The climate in NZ is mild compared to the extremes that the USA can get. I ran the A/C on the Daikin unit for about 15 days this summer mostly to remove humidity. In winter we only have brief periods of freezing temperatures usually just over night.
If the days are clear and sun shining the house gets passive heating and no heating is needed during the day. Also there is no one home during the week.
The electric plan i am on has a night rate which is less than half of day rate , so i heat my hot water cylinder (300 Litre) , dish washer , clothes dryer and run the heat pump . I dont think that having the daikin out door as alternative hx would provide any benefits as this is when its coldest and in the past the daikin was not providing enough heat.
hope that makes sense.
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