42.4.201    DEFINITIONS

The following definitions apply to this subchapter:

(1) "AFUE" means annual fuel utilization efficiency rating for furnaces and boilers expressed as the ratio of energy output to energy input.

(2) "Building" means an enclosed structure with external walls and a roof that is used for commercial, industrial, or agricultural purposes, or a single or multiple dwelling, including a mobile, manufactured, or modular home. This includes single units within multi-unit complexes such as apartment complexes, condominiums, and commercial complexes.

(3) "Customer" is defined as a retail purchaser or distribution service provider.

(4) "EER" means Energy Efficiency Ratio and is a measure of how efficiently a cooling system will operate when the outdoor temperature is at a specific level (95oF).

(5) "Energy factor" is the efficiency rating for water heaters. A higher percentage indicates higher efficiency.

(6) "ENERGY STAR" is a program of the U.S. Environmental Protection Agency, which identifies high efficiency products and equipment.

(7) "GAMA" means Gas Appliance Manufacturers Association, which is an independent agency for rating space and water heating devices.

(8) "Heat recovery ventilator" is a device or system designed and installed to provide balanced fresh air ventilation for homes and to transfer energy from the outgoing air stream to the incoming air stream.

(9) "HSPF" means heating season performance factor, which is a measure of the heating efficiency of a heat pump system expressed as a ratio of Btu per watt-hour.

(10) "HVI" means Home Ventilating Institute, which is a rating agency for home ventilation products.

(11) "IECC" means the current International Energy Conservation Code, which is the current energy code version adopted by the state of Montana and enforced statewide as adopted by the Montana Department of Labor and Industry.

(12) "Manufactured home" means a home built on a nonremovable steel chassis or frame. Each transportable unit of a manufactured home has a red certification label on the exterior section and is built according to Manufactured Home Construction and Safety Standards (HUD Code).

(13) "Mobile home" is defined in 15-1-101, MCA, and means a form of housing known as "trailers", "housetrailers", or "trailer coaches" exceeding eight feet in width or 45 feet in total length designed to be moved from one place to another by an independent power connected to them, or any trailer, housetrailer, or trailer coach up to eight feet in width or 45 feet in length used as a principal residence. The term does not include any trailer, housetrailer, or trailer coach unless it is a dwelling as defined in this rule.

(14) "Modular home" means a home built in a factory setting in units, transported to the home site, placed on a permanent foundation, and joined.

(15) "NFRC" means National Fenestration Rating Council which is the independent agency that rates windows, doors, and skylights.

(16) "New construction" means construction of, or additions to, buildings, living areas, or attached garages that comply with the established standards of new construction as determined by the building code statutes in Title 50, MCA.

(17) "SEER" means Seasonal Energy Efficiency Ratio and is a measure of equipment the total cooling of a central air conditioner or heat pump (in Btu) during the normal cooling season as compared to the total electric energy input (in watt-hours) consumed during the same period.

(18) "U-factor" refers how well a product prevents heat from escaping. The rate of heat loss is indicated in terms of the U-factor of a window assembly.

History: 15-1-201, 15-32-105, MCA; IMP, 15-32-105, 15-32-109, MCA; NEW, 2004 MAR p. 1965, Eff. 8/20/04; AMD, 2006 MAR p. 357, Eff. 2/10/06; AMD, 2008 MAR p. 387, Eff. 2/29/08; AMD, 2009 MAR p. 459, Eff. 5/1/09; AMD, 2010 MAR p. 1406, Eff. 6/11/10; AMD, 2013 MAR p. 216, Eff. 2/15/13.