Tsunami Desiccant Tower Replacement for Pure 7, 10, 20, 30 & Ultra Series Dryers 21999-0349
Factory replacement desiccant tower (purple) for Tsunami Pure-7, Pure-10, Pure-20, Pure-30, and Ultra Series regenerative air dryers. The molecular sieve desiccant inside each tower is what pulls water vapor out of your compressed air under pressure — and after years of cycling, its capacity fades. Tsunami recommends replacing desiccant towers every 3–5 years depending on usage.
Worth knowing:
- Direct-fit tower for Pure-7/10/20/30 and Ultra Series dryers — swap takes basic hand tools
- Filled with molecular sieve desiccant for dew points down to -80°F in Ultra systems
- Don’t wait on the color indicator: most moisture indicators don’t begin changing color until about 20% relative humidity — replace on schedule, not on color
- Made in Monticello, Minnesota by ISO 9001:2015-certified Suburban Manufacturing
The tower replacement walk-through video and the dryer installation manuals are on this page. Multi-tower dryers should have all towers replaced at the same time so both drying and regeneration sides age together.
