Energy costs in Ireland remain stubbornly high. According to recent price tracking data, the average annual electricity bill for an Irish household now stands at over €1,800, with unit rates averaging around 36 cent per kWh. Gas prices remain roughly double their pre-2022 levels, and a further carbon tax increase taking effect in May 2026 will add to household heating costs. Ongoing geopolitical instability, including disruption to global oil and gas supply routes, continues to put upward pressure on wholesale energy markets.
For homeowners, these rising costs make one thing increasingly clear: reducing the amount of energy your home wastes is no longer optional. It is one of the most effective financial decisions you can make.
Where your heat is going
The Sustainable Energy Authority of Ireland (SEAI) estimates that around 10% of a home’s heat is lost through windows and doors. In older or poorly insulated properties, that figure can be significantly higher, with some industry estimates placing it as high as 30% in un-retrofitted homes. Draughty frames, single or early double glazing, worn seals, and thermally weak profiles all contribute to heat escaping, forcing your heating system to work harder and longer to maintain a comfortable temperature.
Addressing this heat loss at the source, by upgrading to modern, high-performance glazing, directly reduces the energy your home consumes. That translates into lower bills, greater comfort, and less reliance on volatile energy markets.
How modern windows and doors reduce energy waste
Today’s energy-efficient windows and doors are engineered to minimise heat transfer through the building envelope. Key performance features include triple glazing with low-emissivity coatings, argon or krypton gas-filled cavities, warm-edge spacer bars that reduce heat loss at the glass perimeter, and multi-chambered or thermally broken frames that prevent conduction through the profile itself.
The combined effect is a dramatically lower U-value, meaning less heat passes through the window or door assembly. Fairco’s OMNIA Flush range, for example, achieves U-values as low as 0.75 W/m²K with triple glazing, while Performance uPVC and aluminium systems also deliver strong thermal performance across a range of styles and configurations.
Crucially, the benefit is not limited to the glazing alone. Precision installation with properly compressed seals and airtight detailing ensures that performance is maintained at every junction between the window and the wall. This is where the quality of both product and installer makes a measurable difference.
A long-term investment, not just a short-term fix
Upgrading windows and doors is not a quick fix for one winter. It is a long-term investment that continues to deliver savings year after year. With energy prices unlikely to return to pre-crisis levels, and carbon tax set to rise annually towards €100 per tonne by 2030, the cumulative financial benefit of reduced energy consumption only grows over time.
There is also a direct impact on your home’s Building Energy Rating (BER). Improved glazing and airtightness contribute to a better rating, which in turn supports property value and may improve eligibility for SEAI grant support.
Take control of your energy costs
You cannot control wholesale gas prices or global supply disruptions. But you can control how efficiently your home retains heat. Investing in high-performance windows and doors is one of the most practical steps any homeowner can take to reduce energy waste, lower bills, and future-proof against continued price uncertainty.
Contact Fairco for a free consultation and find out how upgrading your windows and doors can make a real difference to your home’s comfort and running costs.
