Wash. Rev. Code § 19.260.050
(1) The following products, if manufactured on or after January 1, 2010, may not be sold or offered in the state unless the efficiency of the new product meets or exceeds the efficiency standards set forth in RCW 19.260.040:
(2) The following products, if manufactured on or after January 1, 2010, may not be installed for compensation in the state on or after January 1, 2011, unless the efficiency of the new product meets or exceeds the efficiency standards set forth in RCW 19.260.040:
(3) The following products, if manufactured on or after January 1, 2021, may not be sold or offered for sale, lease, or rent in the state unless the efficiency of the new product meets or exceeds the efficiency standards set forth in RCW 19.260.040:
(4) The following products, if manufactured on or after January 1, 2024, may not be sold or offered for sale, lease, or rent in the state unless the efficiency of the new product meets or exceeds the efficiency standards set forth in RCW 19.260.040:
(5) Standards for the following products expire January 1, 2020:
[ 2022 c 19 s 5; 2019 c 286 s 6; 2009 c 501 s 4; 2006 c 194 s 4; 2005 c 298 s 5.]