• speech bubble icon Get the best quotes, fast!
  • pin icon Over 5,000 engineers across the UK
  • checkbox icon Gas Safe registered engineers
Need a new boiler? Get FREE no-obligation quotes now!
Get FREE no-obligation quotes now!
  • No delays! Get quotes today
  • Compare quotes & get the best prices
  • Gas Safe & OFTEC registered engineers
The smarter way to find approved boiler engineers
8.6 out of 10
Trust Pilot
8.6 out of 10
Trust Pilot

Filter boilers

Fuel type

Boiler type

Manufacturer

Vaillant ecoTEC plus 838 Combi Gas Boiler

Vaillant ecoTEC plus 838 Combi Gas Boiler Boiler
Typical price (inc VAT)
£1355
Typical installation costs (inc VAT)*
£500 - £1,000

Need a new boiler?

Get a quote to supply & fit this boiler

Need a repair instead? Get a repair quote
Make Vaillant
Model ecoTEC plus 838 Combi Gas Boiler
Is Condensing Condensing
Efficiency Rating 89.3%
Band Rating B Rated
LPG Compatible No
Standard Warranty 5 Years
kW Options 38kW
Mounting Wall Mounted
Flow Rate 2 l/min
Typical price (inc VAT) £1355
Typical installation costs (inc VAT)* £500 - £1,000
ERP rating A Heat A Water

Need a new boiler?

Get a quote to supply & fit this boiler

Need a repair instead? Get a repair quote
Product Description

The Vaillant ecoTEC Plus 838 is a condensing combi gas boiler that’s the perfect choice for homes with higher demand for heating and hot water.

What output rating does this boiler have?

The Vaillant ecoTEC Plus 838 has an output rating of 38 kW, which is best suited to larger homes with 2+ bathrooms and a higher demand for heating and hot water.

How efficient is this boiler?

The ecoTEC Plus 838 is a highly efficient combi boiler, as shown by the 89.3% SEDBUK rating and ErP A-rating for heat. It also boasts an A-rating for hot water thanks to a flow rate of 2 litres per minute.

Is a combi boiler the right one for my home?

Combi boilers are great for smaller properties or properties where space is limited. As they do not require an external water tank or cylinder since everything is wrapped up in one cost effective unit .

Will this boiler save me money?


This is a cost effective boiler that will help to reduce your energy bills and the carbon footprint of your home. In addition, the unit is compact, making installation simpler and cheaper as a result.

Where can this boiler be installed?

This unit is a compact wall-mountable boiler that can fit inside a standard cupboard, should you want to install it in a garage or loft, the frost protection will keep the boiler running even in the depths of winter.

Does this range of boiler come with any options?

The Vaillant ecoTEC Plus range comes with several options to help you find the right boiler for your home. Firstly, as an alternative to natural gas, these boilers can also run on LPG. Also, should a 38 kW boiler be too powerful for the heating and hot water demands of your home, then 25 kW, 32 kW and 35 kW models are also available.

What features does this boiler come with?

The Vaillant ecoTEC 838 is able to deliver up to 20 litres of hot water per minute and instant hot water in only 5 seconds, there’s also a wide modulation of up to 1:6 helping to ensure the boiler has a low energy consumption as well as achieving maximum efficiency with the flame lift detection system also delivering quieter combustion.

Within the boilers are a host of features that help to make it highly efficient, including built-in 2-stage frost protection to ensure the unit is protected all year round. Vaillant ecoTEC boilers are also ultra-quiet in operation, proven by the quiet accreditation mark.

What warranty does this boiler come with?

The Vaillant ecoTEC 838 comes with a 2 year warranty as standard meaning that you’re covered by Vaillant after the installation.

Get quotes to supply and fit a new

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

Write a review

Vaillant ecoTEC plus 838 Combi Gas Boiler Boiler

You are reviewing:

Vaillant ecoTEC plus 838 Combi Gas Boiler
Back to Vaillant ecoTEC plus 838 Combi Gas Boiler
Why not compare these similar boilers?
Boiler Model kW Efficiency Warranty Typical Price
Vaillant ecoTEC plus 825 Combi Gas Boiler 25kw 89.3% 5 years £1025 COMPARE
Vaillant ecoTEC exclusive 832 Combi Gas Boiler 32kw 89.3% 3 years £1200 COMPARE
Vaillant ecoTEC plus 435 35kW Regular Gas Boiler 35kw 89.20% 5 years £1500 COMPARE
Vaillant ecoTEC plus 415 15kW Regular Gas Boiler 15kw 88.70% 5 years £790 COMPARE
Vaillant ecoTEC Pro 28 kW Combi Gas Boiler 28kw 89.3% 2 years £990 COMPARE
Vaillant ecoTec plus 937 Combi Gas Boiler 37kw 89.3.% 5 years £1500 COMPARE
Vaillant ecoTec plus 612 System Gas Boiler 12kw 89.0% 5 years £850 COMPARE
Vaillant ecoTec plus 615 System Gas Boiler 15kw 89% 5 years £965 COMPARE
Vaillant ecoTec plus 618 System Gas Boiler 18kw 89.3% 5 years £965 COMPARE
Vaillant ecoTec plus 624 System Gas Boiler 24kw 89.4% 5 years £1005 COMPARE
Vaillant ecoTec plus 630 System Gas Boiler 30kw 89.4% 5 years £1150 COMPARE
Vaillant ecoTec plus 637 System Gas Boiler 37kw 89.2% 5 years £1250 COMPARE
Vaillant EcoTEC Exclusive 32kW Combi Gas Boiler 32kw 89.8% 5 years £1395 COMPARE
Vaillant EcoTEC Exclusive Green IQ 835 Combi Gas Boiler 35kw 94% 5 years £1195 COMPARE
Vaillant ecoTEC Pro 30kW combi Gas boiler 30kw 89.3% 2 years £950 COMPARE
Vaillant EcoFIt sustain 825 Combi Gas Boiler 25kw 89.3% 5 years £1250 COMPARE
Vaillant EcoFIt sustain 830 Combi Gas Boiler 30kw 89.3% 5 years £1500 COMPARE
Vaillant EcoFIt sustain 835 Combi Gas Boiler 35kw 89.3% 5 years £1300 COMPARE
Vaillant ecoFIT pure 612 system Gas boiler 12kw 89.3% 5 years £925 COMPARE
Vaillant ecoFIT pure 615 system Gas boiler 15kw 89.1% 5 years £915 COMPARE
Vaillant ecoFIT pure 618 system Gas boiler 18kw 89% 5 years £975 COMPARE
Vaillant ecoFIT pure 625 system Gas boiler 25kw 89% 5 years £1175 COMPARE
Vaillant ecoFIT pure 630 system Gas boiler 30kw 89.3% 5 years £1256 COMPARE
Vaillant ecoTEC plus 832 Combi Gas Boiler 32kw 89.3% 5 years £1125 COMPARE
Vaillant ecoTEC plus 835 Combi Gas Boiler 35kw 89.3% 5 years £1275 COMPARE
Vaillant ecoTEC plus 838 Combi Gas Boiler 38kw 89.3% 5 years £1355 COMPARE
Vaillant ecoTEC plus 430 Regular Gas Boiler 30kw 89.3% 5 years £1550 COMPARE
Vaillant ecoTEC plus 424 24kW Regular Gas Boiler 24kw 89.3% 5 years £975 COMPARE
Vaillant ecoTEC plus 412 Regular Gas Boiler 12kw 89.3% 5 years £825 COMPARE
Vaillant ecoTEC plus 418 Regular Gas Boiler 18kw 89.3% 5 years £875 COMPARE
Vaillant ecoTEC Pro 24 kW Combi Gas Boiler 24kw 89.3% 5 years £955 COMPARE
Vaillant EcoTEC Exclusive Green IQ 843 Combi Gas Boiler 43kw 94% 5 years £1600 COMPARE
Vaillant EcoFIT pure 825 Combi Gas Boiler 25kw 89% 5 years £875 COMPARE
Vaillant EcoFIT pure 830 Combi Gas Boiler 30kw 89% 5 years £955 COMPARE
Vaillant EcoFIT pure 835 Combi Gas Boiler 35kw 89% 5 years £1100 COMPARE
Vaillant ecoTEC exclusive Green iQ 627 System Gas Boiler 27kw 94% 7 years £1100 COMPARE
Vaillant EcoTEC plus 938 Combi Gas Boiler 38kw 89.3% 5 years £1275 COMPARE
Vaillant Home 25kW Combi Gas Boiler 25kw 89.3% 2 years £1525 COMPARE
Vaillant Home 30kW Combi Gas Boiler 30kw 89.3% 2 years £1025 COMPARE
Vaillant Home 35kW Combi Gas Boiler 35kw 89.3% 2 years £1300 COMPARE
Vaillant EcoTEC 65kW System Gas Boiler 65kw 95.5% 2 years £1500 COMPARE
Vaillant EcoTEC 46kW System Gas Boiler 46kw 95.8% 2 years £2400 COMPARE
Vaillant EcoTEC Plus 64kW System Gas Boiler 64kw 94% 5 years £1500 COMPARE
Vaillant EcoTEC Plus 48kW System Gas Boiler 48kw 94% 5 years £2490 COMPARE
Vaillant Home 12kW System Gas Boiler 12kw 89.4% 2 years £2090 COMPARE
Vaillant Home 15kW System Gas Boiler 15kw 89.4% 2 years £0 COMPARE
Vaillant Home 18kW System Gas Boiler 18kw 89.4% 2 years £0 COMPARE
Vaillant Home 25kW System Gas Boiler 25kw 89.4% 2 years £825 COMPARE
Vaillant Home 12kW Regular Gas Boiler 12kw 89.4% 2 years £0 COMPARE
Vaillant Home 15kW Regular Gas Boiler 15kw 89.4% 2 years £915 COMPARE
Vaillant Home 18kW Regular Gas Boiler 18kw 89.4% 2 years £855 COMPARE
Vaillant Home 25kW Regular Gas Boiler 25kw 89.4% 2 years £895 COMPARE
Vaillant Home 30kW Regular Gas Boiler 30kw 89.4% 2 years £925 COMPARE
Vaillant ecoFIT pure 12kW Regular Gas Boiler 12kw 89.3% 2 years £1005 COMPARE
Vaillant EcoFIT Pure 15kW Regular Gas Boiler 15kw 89.1% 2 years £715 COMPARE
Vaillant EcoFIT Pure 18kW Regular Gas Boiler 18kw 89% 2 years £760 COMPARE
Vaillant EcoFIT Pure 25kW Regular Gas Boiler 25kw 89% 2 years £825 COMPARE
Vaillant EcoFIT Pure 30kW Regular Gas Boiler 30kw 89.3% 2 years £965 COMPARE
Vaillant EcoFIT Pure 35kW Regular Gas Boiler 35kw 89.7% 2 years £1300 COMPARE

Need a new boiler?

Get FREE no-obligation quotes now!

8.6 out of 10
Trust Pilot
8.6 out of 10
Trust Pilot

Filter boilers

Fuel type

Boiler type

Manufacturer

FILTER
COMPARE