What is a building energy rating (BER)?Can my home connect to gas?
A Building Energy Rating (BER) is a valuation that measures the energy efficiency of residential and commercial buildings in Ireland. The majority of homes in Ireland fall within a C category.
The better the Building Energy Rating, the lower your energy bills, the less carbon (CO2) emitted and the greater potential value of the property. A difference of just a few grades on a BER can have an impact on a home's heating bill and the amount of carbon (CO2) emitted.
If buying or selling a home or trying to reduce costs and improve your sustainability, the BER is a good indicator of how much improvement is needed. A BER certificate is compulsory for all homes available for rent or sale. Find out more about when BER certificates are needed or check the SEAI National BER Register for an existing certificate.
How is a Building Energy Rating calculated?
A BER is calculated by a Building Energy Rating assessor following a review of your home. The SEAI National Register of BER Assessors can be accessed here.
The assessor will examine the insulation level and type in each area of your home. They will check the age and condition of your boiler and look at other factors like the size, type and condition of your windows and doors.
The assessor will also check the roof and floor dimensions and examine the ventilation and air flow of your home to determine the final grade. Any energy efficiency improvements or technology like solar panels, battery storage units or storage heaters will also be taken into account.
Knowing where your home needs to be improved is a huge start in improving your BER and making it more energy efficient.
What can impact the Building Energy Rating?
Approximately 35% of heat lost from the average home escapes through the outer walls with up to 30% leaving through the roof. It is often recommended to examine the suitability of your attic and wall insulation and checking for gaps or cracks is the first step in reducing that heat loss for your home.
Other areas of the house that can lead to potential heat loss are doors and windows. Unsealed outer doors, any poorly fitted frames or single-paned windows could result in a loss of up to 25% of your home’s heat.
Another negative impact of poorly performing windows or doors (and the draughts that can comes with them) will be the reduction in effectiveness of any investment you may make in improved attic and wall insulation.
How to improve the Building Energy Rating of my home?
You can take certain measures to improve your BER and in turn reduce your annual energy bill and lower the carbon emissions of your home. Implementing a number of changes can have a significant improvement on the energy performance and result in a warmer, cosier home with an improved BER rating. Research has shown that a warmer home also beneﬁts overall health and wellbeing. Since your home will be much more energy eﬃcient, your heating bills should also be lower.
It is recommended that you have a BER Assessor complete an assessment of your home to identify what areas should be prioritised. Download the SEAI Homeowners checklist to prepare.
Switching from oil to natural gas
While many Irish homes have already made the switch from oil to natural gas, there are over 200,000 homes in Ireland within 15 metres of the national gas network that are not connected to natural gas.
Switching from oil to natural gas will allow you to save on your energy bills, enjoy more convenient and flexible heating, and make your home more environmentally friendly at the same time. Learn more about the switching process and how you can improve the energy efficiency of your home.Learn more
A cleaner energy future with Gas Networks Ireland
Ireland’s gas network is a vital national asset that generates 30% of primary energy, 40% of our heating and 50% of our electricity. Today, more than 680,000 Irish homes rely on the gas network to provide safe, reliable, flexible and affordable energy to meet their heating, cooking and power needs. By gradually replacing natural gas with renewable, carbon neutral and ultimately zero carbon gases, such as biomethane and hydrogen, these same homes and more will be powered by increasingly cleaner energy.
Biomethane, which began flowing on the network in 2019, is the first step to a cleaner energy future. Produced from agricultural and food waste, this renewable gas is structurally identical to natural gas and can be used in exactly the same way through the existing infrastructure, boilers and appliances, meaning homeowners will transition to this sustainable energy source and play their part in progressing Ireland towards a cleaner energy future, without changing a thing.Read the BER case study