Better Planet was selected to design, supply, install and commission a Ground Source Heat Pump and Underfloor Heating in connection to an ongoing comprehensive renovation of this Manor House in Hertfordshire.

Our involvement started with a room by room heat loss calculation allowing us to size the heat pump and design the underfloor heating. We also carried out a draft EPC allowing us to accurately predict future payments under the domestic RHI scheme.

Heat is collected from a field using 1.2 km of 40mm collector pipe. Ground works using a trenching machine subcontracted by Better Planet. The collector pipes are connected to a ground manifold and two 63mm pipes connect the manifold and the plant room.

Underfloor Heating throughout the property. A screed system on the ground floor and a dry screed system on first and second floor.

Project summary:

Heat Pump:

  • A F1345 – 30 kW heat pump from Nibe
  • One 500 litre and one 300 litre heat pump cylinder
  • A 300 litre buffer tank
  • Four ground loops 300 m each 40mm pipe
  • Ground manifold
  • 63mm flow and return
  • Estimated RHI payments over 7 years: £69,271

Underfloor Heating:

  • 16mm PERT pipe from Swedish manufacturer LK
  • Manifolds and fittings from Larsson Underfloor
  • Dry Screed boards from Manicor
  • Controls from Heatmiser