Performed routine maintenance on 90% furnace, inspected blower wheel, no imbalance at this time, very little buildup, filters changed regularly. Removed and cleaned condos are trap, some sediment found upon cleaning, flame sensor and igniter both tested to factor specs as well as amps being pulled by the inducer and blower. Pressure switch hoses as well as condensate lines pulled and cleaned, gas pressure was a little high, adjusted to proper measurements. Overall unit is operating in good condition.