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.



Compact 28 LPG Efficiency

SAP seasonal efficiency


Rating band

Band D


ManufacturerVokera Boilers
ModelCompact 28 LPG
Fuel TypeLPG
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)28.0 - 28.0
Boiler ID
Manufactured From/To2002 - current


The Vokera Compact 28 LPG is a 'D' rated boiler with an efficiency of 81.8%.

The Compact 28 LPG is a Non-Condensing Combi boiler with a maximum power output of 28.0kw that uses LPG as its fuel source.

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


Similar Vokera Boilers to the Compact 28 LPG
(Non-Condensing LPG Combi)

Results ordered by efficiency. Some models may be obsolete.

Vokera Linea 730 LPG

82.2% Efficient

Vokera Linea 726 LPG

82.2% Efficient

Vokera Linea 735 LPG

82.2% Efficient

Vokera Linea Plus AG

82.2% Efficient

Most Efficient Combi LPG Boilers

Keston C 36P Combi

92.8% Efficient