Is My Home Suitable for a Heat Pump?
Insulation, BER and radiators decide whether a heat pump will keep your home warm. Here is how to tell, and what the free survey checks.
Grant figures confirmed against SEAI
Whether Your Home Is Suitable for a Heat Pump Comes Down to How Well It Holds Heat
Whether your home is suitable for a heat pump comes down to one thing, how well it holds heat. A heat pump delivers warmth at a lower temperature than a boiler, so it works best in a home that does not lose that warmth quickly. Most Irish homes get there, some as they are and some after a fabric upgrade.
Insulation comes first
Insulation is the single biggest factor in heat pump suitability. Attic insulation, wall insulation and reasonable airtightness let a heat pump keep the home warm at a low flow temperature, which is exactly where it runs most efficiently. Homes built after 2000 usually have enough already, while older homes often upgrade insulation first. For SEAI-registered insulation contractors, wallinsulationireland.ie lists verified contractors across all 26 counties.
What Decides Heat Pump Suitability in an Irish Home
Beyond insulation, three things decide whether a heat pump will run efficiently and keep your home warm at a low flow temperature.
What your BER rating tells you
A BER of C or better is a good sign a heat pump will run efficiently as it is. There is no hard cut-off, so a lower BER does not rule a heat pump out, it flags that insulation and airtightness are worth improving first to keep running costs down.
Radiators and heat emitters
A heat pump runs cooler than a boiler, so radiators need to be big enough to give out the same heat at that lower temperature. In many homes most are fine and only a few need upsizing. Underfloor heating is ideal but not required.
Hot water and the cylinder
A heat pump heats domestic hot water through a cylinder. Homes without one, or with an older direct cylinder, usually need a new hot water cylinder sized to the household. The survey confirms what your home needs.
The Free Home Survey Confirms Whether Your Home Is Heat Pump Ready
The reliable answer to whether your home is suitable for a heat pump comes from a survey. An SEAI-registered installer assesses insulation, radiators and hot water needs, confirms the home is heat pump ready, and sizes the system correctly.
It costs nothing and it is the step that turns a guess into a plan. Most homes built and lived in before 2021 also qualify for the SEAI heat pump grant of up to €12,500 (as of July 2026), which the installer confirms during the same visit.
Find an installer near youHeat Pump Suitability, Answered
Is my home suitable for a heat pump?
Most homes built after 2000 with reasonable insulation are suitable. Older homes can work too, often after an insulation upgrade. A BER of C or better is a good sign, and a free home survey confirms it either way.
What BER do I need for a heat pump?
There is no hard cut-off, but a BER of C or better means a heat pump will run efficiently as-is. A lower BER does not rule a heat pump out, it just means insulation and airtightness are worth improving first.
Do I need to change my radiators?
Sometimes. A heat pump runs at a lower flow temperature than a boiler, so undersized radiators may need upsizing or a couple replaced. Underfloor heating is ideal but not required. The survey identifies which emitters need attention.
Can an old house have a heat pump?
Yes, once the fabric is reasonable. Many older Irish homes install a heat pump after upgrading attic and wall insulation. The key is reducing heat loss so the heat pump can keep the home warm at a low flow temperature.
How do I find out if my home qualifies?
An SEAI-registered installer carries out a free home survey. They assess insulation, radiators and hot water needs, confirm suitability, and size the system. Every installer listed here is SEAI-registered.
Does insulation have to be done first?
Not always, but good insulation is what lets a heat pump run cheaply. Many Irish homes upgrade attic and wall insulation before or alongside the heat pump so the system is sized smaller and running costs stay low.
More on Heat Pumps and SEAI Grants
SEAI heat pump grant explained How the grant of up to €12,500 (as of July 2026) works and how to apply. Read guide
Heat pump cost in Ireland What air source and ground source systems cost, before and after grants. Read guide
Air source vs ground source The two heat pump types compared on cost and efficiency. Read guide
Heat pump installers in Ireland SEAI-registered installers covering all 26 counties. Read guide
Have an Installer Confirm Your Home Is Suitable for a Heat Pump
A free survey is the surest way to know your home is suitable for a heat pump. Every installer here is SEAI-registered and grant-eligible for the heat pump grant of up to €12,500 (as of July 2026).