Moved to a new home September 2018 and the home was equipped with an HVAC system with an air purifier and other air systems that I was unfamiliar with. We purchased a two year service plan, scheduled our first inspection and the techs were awesome enough to show me how to service the air purifier on my own. Since we no longer use wood as a source of heat, and I am very pleased and confident that Frontier will be there to maintain my furnaces I will probably continue with the service contracts. Very satisfied! Curtis F.