In Scottsdale, near East Main Street and North Parkway Avenue doing a repair on leaking unit. Upon arrival, found drain pan full of water. Removed existing PVC and re ran new condensation line. Also, since everything was disconnected, flushed condensation pipe. Glued all new fittings and PVC. Upon departure, made sure condensing properly and no leak present. If problem occurs again, recommend adding pump to air handler.