Tex. Occupations Code § 1302.058: CERTAIN PRODUCTS OR EQUIPMENT.

This chapter does not apply to a person who engages in air conditioning and refrigeration contracting on:

(1) a portable or self-contained ductless air conditioning product that has a cooling capacity of three tons or less;

(2) a portable or self-contained heating product that does not require the forced movement of air outside the heating unit;

(3) environmental air conditioning equipment that is intended for temporary use and is not fixed in place; or

(4) a residential refrigerator, freezer, or ice machine.

Added by Acts 2001, 77th Leg., ch. 1421, Sec. 3, eff. June 1, 2003.