Baxi Duo-Tec 40

Type Combi boiler
Fuel Gas
Efficiency Rating A
Usual standard warranty offered 7 years***
Weight 40.2kg
Width x Height x Depth 390mm x 700mm x 285mm
Max kW Output 40kw
Flow rate 16.4l/min


The Baxi Duo-Tec 40kW boiler could provide effective hot-water and heating to a larger home with higher hot-water demands. Its innovative key functions and its 7-year manufacturer-backed warranty are just a few features that could make the Duo-Tec 40 a suitable heating solution***.

Product description

If your property has approximately 4 or more bedrooms, 20 radiators and 2 or more bathrooms, the Duo-Tec 40 combi boiler could be an ideal choice for you. Designed to deliver hot-water on demand and quality heating, this boiler could help you heat your home effectively without using excessive energy. You could therefore potentially lower your energy bills and reduce your carbon footprint**.

This A-rated boiler is manufactured with key features such as easy to use controls and selected smart thermostat compatibility, so providing your home with the heating it needs could be a simple task.


Ratings & Reviews

Baxi’s Duo-Tec 40 has received the following reviews and ratings:

  • 5-star efficiency rating
  • 4-stars for build quality
  • 3-star brand customer score
  • 4-star engineer rating
  • 5-stars for ease of servicing

(source: 26/10/18)

Similar Alternative Models

Interested in the Baxi Duo-Tec 40? If so, you could also consider the following combi boilers:

1. Ideal Vogue C40

  • Backlit 3.5” LCD full colour display
  • Multi-function buttons
  • Manufactured with premium components

2. Worcester Bosch Greenstar 42CDi Classic

  • Low energy pump to help reduce electrical usage
  • Boiler frost protection
  • Simple boiler controls

3. Baxi Duo-Tec 33

  • Same features as the Duo-Tec 40, just a lower kW output for smaller homes
  • 7-year manufacturer-backed warranty***
  • Hot-water on-demand

If you’d like to find our how much your new boiler installation could cost, try our free online quote tool today.

**Source: Saving calculated when replacing G-rated with A-rated boiler in a semi-detached house.

***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.