Radiators vs Underfloor Heating in Ireland — Cost, Comfort, and Heat Pump Pairing

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).

TL;DR

• UFH: €60–€100/m². Radiators: €300–€1,000 each (depending on size). 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) or radiators. Radiators are faster to respond (15 minutes vs 1–2 hours for UFH).

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.

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.

Sources

SEAI, Heat Pump and UFH guidance. https://www.seai.ie/