PDF《Evidence gathering – Low》

80 products were identified that are available in the UK market, from

12 manufacturers. Costs and Performance The price of high temperature heat pumps ranges from 20% to 35% more than standard heat pumps, but the price premium based on fully installed costs is closer to 10-20%. The product price for high temperature heat pumps ranges from ?3,000 - ?7,000 (air source), with the fully installed price ranging from ?6,000 to ?14,000.This compares with a typical gas fired boiler replacement cost of ?2,500. Overall, stakeholders indicated that 30-40% energy cost savings could be achieved compared to an oil fired boiler (at 2014/15 prices), although these may have reduced with recent significant reductions in oil price. Small cost savings are possible relative to a gas fired boiler, but these would be unlikely to give an economic payback period at current energy prices in the absence of incentives. High temperature heat pumps are well covered by existing heat pump standards and regulations for performance and design. COPs3 from 2.2 to 3.1 were quoted at A7/W65 (ambient air source at 7°C and water output at 65°C) for the air source products studied. Few products quote a Seasonal

3 Coefficient of performance (COP) is a measure of steady state performance of a heat pump at specific source and sink temperatures. Domestic High Temperature Heat Pumps

9 Space Heating Energy Efficiency (SSHEE)4 at 65°C water output........