What it delivers
The Rinnai 804000074 Condensate Neutralizer is a condensate neutralizer.
A neutralizer raises the pH of a condensing heater's acidic condensate before it reaches the drain; the media inside is replaced as it's used up.
The cartridge sits on the condensate line between the heater and the drain; replace or refill the media when it has mostly dissolved.
Also on the listing: features: Condensate Neutralization; material: Stainless Steel; model: 804000074; warranty: Limited lifetime warranty.
The listing gives dimensions of 1 in (W) x 1 in (H) and neutralizer kit in the box.
Warranty, per the listing: Limited lifetime warranty.
Right unit for this house?
Install it when
- Installing or servicing a tankless heater
- Matching a part named in the manual
Look at another unit when
- Heaters it doesn't name
Strengths and trade-offs
Strengths
- Condensate neutralizer
Trade-offs
- Fit depends on the heater model
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | 804000074 | Retailer |
|---|---|---|
| Dimensions (seller) | 1"W x 1"H | Retailer |
| Features (seller) | Condensate Neutralization | Retailer |
| Material | Stainless Steel | Retailer |
| Warranty | Limited lifetime warranty | Retailer |
Rival units at this flow
More venting and install parts rated for similar demand
Full venting and install parts spec grid · Every Rinnai unit in the catalog
Final verdict
A practical condensate neutralizer for installing or servicing a tankless heater.
Buy this unit
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure



