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How to Improve Your EPC Rating

An Energy Performance Certificate (EPC) is a vital tool that gauges the energy efficiency of a building, whether it’s up for sale or rent. It operates on a spectrum from A, denoting optimal efficiency, to G, indicating the least efficiency. This certificate is not merely a measure of energy efficiency, but it also provides guidance on how to boost a building’s rating via practical, cost-effective energy improvements.

Landlords are legally obligated to provide an EPC, which potential tenants or buyers keenly scrutinise. A low EPC Rating signals potentially higher energy bills, making it an essential factor for consideration by likely occupants.

Moreover, the law will require landlords to have an EPC Rating of at least C by 2025. The absence of a valid EPC can lead to hefty fines of up to £5,000. Landlords must also keep their EPCs up-to-date since these certificates have a ten-year validity to reflect a property’s energy efficiency accurately.

Prospective tenants are increasingly factoring in energy ratings and insulation quality when choosing a rental property, knowing that these aspects can contribute to significant savings on monthly heating and cooling expenses.

For homeowners, strategically investing in energy-efficient solutions can yield an impressive return on investment. A favourable EPC Rating can result in considerable savings on energy bills, making it a financially savvy move.

A high EPC Rating can also boost the market value of a property. With energy efficiency increasingly influencing buying decisions, properties with high EPC ratings tend to fetch better prices. Consequently, enhancing your EPC Rating can be a strategic move if you intend to put your property on the market in the future.

Understanding the EPC Rating

The EPC Rating measures your home’s energy efficiency, ranked on a scale from A (most efficient) to G (least efficient). Calculated by a qualified assessor, this rating is based on several factors, such as the home’s potential for heat or energy loss, insulation level, double glazing, and more. The government’s Standard Assessment Procedure (SAP) is used to score each part of the inspection, and each EPC band corresponds to a specific range of SAP points. The average EPC rating for UK homes is a D, indicating significant room for improvement.

Improve EPC Rating
Improve EPC Rating

Steps to Improve Your EPC Rating

There are several steps homeowners and landlords can take to enhance their Energy Performance and improve their EPC rating. Here are some practical steps to consider:

Invest in Energy-Efficient Lighting

Investing in energy-efficient lighting is one of the most cost-effective ways to boost your Energy Efficiency and EPC rating. Replace old-fashioned incandescent bulbs with more energy-efficient alternatives like halogen bulbs, compact fluorescent lamps, or LED bulbs. LED bulbs, for instance, have a much longer lifespan and lower energy consumption than traditional bulbs, leading to significant long-term savings.

Install Loft Insulation

Installing loft insulation is another highly effective way to boost your EPC rating. This type of insulation is a barrier between your home and the roof, minimising heat loss and reducing energy costs. It can be installed between the rafters of your roof or the loft floor joists, with the former option typically providing excellent heat retention.

Implement Wall Insulation

Similar to loft insulation, wall insulation can have a significant impact on your home’s energy efficiency. Cavity wall insulation is the most common type and is suitable for most UK homes with a gap between the walls. Once installed, you can expect a substantial increase in your home’s energy efficiency, which can reflect positively on your EPC rating.

Insulate Your Hot Water Tank

Consider adding an insulating jacket if your home uses a hot water tank. This relatively inexpensive addition can save you around £35 per year on energy costs. It can also contribute a few points towards improving your EPC rating.

Replace Your Old Boiler

While replacing your boiler is a more significant investment, it can drastically improve your home’s energy efficiency and EPC rating. A newer, more efficient boiler can raise your EPC rating by as much as 40 points.

Upgrade to Double Glazing

Double-glazed windows are an excellent investment for improving your home’s insulation, reducing heating costs, and enhancing your EPC rating. They can add about 10 points to your EPC rating. If your budget allows, consider upgrading to triple glazing for even better insulation and energy efficiency.

Install a Smart Meter

While installing a smart meter doesn’t directly improve your EPC rating, it provides a clearer picture of your energy consumption, helping you identify areas where you could improve. Seeing the impact of your energy-saving efforts in real-time can be highly motivating.

Recommendations for Landlords

As a landlord, improving the EPC Rating of your properties is not just beneficial for the environment and your tenants; it can also make your properties more attractive to prospective renters who are conscious of energy costs. Here are some specific recommendations:

Comply with Minimum Energy Efficiency Standards (MEES)

In the UK, landlords must meet the Minimum Energy Efficiency Standards (MEES). As of April 2020, rental properties must have an EPC Rating of at least an E before being let to new or existing tenants. If your property falls below this standard, you must improve its energy efficiency.

Regularly Update Your Appliances

Older appliances tend to consume more energy than newer ones. Consider upgrading to more energy-efficient models if your property’s appliances are outdated. This could include everything from the refrigerator to the washing machine. Not only will this make your property more appealing to tenants, but it can also contribute to a higher EPC rating.

Monitor Your Properties

Installing smart meters in your properties can provide valuable data on their energy usage, helping you identify and address inefficiencies. This proactive approach can lead to cost savings and environmental benefits in the long run.

Consider Solar Panels

For landlords willing to make a more significant investment, installing solar panels can significantly improve the Energy Performance of a property, leading to a higher EPC Rating. It can also reduce electricity bills* for tenants, making the property more attractive to prospective renters.


Improving your EPC Rating isn’t just about reducing energy bills; it’s about contributing to a sustainable future by enhancing Energy Efficiency. Conducting an Energy Audit is the first step in identifying the most effective ways to boost your Building Rating.

Some measures might require a more substantial investment, but even simple changes can make a significant difference. As a homeowner or landlord, improving the EPC rating of your properties is an investment that pays off in the long run, benefiting both your wallet and the environment.