We just moved into our condo recently . We donot know how to find out what type of Furnace we have .The heat pump is located outside the condo . The Air Handler unit and the water heater are on the attic .We have a Trane XT-500 thermostat for which I have no manual to set the temperatures . We have been just adjusting at random . I am unable to get an online info on the thermostat . Can someone help me how to identify the type of heat pump and furnace we have . Everything in the condo works on electricity . The previous owner told me that some gas needs to be filled periodically . Please help .
Thanks , Kam