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Retrofitting Strategy |
Replacement of electric/gas heater/boiler to heat pump
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Heat pump works on the principle of drawing heat from air or water heat source through a refrigerant cycle. Efficiency of heat pumps is much higher than direct heating by electric or gas heater. It can be used for:
- Providing heating for indoor space requiring heating. There are air-conditioning units with reverse cycle function that can provide heating in the winter and cooling in the summer.
- Generating heating water for central HVAC systems.
- Generating hot water for domestic or commercial hot water system.
- Through recovery devices, hot water can be generated at the condenser of central or packaged air-conditioning systems.
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| Consideration
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- Ensure the electricity supply has the spare capacity to operate the heat pumps if the conversion is from gas to heat pump.
- Where feasible, solar heaters may be installed for preheating the water to the heat pump to save electricity consumption.
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| Estimated Saving
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| The retrofit strategies is a mixture of different strategies and the saving estimation should be make reference to other single strategies.
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