We took AHS when we bought our first house. Don't expect shyt from them on major issues, but generally speaking I had no issues with them helping repair some minor stuff in the house.
Ultimately, don't renew at the end of your term. And don't expect them to willingly pay in any reasonable time, without a fight, on major appliances like a fridge or waterheater or god forbid an AC.
They threw some bull**** "your system was not properly installed to up to code" as the reason to not replace our broken AC system. Then they made me spend an hour and 15 minutes on the phone on hold to cancel their service. Never again.