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That's actually very smart. They've just extended the coefficient of performance by cooling the compressor. It's only 10% less efficient (2.7x not 3x) at higher temperatures.
Avoiding new pipework/better insulated homes means heat pumps can scale sooner.
Customers can still improve their home at a later date to reap double the rewards (less energy used and improved efficiency on the energy you still use).
JonoMarshall
If its designed in UK and looks vaguely like an upturned bin. Its probably linked with >>
http://www.red-limited.com/