Gas vs Electric Heating Costs in Ireland (2024/2025 Guide)

Heating is one of the biggest household costs in Ireland, and choosing between gas, electric, oil or a heat pump can significantly affect your annual bills. Here's a realistic comparison for 2024/2025, plus how to access SEAI grants if you're upgrading.

How much does gas heating cost in an Irish home?

For a typical three-bedroom semi-detached house connected to the gas network (common across Dublin, Cork and other cities), annual gas heating and hot water costs generally run around €1,400-€2,200 a year as of 2024/2025, depending on the home's insulation standard, thermostat habits, and which supplier and plan you're on. Gas remains one of the more affordable heating options where the property is already connected to the gas network, though standing charges and unit rates have both risen in recent years, so it's worth comparing suppliers annually rather than staying on a default tariff.

How much does electric heating cost?

Homes relying on standard electric heating (storage heaters, electric radiators, or immersion-based hot water) typically face higher annual bills, often in the region of €1,800-€3,000 a year for a similar three-bedroom home, since electricity is generally more expensive per unit of heat delivered than gas when using older, resistive electric heating systems. Storage heaters that take advantage of cheaper night-rate electricity tariffs can reduce this somewhat, but electric heating in older, poorly insulated homes is often the most expensive option of all, which is why many electrically-heated older properties are prime candidates for retrofit and heat pump upgrades.

What about oil heating?

Oil remains common in rural areas and older housing stock outside the gas network, particularly in parts of Munster, Connacht and rural Leinster. Costs fluctuate significantly with international oil prices, but many households budget somewhere between gas and higher-end electric costs, with the added complexity of needing to pre-purchase tank fills rather than paying a smooth monthly bill, which can create cash-flow challenges around each top-up.

Are heat pumps worth it, and what grants are available?

A heat pump extracts heat from outside air (or the ground) and is significantly more efficient than gas, oil or electric resistance heating, typically cutting a well-insulated home's heating running costs substantially compared to oil or standard electric heating. However, heat pumps work best in homes with good insulation and are less effective (and less economical) in older, draughty properties without an insulation upgrade first.

The Sustainable Energy Authority of Ireland (SEAI) offers grants toward heat pump installation, and this support was significantly increased in 2026: the maximum combined grant (covering the heat pump itself, radiator/pipework upgrades, and a renewable heating bonus) can now reach up to €12,500 for the most common heat pump types (air-to-water and ground source) in a typical house, or up to €7,500 for air-to-air systems. For many typical three-bed semis, this can cover a large majority of installation costs, leaving homeowners with a net cost broadly comparable to fitting a new oil boiler. A reduced 9% VAT rate on heat pumps (down from the standard 23%) also took effect from January 2025, further lowering the upfront cost. Check current grant amounts and eligibility at seai.ie, since figures are reviewed periodically.

How can you reduce your heating bill regardless of system?

Whatever your heating type, a few practical steps make a measurable difference: get a Building Energy Rating (BER) assessment to identify where your home is losing heat, top up attic insulation (often one of the cheapest, highest-impact upgrades), use a smart or zoned thermostat to avoid heating empty rooms, and compare energy suppliers annually via the Commission for Regulation of Utilities' approved comparison sites, since switching supplier can save a meaningful amount with minimal effort. SEAI also offers grants for attic and wall insulation separately from the heat pump grant, which can be a lower-cost first step for homes not yet ready for a full heat pump upgrade.

Frequently Asked Questions