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There are split system heat pump hot water heaters which allows you to exchange heat with the outside environment, eg. https://reclaimenergy.com.au/products/res

by caf 5y ago

There are split system heat pump hot water heaters which allows you to exchange heat with the outside environment, eg. https://reclaimenergy.com.au/products/residential/ https://reclaimenergy.com.au/products/residential/

ttwwmm 5y ago
The all-in-one units can also be installed with ducting.