Furnace and air conditioning maintenance. Furnace is In good shape for its age. Inspected heat exchanger. Has a lot of stress marks, and it’s very purple which is a sign of over heating. Venter motor is loud and could benefit replacing the motor. Air conditioning has very low charge of R22. Last years repot from our technician was 160 PISG on high, 60 PSIG on low. Today was 140 PSIG on the high 42 PSIG on the low. While doing a furnace maintenance, noticed the rental water heater exhaust flu collar popped off the venter motor. The exhaust pipe is too short and was forced into the flu collar during installation. Recommend to customer to call enercare to fix venting to prevent this from happening again.