Performed two system heating maintenance. I checked amps, capacitors, filters, electrical, cleanliness, drains, and safeties. Systems are heating to manufacture specifications. Recommendations 1. The down stairs system isn’t sealed on the the return side. This can cause the system to pull in attic air resulting is a dirtier system. 2. The downstairs system has a duct on the backside that is coming loose and may start to heat/cool the attic. 3. The upstairs system’s blower motor is getting matted with dust. This makes the blower work harder to operate and can result in premature failure. 4. Both systems need duct cleaning due to high dust content that will begin to get stuck to the vital parts of the system and cause failures. Examples: blower motor and evaporator coil. 5. Both systems could use drain treatment to prepare them for cooling season.