(2) A person may install a new product not meeting efficiency standards specified in subsection (1) of this section if the product is:
(a) Installed in a mobile or manufactured home at the time of construction; or
(b) Designed expressly for installation and use in recreational vehicles. [2005 c.437 §6; 2005 c.437 §7; 2007 c.649 §4; 2013 c.418 §§7,8; 2021 c.108 §4]
Note: See note under 469.229.