...we try to minimise system usage when defrost cycles are required.
So glad you brought this up.
During my minimal research into geo HVAC, I wanted to know if there was even a prayer for it's use with an off-grid solar power system. I contacted a geo contractor to discuss power draws. Besides the normal amperage, he noted that the defrosters would be killers. Huh? Defrosters? As I understood his explanation, just like a window air conditioner that runs too cold for too long, the coils can eventually freeze up with frost on their exterior. OK, I know that occurrence. He said that a HP is exactly the same, operating in reverse. The same thing will occur and some killer amperage defrosters can/will kick in for about 5 minutes to melt it off.
Correct?
