Do Heat Pumps Work with Underfloor Heating?
Yes. Heat pumps and underfloor heating (UFH) are a perfect match because both operate efficiently at lower water temperatures (35–55 °C). This means:
- Higher efficiency (better CoP / SPF)
- Lower running costs compared to radiators
- More even heat distribution and comfort
What Are the Benefits of Underfloor Heating with a Heat Pump?
- Energy savings: Runs at low water temperatures, improving efficiency.
- Future-proof heating: Designed to work with UK net zero goals.
- Comfort: Even warmth across the floor, no cold spots.
- Design freedom: No radiators taking up wall space.
- Low carbon: Helps cut emissions compared to gas or oil heating.
Which Type of Underfloor Heating Works Best with Heat Pumps?
| Type | Works with Heat Pumps? | Best Use Case | Running Cost |
| Water (hydronic) | ✅ Yes | Whole-house systems, new builds, large spaces | Low |
| Electric | ⚠ Limited | Bathrooms, small rooms, renovations | Higher |
For most UK homes, water underfloor heating + heat pump is the best solution.
How Do You Design Underfloor Heating for a Heat Pump?
Key considerations:
- Carry out a room-by-room heat loss calculation.
- Use pipe spacing of 100–150 mm for efficient heat output.
- Keep loop lengths within manufacturer’s limits.
- Install high-quality floor insulation to avoid downward heat loss.
- Use a manifold with zoning for room-by-room control.
- Integrate smart thermostats and weather compensation.
How Much Does Underfloor Heating with a Heat Pump Cost in the UK?
- Air source heat pump (ASHP): £10,000–£13,000 (before grants).
- Boiler Upgrade Scheme: £7,500 grant available (England & Wales).
- UFH installation (whole house): £80–£150 per m² depending on system.
- Running costs: Cheaper than direct electric, competitive with gas when designed well.
Are There UK Grants for Heat Pumps?
Yes. The Boiler Upgrade Scheme (BUS) provides a grant of up to £7,500 towards the cost of a heat pump in England & Wales. Scotland has additional support via Home Energy Scotland loans and grants.
What Regulations Apply in the UK?
- MCS Certification: Required for grant eligibility.
- Building Regulations Part L: Energy efficiency compliance.
- Planning Permission: Usually not needed (permitted development), except for listed buildings or conservation areas.
- Noise Limits: Outdoor units must comply with local noise guidelines.
Step-by-Step: How to Install Underfloor Heating with a Heat Pump
- Prepare the subfloor (level, insulated).
- Lay UFH pipes at recommended spacing.
- Connect to the manifold with correct zoning.
- Pressure-test system before covering.
- Apply screed or overlay boards.
- Commission the system (balance flows, bleed loops).
- Integrate controls with the heat pump.
Installers should always pressure-test and commission before handover.
FAQs
Q: Can UFH + heat pumps replace radiators completely?
Yes. With proper design, they can heat an entire home without radiators.
Q: What floor coverings can I use?
Tiles, stone, engineered wood, vinyl, and low-tog carpets.
Q: How long does installation take?
- Electric UFH: 1–2 days per room.
- Water UFH: 3–7 days depending on property size.
Q: Do I need extra insulation?
Yes. Good insulation is critical for efficiency and comfort.
Q: How long will the system last?
UFH pipework can last 50+ years, with manifolds, pumps, and controls requiring periodic maintenance.
Next Steps
At Underfloor Heating Systems, we provide:
- Complete UFH kits compatible with heat pumps.
- Full design service (heat loss calcs + CAD).
- Trade support for plumbers, heating engineers, and installers.