I first had G-force come a few months ago to replace a seized furnace blower motor. While he was here, I mentioned that the furnace kept "cycling" on and off while bringing the temperature up by a couple of degrees and that 3 different technicians had told me it was normal. He took a few minutes to simply increase the fan speed and...problem solved!
I then had him back last week to clean the furnace. Again, he was much more thorough than anyone else who'd been here. He took the time to remove the blower assembly and got deep into the furnace to clean everything, including all the hoses, the fan, and whatever else is in there. Finally, just before he left, I asked him how much gas a fireplace pilot light used. When I told him mine was off, he explained there are several reasons why it is better left on and then when ahead and lit it for me, no charge.
I highly recommend G-force