Performed precision a/c tune up on (2) r-22 York a/c systems. Replaced (2) 16x25x1 air filters. Checked all electrical conections and components. Found weak 45/5 capacitor on 1st floor a/c system. Checked refrigerant pressures and temperatures at indoor and outdoor units. Provided estimate to replace capacitor. Both a/c s are working at time of service.