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Quarterly Maintenance Package



Everything you need for 3 months of water purification.

  • Three RENU certified filters
  • Two Earth-friendly oil and dirt buoy
  • One Chlorine-Free, Eco-friendly sanitizer stick


Instructions for use & Supplemental Video

Filter Cartridges

  • Swap out every month

Spa Dirt & Oil Remover Buoy

  • Removes the water foam and oil slicks from the surface of your Cryo Plunge Tank without adding chemicals!
  • Let the buoy float in your Cryo Plunge Tank
  • Leave in or remove while you’re using your Cryo Plunge Tank
  • Toss and replace at 6 weeks

Spa Sanitizer Mineral Stick

  • Chlorine eco-friendly way to keep your Cryo Plunge Tank free from harmful bacteria and reduces the need for harsh chemicals; less skin irritation
  • Allow the sanitizer stick to stay on the bottom for the duration of 3 months.

Video Instructions


Customer Reviews

Based on 12 reviews
John Beard (Altamonte Springs, US)
Renu Therapy quarterly maintenance great

You don’t have to think. They just send it. I use my reminders app to schedule my replacements. Only complaint is the mailing time.


So sorry you haven't been receiving your packages promptly. I will look into it to see why so that I can make sure it's not a problem in the future. However, for the hassle, I have processed a full refund for your last package. Hope that helps a little.


Jeff Allen (Timnath, US)

Quarterly Maintenance Package

Katie Kaiser (Novato, US)
super helpful

when i receive the box i write dates on each item with a sticky note for when i need to swap it out. love the convenience of having it all on hand when i need it to keep my Renu clean and working perfectly!

Scott Hutcheon (Laguna Beach, US)
Cold Plunge Success

We love our cold plunge unit from Renu. Our whole family uses it everyday. The maintenance package is key to the success of the cold plunge. Keeping it clean with ease is really important for us and this package is great.

Bill Wolfe (Ashburn, US)

Like clockwork…delivered on time..just as promised!

James Axtell (Denton, US)

Unit working very well! Thank you for an incredible product

Barry Crum (Pikeville, US)

Awesome product . Love it

Peter Kimball (Los Angeles, US)
Game changer.

Fantastic product. We use it every day.

Evan Halquist (Los Angeles, US)
Fantastic product and customer service

When I had an small issue with my tank,Steve and the team at Renu were on top of it. Cold not have asked for a better product or experience!

Ford Bohannon (Marietta, US)
Quarterly Maintenance Package

I recently had to replace my first water filter… priced everything out on line and locally in Atlanta. Renu has the best pricing… even w shipping added. I really appreciate these guys… their attention to detail and customer service are second to none!!