Did a preventative maintenance on a goodmen High efficiency gas furnace. During maintenance I clean the flame sensor changed out to 16 x 25 x 1 customer supplied filter. Also made sure the condensate pump was working and that the trap was clear. Did an amp check on the inducer motor and blower motor which Both met the furnace specs. Well testing the unit the unit went off on high limit and eventually turn back on this is probably been happening for a while and the customer did not even notice to resolve the problem I would recommend a duct cleaning. M#GMSS961005CNAA s# 1604179899 Did a maintenance on a Mini split. During the maintenance I cleaned off the filters also checked the spit temperature on the outdoor unit. Cleaned off the coil outside it was very dusty also made sure that it was draining properly made sure all electrical connections are tight and secure and they were system is operating properly at this point heat pump model number.A-SMH12SC air handler m#B-SMH12SC s#