how do you efficiently run an old split system heater/cooler?

Question

Is it more efficient to say run it for 30 minutes at 30 degrees heating or for 2 hours at 26 degrees?

In: 3

Answer 1

Split systems are more effective (power wise), the smaller difference in temperature is on both sides. So for heating – as low inside temperature as comfortable, for cooling – as high inside temperarure as comfortable.