Since the obligation to consume at least 5 kWh / m2 / year of renewable energy, households usually have to use two energies. But the heat pump (PAC), although powered by electricity, is considered a renewable energy.
Because the heat pump (PAC) is considered a renewable energy, it can be self-sufficient. It is therefore possible to choose a dual-service model, which also provides DHW production, or to combine a single-service heat pump with a thermodynamic water heater or even an electrosolar water heater. However, in the case of an air / water heat pump, since its efficiency decreases with the outside temperature, it is recommended to size it to ensure 80% of the heating needs and, in very cold weather, to foresee the extra with a gas boiler or even a pellet stove. This is the principle of hybrid solutions that, under the same body, combine PAC and boiler. CAP alone, PAC associated with a boiler, or boiler alone: it is the regulator that determines, at time T, the most economical production mode, according to the efficiency of the appliances and the outside temperature. The solution is interesting for anyone who does not want to install sensors on their roof.
Price level: from €€ to €€€
Cost to use: €€
Climatic zones: all zones
This cap is associated with a 300-liter tank that has two functions: to protect the cap by avoiding short and frequent cycles, and to accumulate heat for heating and DHW. The heating control, automatically switched off and on according to the season, can be controlled remotely via a smartphone. The set can be connected to solar collectors. "HPSU", Rotex.
With a power of 5 kW, this air / water heat pump is dedicated to the new house. It offers almost constant power down to -15 ° C. The electric backup is therefore little used, or not at all in some areas. Cop of 4.49. "Compress 3000 AWS", Bosch TTH.
This dual-service PAC, combined with a 200-liter DHW cylinder (hot water available in 30 minutes), displays a Cop up to 4.80 and a constant power down to -15 ° C outside. Able to regulate two independent zones (floor heating and radiators, for example), it is equipped with a remote control with weekly programming. A Wi-Fi interface allows wireless and remote management of the installation. "Ecodan Hydrobox Duo", Mitsubishi Electric.
Alternative to the heated floor, this hydraulic dynamic radiator operates at low temperature (30-35 ° C) thanks to a fan of very low power, ensuring a heat diffusion as needed up to 2 kWh. Independent electronic regulation. "Divio", Ciat.