Baxi Duo-Tec 28 Gas Combi Boiler ERP

Baxi Duo-Tec 28 Gas Combi Boiler ERP


Popular amongst homeowners and installers alike, the Baxi Duo Tec Natural Gas Combi Boiler  is endorsed by the Energy Saving Trust as a measure of its energy efficiency and comes with a full 7 year warranty included for extra peace of mind. The Baxi Duo Tec has now been updated to meet the ErP directive, meaning your new boiler will be fully compliant with the new regulations.

  • Central Heating Output: 24kW
  • DHW Flowrate: 11.5 litres/min

The Baxi Duo-Tec is A-rated in terms of efficiency with the boilers efficiency perfenctage being over 90%, meaning that at least 90% of the fuel is converted to heat. 

The baxi Duo-Tec Combi Boiler comes with a 7-year manufacturers warranty, which highlights the feliability of the product. Provided the boiler is installed and registered by a Gas Safe installer, your boiler will be protected for parts and labour for 7 years.

The controls of the Duo-Tec are concealed behind the fascia panel, which ensures that everything on the face of the boiler is neat and tidy. Although the boiler has its own built in controls, plug in timers are available from Baxi which can be found on the right hand side of the page.

Please note that this boiler does not come supplied with a flue which will need to be purchased separately. All compatible flues and accessories can be found amongst the related products on the right hand side of the page.


  • A-rated efficiency
  • User friendly controls
  • Compact dimensions
  • Built in frost thermostat, filling loop and pre-plumbing jig
  • Separate temperature control for central heating and domestic hot water
  • 7 Year parts and labour warranty
  • Specs

    Brand Baxi
    Lead Time 2 - 3 working days
    Boiler Type Combi
    Fuel Type Natural Gas
    Heating Output Range 24 - 29
    DHW Flow Rate 11.5
    DHW Flowrate Range < 12
    Flue None
    Programmer None
    Output BTU/H No
    Height (mm) 780
    KW Output 24
    Width (mm) 450
    Depth 345
    Warranty 7 Years
    Manufacturer Part No: 7219414