Air Purifiers
Why Indoor Air Quality Matters
Most people think of pollution as an outdoor problem, but the air inside your home, workshop, garage, or RV can tell a very different story. The Environmental Protection Agency has noted that indoor air pollution levels can be significantly higher than outdoor air — and since the average person spends the vast majority of their time indoors, what you breathe inside matters just as much as what's outside. Dust, pollen, mold spores, pet dander, volatile organic compounds (VOCs), bacteria, and viruses can all accumulate in enclosed spaces, especially when forced-air systems continuously recycle the same air without adequate treatment.
Air purifiers are designed to break that cycle. Whether mounted in-duct as part of an HVAC system or used as standalone portable units, these devices work to actively reduce contaminants — not just filter them passively. The result is fresher, cleaner air that can ease allergy symptoms, reduce odors, and support overall respiratory health in any environment.
Types of Air Purifiers
Modern air purifiers use a variety of technologies, and many units combine several approaches for layered protection:
- HEPA Filtration – High-efficiency particulate air filters capture microscopic particles, including pollen, dust, and mold spores, down to 0.3 microns or smaller.
- UV-C Light – Ultraviolet-C lamps neutralize biological contaminants like bacteria, viruses, and mold by disrupting their cellular structure.
- Activated Carbon – Carbon-based media absorbs odors, smoke, and chemical gases (VOCs), making it ideal for kitchens, garages, and workshops.
- Photocatalytic Oxidation (PCO) – Uses UV light and a catalyst to convert harmful gases and VOCs into inert compounds like water vapor and CO₂.
- Ionization & Plasma Technology – Advanced systems release ions or hydrogen peroxide molecules that proactively treat the air throughout a conditioned space — not just at the unit itself.
- In-Duct Systems – Installed directly into existing HVAC ductwork, these whole-home purifiers treat air as it circulates throughout an entire building for continuous, comprehensive coverage.
Key Considerations When Shopping
Before selecting an air purifier, consider the size of the space you want to treat. Room coverage is typically expressed in square footage or Clean Air Delivery Rate (CADR). For whole-home protection, an in-duct system is often the most efficient solution, while portable units are better suited for targeted room-by-room use. Also look for units certified by CARB (California Air Resources Board) for ozone compliance, and check for ENERGY STAR certification if efficiency is a priority.
Top Air Purifier Brands
RGF Environmental Group is a globally recognized leader in indoor air quality technology. The brand is known for its patented REME® and PHI-CELL® technologies, which produce low-level airborne hydrogen peroxide to actively reduce bacteria, viruses, mold, odors, and allergens throughout conditioned spaces — going well beyond what traditional passive filters can achieve. Their flagship REME HALO® and HALO-LED® in-duct purifiers are trusted in homes, schools, hospitals, and commercial buildings worldwide.
Field Controls brings over 95 years of air treatment expertise to the table. Their portable TRIO line combines H13 HEPA filtration, dual UV-C lamps, photocatalytic oxidation (PCO), and activated carbon into multi-stage systems capable of cleaning large spaces quickly — all while meeting strict CARB ozone-free requirements. Field Controls products are backed by independent laboratory testing and recommendations aligned with CDC, WHO, and ASHRAE guidelines.
Coleman extends its trusted climate-control heritage into air purification with solutions designed specifically for RV and mobile applications. The Coleman Mach air purifier uses compact ion-generating technology to eliminate bacteria, airborne mold, and virus spores without producing ozone — integrating seamlessly with Coleman Mach air conditioning systems for continuous, automatic purification on the road.