Bill – Thank you so much for your willingness to help me out on a Sunday with your great advice about “defrosting” my air conditioner coils. I left the air off with only the blower running as you said and the AC appears to be working properly now. I already knew your company was the best in terms of customer service but you have proven it to me again today. I’ll be calling for my furnace check-up early this fall. Thanks again and I’ll try to do a better job of keeping up on my furnace filter changes.