maintenance and repair of equipment utilizing oil, gasoline and other petroleum products, namely furnaces, boilers, hot water heaters and like equipment

HVAC contracting services, namely, installation, maintenance and repair of heating, ventilation and cooling systems; plumbing services, namely, installation, maintenance and repair

HVAC contracting services, namely, installation, maintenance and repair of heating, ventilation and cooling systems; plumbing services, namely, installation, maintenance and repair