The AC in our master bedroom and other areas were not working at all during the big heat wave - it had frozen. I purchased a Smart Betty voucher from Integrated Home Energy Solutions and called them to see if they could come that day. Mike (the owner), knowing that we had issues, came the very next day, diagnosed the problem quickly and offered us a very inexpensive solution on top of the "tune up" I had purchased. He was so nice and so fair. I almost didn't believe him when he said $125 to get our AC working again!!! He will be the one I call next time for sure. I highly recommend his company!!