Excellent Contractor. Heater would not fire, had been told by several people it was too old and should be replaced. Mr. Heath responded to our call in the morning and came out that afternoon at exactly the time he told us he would. He found the problem in a few minutes replaced the bad pilot sensor and did some adjustments and had the heater running correctly within an hour of arriving. He made sure it went through an entire cycle of firing up, heating, shutting off when boiler temp was reached, and then refiring when boiler dropped below temp and thermostats were calling for heat. It was extremely well priced and well done. Recommend Mr. Heath to anyone with heater/ plumbing issues. He is very courteous and professional.