How do solar heat pumps work?
A solar heat pump hot water system operates similar to a household air conditioner or refrigerator (in reverse). Air is drawn into the heat pump with a fan and then through an evaporator which contains a special type of refrigerant. This refrigerant, R134a, has a boiling point of -21°C, meaning that your heat pump will still function in extremely cold conditions. The refrigerant, now in gaseous form, is then compressed by the heat pump, which generates heat. This heat is then transferred into the storage tank, heating your household’s water supply for later use. Since the heat has been extracted from the refrigerant, the cool liquid returns to the evaporator to start the process all over again.
Why should I choose a Stiebel Eltron heat pump?
If you can’t have solar hot water collectors on your roof due to available space or shading, then solar heat pump hot water systems are a great solution. Heat pump units offer a flexible and affordable yet still highly energy efficiency solar hot water option. Stiebel Eltron is a world-class heat pump, with all parts manufactured in Germany and Japan.
Key features of the Stiebel Eltron heat pump include:
- Manufactured in Germany with over 30 years experience
- The highest efficiency rating – up to 75%
- 300 Litre tank with the best delivery of hot water in its class
- Lowest power draw of all heat pump units at 2.3 amps – can be installed as a plug-in
- Operates in lower temperatures (down to 0°)
- Works indoors and outdoors
- Will operate on off peak power and timers
- Can be installed internally – only 13m3; area required
To view the Stiebel Eltron heat pump brochure, click here.
Source: www.stiebel.com.au/heat-pumps/