If you have heating under warranty and you installed A/C with another company and Applewood Air said that your warranty is voided it is NOT TRUE!!!. It was winter and our heating stopped working, we also installed A/C with another company. After a guy came and charged money for fixing heating, even through it was under warranty, he said that because i installed A/C with another company the warranty is voided. I was not very happy, so decided to check why warranty is voided. i called the company and they said it is under TARION warranty act that if you modify heating system then it voided the warranty. Called TARION and they said that there is no such RULE. So i went to BBB and after a month all money they charged were refunded. DO NOT BUY ANYTHING FROM THEM!!!