I had a pilot assembly on my gas fireplace burning poorly and generating much soot. It had been previously cleaned and adjusted for burn by an alternate certified HVAC specialist. Unsatisfied with the first results, I contacted Mr. Heat Mechanical. The response to have their technician come and inspect and provide appropriate services was for next business day. The technician came on time, replaced the old pilot assembly, verified proper operation of the automated gas valve and was finished cleaning up within 45min. He was very professional.