Super tune up Blower very dusty and inefficient Furnace rattles while heating. Could not pin down location but is either inducer or heat exchanger 25 degree cooling delta instead of 20 Filter line dryer has a 3.5 delta across it causing higher line temps and straining the compressor Evap coil extremely rusted and leaking refrigerant Setting up follow up for Toby no later than Monday. Homeowner will discuss everything with his wife and may reach out earlier