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

Boulter

Classic 135/165 Efficiency

SAP seasonal efficiency

84.3%

Rating band

Band C

Specification

ManufacturerBoulter Boilers
ModelClassic 135/165
Fuel TypeOil
TypeConventional
MethodNon-Condensing
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)39.6 - 48.4
Boiler ID0001039949
Manufactured From/To1999 - 2005

Summary

The Boulter Classic 135/165 is a 'C' rated boiler with an efficiency of 84.3%.

The Classic 135/165 is a Non-Condensing Conventional boiler with a maximum power output of 48.4kw that uses Oil as its fuel source.

Although a 'C' rated boiler is not as efficient as many other modern boilers it's still pretty good, only a marginal reduction in fuel bills and carbon dioxide emissions would be observed by replacing it.

SEDBUK Rating

Similar Boulter Boilers to the Classic 135/165
(Non-Condensing Oil Conventional)

Results ordered by efficiency. Some models may be obsolete.

Boulter Bonus 40/65

85.7% Efficient

Boulter Eco-System 12/19

85.7% Efficient

Most Efficient Conventional Oil Boilers

Grant Vortex 36

97.0% Efficient