Irish homeowners are quietly cutting hundreds of euro off their heating bills by replacing one thing most people never think about.

Key Points:

  • Replacing an old, inefficient boiler could cut your gas bills by up to €524 a year1
  • Older boilers waste up to 18% of the energy they burn. Modern A-rated boilers run at up to 94% efficiency2
  • Most new boilers are fitted in a single day, with a 10-year warranty backed by Bord Gáis Energy3
  • Homeowners can currently claim €250 off through the Bord Gáis Energy boiler scrappage offer, closing 30 June 20263

Most Irish homeowners assume that as long as the radiators still warm up, the boiler is doing its job. That one assumption could be quietly draining hundreds of euro from your account every winter.

Here is what few people realise: a boiler does not have to break down to start costing you money. It only has to get old. Gas boilers installed before 2002 run at around 76% efficiency on average, which means that for roughly every €10 you spend on gas, close to €2.50 vanishes as wasted heat.2

With energy prices still high across Ireland, that waste adds up fast. A modern A-rated condensing boiler uses far less fuel to produce the same heat, which is why homeowners who upgrade can save up to €524 a year on their gas bills.1

And the cost of upgrading has become far more competitive. A new boiler can now be supplied, installed and backed by a 10-year Bord Gáis Energy warranty, often in a single day.1

Select your Eircode to explore your boiler upgrade options
(It only takes a minute)

Modern Boilers: The Smarter Way to Heat an Irish Home

Heating is one of the biggest slices of any Irish household energy bill, which is why boiler efficiency has become the simplest place to cut costs without changing how you live.

Boilers are rated from A to G. A G-rated boiler is less than 70% efficient, so more than 30% of the fuel it burns is wasted. A modern A-rated boiler reaches up to 94% efficiency, putting far more of every euro you spend straight into heat for your home.2

The Sustainable Energy Authority of Ireland’s own assessment data shows that upgrading an old, inefficient boiler is one of the most effective ways to reduce energy waste in the home.2

Massive Benefits Of Upgrading Your Boiler in 2026

  1. Lower gas bills. A modern A-rated boiler uses less fuel to heat your home, saving you up to €524 a year compared with an older, inefficient model.1
  2. Fewer breakdowns. Boilers have a working life of around 10 to 15 years. The older yours gets, the more likely you are to face a cold-weather breakdown and rising repair bills.1
  3. Consistent heat and hot water. A new boiler holds temperature more reliably, so no more lukewarm radiators or waiting for the water to run hot.
  4. A better BER rating. Installing an efficient boiler can improve your home’s BER, which matters if you plan to sell or rent in the years ahead.1
  5. 10 years of peace of mind. Every install comes with a 10-year warranty backed by Bord Gáis Energy covering parts and labour, plus your first annual service free.1,3
Select your County to explore your boiler upgrade options
(It only takes a minute)

Act Now: €250 Off Ends 30 June 2026

Bord Gáis Energy is currently running a boiler scrappage offer, giving homeowners €250 off the cost of a new, more efficient boiler. Only a limited number of these discounts are available, and the offer closes on 30 June 2026.3

Scrap your old, energy-wasting boiler, claim your €250 off, and get a 10-year warranty backed by Bord Gáis Energy at no extra cost.3

How can I get a boiler upgrade??

  1. Select your county and answer a few simple questions about your current boiler.
  2. A local RGII-registered engineer contacts you with a fixed, no-obligation quote.4
  3. Choose an installation date that suits you, with most boilers fitted in a single day.1