Radiators vs Underfloor Heating in Ireland — Cost, Comfort, and Heat Pump Pairing
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UFH: €60–€100/m². Radiators: €300–€1,000 each. UFH is cheaper per m² but slower to respond. Heat pump loves UFH.
UFH: €60–€100/m² installed. Radiators: €300–€1,000 each depending on size (single panel, double panel, or vertical). UFH is cheaper per m² but slower to respond. UFH + heat pump: best pairing (low flow temperature 35°C, high efficiency). Radiators + heat pump: works but less efficient (high flow temperature 50–60°C). Most Irish self-builds on the ground floor use UFH. Upstairs can be UFH (low-profile 25–50 mm) or radiators. Radiators are faster to respond (15 minutes vs 1–2 hours for UFH) and easier to zone. UFH needs a smart thermostat to schedule the heat (run overnight on cheap rate, off during the day).
When this matters most
You're at design stage and need to choose 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
Is underfloor heating better than radiators?
With a heat pump, yes — UFH is more efficient and more comfortable. With oil or gas, UFH is slightly less efficient but more even. Radiators are faster to respond and easier to zone.
How much do radiators cost in Ireland?
€300–€1,000 each depending on size. A 150 m² house typically needs 8–15 radiators. Plus valves, pipework, and installation.
Can I have both UFH and radiators?
Yes, common on two-storey houses. UFH downstairs (where the heat pump's low flow temperature works best), radiators upstairs (where faster response is helpful). One heat pump can serve both.
When this matters most
You're at design stage and need to choose 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 →
- Solar PV in Ireland 2026 — 6 kWp Cost, Payback, and the SEAI Grant →
- Underfloor Heating in Ireland — Cost, Floor Build-up, and the Heat Pump Pairing →
Compare with
Alternative approaches worth knowing.