When it comes to maintaining healthy indoor air, it’s not just about having the right purifier in place. It’s about keeping it operating at peak performance. And that starts with regular maintenance and using the filters designed and tested for your system.
If a Filter Fits, That Doesn’t Mean It Works
Just because a filter fits inside the unit doesn’t mean it meets the performance standards your space relies on. Off-brand or lookalike filters may seem like a cost-effective swap, but they may not be tested for compatibility, capture rate efficiency, or airflow resistance.
Without that validation, you’re taking a gamble:
- Will it capture particles and contaminants as claimed?
- Is it actually H13 True HEPA, or just labeled that way?
- Could it leak particles or even damage your purifier over time?
Fellowes filters are purpose-built to work with Fellowes units. They undergo rigorous 3rd party testing to ensure:
- 99.95% efficiency at capturing particles as small as 0.1 microns
- Correct airflow to avoid overworking the fan or reducing coverage
- Accurately maintains the unit’s energy efficiency and safety
Using off-brand filters may also void your warranty, turning a small short-term saving into a much bigger long-term cost.

Maintenance Matters: Poor Filters, Poor Air
When filters are overdue or underperforming, your purifier can’t do its job. Clogged filters force the unit to work harder, use more energy, and still leave pollutants circulating. You might notice it in the smell of stale, musty air that lingers despite a purifier running in the background.
In worst-case scenarios, overloaded filters can re-release contaminants like bacteria and viruses back into your space.
Routine maintenance and filter changes are essential to:
- Maintain clean, healthy air
- Reduce unnecessary energy use
- Avoid premature system wear
- Protect building occupants and meet indoor air quality goals
Stay on Schedule Without the Guesswork
Whether you’re managing one unit or many, staying on top of filter changes shouldn’t require guesswork. Fellowes purifiers are designed with clear, intuitive maintenance cues so you know when it’s time to replace filters. And for networked models, the Array® Viewpoint dashboard makes it even easier, providing real-time status updates, filter life alerts, and reorder details for all filters and accessories in your system.
No matter the model, Fellowes makes it simple to maintain performance and keep your air clean.
Clean Air Depends on the Details
Reliable air purification isn’t just about the unit; it’s about every component working exactly as designed. And when it comes to filters, close enough isn’t good enough.
Stick to your maintenance plan. Trust only tested, certified filters. And count on the full Fellowes system including hardware, software, and service, to help you deliver clean air with confidence.




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