(1) Except as described in subsection (2) of this section and as modified by rules promulgated by the executive director or the commission pursuant to section 25-7-1506, this part 15 applies to the following new products:
(a) Water heaters with a rated heat input capacity of two million BTUs per hour or less; and
(b) Fan-type central furnaces that:
(I) Require either single-phase or three-phase electric supply;
(II) Are used for comfort heating; and
(III) Have a rated heat input capacity of less than one hundred seventy-five thousand BTUs per hour and, in the case of combination heating and cooling units, a cooling rate of less than sixty-five thousand BTUs per hour.
(2) This part 15 does not apply to:
(a) Products held in inventory in Colorado on the effective date of the applicable standard;
(b) Products that were installed in manufactured homes at the time of construction;
(c) Products designed expressly for installation and use in recreational vehicles;
(d) Products that do not burn fossil fuels; or
(e) (I) Until January 1, 2031:
(A) Products fueled by propane; and
(B) Products designed and listed exclusively for installation in a manufactured home and installed as a replacement in a manufactured home.
(II) This subsection (2)(e) is repealed, effective December 31, 2031.
Source: L. 2023: Entire part added, (HB 23-1161), ch. 285, p. 1713, § 9, effective August 7. L. 2026: (2)(c) and (2)(d) amended and (2)(e) added, (SB 26-002), ch. 305, p. 1750, § 2, effective August 12.