I arrived at our clients home to preform a single system cooling maintenance. Our client had recently replaced the air filter and did not need it changed today. I proceeded outside and checked the outdoor condenser unit. I tested all electrical components and ensured everything was within manufacture specifications. Everything passed inspection today. The only thing I noticed was the equipment did not have surge protection. I’m unsure if it was discussed during installation but I recommend a surge protector to help keep equipment from getting damage from any blackouts, brown outs, power outages or lightening strikes. Other than that ever is still working great. Unit is cooling properly on departure.