Underfloor heating installation cost in Ireland (2026)
Installing wet (hydronic) underfloor heating in an Irish new build or extension costs €65 to €95 per m² complete with 16mm pipework.
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Estimated Irish Supply & Fit Range
€5,850 to €8,550
90 m² at €65 to €95 per m² (2026 Irish supply-and-install guide rate, incl. 13.5% VAT).
- Includes manifold, actuators, room thermostats & 6-bar pressure test.
- Eligible for 13.5% reduced VAT on supply-and-fit residential contracts.
- Up to €2,000 SEAI Central Heating Grant when paired with an eligible heat pump.
Complete 2026 installation rates per square metre
| System & installation scope | Supply & fit per m² | Typical floor total | What is included in the rate |
|---|---|---|---|
| Wet hydronic (pipe, manifold & stats only) | €40–€65/m² | €3,600–€5,850 (90 m²) | 16mm PE-Xa pipe, clip rails, stainless manifold, actuators, wiring centre & pressure test |
| Wet hydronic + 50mm liquid screed package | €65–€95/m² | €5,850–€8,550 (90 m²) | Full hydronic pipe & manifold install plus pumped 50mm anhydrite or cement liquid screed |
| Low-profile retrofit overlay (15mm–18mm) | €85–€125/m² | €3,400–€5,000 (40 m²) | Grooved/castellated overlay panels, 12mm pipe, manifold, mixing set & self-levelling compound |
| Dust-free screed milling (existing slab) | €70–€105/m² | €3,500–€5,250 (50 m²) | Diamond-cut channels into existing screed, 16mm pipe pressed flush, manifold & zone stats |
| Full ground-floor dig-out, PIR & screed | €145–€210/m² | €8,700–€12,600 (60 m²) | Break & skip old concrete, radon/DPM membrane, 120–150mm PIR insulation, wet UFH & screed |
| Electric underfloor heating mat (150W–200W/m²) | €45–€75/m² | €380–€680 (5 m² bath) | Twin-conductor fibreglass heating mat, programmable touch thermostat + floor probe & REC connection |
Supply-and-install heating works in private Irish dwellings qualify for the reduced 13.5% construction VAT rate provided materials do not exceed two-thirds of the total contract value. Always confirm whether your written quote shows 13.5% VAT included.
What typical Irish projects cost all-in
| Project type & floor area | Pipe, manifold & controls | With 50mm liquid screed | Notes on zones & heat source |
|---|---|---|---|
| 4 m²–6 m² bathroom or en-suite (electric mat) | €240–€390 (kit + stat) | N/A (tiled directly in adhesive) | Includes 150W/m² mat, dual air/floor sensor stat & REC wiring |
| 35 m² rear kitchen-diner extension (wet) | €1,850–€2,600 | €2,950–€3,850 | 2–3 port manifold; adds €360 blending pump pack if connected to gas/oil boiler |
| 50 m² ground-floor retrofit (16mm overlay) | €3,800–€5,200 | €4,600–€6,250 (with levelling) | 15mm–18mm castellated or foil-faced boards laid over existing slab |
| 100 m² 3-bed new build ground floor (wet) | €4,200–€6,200 | €6,600–€9,200 | 7–9 port manifold, 4–5 smart thermostat zones, direct 35°C heat pump feed |
| 180 m² 4-bed detached house (ground + first floor) | €7,400–€11,200 | €11,700–€16,500 | Two manifolds (ground + upstairs concrete/joist deck), 8–10 room zones |
Itemised manifold, pipe & control hardware costs
| Component | Typical Irish trade price (incl. VAT) | When your installation needs it |
|---|---|---|
| 16mm 5-layer PE-Xa / PE-RT oxygen-barrier pipe (per 100m coil) | €115–€165 | Roughly 6.5 linear metres of pipe per m² of floor at 150mm spacing |
| Stainless-steel manifold (2-port to 12-port with flow meters) | €160–€385 | One port per pipe loop (every 12–16 m² of floor takes one port) |
| Boiler thermostatic pump & 3-way mixing valve pack | €340–€420 | Required on gas/oil boilers to blend 70°C water down to 40°C–45°C; not needed on direct heat pumps |
| 230V electro-thermal actuator head (per manifold port) | €20–€28 | Opens and closes each individual loop when its room thermostat calls for heat |
| 8-zone master wiring centre (pump & boiler interlock) | €95–€155 | Links room thermostats, actuators, manifold pump and heat source |
| Programmable digital / Wi-Fi smart thermostat (per zone) | €65–€145 | Fitted in every independently controlled room; bathrooms add a remote floor probe |
| 120mm–150mm foil-faced PIR floor insulation board | €22–€34/m² | Required under new slabs and full dig-outs to achieve Part L U-value ≤ 0.15 W/m²K |
2026 running costs & SEAI grant eligibility
Your annual running cost is determined by the heat source feeding the floor rather than the pipework itself. Because underfloor heating turns the entire floor slab into a low-temperature radiant emitter, an air-to-water heat pump can run at 35°C flow temperature (achieving an SCOP of 3.8 to 4.2, or roughly 8.5c to 9.8c per kWh of heat on standard day/smart tariffs, and under 5c per kWh during night-boost hours). By comparison, direct 230V electric heating mats cost roughly 34c per kWh on daytime tariffs.
Under the SEAI Heat Pump System Grant (up to €14,500 for houses built before 2021, or up to €11,500 for apartments), homeowners can claim up to €2,000 (€1,000 for apartments) under the Central Heating Grant element specifically towards installing underfloor heating or upgrading radiators. Standalone pre-2011 heating control upgrades also qualify for the €700 SEAI Heating Controls Grant.
Get your underfloor heating priced in 4 quick taps
Tell us about your floor and heat source. Your request goes to one vetted underfloor heating installer covering your county, who rings you back to discuss pipe spacing, manifold zones and screed depth before giving a written quote.
Underfloor heating installation guides & specifications
Detailed Irish engineering & cost guides covering pipe spacing, manifold balancing, 15mm retrofit overlays, 35°C heat pump commissioning and floor coverings.
More technical resources: Liquid screed for underfloor heating · All guides & calculator hub · Technical trade glossary (A–Z) · Frequently asked questions · All 26 counties covered
Installation costs: common questions
How much does it cost to install underfloor heating in a 3-bed house in Ireland?
For a typical 90 m² to 110 m² ground floor in a new 3-bed house, supplying and fitting wet hydronic underfloor heating (16mm pipe, stainless manifold, actuators and multi-zone thermostats) costs €4,000 to €6,500 before screed, or €6,500 to €9,800 complete with 50mm pumped liquid screed.
Why does a 35 m² kitchen extension cost more per m² than a full new build?
Every hydronic installation requires a stainless-steel manifold, wiring centre, pressure-test visit and (when connected to an existing gas or oil boiler) a €350–€420 thermostatic mixing pump pack. Spreading that fixed mechanical plant across 35 m² makes the per-m² rate slightly higher than on a 120 m² new build.
Does underfloor heating installation qualify for 13.5% VAT in Ireland?
Yes — under Irish Revenue's two-thirds rule for construction services on residential properties, supply-and-install underfloor heating and floor screeding are billed at the reduced 13.5% VAT rate rather than the 23% supply-only materials rate.
Can I get an SEAI grant for installing underfloor heating?
SEAI does not offer a standalone grant for underfloor heating on an oil or gas boiler, but provides up to €2,000 (€1,000 for apartments) towards new underfloor heating as part of the SEAI Heat Pump System Grant package (up to €14,500 total for a house).
Underfloor heating installation across all 26 counties
Every quote request is routed to one vetted underfloor heating installer covering your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Wexford, Louth, Kerry, Clare, Waterford and Donegal. Pick your county for local housing, heating and radon figures. View full 26-county directory →
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