Gas boiler efficiency levels
The current boiler grant scheme which is seeing thousands of homes across the UK have free replacement boilers installed is in place to raise the levels of boiler efficiency throughout the country. By fitting free condensing boilers the Government hope to lower Carbon emissions nationally through less energy consumption.
The organisation which determines a boiler’s grading is SEDBUK (Season Efficiency of Domestic Boilers in the UK). SEDBUK
Boiler ratings are determined are determined when the boiler and hot water / heating system is installed, although it is possible to have it assessed at any time by a Domestic Energy Assessor.
Boiler performance contributes to the overall energy performance of your property and is included in any Energy Performance Certificate or Report
Boiler performance is measured as a percentage although the European Grading method (A-G according to energy usage performance) is also often included for consistency.
The energy efficiency of gas boilers (the free boilers available in the UK are gas boilers) is assessed on a variety of factors including –
- Seasonal conditions
- Boiler / heating usage patterns
- Housing occupancy at the time of boiler installation
- Boiler storage conditions
- Boiler Location
- Boiler insulation
Other factors deemed to affect the energy efficiency of boilers such as climate and the age of a boiler are also taken into account when assessing a boiler’s performance.
The boiler rating system is designed to be a fair and accurate method of determining boiler efficiency, regardless of manufacturer.
The table below reflects the energy rating and performance rating system used by SEDBUK to measure boiler efficiency.
| SEDBUK Band Boiler Rating
|| Above 90%
|| Boilers in this band function at over 90% efficiency
||86%-90%||Boilers in this band function at 86%-90% efficiency|
||82%-86%||Boilers in this band function at 82%-86% efficiency|
||78%-82%||Boilers in this band function at 78%-82% efficiency|
||74%-78%||Boilers in this band function at 74%-78% efficiency|
||Boilers in this band function at 70%-74% efficiency|
|| Below 70%
||Boilers in this band function at below 70% efficiency|