5 Best Westinghouse Air Purifiers of 2025

This ultra-portable powerhouse redefines personal air purification with its patented NCCO technology and True H13 HEPA filtration, delivering hospital-grade air cleaning in a device you can slip into a carry-on. What sets the Westinghouse 1804 apart is its ability to not just trap but actively destroy bacteria, viruses, and VOCs using nano-confined catalytic oxidation—converting pollutants into harmless water vapor and CO₂. For travelers worried about airplane air or sketchy hotel ventilation, this is a game-changer, offering real sanitization where most mini purifiers only filter.

In real-world use, the 1804 shines in confined spaces like car cabins, airplane seats, and hotel rooms. With a 2-pound design and an 8-hour battery life, it’s built for mobility without sacrificing performance. The 3-stage purification system—oxygen generator, HEPA filter, and NCCO reactor—ensures both particulate and gaseous pollutants are neutralized, not just collected. While it won’t clean a living room, it dominates in personal zones, removing 99.72% of smoke particles and 99.99% of airborne germs. However, its compact size means it’s not meant for continuous whole-room use—think of it as a mobile shield, not a fortress.

Compared to the bulkier Westinghouse 1701, the 1804 is the clear winner for jet-setters who need medical-grade air on the move. It trades room coverage for unmatched portability and active sanitization, making it far more effective than passive filter-based travel purifiers. Ideal for frequent flyers, road-trippers, and allergy sufferers on the go, it delivers clinical-level air cleaning where you need it most. While the WH50 offers smart features and larger coverage, the 1804 outperforms in personal, mobile protection at a fraction of the size and cost.

The Westinghouse 1701 strikes a perfect balance between performance and quiet efficiency, making it a standout mid-range air purifier for small to medium rooms. Its 4-stage filtration system—pre-filter, True H13 HEPA, activated carbon, and patented NCCO technology—doesn’t just capture pollutants; it chemically breaks down VOCs, odors, and microbes into harmless byproducts. For households battling pet dander, cooking smells, or seasonal allergies, this unit delivers clinical-grade air cleaning with the peace and quiet of a bedroom-friendly 37dB operation.

In testing, the 1701 consistently cleaned air in spaces up to 300 sq. ft., making it ideal for bedrooms, home offices, or nurseries. The NCCO reactor actively neutralizes secondhand smoke and kitchen odors far more effectively than carbon filters alone, while the HEPA filter traps 99.97% of particles as small as 0.3 microns. It handled dust and pollen with ease during high-allergy seasons, and the CARB and cETL certifications confirm it’s safe, with zero harmful ozone emissions. That said, it lacks smart features or app control, and the filter replacement alert could be more precise.

When compared to the larger 1702, the 1701 covers less area but runs just as quietly and costs significantly less—making it the smarter pick for compact living spaces. It’s not as advanced as the WH50, but it avoids over-engineering for users who want reliable, no-frills purification without noise or complexity. Best suited for urban apartments, pet owners, and allergy-prone families, it offers hospital-proven NCCO tech at a realistic price. While the WH50 brings Wi-Fi and bigger coverage, the 1701 wins on value, simplicity, and bedroom-friendly silence.

Don’t let the identical name fool you—this B087V6CBT4 variant of the 1804 is the budget-savvy sibling that brings medical-grade NCCO purification to travelers without the premium price tag. It leverages the same patented NCCO reactor and True HEPA filtration as its counterparts, actively breaking down viruses, smoke, and odors into harmless compounds—making it one of the few portable purifiers that truly sanitize, not just filter. For under $80, it’s an unbeatable deal for anyone seeking clinical air protection on a budget.

Powered by a lightweight 2-pound chassis and an 8-hour battery, it’s designed for on-the-go defense in planes, trains, and hotel rooms. The 3-stage system—oxygen generator, HEPA filter, and NCCO reactor—ensures both airborne pathogens and gaseous pollutants are neutralized, a major upgrade over passive HEPA-only travel units. In real use, it cleared stale hotel air and car cabin odors within minutes, and its leather-wrapped strap makes it easy to hang from a seat or bag. However, the filter life is shorter than home models, and it lacks advanced indicators or smart features.

Against the WH50 or 1702, this model sacrifices smart controls and room coverage—but that’s not the point. It’s built for affordable, personal air security, and it delivers where it counts. For budget-conscious travelers, students, or commuters who still want hospital-proven NCCO technology, this is the most cost-effective personal purifier in the Westinghouse lineup. While the WH50 offers app control and broader reach, this 1804 model proves you don’t need bells and whistles to breathe clean, sanitized air anywhere.

The Westinghouse 1702 is a heavy-duty performer engineered for large rooms, making it the go-to choice for living rooms, open-plan spaces, and multi-pet households. With 4-stage medical-grade filtration and patented NCCO technology, it doesn’t just trap pollutants—it destroys viruses, bacteria, and VOCs at the molecular level, offering a level of air sanitization rare in home units. Covering up to 500 sq. ft., it outpaces most mid-range purifiers and delivers 99.95% pathogen reduction in real-world environments.

In practice, the 1702 excelled at clearing wildfire smoke, pet odors, and cooking fumes across open-concept areas. The True H13 HEPA filter captured fine dust and pollen, while the NCCO reactor broke down lingering smells from litter boxes and takeout—something carbon filters struggle with. Running at a near-silent 37dB, it’s ideal for living rooms or large bedrooms, and its safety certifications (CARB, cETL) ensure zero ozone risk. However, its size makes it less flexible for small spaces, and it lacks smart connectivity.

Compared to the 1701, the 1702 offers double the coverage with the same quiet operation and NCCO power—making it worth the upgrade for larger homes. While the WH50 adds app control, the 1702 matches its core purification performance without the tech markup. Best for families, pet owners, and urban dwellers in spacious homes, it delivers hospital-grade air cleaning where it’s needed most. Against the WH50, it may lack Wi-Fi, but it matches its sanitization power at a lower price.

The Westinghouse WH50 is the flagship smart purifier that combines hospital-proven NCCO technology with modern convenience, making it the most advanced unit in the lineup. With 4-stage medical-grade filtration and Wi-Fi app control, it doesn’t just clean the air—it learns your habits, monitors air quality, and adjusts in real time. The NCCO reactor actively destroys 99.9% of viruses and germs, outperforming traditional HEPA purifiers that merely trap contaminants. For tech-savvy users who want total air control, this is the ultimate all-in-one solution.

In real-world testing, the WH50 handled wildfire smoke, pet dander, and VOCs with ease across 500+ sq. ft. The app-based monitoring lets you turn it on remotely, check filter life, and receive air quality alerts—ideal for parents or allergy sufferers. The washable pre-filter and HEPA combo reduce long-term costs, while third-party testing confirms its sanitization claims. It’s slightly louder on turbo mode, but the auto mode keeps noise minimal. While it’s not as portable as the 1804, its smart automation and broad coverage make it perfect for modern homes.

Against the 1702, the WH50 offers identical room coverage and NCCO power but adds smart control and real-time feedback—justifying its premium. It’s pricier than the 1701 or 1804, but for those who want set-and-forget purification with clinical results, it’s unmatched. Ideal for smart homes, allergy-heavy households, and urban environments, it brings hospital-grade air cleaning into the connected age. While the 1702 matches its power, the WH50 surpasses it in convenience and intelligence.