Heating and cooling panels used for indoor heating and cooling purposes; Heating apparatus for defrosting windows of vehicles; Heating apparatus for vehicles; Heating boilers; Heating cushions not for medical purposes; Heating elements; Heating furnaces; Heating inserts for pet beds; Heating installations; Heating pads not for medical purposes; Heating panels used for indoor heating purposes; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Heating units for industrial purposes; Hot water tanks; Hot-air space heating apparatus; Hot-water space heating apparatus; Steam heating apparatus; Steam radiators for heating buildings; Temperature controlled, refrigerated or heated mobile units for the storage and delivery of food products; Thermostatic valves; Thermostatic valves as parts of heating installations

Plumbing; Plumbing and gas and water installation; Plumbing contractor services; Plumbing services