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Westinghouse model & accessory compatibility
Westinghouse Pressure Washer Guide
Westinghouse pressure washers span compact electric machines through 4.2-GPM gas equipment. Match the exact model, rated/max output, pump class and accessory interface before treating any hose, gun or attachment as compatible.
Start with the exact WPX or ePX model
Record the exact model and whether it is electric or gas before comparing accessories.
For replacement hoses and guns, verify both the connection type and the component's working-pressure limit.
Last technical review for this page: August 28, 2026.
Westinghouse spans compact electric, full-size electric and gas pressure washers
The brand name alone does not identify one hose, pump or accessory system. Current Westinghouse listings include compact ePX electrics, higher-output WPX electrics and gas WPX machines. The same accessory can be within range for one family and below the pressure rating of another.
| Example model | Current published output | Pump / drive detail | Compatibility takeaway |
|---|---|---|---|
| ePX3100v | 2100 max PSI / 1.76 max GPM | Compact 120V electric | Small electric accessory path; do not infer the same hose/gun limits as WPX gas machines. |
| WPX3400e | 3400 max PSI / 2.0 max GPM; manual also lists 3000 rated PSI / 1.1 rated GPM | Maintenance-free axial-cam pump | Distinguish max marketing values from rated values when sizing attachments. |
| WPX3400 | 3400 PSI / 2.6 GPM | 212 cc horizontal-shaft gas engine; axial-cam pump | Gas machine with standard QC nozzle system; replacement pump remains machine-specific. |
| WPX4400 | 4400 PSI / 4.2 GPM | 420 cc horizontal-shaft gas engine; maintenance-free triplex brass-head pump | Professional-output class; many 3400/3600-PSI accessories are under-rated. |
Published accessory ratings create real model boundaries
| Accessory | Published interface / limit | Status / implication |
|---|---|---|
| 50-ft Westinghouse hose | M22; up to 3400 PSI | CONDITIONAL for models within rating; not a 4400-PSI hose. |
| Westinghouse short gun | M22-14 mm inlet; 1/4-in QC outlet; up to 3600 PSI | DOCUMENTED INTERFACE for standard M22-14/QC systems within rating. |
| Foam cannon | 1/4-in QC; up to 3600 PSI / 2.5 GPM / 140°F | Machine flow and pressure must remain within the accessory limits. |
| PWSC12 surface cleaner manual | 1/4-in QC; 1400–3000 PSI; 1.1–2.3 GPM; electric only | FOLLOW THE MANUAL where broader product-page wording conflicts. |
For hose-end details, continue to the hose guide, spray-gun guide and surface-cleaner guide.
A useful Westinghouse example: manual beats marketing copy
The current 12-inch surface-cleaner product page uses broad compatibility language, while the current owner manual specifies electric pressure washers only and publishes a narrower pressure/flow window. PressureWasherMatch.com uses the stricter manual limits when the two sources do not align.
This is exactly why accessory fit is not established from a product title or “universal” wording alone.
WPX4400 shopping should follow the machine specification
The WPX4400 is currently a 4400-PSI / 4.2-GPM gas machine with a triplex pump. If that is the capacity class you intend to buy, verify the exact current model and included hose/gun configuration before ordering.
Manufacturer sources
- Westinghouse — current product catalog — Current gas/electric pressure-washer and accessory families.
- Westinghouse — WPX4400 — 4400 PSI, 4.2 GPM, 420 cc horizontal engine and triplex brass-head pump.
- Westinghouse — WPX3400 — 3400 PSI, 2.6 GPM gas-machine reference.
- Westinghouse — WPX3400e — Electric machine and axial-cam pump reference.
- Westinghouse — 50-ft M22 hose — M22 connection and 3400-PSI hose limit.
- Westinghouse — short pressure-washer gun — M22-14 mm inlet, 1/4-in QC outlet and 3600-PSI limit.
- Westinghouse — PWSC12 owner manual — Electric-only 1400–3000 PSI, 1.1–2.3 GPM surface-cleaner limits.
Sources reviewed August 28, 2026. PressureWasherMatch.com is independent and is not affiliated with or endorsed by the manufacturers referenced above.
Frequently asked questions
Are Westinghouse pressure washer accessories universal?
No. Westinghouse publishes specific pressure, flow and connection limits. Match the accessory rating and interface to the exact pressure-washer model, and use the owner manual when its limits are stricter than marketing copy.
What is the difference between Westinghouse WPX and ePX pressure washers?
WPX includes larger wheeled electric and gas pressure-washer families, while ePX includes compact electric models. Pump type, hose system, output and accessory limits vary by model.
Can I use the Westinghouse 50-foot M22 hose on a 4400 PSI machine?
The current Westinghouse 50-foot hose page rates the hose to 3400 PSI. That is below the WPX4400 machine rating, so it should not be treated as a suitable 4400 PSI hose.
Is the Westinghouse 12-inch surface cleaner for gas pressure washers?
The current owner manual for the PWSC12 says it is for electric pressure washers only, 1400 to 3000 PSI and 1.1 to 2.3 GPM. When a product page and manual differ, follow the stricter current manual.
Does the Westinghouse WPX4400 use an axial pump?
Westinghouse currently describes the WPX4400 as using a maintenance-free triplex brass-head pump. Lower-output WPX models and electric models may use axial-cam designs.
How should I choose replacement parts for a Westinghouse pressure washer?
Start with the exact model and its parts list or manual. Then verify pressure, flow, hose and gun interfaces, nozzle connection, pump architecture and any part-number-specific requirements before buying.