A larger heat pump costs more but has lower running costs and visa-versa. Correct sizing will give the optimal balance between investment and operating costs.
Installing an efficient heat pump reduces heating costs from 50-75% compared to an old heating system. Factors affecting output include the condition of the house, the heating system and outdoor temperature – climate zone and the price trend of the type of energy being used.
NB! A good heat pump installation increases the value of your home.