(1) Manufacturers of natural-gas-fueled water heaters described by section 25-7-1503 (1)(a) shall test each applicable model for sale in Colorado in accordance with the south coast air quality management district protocol 'Nitrogen Oxides Emissions Compliance Testing for Natural Gas-Fired Water Heaters and Small Boilers', as amended.(2) Manufacturers of fan-type central furnaces described by section 25-7-1503 (1)(c) shall test each applicable model for sale in Colorado in accordance with the south coast air quality management district method 100.1 'Instrumental Analyzer Procedures for Continuous Gaseous Emission Sampling', as amended.(3) Unless a product appears in a public database of products maintained by a state or federal agency or by an environmental nonprofit organization, which database requires compliance with emission standards that are as demanding or more demanding than the emission standards described in this part 15, manufacturers of products described in section 25-7-1503 (1) shall demonstrate compliance with this part 15 for each model by either: (a) Affixing a permanent mark, label, or tag to the product and packaging at the time of sale or installation that

-7-1503 (1) shall demonstrate compliance with this part 15 for each model by either: (a) Affixing a permanent mark, label, or tag to the product and packaging at the time of sale or installation that confirms compliance with such emission standards or compliance with equivalent emission standards; or(b) Submitting a certification to the executive director that demonstrates compliance with emission standards required by a state or federal agency, which emission standards are as demanding or more demanding than the emission standards described in this part 15.Added by 2023 Ch. 285,§ 9, eff. 8/7/2023.2023 Ch. 285, was passed without a safety clause. See Colo. Const. art. V, § 1(3).