Performed preventative maintenance for 3 heat pump systems. System #1 located in the attic, model #CBA38MV-018/024-230, serial #1618F16416. The evaporator coil’s are clean and in good condition. Tested the drain pan and drain line with several bottles of water to ensure that there are no leaks or clogs in the system. Replaced the air filter (homeowner supplied) size 20x20x5. Checked all electrical components to ensure that they are secure and in good condition. The blower is operating within the manufacturer’s specs. Supply temp is at 101°f. The condenser coil’s are clean and in good condition. The condenser amp draws are .80 for the fan and 9.96 for the compressor. System #2 located in the attic, model #Cba38mv-042-230-6-02, serial #1621j04024. The evaporator coil’s are clean and in good condition. Tested the drain pan and drain line with several bottles of water to ensure that there are no leaks or clogs. Replaced the homeowner supplied air filter size 20x20x5.