Baxi Duo-tec Combi Boiler

The Baxi Duo-tec Combi Boiler is one of Baxi’s newest boiler models. It is available either in mains gas or LPG fuel types, with the latter perfect for customers who are not connected to the mains gas network and are looking for an alternative to oil.

In this review, we have outlined all of the major features of the Baxi Duo-tec Combi Boiler and provided our expert opinion so that you can decide whether it’s right for your home and the needs of your household.

Price (Installed): From £2000 (inc. VAT)

What does this review cover?

Baxi Duo-tec Combi Boiler Technical Specification

Manufacturer Baxi
Model Duo-tec Combi
Condensing Yes
Efficiency Rating 92%
Energy Efficiency Class A Rated
LPG Compatible Yes
Warranty 7-year parts and labour warranty
Central Heating Max. Output 24, 28, 33 and 40 kW
Mounting Wall Mounted
Weight 44.2 kg
Dimensions 780mm (Height) x 450 (Width) x 345 mm (Depth)

The Baxi Duo-tec Combi Boiler is available in the following sizes: 24, 28, 33 and 40 kW, whilst the LPG model is available in 28 kW.

kW Size Flow Rate
24 kW 9.8 l/min 
28 kW 11.5 l/min
33 kW 13.5 l/min
40 kW 16.4 l/min

Baxi Duo-tec Combi Boiler Key Features

  • Holds an ‘A’ energy efficiency rating
  • Over 90% efficient
  • Reasonably compact and of an average weight, which makes it relatively easy to install
  • Can be installed in a large cupboard because of its compact size, or wall-mounted, if preferred 
  • Features an integrated manual control panel, which is straightforward and easy to use
  • Provides instant hot water
  • Heating output of up to 40 kW and flow rate of up to 16.4 per minute

Interested in the Baxi Duo-tec Combi Boiler?

About the Baxi Duo-tec Combi Boiler

  • The Baxi Duo-tec Combi Boiler meets the minimum energy standards and is approved by the Energy Savings Trust
  • Easy to install in a standard cupboard in a kitchen, bathroom or airing cupboard.
  • Can integrate with smart thermostats if preferred
  • Includes a standard 7-year warranty on parts and labour, but to ensure this remains valid, you must have the boiler serviced annually by a Gas Safe Registered heating engineer

Interested in the Baxi Duo-tec Combi Boiler?

Our thoughts on the Baxi Duo-tec Combi Boiler

The Baxi Duo-tec Combi Boiler is a popular choice for homeowners looking for a reliable and energy-efficient boiler. It will provide continuous hot water and simultaneously run heating in a home with up to two bathrooms. 

As a combi boiler, one of the biggest advantages over other boiler types is the fact that it does not need to be installed alongside a tank or cylinder. This means you don’t need additional space available for your heating system.

A name you can trust

Baxi has won several awards for innovation in boiler technology and customer service over the last few years. They have developed a reputation as a reliable and affordable manufacturer of boilers. The company has an excellent rating on Trustpilot, reflecting its commitment to effective customer service.

Energy efficiency

The Baxi Duo-tec Combi Boiler range comes in two fuel types – mains gas and LPG. The 24 and 28 kW models are appropriate for smaller homes with one bathroom. Whilst the 33 kW and 40 kW models are more equipped for homes with higher hot water demands. 

All of the models in the Baxi Duo-tec Combi Boiler range are rated highly for energy efficiency. Plus, this can be increased when used in parallel with the latest smart thermostat technology, including Baxi’s own uSense controls. 

Leading the way to reduce household energy usage

Baxi have made efforts to create environmentally friendly products that prioritise quality and performance. With a 90%+ energy efficiency rating, your home will reduce electricity and gas bills almost immediately and minimise your home’s carbon footprint.

Hot water when you need it

The Duo-tec Combi will provide a minimum of 9.8 litres per minute flow rate of hot water,  meaning you won’t have to wait for the boiler to heat up before taking a shower or bath. This instantaneous heating not only reduces energy waste but also helps to reduce water inefficiency.

Manufactured in the UK

The Baxi Duo-tec Combi and the components that it is made up of are manufactured in the Baxi factories located in Norwich and Preston. 

Wide availability of parts 

As it is manufactured in the UK, parts for the Baxi Duo-tec Combi Boiler are all widely available. If you need a replacement part, these can easily be found at Screwfix, Plumbase and other plumbing merchants both in-store and online.

Interested in the Baxi Duo-tec Combi Boiler?

How Much are the Monthly Repayments for a Baxi Duo-tec Combi Boiler?

Using our boiler finance calculator, you will be able to see the typical monthly repayments for a Baxi Duo-tec Combi Boiler should you choose to take out a finance plan for this boiler.