Complete 2 heating pm check. Find upstairs heating system operating normal. Change filter, check safety and operation. Find downstairs heating system operating with blower motor loosing oil but still ok at this time. Need to keep check. Did not change filter, find humidifier leaking water due to poor water panel#10. Need to repalce filter to stop leak but customer want humidifier off at this time. Heating furnace operating at this time. Give customer estimate to upgrade tstat.