This is the replacement drain outlet assembly for PolarCool evaporative coolers with a 3/4" drain fitting. It's the part you need when the cooler reservoir won't drain cleanly or the old outlet has cracked, stripped, or started leaking.
Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
This drain outlet assembly is built for black powder coated and stainless steel PolarCool evaporative cooler cabinets. It replaces the interior threaded outlet, washer, and nut as a complete set, so you're not chasing down individual hardware pieces to get a watertight seal. Confirm your cabinet finish and fan size against the compatibility list below before you order, since drain fitting sizes vary across the PolarCool lineup.
Critical Fitment & Requirements
- Drain outlet size: 3/4" — matches the reservoir drain opening on compatible units.
- Assembly includes: threaded drain outlet, washer, and plastic nut.
- Fits black powder coated and stainless steel model cabinets.
- Compatible with 18" fan, 24" fan, 36" fan, 36" fan Single Speed, and 48" fan models.
- NOT compatible with all 36" Pro or Zone models — verify your existing drain assembly before ordering.
- Threaded end accepts a cap or standard garden hose fitting.
Overtightening the plastic nut on a drain outlet is a common source of cracked threads and slow reservoir leaks that show up weeks later as water staining under the cabinet. Snug the nut down by hand until the washer compresses evenly, then give it a light quarter-turn with pliers — no more. Test the seal by running water into the reservoir and checking the outlet for weeping before you close the unit back up. This matches standard evaporative cooler service practice: verify drain integrity under load, not just visually, before returning the unit to normal operation.
Key Benefits
- Complete assembly — outlet, washer, and nut included, no separate hardware sourcing needed.
- Direct fit for black powder coated and stainless steel cabinet drains.
- Threaded design supports both cap and garden hose drainage setups.
- Straightforward swap for the existing outlet, minimizing service downtime.
- Genuine PolarCool replacement part built to match OEM drain dimensions.
| Spec | Value | Unit |
|---|---|---|
| Type | Drain Outlet Assembly | — |
| Drain Outlet Size | 3/4 | inch |
| Assembly Contents | Threaded outlet, washer, plastic nut | — |
| Compatible Cabinet Finish | Black powder coated, stainless steel | — |
| Related Drain Cap SKU | 6422-6022 | — |
| Alternative Drain Assembly (2") | 0006-0722 | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: PolarCool black powder coated and stainless steel evaporative coolers, including 18" fan, 24" fan, 36" fan, 36" fan Single Speed, and 48" fan models.
- Does NOT fit: all 36" Pro or Zone models — confirm your specific drain assembly before purchase.
- Compatible drain cap: SKU 6422-6022 (sold separately).
- Alternative option: if your unit uses a 2" drain opening instead of 3/4", use part number 0006-0722 instead.
| Category | Detail |
|---|---|
| Installation Safety | Disconnect power to the cooler before removing or installing the drain assembly. |
| Leak Prevention | Ensure washer and nut connections are tight before reconnecting power and testing drainage. |
| Material | Constructed for use in wet, outdoor-exposed cabinet environments. |
FAQ
Will this drain outlet fit my 36" Pro or Zone model cooler?
Not always. This 3/4" drain outlet is not compatible with all 36" Pro or Zone models. Verify which drain assembly your unit uses before purchasing.
What size is this drain outlet?
It is a 3/4" drain outlet assembly, sized for the drain opening on the bottom of the fan reservoir.
What's included in the assembly?
The assembly includes the threaded drain outlet, a washer, and a plastic nut for installation.
Can I attach a garden hose to this drain outlet?
Yes. The threaded end accepts a cap or a garden hose fitting for directed drainage.
Is there a different size drain assembly available?
Yes. A 2" drain assembly is available separately under part number 0006-0722, and a drain cap is available under SKU 6422-6022.
Warranty & Registration
[NEEDS VERIFICATION] — manufacturer warranty terms for this part were not included in the provided data. Refer to the "Resources (System Manuals and Warranty)" Tab above for official warranty documentation from PolarCool. Ask us before you order if you need warranty terms confirmed for your specific cooler model.
