Boiler Efficiency Ratings


Compare new boilers and assess whether your current boiler would be better off being replaced

Our boiler efficiency tables provided by SEDBUK (the seasonal efficiency of domestic boilers in the UK) provide a guide of how effective your boiler is at turning fuel into heat.

You can check your boilers rating by selecting it’s make and model below. Ratings are based on the SEDBUK Rating which is an indicator of its efficiency when used within an average domestic household, it’s a great benchmark for comparing new boilers and also assessing whether your current boiler would be better off being replaced due to low efficiencies.

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.

VIEWING DETAILS ABOUT

Warmflow

G-Series GS25B Efficiency

SAP seasonal efficiency

86.3%

Rating band

Band B

Specification

ManufacturerWarmflow Boilers
ModelG-Series GS25B
Fuel TypeGas
TypeConventional
MethodCondensing
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)25.51 - 25.51
Boiler ID
Manufactured From/To2007 - current

Summary

The Warmflow G-Series GS25B is a 'B' rated boiler which has good efficiency of 86.3%.

The G-Series GS25B is a Condensing Conventional boiler with a maximum power output of 25.51kw that uses Gas as its fuel source.

As this boiler is 'B' rated it will provide efficient heating and subseqently reduce fuel bills and carbon dioxide emissions.

SEDBUK Rating

Similar Warmflow Boilers to the G-Series GS25B
(Condensing Gas Conventional)

Results ordered by efficiency. Some models may be obsolete.

Warmflow G-Series GS25A

90.2% Efficient

Most Efficient Conventional Gas Boilers

Baxi Solo 15 HE A

91.3% Efficient

Main 15 HE A

91.3% Efficient

Potterton Promax SL 15

91.3% Efficient

Potterton Gold H 15

91.3% Efficient