94 STAT. 720
PUBLIC LAW 96-294—JUNE 30, 1980 (3) the term "multifamily residential building" means any building used as a residence which contains 5 or more dwelling units and has a system for heating or cooling, or both; (4) the term "commercial building" means any building other than a residential, or multifamily residential, building which is used primarily to carry on a business (including any nonprofit business) and is not used primarily for the manufacture or production of raw materials, products, or agricultural commodities; (5) the term "agricultural building" means any building used exclusively in connection with the production, harvesting, storage, or drying of agricultural commodities; (6) the term "residential energy conserving improvements" means, with respect to a residential, or multifamily residential, building— (A) caulking and weatherstripping; (B) furnace efficiency modifications including— (i) replacement burners, furnaces, boilers, or any combination thereof which, as determined by the Board, substantially increases the energy efficiency of the heating system; (ii) devices for modifying flue openings which will increase the energy efficiency of the heating system; and (iii) electrical or mechanical furnace ignition systems which replace standing gas pilot lights; (C) clock thermostats; (D) ceiling, attic, wall, floor, and duct insulation; (E) water heater insulation; (F) storm windows and doors, multiglazed windows and doors, heat-absorbing or heat-reflecting window and door materials; (G) devices associated with load management techniques; (H) such other improvements (not including solar energy systems) as the Board by rule identifies for purposes of this subtitle; and (I) planning and technical services, any residential energy audit, and any conversion from master utility meters to individual utility meters, which are directly related to and undertaken with the installation of any of the items specified in subparagraphs (B) through (H); (7) the term "commercial energy conserving improvements" means the installation or the modification of an installation which is designed primarily to reduce the consumption of petroleum, natural gas, or electrical power in a commercial or agricultural building, including— (A) caulking and weatherstripping; (B) the insulation of the building structure and any systems within the building; (C) storm windows and doors, multiglazed windows and doors, heat-absorbing or heat-reflecting window and door systems, glazing, reductions in glass area, and other window and door system modifications; (D) automatic energy control systems; (E) equipment, associated with automatic energy control systems, which is required to operate variable steam, hydraulic, and ventilating systems;
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