How Electric Heating Affects Your EPC Rating in London

Electric heating is common in London flats, apartments and homes without a mains gas connection. However, many homeowners and landlords wonder how electric heating affects an Energy Performance Certificate (EPC) rating.

The answer depends on the type of heating system, insulation, heating controls and other features of the property. Electric heating does not automatically result in a poor EPC rating. Equally, replacing an old heater does not guarantee a better result.

Understanding these factors can help you prepare for an EPC assessment and identify suitable improvements before selling or renting your property.

Does Electric Heating Affect an EPC Rating?

Yes, the heating system can influence an EPC assessment. An assessor considers the installed equipment, fuel type, controls and other characteristics of the building when calculating its energy performance.

However, heating is only one part of the assessment. Wall insulation, roof insulation, windows, hot water systems and other building features can also affect the final result.

For example, a well-insulated flat with suitable heating controls may perform differently from a poorly insulated property with older electric heaters.

The assessment uses an approved methodology rather than simply measuring your electricity bills. The resulting certificate provides an energy-efficiency rating and recommendations for potential improvements.

If you want to understand the different rating bands, read our guide to EPC ratings explained in London.

Which Types of Electric Heating Are Common in London Homes?

Different electric heating systems work in different ways. Understanding your existing equipment can help you prepare for an assessment.

1. Direct Electric Panel Heaters

Panel heaters use electricity to produce heat and warm individual rooms. They are often found in flats and properties without gas central heating.

Their effect on an EPC rating depends on the equipment and the other characteristics of the building. Older heaters may also have limited heating controls.

Before arranging an assessment, identify the heaters installed in your property and check whether thermostats or timers are available.

2. Electric Storage Heaters

Storage heaters typically store heat for later release. Older models may have basic controls, while newer systems can offer more flexible programming.

The type of equipment can influence the EPC assessment. Keep any available product specifications or installation records, particularly if the heaters have been replaced.

There is no need to assume that every storage heater must be replaced. First, review your existing EPC and its recommendations.

3. Electric Underfloor Heating

Electric underfloor heating is sometimes installed in bathrooms, kitchens and renovated properties.

Its presence alone does not determine the EPC rating. The assessor considers the relevant characteristics of the heating system and the building.

If the system was installed during a renovation, retain any available installation documents.

4. Air Source Heat Pumps

An air source heat pump uses electricity to transfer heat from outdoor air into a property. Unlike conventional electric resistance heating, it can deliver more heat energy than the electrical energy it consumes under suitable conditions.

A heat pump may be worth considering when planning a heating upgrade. However, installation costs, property suitability, insulation and the existing heating distribution system all need consideration.

Review your EPC recommendations before investing in a replacement system. Seek suitable technical advice rather than assuming a particular upgrade will guarantee a higher rating.

What Do EPC Assessors Check in Electrically Heated Properties?

An EPC assessment considers several physical features of a property, including heating equipment, insulation, hot water systems and windows.

Windows and Conservatories

Windows and conservatories can influence how a property is assessed. The conservatory’s construction, glazing, heating arrangements and separation from the main house may all be relevant.

If your home has an attached conservatory, read our guide to EPCs for properties with conservatories in London to understand what owners should check before an assessment.

Insulation and Building Construction

Insulation can influence how much heat a property loses. The assessor considers the construction and insulation characteristics of the building under the applicable assessment methodology.

For older London homes, some construction details may not be visible during a standard inspection. Supporting evidence can be useful when it helps establish details of an improvement.

Converted flats may have different construction features from purpose-built apartments. If your property has been divided into separate dwellings, our guide to EPC assessments for converted flats in London explains relevant considerations for owners and landlords.

Heating Controls and Hot Water

The assessor records relevant details about the heating system, its controls and the hot water arrangements.

Check that the equipment is accessible and that you can explain how it operates. If you have manuals or installation records, keep them available.

For an official explanation of the assessment process, consult the GOV.UK Energy Performance Certificate guidance.

Electric Heating in London Flats With Communal Heating

Some London flats use communal heating systems rather than individual electric heaters. In these buildings, heating may be supplied through a shared system serving multiple apartments.

The EPC assessment depends on the property’s heating arrangement and the information available about the system. If you own a flat with shared heating, it is useful to understand how the system operates and what information may be needed during an assessment.

Read our guide to EPCs for flats with communal heating in London for more information about these properties and their energy assessments.

Does Electric Heating Affect EPC Requirements for Landlords?

Landlords should consider both energy performance and the rules that apply to their property’s intended use.

If you rent out a property with several occupants, our guide to EPC requirements for HMO properties in London explains important considerations for landlords managing houses in multiple occupation.

Owners offering short-term accommodation should also check the rules that apply to their circumstances. Our article on EPCs for holiday lets in London explains relevant considerations for holiday accommodation.

Neither property type should be treated as automatically exempt from EPC requirements. Check the current rules and any applicable exemptions before marketing or letting your property.

For official guidance, visit GOV.UK’s Energy Performance Certificate information.

How Can You Improve the EPC Rating of an Electrically Heated Property?

The best approach is to identify the property’s weaknesses before spending money on upgrades. Your current EPC report provides a useful starting point because it includes recommendations relevant to the assessed property.

1. Review Your Existing EPC

Start by checking your current rating and the recommendations for improvement.

If you do not have a copy, use the official GOV.UK energy certificate search to look for an existing certificate.

For more guidance, read our article about getting a new EPC after home improvements.

2. Investigate Insulation Improvements

Insulation may be worth investigating if your property loses heat through its roof, walls or other building elements.

The appropriate measure depends on the building’s construction. For example, a top-floor flat may have different insulation considerations from a flat in the middle of a block.

Check the recommendations in your EPC before choosing an improvement. In some properties, insulation may be a more relevant priority than replacing an otherwise suitable heating system.

3. Check Your Heating Controls

Review the controls fitted to your existing heaters. Older systems may lack the flexibility available with newer equipment.

Suitable controls can help you manage room temperatures and heating schedules. Their effect on an EPC depends on the system and the applicable assessment methodology.

4. Consider a Heating System Upgrade

If your existing heaters are old or unsuitable, investigate replacement options before committing to the work.

Compare installation costs, running costs, property suitability and the recommendations in your EPC. A heat pump, for instance, may require additional work to improve insulation or adapt the heating distribution system.

Avoid making expensive changes based on assumptions about your rating. Obtain appropriate technical advice before selecting a new system.

5. Keep Evidence of Completed Work

Maintain records of insulation installations, heating replacements and other relevant upgrades.

Supporting documents may help the assessor establish details that cannot be confirmed through visual inspection alone. The assessor will determine what evidence can be accepted under the applicable methodology.

For further practical suggestions, see our guide on how to improve your EPC rating in London.

Electric Heating, Lease Plans and London Flats

London flats can present particular challenges because owners may have limited control over the building’s external walls, roof or communal heating infrastructure.

If you own a leasehold flat, check which improvements you can carry out independently and whether proposed work requires permission from the freeholder or managing agent.

Property documentation is also important when selling or purchasing a flat. If the building contains residential units alongside commercial premises, the relevant lease documents may need careful review.

Our guide to lease plans for mixed-use buildings explains how lease plans identify the premises covered by a lease and distinguish them from shared areas.

If you need to check the dimensions or scale of a lease plan, our guide to lease plan scale and measurements explains why these details matter when identifying the extent of a property.

You can also read our article on how to check a lease plan before buying a flat for additional guidance on reviewing property documentation.

Remember that a lease plan and an EPC serve different purposes. Both can be relevant to property transactions, but neither replaces the other.

Should You Get a New EPC After Replacing Electric Heaters?

Replacing electric heaters does not automatically mean you must obtain a new EPC immediately. Whether a new certificate is worthwhile depends on your circumstances and whether the existing certificate remains suitable for your plans.

An EPC is generally valid for 10 years. However, a newer assessment may be useful after significant improvements, particularly when you are preparing to sell or rent the property.

Before booking, check how long an EPC is valid in London and confirm whether your existing certificate remains valid.

You should also review the current requirements that apply to your property before marketing it.

What Documents Should You Prepare Before an EPC Assessment?

A little preparation can make the assessment process more straightforward.

Before the appointment, gather any available:

• Heating system manuals and specifications.

• Records of electric heater or heat pump installations.

• Receipts for insulation improvements.

• Window replacement documentation.

• Hot water cylinder specifications.

• Previous EPC reports and recommendation reports.

You do not need every document listed above. The assessor will inspect the property and determine which information can be used.

If you are preparing a property for sale or letting, our EPC checklist before marketing a property in London offers additional preparation guidance.

Book an EPC Assessment in London

If your London property uses electric heating, an EPC assessment can help establish its current energy-efficiency rating and identify potential improvements.

EPC Rate London provides domestic EPC assessment services for homeowners, landlords and property professionals.

You can explore our EPC assessment services to understand the options available. For current prices, visit our EPC pricing page.

If you need to arrange an assessment, use our online EPC booking page or contact the team to discuss your property and appointment requirements.

Frequently Asked Questions

Does electric heating automatically give a property a low EPC rating?

No. Electric heating does not automatically result in a low rating. The assessment considers the heating system alongside insulation, construction, hot water and other relevant features.

Can replacing electric heaters improve an EPC rating?

A replacement may help in some circumstances, but the result depends on the equipment and the property’s overall characteristics. Check the existing EPC recommendations before investing in new heaters.

Does an electric heater in a conservatory affect an EPC?

Heating arrangements can be relevant to the assessment. The conservatory’s construction, separation from the main house and heating system may all need consideration.

Should I install a heat pump to improve my EPC?

Not necessarily. A heat pump may be suitable for some properties, but installation costs, insulation, space and the existing heating system should be considered first.

Do landlords need an EPC for every type of rental property?

Requirements depend on the property, its use and any applicable exemptions. Landlords should check the relevant rules before marketing or letting a property.

Can I check my EPC rating online?

Yes. You can search for an existing certificate through the official GOV.UK energy certificate service.

Final Thoughts

Electric heating is only one factor in a property’s EPC rating. The type of equipment, heating controls, insulation and other building features all contribute to the assessment.

Before investing in upgrades, review your existing EPC and prioritise improvements that suit your property. Keeping supporting documents can also help when arranging a reassessment.

Whether you own a flat, manage an HMO or prepare a property for holiday letting, understanding your building’s energy performance can help you make more informed decisions.

If you need an EPC for an electrically heated house or flat in London, contact EPC Rate London to discuss arranging an assessment.