Tested and checked all components -No filters replaced at this time, 3 Filters for HVAC. -No gas leaks -37 degrees temperature rise -Tightened all low and high voltage wiring -Performed safety inspection on Heat Exchanger; No areas of concern at this time, has thermal stress but is safe to operate. -Evaporator Coil inspected for restricted air, light dust build up -Indoor Blower motor Amps 8.40A out of 11.80A Max -Cleared Inducer port -Cleaned Ignition assembly -Hot Surface Igniter started to develop Heat stress (White marks), keep an eye on it. -Primary circuit Board okay at this time -Inducer Assembly amp draw 1.68A out of 1.70A Max, making a faint grinding sounds as if bearings are going out. (future repair) HVAC operational at this time. Call Complete.