Why do aerothermal and underfloor heating work so well together?
The reason is thermodynamic: hydronic underfloor heating needs water at 28–40 °C to heat efficiently. Aerothermal heat pumps —Daikin Altherma, Panasonic Aquarea, Vaillant aroTHERM, De Dietrich Alezio— produce exactly that temperature range with the maximum possible COP.
| Heat emitter | Required water temperature | Typical aerothermal COP | Saving vs heating oil |
|---|---|---|---|
| Underfloor heating | 28–40 °C | 4.5–5.5 | 75–80% |
| Fan coils | 40–50 °C | 3.8–4.5 | 65–72% |
| Oversized radiators | 50–55 °C | 3.0–3.5 | 55–65% |
| Conventional radiators | 60–80 °C | 2.0–2.8 | 30–50% |
Official Installers in Alt Empordà
Total cost of the combined system in new builds
| Component | 120 m² home | 180 m² home |
|---|---|---|
| Aerothermal heat pump (Daikin/Panasonic/Vaillant/De Dietrich) | €7,000 – 10,000 | €9,000 – 14,000 |
| Hydronic underfloor heating (complete installation) | €3,500 – 5,500 | €5,000 – 8,000 |
| DHW storage tank 200–300 L | €800 – 1,200 | €1,000 – 1,500 |
| TOTAL (indicative) | €12,500 – 18,700 | €16,500 – 26,000 |
| Available grants (up to 40%) | −€5,000 – 7,500 | −€6,600 – 10,400 |
| Estimated net cost | €7,500 – 13,700 | €9,900 – 19,600 |
Frequently asked questions
Can underfloor heating and the heat pump be installed at separate times?
Underfloor heating must be installed during construction (before the mortar screed). The heat pump can be installed later if necessary. Enclos Instal coordinates both installations to guarantee hydraulic and electrical compatibility from day one.