Why an Air Purifier with a UV Light Might (or might not be) Your Best Bet Against Mold

Air purifiers can definitely help make the air inside your home cleaner. There are all sorts of purifiers out there, and some use special UV light to zap and kill germs and viruses floating around.

Sounds good, right? Well, the Environmental Protection Agency (EPA) says that some of these UV air purifiers put out ozone gas as a side effect. This ozone gas can make it hard to breathe, especially for folks with asthma.

This post explains UV air purifiers and whether they're really the best choice for keeping your home clean. We'll also discuss some HyperHEPA air purifiers, which might be a better option.

How Do UV Air Purifiers Work? 

UV air purifier works a bit like a special air vacuum cleaner that fights germs with ultraviolet (UV) light. Imagine it this way:

Filtering the dirty air: The purifier starts by pulling in the air from your room, which might be filled with things like dust, germs, and even mold spores.

Maybe a filter first: Some purifiers have a regular filter at the beginning. This filter acts like a net, catching bigger things like dust bunnies and dust mites.

The trapping zone! Here's where the best thing happens. The air is exposed to strong UV-C light. This light is like a tiny zap that damages the DNA of germs, including bacteria, viruses, and even mold spores. Damaged DNA means the germs can't function normally, and they die. But it's important to know this zapping takes time a few minutes of direct exposure for the UV light to really do its job.

Final clean-up (sometimes): Not all purifiers have this step, but some might have another filter at the end. This extra filter is like a double-checker, catching anything the UV light might have missed.

Clean air out! Finally, the purifier releases clean, germ-free air back into your room. It's like taking a refreshing breath of fresh air right inside your home.

Now, here's the catch. UV purifiers aren't perfect. They don't remove everything bad from the air, like chemicals. Also, the UV light only works on the air that actually flows through the purifier, not the whole room at once.

That's where HyperHEPA filtration technology comes into play. HyperHEPA filters are like super-fine sieves that trap really tiny particles, including some of the germs that might escape the UV light. Having a HyperHEPA filter helps by giving the UV light more time to trap those tiny germs before they escape.

Are UV air purifiers good? Maybe not.

The EPA says not to buy air purifiers that make ozone gas. This can be some UV air purifiers and other types, too.

Ozone is a gas, kind of like the good kind, that protects us from the sun up high. But down low, ozone can irritate your lungs and make breathing hard, especially for people with asthma. It can make you cough, get a sore throat, and even make asthma worse.

So what should you get instead? The Environmental Protection Agency says air purifiers with HEPA filters are better. And guess what? Top-rated air purifiers with HyperHEPA filters are even better. HyperHEPA filters are like super-fine nets that trap tiny things like mold, pollen, bacteria, and even viruses without producing ozone.

We’ll discuss HyperHEPA filters later in this post. Let’s now discuss the various Pros and Cons of UV air purifiers.  

Pros and Cons of UV air purifiers for mold


  • They work quietly.
  • They might be good at killing germs in the air, but only if you use them with HEPA filters. HEPA filters are like super-fine nets that trap tiny things.


  • They can put out ozone gas, which can irritate your lungs and make it hard to breathe, especially for people with asthma.
  • They don't remove things like chemicals (VOCs) or other gasses from the air. For that, you need an air purifier with a HEPA filter and a carbon filter. The carbon filter helps remove odors and fumes.

How to stay safe with a UV air purifier?

UV air purifiers use light to kill germs in the air, but just like sunlight, this light can be dangerous if it touches your skin or eyes. Since it's strong enough to damage DNA, it can cause harm.

Here's how to stay safe with a UV air purifier:

  • Keep it tight: The purifier should always be completely closed, with no openings where the light can escape.
  • Power down before opening: Whenever you change the filter or clean the purifier, turn it off completely first. Don't open it while it's on!
  • The light stays inside: The UV light should only work inside the purifier. Never take it out and use it somewhere else.

Why should you prefer using HEPA filters?

The EPA suggests using HEPA filters over UV filters in air purifiers. Therefore, we are briefing you on the best one with much more efficiency than standard HEPA filters, the HealthPro Plus air purifier

HealthPro Plus air purifier- The best mold removal air purifier

Are you concerned about allergies or asthma, or simply want cleaner air? Look no further than the HealthPro Plus Air Purifier. This powerful air purifier boasts cutting-edge HyperHEPA filtration technology, removing 99.5% of airborne particles as small as 0.003 microns.

Here's why HyperHEPA is the best:

  • Superior filtration: Unlike regular filters, HyperHEPA captures the tiniest particles, including allergens, bacteria, viruses, and even smoke.
  • Long-lasting performance: HyperHEPA filters last longer than standard filters, saving you money on replacements.
  • Peace of mind: Enjoy cleaner air and breathe easier knowing you're protected from harmful pollutants.

The HealthPro Plus goes beyond HyperHEPA, featuring an activated carbon filter to remove bad odors and volatile organic compounds.  

The Bottom Line

UV light air purifiers can lead to emission of ozone, which is a problem. Consider the benefit of HyperHEPA filtration technology for efficient mold removal. Breathe cleaner air and enjoy peace of mind with the HealthPro Plus Air Purifier.

The number one air cleaning solution for your home.

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