Airplus of California came and inspected the furnace and air conditioning unit outside. I got in touch with them because they had installed it in the house. I had another company come and do regular maintenance and they said a couple parts were going bad and needed to be replaced, so I called Airplus of California. They said the parts seem OK, and just needed some cleaning and tightening. The technician Joey very courteous, very professional, explained everything thoroughly and let me know what was going on. I had a good experience.