Including the closely related terms insulation, and insulation.
… for each block of flats. Individual heat pump within each flat. Upgrade to high performance triple glazing. Air tightness measures. Improve flat roof insulation where appropriate. 437,385 102 / 804 / 2025 Housing R3 Install individual Air Source Heat Pumps, hot water cylinders and upgraded heat emitters. Average size 5kW. 662,323 154 / 1,217 / 2025 Housing R4 Install individual Air…
… Source Heat Pumps, hot water cylinders and upgraded heat emitters. Average size 6kW. 933,180 218 / 1,715 / 2025 Housing R5 Install Individual ASHP 8kW. 7,859,982 1,216 / 37,329 / 2030 Housing R6 Install Individual ASHP Average 8kW. 14,472,413 2,238 / 68,734 / 2030 Housing R7 Assumed package of loft insulation, floor insulation, triple glazing and air tightness and ventilation measures…
…. 363,534 85 / 668 / 2030 Housing R8 Whole house deep retrofit to net zero energy standard (eg Energiesprong). Including heat pump, solar PV, battery storage and space heating demand <30 kWh per m2 per pa. 379,044 88 / 697 / 2030 Housing R9 Assumed package of loft insulation, floor insulation, triple glazing and air tightness and ventilation…