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Vaillant ecoTEC Plus 48kW & 64kW System

The Vaillant ecoTEC Plus 48kW and 64kW System boilers are part of the brand’s leading high output wall-hung boiler range.

Although designed for large homes and available in extremely high outputs, the ecoTEC Plus 48kW and 64kW System boilers are surprisingly compact. Both models are set up for properties that use natural gas but can be converted to LPG if required. The boilers have some very impressive feature and can be used with some of Vaillant’s latest controls to maximise comfort, efficiency and performance levels.

How Much Does this Boiler Cost?

Prices vary according to the heat output. The 48kW model costs around £2,200 and the 64kW unit has a slightly higher price tag of £2,600. You also need to factor in the cost of installation in order to know exactly how much you’re going to need to spend. As boiler prices and fitting costs differ between suppliers and installers, we suggest you shop around. When you compare prices, you stand more chance of saving money on both the boiler and installation.

How will I know if this Boiler is Suitable for My Home?

These high output models are system boilers, so you’ll need to install a separate hot water storage cylinder in order for your boiler to provide a constant supply of hot water. System boilers are recommended for dwellings with more than one bathroom and households with greater heating and hot water requirements. But, you need to remember that these are high output boilers, meaning they won’t be suitable for homes of all sizes. They are designed especially for large properties with higher than average heating and hot water demands.

When it comes to boiler sizing, many people appear to be under the impression that bigger is better but this simply isn’t true. If you purchase a boiler that is too big for your needs, your energy bills will rise and you’ll spend more money than you need to. To be on the safe side, you should consult a Gas Safe engineer prior to buying the ecoTEC Plus 48kW or 64kW System.

Is it a High Efficiency Boiler?

Both boilers are A-rated for energy efficiency, making them ideal if you want to reduce your carbon footprint and save some money on your bills. However, Vaillant has found a way to make these boilers even better. If you chose to have one of the boilers installed with a Vaillant intelligent control, you’ll be the proud owner of a boiler with an A+ rating. Optional energy efficient controls include the VRC 700 and vSMART, both of which allow you to control your heating using a smartphone.

Does this Boiler have a Good Range of Controls and Features?

They wouldn’t be Vaillant boilers if they didn’t have decent controls and features. All of the user controls are hidden behind a panel and include the necessities like a reset button and central heating temperature switch. And like we said before, you can choose from a selection of optional controls that help to improve not just efficiencies but also comfort levels. Both models come with a stainless steel heat engine to reduce emissions and minimise waste, as well as an air separator that enhances boiler longevity. They also have a good backlit display and two-stage frost protection.

How long is the Warranty on this Boiler?

Both the ecTEC Plus 48kW System and 64kW System come with a 5-year parts and labour warranty as standard. Vaillant is known for offering extended guarantees when certain conditions are met, so be sure to ask about this when discussing your options with boiler suppliers and Gas Safe registered installers.

ecoTEC Plus 48kW & 64kW System Boiler By Size and Price

ModelTypeDimensionsMaximum Flow RateOutputEfficiency RatingTypical Price
ecoTEC Plus 48kW SystemSystemH – 720 mm
W – 440 mm
D – 405 mm
N/A48 kWA 90% and above£2200
ecoTEC Plus 64kW SystemSystemH – 720 mm
W – 440 mm
D – 473 mm
N/A64 kWA 90% and above£2600

Summary of Important Information

  • Priced between £2,200 and £2,600
  • Heating output of 48kW or 64kW
  • 48kW unit dimensions: 720mm (H) x 440mm (W) x 405mm (D)
  • 64kW unit dimensions: 720mm (H) x 440mm (W) x 473mm (D)
  • Both use gas as their fuel source
  • A-rated for efficiency
  • Solar compatible
  • Smart compatible
  • 5-year warranty as standard

Pros and Cons

If you need a high output boiler for your rather large home, the Vaillant ecoTEC Plus 48kW or 64kW System could be the perfect solution because they don’t have any major drawbacks. You can find a full list of the pros and cons below.


  • Vaillant boilers have an overall Which? score of 80%
  • Suited to large homes
  • LPG compatible
  • High-quality components
  • Easy to install and maintain
  • Stainless steel heat engine – improves reliability
  • Air separator – keeps the boiler quiet and prolongs its life
  • Provides maximum energy efficiency – reduce fuel bills and carbon emissions
  • Compatible with solar thermal – additional savings
  • Compatible with VRC 700 and the vSMART app based heating control –  monitor and control your heating and hot water anytime and anywhere
  • Works with LPG if required – perfect for properties off the gas grid
  • 5-year warranty


  • Requires separate cylinder
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