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Baxi Duo-tec Combi 40 Gas Boiler

From: £1,999.00

Get a quote to install this boiler.




Duo-tec Combi 40 Gas Boiler

Is Condensing


Efficiency Rating


Band Rating

A Rated

LPG Compatible


Standard Warranty

7 Years

Central Heating Max. Output

34.4 kW


Wall Mounted

Flow Rate

16.4 l/min

ERP Rating

A Heat, A Water

Hot Water Max. Output

40 kW

Product Description

The Baxi Duo-tec 40 is a wall-mounted condensing gas-fired combi boiler, the most powerful boiler in the range.

How efficient is the Baxi Duo-tec 40?

Baxi are well known for manufacturing highly efficient boilers and the Duo-tec range is no different. It has an efficiency rating of 92% and ErP A-rating for heat and hot water which can help to lower your energy bills.

Is the output rating suitable for my home?

The Baxi Duo-tec 40 is the most powerful boiler in the Duo-tec range with a central heating output of 34.4 kW and domestic hot water output of 40 kW. Such power means that it can meet the heating and hot water demands of properties with 15-20 radiators and 2 bathrooms.

Are there any other options available in the Baxi Duo-tec range?

In addition to this 40 kW model, lower output ratings of 24 kW, 28 kW and 33 kW are also available. This means that there’s an option for a number of different property types and sizes.

Is a combi boiler suitable for my home?

A combi boiler is a great heating system for small to medium-sized properties with 1-2 bathrooms. Larger properties are best suited to system or regular boilers. This is because combi boilers deliver hot water on demand, rather than storing it within a hot water cylinder.

How long is the warranty period?

Available with an extensive warranty of 7 years, you’ll be well covered by Baxi in the unlikely event of a fault after the installation.

What are the key features of the Baxi Duo-tec 40?

Features of the Baxi Duo-tec 40 include high hot water flow rates, user-friendly control panel, a frost protection thermostat, a pre-plumbing jig complete with pre-formed copper pipe tails, built in filling loop, and a one metre mains cable – which is all you need to get it installed nicely.

How big is the Baxi Duo-tec 40?

The Baxi Duo-tec 40 is a compact unit with dimensions of 780x450x345mm (HxWxD) which means it can fit within a standard wall-mounted kitchen cupboard.