NOVENTA

heat exchangers, not being parts of machines; heating and cooling systems comprised of heating units and cooling units for residential and commercial buildings; wastewater treatment apparatus for use in connection with recovering energy from wastewater for the purpose of heating and cooling residential and commercial developments; purification installations for sewage; parts and fittings for refrigeration, air-conditioning and heating systems, namely, pipes, filters, vents, tubes, boilers, manifolds, thermostats and wires