RetrofitReady is a free information service. We are not affiliated with SEAI or any government body. Grant figures are indicative only and may change without notice. Always verify current rates and eligibility at seai.ie before signing any contract or starting any work. We do not endorse or guarantee any contractor listed on this site.

Heat Pump vs Gas Boiler

Compare annual heating costs, savings and carbon reduction for a heat pump vs your current system.

Current heating system

Insulation level

Home size (m²)

Annual cost comparison

Gas boiler

3173 kg CO₂/yr

€1,478

Heat pump

1295 kg CO₂/yr

€1,750

Annual saving

€0/yr

CO₂ reduction

1,878 kg/yr

When are you thinking of doing this?

We'll only match you to contractors when you're ready.

Next steps

Check your home →Full assessment with grant breakdown Heat pump grant guide →Everything about the SEAI heat pump grant Find heat pump installers →SEAI-registered contractors near you Retrofit ROI calculator →See payback periods for all upgrades

Official SEAI Resource — always verify grant details directly with SEAI before applying.

Last verified: 2026-06-01