Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 7.2%o2 62ppm co 0 smoke While performing the heating maintenance we found the domestic water coil gasket was starting to leak when the water was cold. Visually inspected indoor evap coil and blower compartment Checked all electrical connections and safeties Checked volts and amps Visually inspected air filter Rinsed condenser coil Blew out drain line and poured water to ensure properly draining Tested condensate pump Checked refrigerant levels Checked capacitor Took temps While performing the maintenance we found the capacitor was well blow factory specifications. Recommended replacing the capacitor. After getting customer approval we replaced the capacitor. Found the system was slightly low on refrigerant. Informed the customer