We purchased our furnace, air cleaner & A/C over 10 years ago from Mark. The whole sales and installation process was professional and seamless. During the recent heat warning, our A/C stopped working, and we didn’t hesitate to call Mark. He is knowledgeable and diagnosed the problem by asking us a series of questions. He apologized that they were fully booked due to the heat wave but would try to squeeze us in. Despite the chaotic day, both he and the technician kindly kept us informed about their schedule and much to our relief, the repair was done the same day. The repair was thorough, not rushed, and properly tested. When it’s time to upgrade, we can trust Mark and High Life to guide us once again.