(1) For units intended for nonresidential use, implied warranties of quality:
(a) May be excluded or modified by written agreement of the parties; and
(b) Are excluded by written expression of disclaimer, such as "as is," "with all faults," or other language which in common understanding calls the buyer's attention to the exclusion of warranties.
(2) For units intended for residential use, no disclaimer of implied warranties of quality is effective, except that a declarant or dealer may disclaim liability in writing, in type that is boldfaced, capitalized, underlined, or otherwise set out from surrounding material so as to be conspicuous, and separately signed by the purchaser, for a specified defect or specified failure to comply with applicable law, if: (a) The declarant or dealer knows or has reason to know that the specific defect or failure exists at the time of disclosure; (b) the disclaimer specifically describes the defect or failure; and (c) the disclaimer includes a statement as to the effect of the defect or failure.
(3) A declarant or dealer may offer an express written warranty of quality only if the express written warranty does not reduce protections provided to the purchaser by the implied warranty set forth in RCW
64.34.445.