Performed oil pm on oil boiler 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 7.0%o2 30ppm co 0 smoke Performed ac pm on both systems 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 testing the ac unit in the closet of the front of the house we found that the heat and ac were running at the same time. Upon further investigation we found the zone valve we diagnosed as bad last year hooked up. When we left the property last year we had the zone valve disconnected because it was stuck in the open position and was continuously sending hot water to the air handler. Disconnect