Home Energy Assessment — Know Where to Start
Before spending money on improvements, it helps to know where your home loses the most heat and which changes make sense, in which order.
Many homes already have an Energy Performance Certificate (EPC), which rates the home from A to G and lists recommended improvements. A more detailed assessment goes further: it looks at your actual home, how it is built and how you heat it, and can plan improvements so they work together without causing problems such as damp.
- EPC energy efficiency rating
- A–G
- How long an EPC is valid
- 10 years
- To check your existing EPC
- Free
- EPC band many grant schemes look for
- D–G
What Is Assessment?
There are different kinds of assessment. An EPC is a standard rating produced by an accredited assessor. A retrofit assessment, under the PAS 2035 standard used for many funded schemes, looks at the whole house before insulation or heating work is planned. A thermal imaging survey uses an infrared camera to show where heat escapes.
How It Works
Check Your EPC
Look up your address on GOV.UK's Find an energy certificate service, or the Scottish EPC Register.
Book an Assessment
If you need a new EPC or a more detailed look, book an accredited assessor or a retrofit assessor.
Survey
The assessor records the construction, insulation, windows, heating and ventilation. Thermal imaging works best in cold weather with the heating on.
Recommendations
You get a report of recommended improvements. For whole-house plans, the order of work matters.
Is It Right for My Home?
Useful for any homeowner or landlord who is unsure where to start, is planning a renovation, or needs an EPC to sell or let. If you apply for a council-run scheme such as the Warm Homes: Local Grant, the council arranges a home survey as part of the process.
Key Benefits
Find the Biggest Heat Losses
Target the improvements likely to make the most difference in your home.
Plan the Right Order
Insulation, ventilation and heating work best when planned together.
Avoid Unintended Problems
A whole-house view helps avoid issues such as condensation after insulating.
Understand Your EPC
See your current rating and what could improve it — useful when selling or letting.
Ask for a Free Assessment Quote
Typical Costs and Savings
Typical figures to help you compare, not a quote for your home. Your costs and savings depend on the property, how you heat it and how you use energy.
Prices for EPCs, retrofit assessments and thermal imaging surveys vary by provider and home size, so we do not quote a figure. An EPC lasts 10 years, and you can check whether your home already has one for free. Source: GOV.UK — energy performance certificates. Last reviewed September 2026.
Help With the Cost
Funding depends on where you live, your income and your home, and schemes change. We are not a government body — check the official scheme before relying on it.
Warm Homes: Local Grant (England)
If you are eligible and your council has funding, it arranges a home survey to see how your home could be improved.
Read more on our grants guide →Frequently Asked Questions
Your next step
Thinking about Home Energy Assessment?
It is free to ask and there is no obligation.