




Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The AO SMITH PP-AS20 Product Preservers Anti-Scale System protects your tankless water heater from scale formation without adding chemicals or electricity. As water flows, hard water minerals form inactive scale crystals that pass through the water heater. The system is virtually maintenance-free, with filter changes only needed every two years, easier and less frequent than flushing with cleaning solutions.
Protects tankless water heaters from scale damage using a chemical-free system. Maintenance is minimal, with filter changes every two years.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!


