you don’t need as much heat, it will reduce itself to just 20% of its maximum output – meaning greater energy efficiency and lower bills for you. vSMART™ And because it works with vSMART™, you can control your low-cost, climate-friendly heating via the internet.
Vital Statistics
  • Six regular models covering 12, 15, 18, 25, 30 or 35kW heating outputs
  • ErP A rated for heating efficiency
  • Dimensions in mm: H 600 x W 375 x D 295

Specifications

ecoFIT pure Regular boiler range 12kW 15kW 18kW 25kW 30kW 35kW
SEDBUK SAP seasonal efficiency 2009 (%) 89.3 89.1 89.0 89.0 89.8 87.9
ErP rating for central heating A A A A A A
Boiler dimension (H x W x D mm) 600 x 375 x 295 600 x 375 x 295 600 x 375 x 295 600 x 375 x 295 600 x 375 x 295 600 x 375 x 295