I am a highly skilled and experienced home service professional. I recently completed a service check on a unit. My job was to check the charge of the unit and make sure it was working properly. I checked the unit's electrical system, plumbing, and heating and cooling systems. I also tested the appliances and made sure they were working correctly. I also checked the unit's insulation and ventilation to ensure it was working properly. I made sure to document my findings and provide a detailed report to the client.