# Transportation (GTR)

## Title 22. Vehicle Laws -- Equipment of Vehicles

### Subtitle 4. Other Equipment

#### Section 22-410

(a)

  (1) In this section the following words have the meanings indicated.

  (2) "Air-conditioning equipment" means mechanical vapor compression refrigeration equipment used to cool the driver's or passenger compartment of any motor vehicle.

  (3) "Ozone-depleting refrigerant" means a refrigerant used in air-conditioning equipment that contains a substance identified in 42 U.S.C. Sec. 7671a(a) or (b).

(b) Air-conditioning equipment shall be manufactured, installed, and maintained with due regard for the safety of the occupants of the vehicle and the public.

(c) In a motor vehicle of model year 2011, or any model year thereafter, the air-conditioning equipment may contain only a refrigerant that:

  (1) Is not an ozone-depleting refrigerant; or

  (2) Is included in the list published by the United States Environmental Protection Agency as a safe alternative to chlorofluorocarbon-12, pursuant to 42 U.S.C. Sec. 7671k(c).

(d) The Administrator, in consultation with the Department of the Environment, may adopt and enforce safety requirements, regulations, and specifications for air-conditioning equipment consistent with the requirements of this section.

(e) A person may not have for sale, offer for sale, sell, or equip any motor vehicle, of model year 2011 or thereafter, with any air-conditioning equipment unless the air-conditioning equipment complies with the requirements of this section.

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Md. Code Ann., Transp. (as displayed at mgaleg.maryland.gov, October 16, 2026)