BER Rating: What is It And How Can You Improve It?

Farnan Culkin
July 24, 2023

BER Rating - What Is It, And How Can You Improve It

The BER rating is an energy efficiency rating system for buildings. It stands for Building Energy Rating and is a measure of the energy efficiency of a building. Buildings with a higher BER rating are more energy efficient and have lower running costs, while those with a lower BER rating are less energy efficient and have higher running costs. Improving the BER rating of your building involves making changes to its design or structure to reduce the amount of energy it consumes. This can include installing more efficient insulation, replacing old windows and doors, or using renewable energy sources such as solar panels. In this blog, let's dive into the depth of BER rating, What is that and how to improve.

What is a BER Rating?

A Building Energy Rating (BER) is a measure of the energy efficiency of a building. It indicates how much energy a building consumes and how effectively it uses it. The BER rating is represented on a scale from A to G, with A being the most energy efficient and G being the least.

A high BER rating indicates that a building is energy-efficient and environmentally friendly, while a low rating suggests that improvements are needed to enhance its energy performance.

The BER rating considers various factors, such as the insulation levels, heating systems, ventilation, and the overall design of the building. It also considers the energy consumption for heating, cooling, and lighting. The BER rating aims to help homeowners, potential buyers, and tenants make informed decisions about the energy efficiency of a property.

Understanding the components of a BER Rating

To fully comprehend the significance of a BER rating, it is essential to understand its components. The rating is based on three main elements: the energy used for space heating and cooling, the energy used for water heating, and the energy used for lighting. These components are evaluated regarding energy consumption, efficiency, and carbon emissions.

The energy used for space heating and cooling takes into account the insulation levels, the efficiency of the heating and cooling systems, and any renewable energy sources incorporated into the building. The energy used for water heating considers the efficiency of the water heating system and the insulation of the water storage tank. 

Lastly, the energy used for lighting assesses the efficiency of the lighting fixtures and the type of bulbs used.

Factors that Affect the BER Rating

Several factors can influence the BER rating of a building. The level of insulation is crucial, as it determines the heat loss or gains through the walls, roof, and floors. High-quality insulation materials, such as double-glazed windows and insulated doors, can significantly improve the rating. The type of heating system also plays a vital role. Efficient boilers, heat pumps, or solar panels can reduce energy consumption and boost the BER rating.

Ventilation is another critical factor. Proper ventilation improves air quality and reduces the need for excessive heating or cooling. Implementing energy-saving measures, such as installing energy-efficient appliances and lighting, can also positively impact the rating. Additionally, the overall design and layout of the building, including its orientation and the use of natural light, can contribute to a higher BER rating.

How to check your current BER Rating

If you are curious about the energy efficiency of your property, you can easily check your current BER rating. Qualified assessors perform BER assessments and issue certificates. These assessors evaluate your building based on its construction, insulation, heating system, ventilation, and other relevant factors. They calculate the energy performance of the building and assign it a BER rating.

To check your current BER rating, you can contact a registered BER assessor who will visit your property and conduct an assessment. They will provide you with a detailed report that outlines your current rating and highlights areas for improvement. This report is a valuable resource as it allows you to identify specific measures to enhance the energy efficiency of your building.

How to improve your BER Rating

If your current BER rating is not as high as you would like it to be, there are various steps you can take to improve it. Investing in insulation is one of the most effective ways to enhance your rating. Insulating your walls, roof, and floors can significantly reduce heat loss or gain, improving energy efficiency. Upgrading your windows and doors to double or triple glazing can also make a considerable difference.

Another crucial aspect to address is your heating system. Consider replacing an old and inefficient boiler with a more energy-efficient one. Alternatively, you could explore installing a heat pump or a solar water heating system. These renewable energy sources can greatly reduce your energy consumption and carbon emissions.

Additionally, upgrading your lighting to energy-efficient LED bulbs and fixtures can lower your energy usage for lighting. Implementing smart heating controls and programmable thermostats can also help you manage and reduce your energy consumption. Furthermore, renewable energy sources, such as solar panels or wind turbines, can significantly improve your BER rating.

Hiring a professional for a BER assessment

While you can take various steps to improve your BER rating, seeking professional advice in Ireland or wherever you live is often beneficial. Hiring a qualified professional for a BER assessment can provide valuable insights and recommendations tailored to your building. These professionals have the expertise and knowledge to identify areas for improvement and suggest the most effective energy-saving measures.

When choosing a professional for your BER assessment, look for registered assessors accredited by relevant authorities. They should have a thorough understanding of building regulations and energy performance standards. By working with a professional, you can ensure that your BER assessment is accurate and reliable and that the recommendations are practical and feasible.

Benefits of achieving a higher BER Rating

A higher BER rating offers numerous benefits for homeowners, buyers, and tenants. Firstly, an energy-efficient building is more comfortable, maintaining a consistent temperature and better indoor air quality. This can result in improved health and well-being for occupants. Additionally, energy-efficient buildings have lower energy bills, which can lead to significant savings in the long run.

From a financial perspective, a high BER rating can increase the value of your property. Energy-efficient homes are in high demand as they are more environmentally friendly and cost-effective. Buyers and tenants are often willing to pay a premium for a property with a high BER rating. Furthermore, improving your BER rating demonstrates your commitment to sustainability and reducing your carbon footprint.


Understanding and improving your BER rating is essential for enhancing the energy efficiency of your building and reducing your environmental impact. You can significantly improve your rating by considering factors such as insulation, heating systems, ventilation, and lighting. Conducting a BER assessment and implementing energy-saving measures can lead to a higher rating, resulting in increased comfort, cost savings, and a more sustainable home.

If you need professional assistance and advice regarding your BER rating and energy efficiency improvements, call Top-Notch Home Improvement Professionals like Build Pro. We offer planning consultation, architectural design, interior design, home renovation, home extension, and deep retrofit services. With our expertise, you can make informed decisions and achieve optimal energy performance for your building.

Need assisstance?

Contact Build Pro now and Get Free Advice & Quote For Your Home Improvement Project.
Contact BuildPro

Frequently Asked Questions

What does a BER rating mean?

A BER rating indicates the energy efficiency of a building. It ranges from A (most efficient) to G (least efficient).

How is the BER rating calculated?

The BER rating is calculated based on insulation, heating systems, ventilation, and lighting factors.

Can I improve my BER rating?

You can improve your BER rating by investing in insulation, upgrading your heating system, and implementing energy-saving measures.

Do I need a professional for a BER assessment?

While it is not mandatory, hiring a professional for a BER assessment can provide valuable insights and recommendations.

What are the benefits of a higher BER rating?

A higher BER rating offers improved comfort, lower energy bills, increased property value, and a reduced carbon footprint.

How can Build Pro help with my BER rating?

Build Pro offers professional services and expertise in planning consultation, architectural design, interior design, home renovation, home extension, and deep retrofit to help you optimise your BER rating and enhance energy efficiency.

Check - Elements Webflow Library - BRIX Templates

Thank you

Please check your inbox to download your Free EBook!
Oops! Something went wrong while submitting the form.
*FYI, parts of this blog post were drafted by artificial technlogy. But rest assured, it's been thoroughly researched, edited, reviewed and me & my team.
Farnan Culkin

Farnan Culkin is a seasoned expert in the home improvement industry and the proud founder of BuildPro. His passion for home renovation and home extensions has led him to create a platform that educates homeowners, helping them transform their Irish homes into their dream dwellings.