My heat pump was hit by lightening last year, parts were replaced & all seemed fine. The heater continued recently having problems with no power. Found out the breaker was fried from the lightening & finally gave out.. that was replaced. Now my heat comes on and off every 5-6 minutes. A/C tech has been out 3 times with no resolution. Said it might be the thermostat & wants $150 more to change that. I am on a fixed income & have already spent $300 in repairs. My home is only a year old. Any suggestions? Thank You!