Had a brand new furnace and AC unit installed - the units were not properly tested or adjusted. It is a two stage furnace and some of the wires for the thermostat were broke for the second stage to work properly, the installers never properly tested the unit to see if the second stage would even work. I complained to the owner of the company, so he stopped out and had to adjust the gas valve, because it was never adjusted. He was the one that noticed that the wires were broke. They sent out another worker to replace the wires. He could not run new wires to the same location so he moved the thermostat to another location in the house. He ran a new wire down the gas line and used electrical tape to keep it in place. He left all of the old wire at the bottom of the furnace instead of removing it, His work looked like a rats nest when he was done. There was also a rebate for this unit but the company never sent me the paper work, so I lost $800.00. I give this company an "F" for the service and installation. I have never heard another word from this company since the last worker came out.