My Boiler Needs Servicing – Will It Affect My EPC Rating?
Many homeowners ask whether a boiler service will improve their Energy Performance Certificate (EPC) rating.
The simple answer is:
A boiler service is unlikely to improve your EPC rating on its own.
While regular servicing is important for maintaining your heating system, it does not usually change the information used to calculate an EPC rating.
Why Is Boiler Servicing Important?
Regular boiler servicing helps to:
Maintain safe operation
Identify potential faults
Improve reliability
Extend the lifespan of the boiler
Ensure the appliance is operating as efficiently as possible
Manufacturers typically recommend annual servicing to help keep the boiler operating safely and efficiently.
Will a Boiler Service Improve My EPC Rating?
In most cases, no.
A boiler service is unlikely to improve your EPC rating on its own.
An EPC assesses the energy efficiency characteristics of a property, including the type and efficiency of the heating system installed.
While a recently serviced boiler may operate more effectively than one that has been neglected, the EPC methodology does not usually adjust a boiler's efficiency simply because it has been serviced.
As a result, a boiler service alone is unlikely to increase an EPC score or move a property from one EPC band to another.
Why Doesn't a Boiler Service Have a Greater Impact?
The EPC methodology is primarily based on factors such as:
Boiler type
Boiler age
Manufacturer efficiency data
Heating controls
Property insulation
Renewable energy technologies
Construction details
A service helps maintain the performance of the appliance, but it does not normally alter the underlying characteristics used to calculate the EPC rating.
Could a Poorly Maintained Boiler Affect My EPC?
Indirectly, yes.
A poorly maintained boiler may:
Operate less efficiently
Consume more fuel
Be more prone to breakdowns
Cost more to run
However, unless the heating system itself has changed, the EPC rating will generally be based on the recognised efficiency of the appliance rather than its day-to-day operating condition.
What Improvements Are More Likely to Increase an EPC Rating?
If your aim is to improve your property's EPC rating, measures such as the following are often more influential:
Replacing an older boiler with a modern condensing boiler
Installing a heat pump
Adding loft insulation
Installing cavity wall insulation
Upgrading heating controls
Installing solar photovoltaic (PV) panels
Improving hot water systems
These improvements can alter the energy efficiency characteristics recorded during the EPC assessment and may have a greater impact on the final rating.
Check the "Steps You Could Take to Save Energy" Section
Every EPC includes a section titled:
"Steps you could take to save energy"
This provides tailored recommendations for the property and highlights improvements that may help increase energy efficiency and reduce energy costs.
If you are considering upgrading your heating system or improving your EPC rating, this section can provide a useful starting point.
Should I Still Have My Boiler Serviced?
Absolutely.
Although a boiler service is unlikely to improve your EPC rating on its own, regular servicing remains an important part of property maintenance.
A well-maintained boiler is generally:
Safer
More reliable
Less likely to break down
Better able to operate efficiently
Servicing may not significantly affect your EPC score, but it can help ensure your heating system continues to perform as intended.
What If My EPC Recommends a New Boiler?
If your EPC recommends replacing an older or inefficient boiler, this may have a much greater impact on the property's energy performance than servicing the existing appliance.
In many cases, replacing an ageing heating system can contribute more to an EPC rating than routine maintenance alone.
How A1 Home Inspectors Can Help
At A1 Home Inspectors, we are often asked whether servicing a boiler will improve an EPC rating.
While regular servicing is important, a replacement heating system or wider energy efficiency improvements are generally more likely to influence the EPC score.
If you would like advice on your EPC or the recommendations contained within it, we will be happy to help.
Need advice about your EPC rating? Contact A1 Home Inspectors today and speak with one of our assessors.
Disclaimer
The information provided on this page is for general guidance only. A boiler service may improve the operation and efficiency of a heating system, but it does not usually alter the characteristics used to calculate an EPC rating. Individual circumstances may vary.
