Colorado Revised Statutes Title 9. Safety Industrial and Commercial § 9-4-104. Exemptions

(a) Boilers located in private residences;

(b) Boilers located in apartment houses having less than six family units;

(c) Any city or town where boiler inspectors of comparable capability to state boiler inspectors are employed, where adequate records of boiler inspections are maintained, and where there is in effect a boiler inspection code comparable to that of the state pursuant to the ordinances of said city or town. A city or town not now providing such service may, upon application to the director of the division of oil and public safety with submission of proof of such comparability, be authorized by the director of the division of oil and public safety to establish a boiler inspection system that is exempt from the provisions of this article.

(d) Service and domestic-type water heaters;

(e) Boilers owned or operated by the federal government;

(f) Locomotive boilers of carriers subject to the federal locomotive inspection law.