A better BER means lower bills, a more comfortable home, and a stronger position when you sell or rent. The good news: the upgrades that improve your rating are the same ones that save you money. Here’s how to move up the scale.
Short answer
Improve your BER by cutting heat loss first (insulation), then upgrading heating and controls, then adding a heat pump and solar PV. Most steps are part-funded by SEAI grants.
The upgrades that move the needle
In roughly the order that gives the best return:
- Attic insulation — cheapest, fastest gain. See attic insulation.
- Wall insulation — cavity if you have it, otherwise internal or external. See wall insulation.
- Heating controls — zoning, timers and thermostats.
- Heat pump — a big rating jump in a well-insulated home. See heat pumps.
- Solar PV — on-site generation lifts the rating and cuts bills. See solar panels.
- Windows and doors — worthwhile when old and draughty.
Do it in the right order
The sequence matters. Insulate before you heat: a heat pump in a leaky home won’t deliver the rating jump or the running-cost savings. If you’d rather do everything at once and target at least a B, look at the SEAI One Stop Shop — see One Stop Shop vs individual grants.
Get a BER first to see where you stand
Before spending, get a BER assessment. It shows exactly where your home loses energy so you can spend the grant money where it counts, and gives you a baseline to measure the improvement against.
Tip
After the works, get a new BER so your improved rating is on record — it’s what buyers, renters and future grant applications will look at.
Note
This is general information, not financial or legal advice. Confirm current grant rules and BER requirements with SEAI before acting.