Frontier Heating and A/C were referred to me by a friend, who had a furnace put in by them. I had a furnace put in by them last year and they provided excellent service. So, when’s my hot water heater burst this spring they were the first service I thought to contact. They provided immediate assistance, on a Saturday, with an assessment and various alternatives to remedy my dilemma. They put my hot water heater in the next day. They were efficient, professional, and respectful of my property. They did a great job!