(c) The general assembly and the state auditor shall measure the effectiveness of the exemption in achieving the purposes specified in subsection
(1)(b) of this section based on the number of heat pump systems and heat pump water heaters sold and used in the state. The Colorado energy office shall provide the state auditor with any available information that would assist the state auditor's measurement.
(2) As used in this section, unless the context otherwise requires:
(a) (I) Air-source heat pump system means a system that:
(A) Is certified pursuant to the federal environmental protection agency's energy star program;
(B) Has a variable speed compressor;
(C) Is listed in the air-conditioning, heating, and refrigeration institute directory of certified product performance as a matched system; and
(D) Is installed by a licensed contractor, plumber, or employee of a gas utility in accordance with the national electrical code and the manufacturer's specifications.
(II) Air-source heat pump system may include an electric resistance heating element or a dual fuel system for supplemental heat so long as:
(A) The air-source heat pump is used as the primary source of a building's heat and is designed to supply at least eighty percent of total annual heating for the building;
(B) The system is capable of distributing produced heat to all conditioned areas of the building;
(C) The dual fuel system has a furnace with an annual fuel utilization efficiency rating of ninety percent or higher;
(D) All piping for a split system is installed by technicians certified to the NITC R78 brazing procedure; and
(E) The system is installed by technicians that are trained on the safe handling of flammable refrigerants.
(III) Air-source heat pump system includes mechanical and electrical equipment central to the operation of an air-source heat pump, including an upgraded electrical panel if necessary.
(b) (I) Ground-source heat pump system means a system that:
(A) Is certified to the international organization for standardization's latest standards;
(B) Is installed by a licensed contractor, plumber, or employee of a gas utility in accordance with the national electric code and manufacturer's specifications;
(C) Conforms to all applicable municipal, state, and federal codes, standards, regulations, and certifications;
(D) Has blowers that are variable speed, high-efficiency motors that meet or exceed efficiency levels listed in the national electrical manufacturers association MG1-1993 publication; and
(E) Complies with all state and local drinking water guidelines and regulations and public water system requirements.
(II) Ground-source heat pump system may include a dual fuel system so long as:
(A) The ground-source heat pump is used as the primary source of a building's heat and is designed to supply at least eighty percent of total annual heating for the building;
(B) The system is capable of distributing produced heat to all conditioned areas of the building;
(C) The furnace has an annual fuel utilization efficiency rating of ninety percent or higher;
(D) All piping for a split system is installed by technicians certified to the NITC R78 brazing procedure; and
(E) The system is installed by technicians that are trained on the safe handling of flammable refrigerants.
(III) Ground-source heat pump system includes mechanical and electrical equipment central to the operation of a ground-source heat pump, including an upgraded electrical panel if necessary.
(IV) Ground-source heat pump system may include a heat exchanger for water heating.
(c) Heat pump system means an air-source heat pump system, ground-source heat pump system, water-source heat pump system, combined water-source and air-source heat pump system, or variable refrigerant flow heat pump system.
