What is an EPC? Everything you need to know
If you’re buying, selling, or renting a home, you may have come across the term EPC - but what exactly is it, and why does it matter? Energy Performance Certificates (EPCs) are a vital part of homeownership today, especially as the UK transitions towards greener heating solutions.
Whether you’re a homeowner, landlord, or tenant, understanding EPCs can help you stay compliant with regulations and improve the energy efficiency of your home. In this guide, we’ll break down everything you need to know, from how to get one to what it means if you’re exempt.
What is an Energy Performance Certificate?
An Energy Performance Certificate (EPC) is an official document that rates the energy efficiency of a property on a scale from A (most efficient) to G (least efficient). It’s based on the building’s structure, insulation, heating system, and energy usage.
The certificate also includes recommendations on how to improve your rating, such as upgrading to a more efficient heating system or adding insulation. These improvements aren’t just good for the environment, but they can also lower your energy bills over time.
Viessmann offers a range of energy-efficient solutions, including the Vitodens range of gas condensing boilers and heat pumps like the Vitocal 150-A, both of which can help boost your EPC rating.
What is the EPC register?
The EPC register is an online database that holds all valid Energy Performance Certificates in England, Wales, and Northern Ireland. You can search the register to view or download the EPC for any property. This can be useful if you’re buying or renting a home.
For landlords and sellers, the EPC must be available to potential buyers or tenants from the outset. You can also use the register to find an accredited domestic energy assessor if your property needs a new certificate.
How can you get an EPC?
To obtain an EPC, you need to hire a qualified Domestic Energy Assessor. The assessor will visit your property, examine various elements such as the heating system, windows, loft insulation, and more, and then produce your certificate.
If you’re making improvements, like installing a new boiler, switching to a heat pump, or even adding solar PV, it’s best to do these before your EPC assessment to get a better rating.
How much does an EPC cost?
The cost of an EPC typically ranges between £60 and £120, depending on the size and location of your property. It is a one-time fee and the certificate is valid for 10 years.
Although it’s not free, improving your EPC rating can save you more in the long run through lower heating and electricity bills. Some improvements might also be subsidised through schemes like the Boiler Upgrade Scheme or support for free loft insulation.
Do I need an EPC?
In most cases, yes. An EPC is legally required if you are:
Selling a property
Renting out a property
Constructing a new build.
For landlords, failing to provide an up-to-date EPC can result in fines. Homes in England and Wales that are let to tenants must also currently have a minimum EPC rating of E. However, government plans are under way to raise this standard to C in the coming years - so now is the perfect time to future-proof your property.
If your home currently has a lower rating, switching to a modern gas condensing boiler or installing a renewable heating system could make a big difference.
What does EPC exempt mean?
Some types of buildings are exempt from the requirement to have an EPC. While these exemptions are relatively few, they’re important to be aware of, especially if you’re dealing with non-standard or unusual properties.
Places of worship
Churches, mosques, synagogues, and other religious buildings used primarily for worship are exempt from needing an EPC. These spaces often have irregular usage patterns and unique architecture, which makes traditional energy assessments less practical or relevant.
Temporary buildings
Structures intended for use over a period of less than two years, such as site offices, pop-up retail units, or temporary classrooms, do not require an EPC. Since they’re not designed for long-term use, their energy performance is not subject to regulation.
Standalone buildings under 50 square metres
If a detached building has a total usable floor area of less than 50 square metres and is not intended for regular human occupancy (like a small shed or storage unit), it’s exempt from EPC rules.
Buildings due to be demolished
Properties scheduled for demolition do not need an EPC, provided the owner can show evidence of the planned demolition, such as planning permission or a demolition order.
Listed buildings
While many listed buildings are technically exempt, this is a grey area. If energy performance improvements would unacceptably alter the building’s character or appearance, it may not be required. However, always check with your local authority before assuming an exemption.
Even if your property is exempt, improving energy efficiency can still be beneficial. You don’t need an EPC to start saving money or reducing your carbon footprint.
Understanding EPCs isn’t just about ticking boxes - it’s a gateway to better home performance, lower energy bills, and future compliance. If your property needs a boost in energy efficiency, explore Viessmann’s innovative heating solutions today.
Whether you’re upgrading your boiler, considering a heat pump, or researching solar panels, Viessmann can help you make the right choice for a warmer, greener home.
