We bought a Groupon for an A/C inspection / tune up which was supposed to be worth over $ 100,- Technician stated that he did not find any problems.
A few months later we sold the house and the buyer ordered a home inspection. The report from the home inspector (not an Air conditioning specialist ...!) showed that the side panel from the air handler was lose due to several missing screws and the A/C was blowing cold air into the attic.
Our realtor called Autumn Air and of course, their answer was "When our technician inspected the A/C everything was perfect.... " Between the lines: "We went into the attic and removed the screws because we needed them to repair our kid's toys".
Nobody went into the attic between Autumn Air's inspection and the inspection of the home inspector.
Safe your money, these guys are totally unprofessional and unethical.