Renew 4 system Comfort Club Membership plan and completed 4 cooling preventative maintenance checks. Did not change the filter, check drain and system operations. Find 2 5-year-old Lennox cooling system operating within the manufacturer specs. No concern at this time. Find master bathroom system operating with worn fan motor and running hot. Need to keep checking. Find basement heat pump operating with stress compressor and coil rusted. Need to keep checking.