Potterton Promax 18 System Boiler ErP

Potterton Promax 18 System Boiler ErP


The Potterton Promax 18 System Boiler is an ideal choice for small to medium properties (such as large flats or smaller houses/bungalows) that utilise a hot water cylinder to supply hot water.

  • Central heating Output: 18kw

As an A-rated System Boiler, the Potterton Promax 18 can potentially save you up to several £100's on your annual heating bills if you are upgrading an older, low efficiency boiler. The Promax System Boiler is also fully modulating, meaning it will intelligently adjust to use the correct amount of fuel to meet current demands to save on usage.

Thanks to Potterton's 'Multifit' flue options, the flue can be mounted either horizontally or vertically up to a length of 20 metres. This gives you ultimate flexibility in where you choose to install your boiler as the flue can be routed in anyway to comply with current regulations through the use of extensions and elbows. See the right side of the page for flues and accessories.


  • Fully Modulating
  • Compatible with Multifit GasSaver which can save up to 37% on gas for DHW
  • Flueing options of up to 20m to allow greater flexibility of siting
  • Optional stand off bracket allows pipes to be routed behind the boiler
  • Best in class for NOx rating
  • Fully compliant with the new ErP Regulations
  • Robust hydraulic connections offer quality and reliability
  • 2 Year Warranty
  • Specs

    Brand Potterton
    Lead Time 1 - 2 working days
    Boiler Type System
    Fuel Type Natural Gas
    Heating Output Range < 24
    DHW Flow Rate No
    DHW Flowrate Range No
    Flue None
    Programmer None
    Output BTU/H 60,000
    Height (mm) 750
    KW Output 18
    Width (mm) 450
    Depth 345
    Warranty 2 Years
    Manufacturer Part No: 7219459