DJH Mechanical Services Inc.

From its Mt. Vernon base, DJH Mechanical Services Inc. provides HVAC work throughout Westchester County, the NYC Metropolitan Area, and the Greater New York Metropolitan Area. The family-owned company serves residential, commercial, industrial, and institutional clients, with services covering heating, air conditioning, ventilation, and water heating systems.

Its capabilities include high-efficiency equipment installation, HVAC design, geothermal systems, preventive maintenance programs, and emergency HVAC service. DJH also handles hydronic and steam heating design, oil and gas burner systems, boiler upgrades and conversions, and sheet metal work. The company has been operating for 30 years and works with both new equipment installations and ongoing system maintenance. Its owners are Sylvia Hazlehurst and Dennis Hazlehurst.