UVC Max 25 vs. OXY 4™: Which Whole House Air Purifier is Right for Your Home?

By Duct Professor Heating & Cooling - May 16, 2025

When it comes to indoor air quality, investing in a reliable whole-house air purifier can make a major difference in your family’s health and comfort. Two popular options we often recommend at Duct Professor are the UVC Max 25 110V Whole House Air Purifier and the OXY 4™ Air Purifier. While both are effective, they offer different technologies and benefits.

In this blog, we break down the key differences between these two units to help you choose the right one for your HVAC system and indoor environment.

1. Technology Used

UVC Max 25:

This purifier uses UVC light technology to target and neutralize airborne bacteria, viruses, mold spores, and other harmful microorganisms. It emits ultraviolet light at a wavelength of 254 nm, which removes airborne microorganisms, rendering them harmless.

OXY 4™:

The OXY 4™ Air Purifier combines UVC light with activated oxygen (ozone) technology. This powerful combination helps reduce or eliminate:

• Mold and mold spores
• Viruses and bacteria
• Unpleasant odors(from pets, smoke, cooking, etc.)
• Common household VOCs (Volatile Organic Compounds) that off-gas from unnatural materials such as paints, cleaners, furniture, and carpeting.

By producing a controlled amount of ozone, OXY 4™ breaks down these chemical pollutants at the molecular level, leaving your indoor air cleaner and fresher.

2. Odor Control Capability

UVC Max 25:

While great at killing germs, this unit does not directly address odors or chemical contaminants in the air.

OXY 4™:

Thanks to the ozone-generating capability, the OXY 4™ is highly effective in controlling persistent odors from pets, cooking, smoke, and mold.

3. Safety and Ozone Emission

UVC Max 25:

This is an ozone-free air purifier, making it ideal for homes with children, elderly individuals, or anyone with respiratory sensitivities.

OXY 4™:

This unit produces a controlled amount of ozone for odor removal and VOC reduction. While it's effective, ozone should be monitored and used in well-ventilated environments or under professional guidance.

4. Installation and Compatibility

Both units are designed to be installed directly into your home’s HVAC ductwork and work continuously as air circulates through the system. Both are compatible with most forced-air heating and cooling systems.

5. Maintenance

UVC Max 25:

Requires periodic replacement of the UVC bulb (usually once a year).

OXY 4™:

Also requires annual maintenance, including bulb and ozone cell inspection or replacement.

6. Ideal Use Cases

UVC Max 25:

Best for families focused on germ control without any added chemicals. Ideal for those with allergies or asthma.

OXY 4™:

Great for households needing strong odor elimination and VOC reduction, such as homes with pets, smokers, or recent renovations.

Which One Should You Choose?

• Choose UVC Max 25 if your main concern is sanitizing the air from biological contaminants like bacteria, mold, and viruses, especially in households with sensitive individuals.
• Choose OXY 4™ if you’re also battling unwanted odors and chemical pollutants in addition to germs.

Need Help Deciding?

At Duct Professor, we specialize in customizing indoor air quality solutions based on your home’s needs. If you're still unsure which system is right for you, we’d be happy to help.