I had a new Trane system installed recently in my home. It is an xl14i heat pump and xv90 gas furnace. When the heat turns on, there is a 1 second rumble/vibration somewhere in the furnace, and about a 2 second rumble when the system shuts down. I've had the installer out 3 times and they can never fix it. Seems like they make it quieter, but in a couple days it's back. The furnace is in the garage and backs to one of the walls of our primary living area, so it is rather annoying to hear the thing rumble on and off. Has anyone else had similar issues? I don't want to pay > $10K for this new system, which is supposed to be so quiet I won't even know it's on (yeah, right).
Also, I have some issues with the system heating the house in the morning. I have a 2500 sq ft home, 2 floors. The thermostat is upstairs. On a typical morning, 45 degrees outside, house is at around
- At 7am I have it programmed to heat to 70. I have the adaptive intelligence thing turned off. First thing it does is start up the heat pump. After a minute or so it switches over to gas, then it cycles back and forth between heat pump/gas, and it ends up taking about 2 hours or longer to heat the house up 5 degrees to 70. I went into the programming of the thermostat and changed one option to make the recovery ramp more aggressive, and it seemed to help some, keeping the gas heat on longer, but it still cycles back and forth. I would figure the system would be smart enough to immediately go to gas, ramp up quickly as possible to 70, then switch to heat pump for the rest.. Is that too much to ask for? Is there any way I can program this better?
One more thing, how do I know if the second stage heat is actually working? Should I hear the furnace speed up or feel more air coming out of the registers? Does second stage heat system work with both the heat pump and gas, or just when the gas is running? Thanks for any help Jason