Cal Spas Hot Tubs, Spas and Swim Spas for Sale. Cal Spas Escape ES536L on Rescue Renovation. Cal Spas - Yotube Calspas C Series Pacifica hot tub on Yard Attack. Cal Spas was featured on the "Gonclaves Deck" episode of Rescue Renovation, which aired on November 9, 2011. This episode featured a Cal Spas ES536L hot tub as a key component of this backyard makeover. Visit us at www.calspas.com.