News, Views & Reviews on Domestic Central Heating, Boiler & Renewable Energy


Get Free, No Obligation Boiler Quotes

Powermax 155 Gas - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can find out the energy efficiency of your boiler by checking its energy rating; you can do this now by selecting the make and model below.

A boiler’s energy rating is an indicator of its efficiency when used within an average domestic household. It's a great benchmark for comparing new boilers and can help you work out how much money you could save on energy bills if you replaced your current boiler with a more efficient model.

For new boiler installations call British Gas Boilers on 0333 230 5216 for a no-obligation quote. Alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Powermax 155 Efficiency

SAP seasonal efficiency80.9%
Rating bandBand D


ManufacturerPowermax Boilers
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)15.5 - 15.5
Boiler ID87AQ147
Manufactured From/To1996 - current


The Powermax 155 is a 'D' rated boiler with an efficiency of 80.9%.

The 155 is a Non-Condensing CPSU boiler with a maximum power output of 15.5kw that uses Gas as its fuel source.

Being a 'D' rated boiler it would be worthwhile replacing it with a higher efficiency 'A' rated boiler.

Similar Powermax Boilers to the 155
(Non-Condensing Gas CPSU)

Results ordered by efficiency. Some models may be obsolete.

Most Efficient CPSU Gas Boilers