Heat pumps for the production of hot water for households or large scale facilities within the residential sector or hotels

Reference: C.1.3

LEME Mitigation

Heat Pumps: producing hot water of households or large scale facilities with high SEER above 4, leading to high electricity efficiency and avoiding constraints linked to large roof surface needed for thermal solar panels

Heat Pumps: Domestic hot water (households) and large scale implementation (hotel sctor) with already case-studies available (hotel sector)

The investment shall not replace existing solar heating device. SCOP ≥ 4,2 which leads to 70-75% of electricity savings (reference: electric water heating) Storage tanks of 150-300 l for households Storage tanks of 2 000 l to 15 000 l for the hotel sector

Eurovent or equivalent international certfication

Estimated pay back time short term : 2-4 years, medium term: 4-6 years, long term : 6-8 years (*)

Meduim term

The hot water can be produced either by electric water heaters which are low investment solutions but relying only on electricity (grid). Solar water heaters widely used in the domestic and houssing sectors have a productivity of 400-600 kWh /m2. The surface constraint for implementing large collective solar collectors is a limiting factor for promoting thermal solar energy. The need to have a monitoring tool for checking in real time the collector productivity is also a strong limitation. The use of heat pumps is a major shift on the market from these technologies to more efficient ones (heat pumlps) which can be ”plug in” and easily maintained.