I gave Comfort First Heating and Cooling five stars because they fixed my problem and I haven't had any problems since then. The problem was with my AC unit, it wasn't cooling. I went through my home warranty and Comfort First was recommended by my plan. The technician came out and asked me about the problem, figured out what was wrong, then he went outside to work on it and he did as he said. I only had to pay $75 because the rest was covered by my warranty.