Tankless install: Install customer supplied rheem tankless, drain / remove existing equipment mount on wall re plumb hot and cold to new equipment. Power pulled: Cut 2 squares in drywall at power panel install 3 new 40 amp breakers pull wire to tankless location. No warranty on customer supplied equipment. 1 year warranty on parts and labor. Couldn’t find 3 rd breaker, Ordered breaker arrival Friday called customer customer is busy Friday please schedule on Monday the 20 th. Arrived on site installed customer supplied electrical tankless, pulled 3 strains of 8 wire on 3 double pull 40 amp breakers. Tested equipment up to code.