Thursday, May 23, 2024

Can You Kill Mold With Uv Light

How To Prevent Mold With Ultraviolet Light Fixtures

Get UV Lights to Eliminate Viruses

Prevent mold and mildew from building up in your home and causing assorted health problems through use of ultraviolet light fixtures. Ultraviolet light is an excellent method of dealing with mold and mildew if general cleaning is not enough. These types of light fixtures are especially recommended for high-humidity areas more prone to mold and mildew growth.

Clean The Humidifier Regularly

Regular cleaning of the humidifier is a simple process that should take less than 30 minutes, unless the unit is seriously attacked by mold. For the best results, proceed as follows;

  • Unplug the humidifier: Never clean a humidifier thats plugged into the electrical outlet because you risk electrocution. Once youve unplugged it, take the unit outside where you can work in a well-ventilated area. Then, put on rubber gloves to protect your hands.
  • Empty the water reservoir: Pour out the water in the water tank. Also, check if the drain pan has any water and empty it too.
  • Disassemble the unit: In most cases, you should remove the water tank and filters with ease. Ensure to dismantle any other removable parts so they can be washed separately.
  • Soak the reservoir: Mix a solution containing equal parts of chlorine bleach and water and pour the solution into the reservoir. If the tank is not removable, take caution not to get any water inside the motor. Use a clean toothbrush to scrub away film and mineral buildup. Then, let the solution sit in the reservoir for 10 to 15 minutes.
  • Allow it to dry: Allow the parts to air-dry in the sun. You can wipe all the surfaces with a soft, clean cloth first or just set them in an open place in the sun to dry.;

Does Uv Light Kill Mold Lets Find Out

There is mold everywhere in your home, at your workplace environment, a trace on your clothing theyre literally everywhere; as long as there are moisture and oxygen in an area, youd be sure to find mold.

The presence of mold in your home can be unsightly and smelly; ruining your furniture, clothing, wall drapers, and paint. It affects the structural integrity of buildings and the health of those inside adversely.

So, the question right now is not whether it has adverse effects, but rather how to prevent, manage, and or eliminate them.

Recommended Reading: How To Tell If You Have Toxic Mold

Does Uv Light Actually Kill Mold & Bacteria


There is plenty of research to prove UV light kills mold and bacteria. Places like hospitals rely heavily on UV light in their HVAC systems to prevent the spread of airborne contaminants and lower the amount of infections.;

So the product itself isnt the problem. Its the installation.

To understand why, first you have to know that UV light needs whats called dwell time to kill mold and bacteria. The specific UV dosage required to kill different types of mold and bacteria varies. This dosage is measured in microwatts a second per square centimeter .;

Your average residential UV light puts out 50-200 µW/cm2. This means it needs a dwell time of 1,650-6,600 seconds to kill a mold spore. Bacteria and viruses, however, only need 50-200 seconds to die.

In other words, it essentially takes UV light 66 times longer to kill mold than bacteria.1

This equation is key to answering our question of why UV lights installed by HVAC and air duct companies almost never work.

Ultraviolet Light Fights New Virus

UV Ultraviolet Light Germicidal Sterilizer Lamp UV

In the fight against the coronavirus disease 2019 pandemic, an old weapon has re-emerged . More than a century after Niels Finsen won the 1903 Nobel Prize for discovering that ultraviolet light could kill germs , UV light is surging in popularity as a method for disinfecting hospital rooms and other public spaces.

Pathogens have evolved, but our tools to clean the environment have not, said Mark Stibich, chief science officer and co-founder of San Antonio, TX-based Xenex. We need a new tool to fight them, not just a mop and bucket.

Xenexs disinfecting robot, called LightStrike , can kill 99.99% of the severe acute respiratory syndrome coronavirus 2 in 2min at a distance of 1m . UV light will not replace the mop and bucket, but it complements chemical disinfectants by targeting germs in a proven and different way.

The Xenex LightStrike, shown here set up inside a hospital room and a hotel room, is stationary during use, but the head moves up and down, and its xenon lamp pulses many times a second with UV light that spans the spectrum from 200 to 315nm. Credit: Xenex, with permission.

Xenex is one of at least 30 companies making UV disinfection equipment. And not just for hospitals. Another company, Dimer UVC Innovations of Los Angeles, CA, USA, markets a cart with UV lamps, called GermFalcon , that it claims can disinfect a whole airplane in 3min . UV light is also being used to disinfect and re-use hospital face masks .

You May Like: How To Get Rid Of Airborne Mold In House

How Do Hepa Filters Work On Mold

A HEPA filter is a mesh of fabric designed to trap particles that attempt to pass through it. They are built to meet a U.S. Department of Energy standard requiring that they stop 99.97 percent of all particles that are 0.3 microns in size from passing through them. Mold spores can vary tremendously in size, but the size range is generally between 4 microns up to about 20 microns . This means even the smallest mold spores fall well within the HEPA specification, allowing a HEPA filter to trap most mold spores that pass through them. Actual performance can depend on how frequently the HEPA filter is changed and how airtight the filter frame is. Any gaps will allow mold spores through.

Note that we do not recommend washing and reusing HEPA filters, even ones that are labeled as reusable, as washing likely damages the fiber mesh and reduces the filters ability to trap particles. Plus, if you are concerned about mold, you will not be able to remove every mold spore from the dense HEPA mesh when washing it.

Hepa Filter Air Purifiers For Mold Spores: What To Look For

If youve had a major mold problem in your house, or someone in your household has allergies that make them especially sensitive to mold spores, an air purifier is a good option for keeping the air as free of mold spores as possible. HEPA filters are among the most popular air purifiers on the market, but they are often combined with other air purifications technologies, so it can be difficult to know what kind is the best for you.

We will look at how effective HEPA filters are at removing mold spores from the air in your home, and then we will examine the different anti-mold technologies found in HEPA filters to see which ones will do the best job at maintaining your indoor air quality and keeping your house mold-free.

Read Also: Is Mold Harmful To Your Health

Poor Wick Filter Maintenance

The wick filter serves a critical purpose of trapping dirt and other solid particles in water so that these particles dont find a way into your home. The particles usually stick to the filter and stay there until the filter is washed or replaced.;

It is therefore vital that you maintain the filter accordingly to prevent dirt buildup. If its a reusable filter, make sure to wash it at least twice a week or as recommended by the manufacturer. Once the filter reaches its end of life , replace it with a new one. Failure to wash and replace the wick filter puts you at risk of mold and bacterial infections.;

Does Uv Light Kill Bathroom Mold

UV-C light is being used across Canada to disinfect, but can it kill COVID-19?

moldultra-violetlampskilling moldmoldUVlampsUV lightmoldUV lightmold

Ultraviolet Light is a proven technology that has been killing mold, fungus, bacteria, and viruses since the beginning of time. Ultraviolet light can kill mold in air and on surfaces. It’s effective at treating the mold you know about, and can help kill mold, including airborne spores that you can’t see.

Furthermore, does UV light kill mycotoxins? It has been proven in numerous studies and actual application that UV light will kill mold, mildew, and other pathogens.

Just so, how long does it take UV light to kill mold?

one to two hours

Does UV light kill Aspergillus?

The effect of humidity on killing of Aspergillus spores by ultraviolet radiation has been found to be negligible. A delay in germination as a result of irradiation has been found. The Bunsen-Roscoe reciprocity law has been found to hold within the limits of the radiation intensities studied.

Also Check: How To Remove Mold Smell From Basement

Using Uv Light To Kill Bacteria And Mold

There are three types of ultraviolet wave lengths, and although powerful, they cannot be seen by the human eye. UV-A is more commonly known as black light, UV-B comes from the sun, and UV-C can kill mold, bacteria, and mildew and is used to protect equipment in medical settings. Because of its cleaning powers, a UV-C lamp can also be added to the indoor cooling coil of your HVAC system so that harmful do not become airborne and circulate throughout your home.

Will Uv Light Actually Kill Mold

When you use UV light correctly, it will kill mold, mildew, and a range of additional pathogens. While this light can be placed anywhere in your home or facility, UV light is commonly used to kill mold within air conditioning units. While UV light is used by many industries for the purpose of killing mold, its primary application is microbial decontamination for air purification, water treatment, and medical purposes. When used at short wavelength frequencies, ultraviolet light is germicidal, which means that it can destroy and eliminate germs. The short wavelengths of UV light allow for mold to be destroyed as well.

UV light has proven to be highly effective at killing mold because the entirety of the environment where the lamp is being used is blanketed by the light, which allows for the whole area to be disinfected. While manual cleaning methods are able to get rid of mold, these methods are usually much more time-consuming and ineffective. If you install an ultraviolet lamp in an HVAC system, it can keep the entire system free from mold. Keep in mind that the overall effectiveness of UV lights for killing mold depends on the length of time that the mold is exposed to the light as well as the intensity of the light that youre using. UV lights with higher intensity will typically be more effective at killing mold than less intensive lights.

You May Like: Can Black Mold Be Removed From Wood

Can Ionizers Kill Or Remove Mold

Ionizers work by adding an electrical charge to the particles that move through it, usually giving them a negative charge. As they float about the room, these negatively charged particles tend to stick to other positively charged particles with which they collide. These clumps of particles are heavier than the individual particles, causing them to fall out of the air onto surfaces much faster than they would in their original state. Charged particles might also stick to surfaces that have the opposite charge . Some ionizers have a charged plate specifically designed to attract opposite charged particles to it. These are known as electrostatic purifiers, although they function in the same basic way as ionizers.

When mold spores go through an ionizer, they get an electrical charge, clump together with other particles, and fall out of the air. This results in mold spores on the floor, in your carpet or on your furniture, which is exactly what you want to avoid. The ionizer does nothing to kill or destroy the mold spores, it just makes them settle out of the air faster.

Thus the answer to our question is: No, ionizers do not kill mold spores. They also will not have any effect on mold growing in your house.

How Does Uv Light Kill Bacteria And Mold

LED T5 Tube Bulb UV
  • UV light sends out short wavelengths of energy that penetrate mold. By doing so, it breaks up the DNA inside to clean and eventually inactivate it.
  • To be effective in eliminating the mold, bacteria, or mildew, it needs to be exposed directly to the UV-C light.
  • Installing a UV lamp as part of your HVAC system helps kill mold, bacteria, and mildew that flourish.
  • Since UV light can be harmful to people, you should never look directly at the UV lamp while its operating.

Don’t Miss: How To Detect Mold In Carpet

Could It Be Time For A New Humidifier

If all the tips discussed above dont work, it might be time to shop for a new humidifier. Suppose the mold keeps returning within just a few days of thoroughly cleaning the humidifier. In that case, it might be a sign that the sediment buildup in the tank or other parts of the humidifier is just too much. At that point, the best solution is to replace the old humidifier with a new unit.;

What Kind Of Uv Light Kills Mold

The type of UV light thats able to kill mold is UV-C, which has a short wavelength. UV-C lamps are effective at disinfecting air ducts, air conditioners, and other indoor spaces that attract mold spaces.

UV-C lamps are also called germicidal lamps because they are able to disinfect even air and non-porous surfaces. When used properly, a UV-C light sanitizer can help keep your house clean and free of germs and other pollutants such as mold.

Here are some of the best UV-C lamps to buy:

  • Germ Guardian Pluggable Air Purifier & Sanitizer
  • Freshr Portable UV-C Sanitizer
  • Dsane UV Light Sanitizer with Quartz Ozone Lamp

UV-C is a very short length of UV light that works by disrupting the nuclei of microorganisms, prevent mold from reproducing and kills them eventually.;UV-C light also disorganizes the DNA of the mold and leads to a defect in the cell reproduction of the mold and eventually the mold cell will die.;

There are HVAC UV lights that can be installed in your HVAC system to kill mold and mold spores in the whole system.;;

Don’t Miss: How To Prevent Mold From Growing

Does A Uv Light Kill Moldspores

The effectiveness of UV light is also dependent on the size of the mold colony, its location and the amount of exposure to the UV light. The distance between the mold infested area and the source UV light also determines the effectiveness of the UV light. For instance we have mold growing on surfaces, such surfaces when aired under the sun or exposed to a UV lamp, the mold shall be effectively killed.;

The UV light produces electromagnetic energy that destroys the DNA and RNA components of the microorganisms. This effect of UV light on mold makes them unable to grow or reproduce and they eventually die. Using UV light is effective in killing airborne and visible mold spores.;;

UV light has been proved to effectively kill mold. This occurs when the UV lamp has been placed in area and engulfs the whole area, making it impossible for mold spores to grow.;

READ MORE: Do Ozone Generators Kill Mold?

Also UV lamps can be installed in HVAC system. It shall be able to keep all the HVAC system free of mold, a very effective way of getting rid of the mold menace.;;;

It is advisable that you make the use of UV light a regular routine for killing mold spores in your home. This is so because it is effective and not harmful to the environment or people.;

After mold remediation, it is efficient for one to use UV light to kill any mold spores that might have escaped into the air.;;

Use Ultraviolet Light To Kill Mold

Far UVC Linear Disinfection Lights Kill 99% of Viruses in Occupied Areas

Ultraviolet light is an effective method to eradicate the plaque from homes.

What is UV Light? The Ultraviolet light is the part of the electromagnetic spectrum that cant be seen with the naked eye. Just like the X-ray and infra-red light, it falls within the high energy band.

The UV-C is the active part of the light; it has been shown to kill 99.9 percent of the molds over a one to two hours period.

Also Check: Will An Ozone Machine Kill Mold

Reasons To Add Ultraviolet Light To Your Mold Remediation Toolbox

Being based in the Sunshine state, we know firsthand just how many people in the hot and humid south have to deal with the fight against mold. Throw hurricanes into the mix that can accelerate mold growth due to flooding or leaks and you have a large number of homeowners and businesses concerned about how to effectively deal with this issue, including the financial burden.;

According to, the average cost of mold remediation reported by homeowners nationwide is $7500, but can easily soar into the tens of thousands when there is extensive damage.

However, an even bigger concern is their health, or that of their customers or employees.; Thats where mold remediation companies come into play to effectively take care of mold and prevent the health risks of mold that can include skin irritation, asthma, respiratory infections or exacerbation of other existing diseases.

To do that, they need the right tools to do the job right the first time.; Here are 3 reasons why ultraviolet light is a good addition to that toolbox.

The Wands Uv Light Can Help Kill Germs Mold And Irritants That Cause Common Colds Infections Asthma And Allergic Reactions

Products featured are independently selected by our editorial team and we may earn a commission from purchases made from our links; the retailer may also receive certain auditable data for accounting purposes.

One of the best ways to help curb the spread of germs is to frequently clean and disinfect the high-touch surfaces you come into contact with every day. There are too many high touch surfaces to count, but they include things like your phone, keys, wallet, door knobs, light switches, remote controls, bedding and toiletries.

While you can always disinfect your devices using wipes or a good disinfectant spray, those products require a lot of time to use, and many of the best disinfectant products have been sold out for months. For a more efficient and effective way to clean high-touch surfaces around the house, consider a UV sanitizing wand, like this one from Sharper Image.

The world-famous accessories brand has its Travel UV Sanitizing Wand on sale for just , less than on the Sharper Image website itself.

Sharper Image

The Shaper Image TrueTV Travel Sanitizing Wand uses powerful Ultraviolet-C light to kill up to 99.9% of bacteria, including E. coli. Hold the portable device in your hand and wave it slowly over anything you want to disinfect. Sharper Image says the wands UV light can help reduce microscopic germs, mold and irritants that cause colds, infections, asthma and allergic reactions.

Sharper Image

You May Like: Do It Soft Plastic Molds

Popular Articles
Related news