This is why I couple my heat pump operation to solar output from my panels. Any time I can fully self power it is a 100% win. During the darkest and coldest months however, the existing gas boiler takes the lead.
My heat pump is 5 years old and has never leaked refrigerant. I also collect the condensate for the gardens.
My heat pump is 5 years old and has never leaked refrigerant. I also collect the condensate for the gardens.