New here, great forum with lots of good info. I'm ready to replace my failing Lennox AC that is matched up with a Lennox Pulse propane furnace that was installed when we built the house in 1987. I would like to keep my Pulse furnace even though it is quite old. My H&A contractor did my load calculations and has suggested the following: Trane XL15I (2.5 Ton Heat pump) with coil TXB042. The propane heat will be set up to operate when the outside temp gets too cold for the heat pump to be effective. I need a quite and dependable set up. I'm located in the triad of North Carolina and have 2300 sf heated area. Does this sound like a proper set up? Any suggestions?