We scheduled our service appointment six weeks out and twenty minutes before the tech was supposed to arrive someone from the office called and cancelled. Needless to say we were annoyed-we made great adjustments to be home for them so we were frustrated. HOWEVER, the very next day the tech fixed our boiler quickly, simply and affordably so we were very grateful for the service. If not for the most inconvenient last minute cancel I would've given five starts across the board.