Underfloor Heating in Ireland — Cost, Floor Build-up, and the Heat Pump Pairing
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Underfloor heating: €60–€100/m² installed. Best paired with a heat pump. Standard on the ground floor of a 2026 self-build.
Underfloor heating (UFH) in Ireland: €60–€100/m² installed for the pipework, manifold, and controls. Standard on the ground floor of a 2026 self-build. Best paired with a heat pump (low flow temperature 35°C, which is what a heat pump produces most efficiently). Can be used with radiators but is less efficient (radiators need 50–60°C flow, which is at the limit of a heat pump's efficiency). On the ground floor: pipework in the screed above the insulation. On the upper floor: pipework in the floor build-up (low-profile 25–50 mm systems, retrofittable). Total floor build-up: 50–75 mm. UFH is slower to respond than radiators (1–2 hours vs 15 minutes), so use a smart thermostat to schedule the heat.
When this matters most
You're at design stage and need to specify the heating distribution.
When this doesn't apply
The heating is commissioned.
Sources
SEAI, Heat Pump and UFH guidance. https://www.seai.ie/
Frequently asked questions
How much does underfloor heating cost in Ireland?
€60–€100/m² installed. For a 100 m² ground floor: €6,000–€10,000. Plus the screed: €20–€30/m².
Is underfloor heating better than radiators?
Depends on the heat source. With a heat pump, UFH is much more efficient (35°C flow vs 50–60°C for radiators). With oil or gas, UFH is slightly less efficient but more comfortable.
Can I retrofit underfloor heating upstairs?
Yes, with a low-profile system (25–50 mm total build-up). Pipework in the floor, not in the joists. Most retrofittable systems are 25–40 mm thick. €80–€150/m² installed.
When this matters most
You're at design stage and need to specify the heating distribution.
When this doesn't apply
The heating is commissioned.
Where to go next
Next decision
The next step in your build sequence.
Branch into
Adjacent decisions at the same stage.
- Battery Storage in Ireland 2026 — Cost, Payback, and When to Skip It →
- Biomass Boiler in Ireland — Wood Pellet Stove, Cost, SEAI Grant, and When It Beats a Heat Pump →
- District Heating in Ireland — Where It Exists, the Connection Cost, and When It Works →
- Ground Source Heat Pump in Ireland — Borehole Cost, When It's Worth the Premium →
- Solar Thermal in Ireland — Hot Water from the Sun, When It Pays Back, and the Alternatives →
Watch out for
Common mistakes, hidden costs, gotchas.
- Battery Storage in Ireland 2026 — Cost, Payback, and When to Skip It →
- Biomass Boiler in Ireland — Wood Pellet Stove, Cost, SEAI Grant, and When It Beats a Heat Pump →
- District Heating in Ireland — Where It Exists, the Connection Cost, and When It Works →
- Ground Source Heat Pump in Ireland — Borehole Cost, When It's Worth the Premium →
- SEAI Heat Pump Grant 2026 — €6,500 + €3,500 Bonus, Eligibility, and the BER Trap →
- Heat Pump in Ireland 2026 — Air-to-Water Cost, SEAI Grant, and the 6 vs 9 kW Question →
- MVHR in Ireland — Mechanical Ventilation with Heat Recovery, Cost, and Why You Need It →
- Radiators vs Underfloor Heating in Ireland — Cost, Comfort, and Heat Pump Pairing →
- Solar PV in Ireland 2026 — 6 kWp Cost, Payback, and the SEAI Grant →
Compare with
Alternative approaches worth knowing.