For the Cleanest Spa Water - Use only ThermoSpas Filters
• Exactly sized to fit your hot tub - no gaps!
• Works best with your hot tub's filtration system
• Traps the smallest particles
• Reliable US made and tested by our design teams
• US Based Customer Care with experts to assist with any questions
White Filters - meets or exceeds industry standards
Our center cores are molded and provide for a
free flow of water through them. They achieve
approximately 20% better filtration efficiency, with
less wear & tear on the spa pump, and less energy
The end caps of the cartridge are made with
proprietary antimicrobial, crack-resistant
polyurethane, resistant to chlorine and bromine.
The filter material we use will not break down, and
contains nothing that may cause a foam buildup.
View all White filters