11 Solar collectors and absorbers being photo thermal and thermal receivers; heat accumulators and stored heat accumulators; hot water boilers, heat pumps, heat exchangers, heating, air-conditioning installations; heat recovery installations, namely, ventilation and heat exchanger systems, hydronic and electrical radiant floor heating systems; wall heating, and panel heating systems for residential and commercial buildings comprised of boilers, pumps, chillers, photovoltaic thermal modules, radiators, valves, pipes, manifolds, solar panels, control panels, and switches all sold as a unit; water heaters, air heaters and air-conditioning equipment, namely, evaporative, desiccant and adsorptive chillers; solar heat collection panels