Vaillant ecoTEC Plus 838

Type Combi boiler
Fuel Gas
Efficiency Rating A
Standard Warranty 2 years (or up to 10 years when registered through Vaillant Advance)
Weight 43kg
Width x Height x Depth 440mm x 720mm x 406mm
Max kW Output 38kw
Flow rate 15.9l/min


If it is a powerful and versatile boiler you’re looking for, the Vaillant ecoTEC Plus 838 could be a suitable choice to provide your home with efficient heating and hot-water.

This boiler is the largest and most powerful unit of the ecoTEC range and is typically well suited to larger homes that have a typically higher demand, whether that comes from a large family or a high number of cohabitants in a shared house.


Product description

It might be slightly larger than some other models, but Vaillant’s ecoTEC Plus 838 is a powerful unit that could supply larger homes with high-efficiency central heating – and still pack it into a compact unit.

It’s designed to respond to high demands, so multiple taps could be used at once thanks to its high flow rate of 15.9 litres per minute. Also, with a standard 5-year warranty, you could have peace of mind in knowing that should a fault occur with the boiler, you could receive a repair or replacement at no cost***.


Ratings & Reviews

The Vaillant ecoTEC Plus 838 has received praise from the industry, so you could have confidence in the product you’re purchasing. Here are a select few to give you an idea of its performance:

  • 5-star efficiency rating
  • 4-star brand reliability
  • 5-star brand customer score
  • 5-star engineer recommendation
  • 5 stars for ease of servicing


*Source: Which as of 03/09/2018.


Similar Alternative Models

You could compare a number of different models with the ecoTEC Plus 838 to understand which boiler may best suit your home. We’ve selected a few to get you started on your journey to making the right decision for your central heating for years to come:

1. Vaillant ecoTEC Plus 835

  • Typically most suitable for medium-sized homes with average demand
  • Slightly lower flow rate of 14.3 litres per minute
  • More compact with a depth of 372mm (versus 406mm)

2. Ideal Logic c35

  • User friendly pressure gauge
  • Typically suited for smaller homes with lower than average demands
  • More compact at only 700mm high

Worcester Bosch 38CDi Classic

  • Simple boiler controls
  • Clear temperature display
  • Frost protection

You could use our free online quote tool today to get an idea of how much it might cost to install a new boiler in your home with HomeServe.


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*** Subject to an annual service at the customer's expense. Warranty extension from 5-years to 10-years only available on Worcester Bosch and Ideal gas boilers.