4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (2022)

UV lights for air conditioners and furnaces are one of the most under-utilized additions to HVAC systems. Most of us are primarily looking for the best HVAC UV lights for air conditioners to prevent mold infection (black mold is especially problematic), bacteria spreading, and so on. In actuality, that’s only a secondary advantage of UV lights for HVAC.

What is the main reason to install UV lights inside our air conditioners and furnaces?

9 out of 10 HVAC UV lights are installed to maintain the coil’s heat-exchange capabilities. According to Air Conditioning, Heating, And Refrigeration News, the primary reason to use lights in HVAC systems is the “ability of ultraviolet light to slash 10 to 35% of HVAC energy”.

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (1)

In short, to keep air conditioners energy-efficient. A 16 SEER unit can, after 5-10 years, turn into a 13 SEER unit. You can read more about SEER rating savings here.

Example:

  • Your AC energy efficiency today: 16 SEER.
  • Your AC energy efficiency in 10 years: 13 SEER? This would be a 19% lower efficiency. If your monthly electrical bill is $100, it can be $119 due to lower cooling coil performance.

This is because air conditioners are a perfect breeding ground for mold and bacteria, which in turn create an organic material that accumulates on our air handler’s coil. Obviously, that air handler will also blow residual mold and bacteria throughout our house.

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (2)

To prevent the loss of energy efficiency and the inconvenient spread of mold, we in HVAC use UV lights. Ultraviolet light (UV-C, to be specific, with 254-nanometer wavelength) the most effective way to prevent mold and bacteria buildup on:

  • Cooling coils.
  • Duct surfaces.
  • Air filters.
  • Drain pans.

Essentially, this 254 nm UV-C light destroys mold and prevents the negative consequences of mold growth including mold spreading, “dirty coils”, loss of energy efficiency, and so on.

Before we check which particular UV lights currently on the market are the best for HVAC (air conditioners, furnaces, etc.), let’s educate ourselves a bit about UV lights. If, however, you’re in a hurry, just can jump to the comparison of the best UV lights for HVAC by clicking here:

Skip To List Of Best UV Lights In HVAC

Here are the basics that we’ll cover:

  • What are the benefits of installing UV lights in your HVAC system? We’ll also explain the “dirty coils problem” using a simple ASHRAE equation for AC capacity (Capacity = CFM * 4.5 * (h1 – h2)).
  • How UV-C light is used to eliminate mold and bacteria buildup in HVAC ducts and AC and furnace filters.
  • What to look for in HVAC UV lights? We’ll see how you can pick the best UV lights for air conditioners and furnaces by checking the total input wattage, bulb length, and ease of installation.

In the 2nd part, we rounded up the most popular and best UV lights for HVAC, compared them, and reviewed them. There is quite a lot of differences between the best UV lights for AC units and furnaces and the ‘not so good ones’ with below 15 input watts and below 6-inch bulbs.

Let’s start with pointing clear advantages of using UV lights in your HVAC system bring:

Key Benefits Of Using UV Lights In HVAC (Direct And Indirect)

In simplest terms, UV lights kill mold in HVAC systems. These include high-efficiency gas furnaces, electric furnaces, oil furnaces, heat pumps, and mini-split air conditioners.

This is the direct consequence. Nobody really likes mold spores blowing all across their house every time you turn on your air conditioner. In fact, if you check the filters, you might even see the black mold forming on them, and sometimes we can also notice mold forming on the cooling coils themselves.

ASHRAE explains the benefits of using UV lights to prevent mold buildup in some detail. In their 2011 Handbook, the ASHRAE’s assembled committee has summarized the full advantages of using UV-C lights in this way (Chapter 60.8):

  1. UV lights “eliminate mold and bacteria”. Mold can cause pricy-to-get-rid-off mold infestation (you can read our article about how to check if you already have mold infestation here). Bacteria can cause all kinds of allergic reactions, and can even be considered a pathogen.
  2. UV lights “reduce and/or eliminate coil cleaning”. The main reason why we clean coils are due to the accumulation of organic matter. With UV lights, there is no mold or bacteria, hence there is no organic matter, and you can save yourself the job of cleaning the cooling coils in indoor units.
  3. UV lights help to “sustain coil performance”. This is the key advantage; the energy efficiency of every air conditioner depends on how well the cooling coil performs. If the biofilm from mold and bacteria accumulates on the coil, the coil performance is decreased, and other parts of AC will be under bigger-than-standard stress. This can lead to higher electricity bills and AC failures.

The 4th benefit of using UV lights in an HVAC system that ASHRAE points out is the consequence of the first 3 benefits, and it states:

“Use of UV-C can increase airflow and heat transfer coefficient and reduce both fan and refrigeration system energy use.” (ASHRAE 2011 Handbook, Chapter 60.8)

Cleaning the coils and installing UV lights can even bring back the original energy efficiency of air conditioners (that means the AC can be 10-35% more energy efficient).

The UV levels to achieve these benefits are quite small. These advantages can be achieved by striking the surface of coils by as little as 50-100 µW/cm2.

That means that a 1 W HVAC UV light bulb has the capability (in theory) to destroy germs in 10,000-20,000 cm2. That’s about 1,550 square inches of surface area.

The best UV lights for HVAC have 15+ W of power. The single best unit you can see in the table below – the #1 OdorStop OS144PRO – can generate as much as 36 W of power.

All that power goes into creating ultraviolet light which, in turn, eliminates mold. Let’s look at how UV light can eliminate germs like mold and bacteria:

How Do UV Lights In HVAC Work To Eliminate Germs?

UV-C light is widely known to be ‘germicidal‘. That means that it either kills or inactivated microorganisms. Ultraviolet has been used in medical sanitation and sterile work facilities for about 100 years now (UVGI disinfection).

(Video) UV Lights in HVAC Systems - Does it Kill Mold?

This 254-nanometer short-wavelength interacts with nucleic acids in the DNA of bacteria, mold, and other microorganisms. This disruption is so severe that the bacteria cannot perform their vital cellular actions, and which leads to germ death.

In HVAC, we usually install UV lights:

  • On the indoor cooling coil (UV light for air handler). These are considered mini-split UV lights.
  • In the ductwork. These are considered central air UV lights.
4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (3)

Before introducing UV lights, this was a perfect environment for mold and bacteria growth. Under the influence of UV lights in HVAC, these microorganisms cannot grow and their organic remains cannot mess up with our air conditioners and furnaces.

Example Of “Dirty Coils” Problem

If the mold and bacteria are allowed to grow, the organic material they create will accumulate on the cooling coils and form a harmful biofilm.

The capacity of air conditioner, for example, is thereby reduced. This is illustrated by the following equation:

Capacity = CFM * 4.5 * (h1 – h2)

Due to a biofilm-forming on the coils, the h1 – h2 difference will be smaller due to less efficient energy exchange. That means that, for the same air conditioner or furnace capacity, the airflow (CFM) will have to compensate for the reduction in heat exchange. This can lead to overuse of fan, other coils, compressors, and so on; eventually, something will break down.

How To Choose The Best HVAC Lights For Air Conditioners And Furnaces

Not all UV lights for HVAC are as well-balanced as OdorStop ones. The market of UV lights is somewhat saturated with low-quality producers that offer UV light bulbs of questionable specifications, safety measures, and lower lifespans in general.

To filter out all the ‘bad’ HVAC lights for air conditioners and furnaces, we have summarized a list of the best UV lights you can currently get for your HVAC system.

Specification-wise, there are 3 key specs to check out before you buy any UV light for HVAC. These include:

  1. UV light input power. The higher the wattage, the better the UV light bulb. Light bulbs with below 15 W input power are considered to be less effective than 15+ W bulbs. When picking the best UV light for your specific HVAC system, make sure that it has adequately high wattage.
  2. UV light bulb length. The effectiveness of UV lights depends on the total surface area of the bulb. In practice, the longer the bulb, the better. Below 8-inch bulbs are considered less than perfect; in many cases, you will find UV lights with several 8-inch bulbs in order to boost bulb surface area. However, the best bulbs are the ones with 12+ inch length. Those can be single bulbs or double bulbs; the whole point is that they have an adequately high surface area to radiate UV light on every part of the coil.4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (4)
  3. How easy it is to install UV light bulbs near the indoor air handler’s coil or in the ductwork. On average, UV bulbs are not the easiest AC or furnace accessory to install. The better ones have an easy installation process; if you’re a DIY enthusiast, you can even manage the UV light install yourself. In practice, it’s easier to install UV lights in the ductworks than near the indoor cooling coil.

Here is an example of how UV light installation into ductwork goes:

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (5)

Considering all this, we shall look at the best UV-C light bulbs you can install in your existing HVAC system:

Best UV Lights For HVAC In 2022

UV Lights For AC:#1 OdorStop OS144PRO#2 REKO Lighting R2000#3 D200 UV Lights#4 Bio Shield 50-BUVAS-E UV-C
Photo:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (6)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (7)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (8)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (9)
Max. Wattage:36 watts18 watts18 watts25 watts
Bulb Length:16″ (12″ also available)8″8″17″
UV Wavelength:254 nanometers (UV-C)254 nanometers (UV-C)254 nanometers (UV-C)254 nanometers (UV-C)
Ease Of Installation:Very EasyEasyEasySemi Easy
Price:$$$$$$$$$$$$$$$$
Average Rating:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (10)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (11)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (12)4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (13)
Availability: Check Price Check Price Check Price Check Price

1. Best And Most Powerful UV Light For HVAC: OdorStop OS144PRO

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (14)

Max. Wattage:36 watts
Bulb Length:16″ (12″ also available)
UV Wavelength:254 nanometers (UV-C)
Ease Of Installation:Very Easy
Weight:5.54 lbs
Price:$$$$
Rating:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (15)

OdorStop makes the best UV lights for mini-split ACs, central air units, and furnaces. All of their lights have 12+ inch light bulbs and the highest input wattage. Overall the best OdorStop UV light is the OdorStop OS144PRO; which also makes it the best HVAC UV light currently on the market.

OdorStop OS144PRO features 4 16-inch bulbs. Each of them is has a rated input power of 36 W. Combined, they have a 144 W total wattage. That is far beyond what any other UV lights are capable of achieving.

Here are two benchmark specification that makes OdorStop OS144PRO is the best overall choice for UV lights for any kind of HVAC unit (central air, mini-split, furnaces):

  • Each UV light bulb is extremely powerful (36 W) and has a way above average bulb length (16″).
  • There are 4 of them.

On top of that, you get all the advantages OdorStop UV lights have. This includes the energy-saving airflow sensor that turns the UV light on only when the HVAC system is actually running. Another nice thing is a LED indicator that tells you if everything is OK with the bulbs (green light).

The only back draw of all OdorStop is a higher price. This is the best brand of UV lights, and the price is quite justified, considering the input wattage and bulb length. Keep the energy efficiency (SEER rating, HSPF rating) of air conditioners, heat pumps, and furnaces will reduce the expected electricity costs and the OdorStop pay for themselves in HVAC energy savings.

All in all, OdorStop is the best and most well-known brand in UV HVAC lights. Their OdorStop OS144PRO UV lights can eliminate mold even in the biggest 5-ton, or 60,000 BTU unit:

(Video) 7 Best HVAC UV Lights For Air Purification

Pros

  • Overall the best UV lights against mold on the market
  • Highest input wattage (36W for each of 4 bulbs; combined wattage = 144 W)
  • Above-average 16″ bulb length
  • OdorStop is the best brand for any HVAC UV lights
  • OdorStop also offers a whole range of lights

Cons

  • The best brand in UV lights does have the highest price
  • Installing 144 W lights on a smaller 1-ton, or 12,000 BTU units, might be overkill

2. Most Popular Choice For UV Light For Air Conditioners: REKO Lighting R2000

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (16)

Max. Wattage:18 watts
Bulb Length:8″
UV Wavelength:254 nanometers (UV-C)
Ease Of Installation:Easy
Weight:1.32 lbs
Price:$$$$
Rating:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (17)

REKO Lightning R2000 is one of the most popular UV lights on the HVAC market. This is a universal UV light for ductwork; you can protect the effectiveness of your air conditioner as well as furnaces in the simplest possible way. With a price tag of below $100, REKO Lightning R2000 is one of the cheapest UV lights for HVAC on the market (among the good ones).

R2000 is a double bulb system with 8″ bulbs that radiate 254 nanometer UV-C light. Combined, they have a net input wattage of 18 W.

Two bulbs are used to maximize the surface area of the bulbs, and therefore maximize the radiation surface. In simplified terms, the two 8″ bulbs have equal UV-C radiation as one 16″ bulb (with 18 W power).

Having 8″ bulbs has its advantages, especially as far as installation is concerned. It’s easier to install shorter bulbs into existing ductwork. If you have big ducks, you won’t have problems installing 16″ UV light bulbs. Most households with 2-5 ton units or 30,000-90,000 BTU furnaces will much more easily fit two 8″ bulbs into the ductwork; that’s why REKO Lightning R2000 is so widely used and popular.

These are UV lights for less than $100 which makes them the most affordable choice. It’s practically impossible to find the cheapest UV lights for HVAC with the same specification and reliability.

All in all, REKO Lightning R2000 UV lights for air conditioners and furnaces are one of the most popular UV lights on the market. They are easy to install, have great wattage/bulb surface area specs, and are available for less than $100:

Pros

  • Most popular choice for ductwork UV lights for mini-splits, heat pumps
  • Have a double-bulb system with two 8″ bulbs
  • Combined input wattage of 18 watts (sufficient for standard HVAC systems)
  • Cheapest UV lights for HVAC on the market (below $100)
(Video) Best UV Light filter of 2022 DIY Ultra Violet Purifier Kills viruses and Covid-19 Step by step

Cons

  • They can’t compare to OdorStop models as far as input wattage and bulb length is considered
  • Cannot be installed into the indoor air handler, only in the ductwork (useful for mini-split UV lights)

3. Top-Rated Ultraviolet Light For AC Units: D200 UV Lights

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (18)

Max. Wattage:18 watts
Bulb Length:8″
UV Wavelength:254 nanometers (UV-C)
Ease Of Installation:Easy
Weight:1.53 lbs
Price:$$$$
Rating:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (19)

D200 UV is another popular top-rated UV light for HVAC. They have pretty much the same specifications as REKO Lightning R2000 UV lights and are available at a similar around $100 price point.

The dual-bulb system is well-optimized for energy savings as well as maximum radiation coverage. Two 8″ bulbs radiate UV-C light (wavelength of 254 nm) both up and down the ductwork. Because they are standard-length (8″), the D200 UV lights are also easy to install in the standard ductwork.

Available at about $100, D200 UV is quite a similar choice as REKO Lightning R2000. Honestly, there is minimal difference between the two UV lights specs-wise, with REKO being the first ones on the market and D200 UV lights trying to catch up:

Pros

  • Specs-wise very similar to REKO Lightning R2000
  • Dual-bulb system with 18 W power and two 8″ bulbs to maximize the surface and radiation area
  • Price tag of about $100; way below OdorStop $300+ price
  • Thus far, they seem quite reliable

Cons

  • D200 is a novel brand
  • Ductwork only UV lights
  • Specs-wise can’t be compared to #1 OdorStop UV lights

Buy D200 UV Lights Here

(Video) Best HVAC UV Lights 💡: Top Options Reviewed | HVAC Training 101

4. UV Light For HVAC With The Longest Bulb (17″): Bio Shield 50-BUVAS-E UV-C

4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (20)

Max. Wattage:25 watts
Bulb Length:17″
UV Wavelength:254 nanometers (UV-C)
Ease Of Installation:Semi Easy
Weight:3.5 lbs
Price:$$$$
Rating:4 Best HVAC UV Lights For AC/Furnaces (No Mold + Keep Efficiency) (21)

The surface area available for UV-C radiation is essential for good HVAC UV lights. Most UV light producers use more than 1 shorter bulb to get that surface area. Bio Shield 50-BUVAS-E UV-C lights are designed completely in reverse: they include a single 17″ light bulb.

17″ UV light bulb is the single longest bulb to be installed into HVAC ductwork. Using that, the Bio Shield 50-BUVAS-E UV-C bulb has the biggest surface area available for UV radiation.

That’s why it’s highly effective directly against mold and bacteria growth, and, as a consequence, prevents organic biofilm to start accumulating on the cooling coils (which would lead to a reduction in heat-exchange efficiency, and higher electricity bills).

Because it’s longer, the Bio Shield 50-BUVAS-E UV-C isn’t as easy to install. You have to place it carefully into the ductwork.

All in all, the Bio Shield 50-BUVAS-E UV-C has the longest light bulb that can produce above-average 25 W of power:

Pros

  • Longest UV light bulb (17″) and maximum radiation surface area
  • Has an input wattage of 25 W (way above average)
  • Affordable cost

Cons

  • Problem with 1 bulb is that if it goes out, you’re left with 0
  • Semi easy installation due to immense 17″ UV-C bulb length

This is about it on UV-C lights for HVAC. Essentially, they are one of the most underutilized HVAC accessories. We are all concerned about mold and keeping energy efficiency; HVAC lights can help us with both of these issues.

Table of Contents

(Video) Should I get UV lights to kill AC Mold?

FAQs

Do UV lights prevent mold? ›

How Does UV Light Kill Bacteria and Mold? 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.

How effective are UV lights for ac? ›

Germicidal or UV lights for HVAC systems are used to kill the DNA of germs, viruses, mold spores, bacteria and fungi as they pass through the air handler system. A strategically placed UV light is very effective at killing close to one hundred percent of these harmful pollutants.

Is UV filter in HVAC worth it? ›

While a UV light may help sufferers of breathing problems by destroying mold and mildew growth, HVAC UV lights are costly to install and upkeep, and will ultimately cause the need for HVAC repairs due to damage.

What size UV light do I need for my HVAC system? ›

Calculating UV-C watts per square foot of coil surface

If the lamp wattage is divided by the square footage of the coil surface (80/10.76) = 7.43, it's seen that about 7.5 lamp watts per square foot of coil surface area will meet the recommendations.

Is there a light that kills mold? ›

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.

What light kills fungus? ›

Over the last five years, the Light and Plant Health project team has refined the science and applied technology behind using ultraviolet (UV) light to kill the fungi that causes powdery mildew (PM), opening the door for the technology's use to control other plant pathogens.

Where is the best place to install a UV light in HVAC? ›

The best location to install a UV light if in the A-shape is above, center, and downstream of the coil. This allows the A/C ultraviolet light to shine the most amount of light on the coil, while killing some of the airborne microbes. The second best location is below the evaporator coil (if there is room).

How long do AC UV lights Last? ›

Typically, a UV lamp being used primarily to disinfect the air circulating through a home or small office should be replaced every 9000 hours or approximately every 12 months.

Does UV light damage AC coils? ›

If installed incorrectly, UV lights can damage some parts of the HVAC system.

Do UV lights use a lot of electricity? ›

How Much Electricity Does A UV Light Use? A typical household uses about 1 kWh per day. That means that a single UV light bulb would only cost around $0.10-$0.15/day to operate. If you were to purchase 10 UV light bulbs, you could save hundreds of dollars each year.

Are high MERV filters bad for furnace? ›

Wrong. While the highest MERV ratings are the most effective for air quality, they can harm your HVAC system. A higher MERV rating means a higher resistance, which means less airflow.

Are UV lights in AC units safe? ›

That is why more experts are advising folks to use uv lights in their AC systems to help disinfect the air steam. "The UV lighting apparently kills bacteria, mold, elements in the air naturally," said Linker. "The UV kills this bacteria so you are breathing better.

How much is an HVAC UV light? ›

Coil UV lights have a light cost ranging between $60-$285, an installation cost ranging between $100-$225, a lamp cost between $10-$60 and an energy cost between $15-$30.

Do HVAC UV lights create ozone? ›

Do UV Air Purifiers produce increased ozone? EPA: According to two studies, operating UV lamps installed in HVAC systems to irradiate the surfaces of air-handling units does not result in increased concentrations of ozone.

How do you install UV light in HVAC? ›

Installing a UV Light and Air Treatment System in an HVAC Unit! STEP BY ...

Do LED lights prevent mold? ›

LED light is killing bacteria, fungus and mold, and the scientific community has validated the results. Lab researchers, diode fabricators and fixture manufacturers are working to market LEDs that are an effective and safer disinfectant than ultraviolet (UV) light, while also offering a much longer operational life.

What kills mold? ›

There are several products that can be utilized to kill and remove mold. Some effective products that kill mold are:
  • Bleach.
  • Borax.
  • Vinegar.
  • Ammonia.
  • Hydrogen peroxide.
  • Detergent.
  • Baking soda.
  • Tea tree oil.

What types of UV light are there? ›

UV radiation is classified into three primary types: ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC), based on their wavelengths.

What LED light kills fungus? ›

Blue light (470 nm) LED antimicrobial properties were studied alone against bacteria and with or without the food grade photosensitizer, erythrosine (ERY) against filamentous fungi.

What wavelength kills fungus? ›

In conclusion, 222-nm UVC is able to inactivate a wide spectrum of microbial pathogens. Although its germicidal effect on fungal hyphae and spores is low, 222-nm UVC exhibited a stronger germicidal effect on bacterial endospores than 254-nm UVC.

Does UV light cure toenail fungus? ›

However, sometimes a podiatrist may recommend getting laser therapy to treat a toenail fungus. The laser system we use here at our practice is FDA-approved to treat and kill the fungus that infects nails. This UV light will penetrate through the nail to kill the fungus without damaging or harming the skin or nail.

Where does UV light get installed on the AC unit? ›

Types of HVAC UV Lights

The UV light unit is installed in the return air duct and cycles on with the air handler blower. Sanuvox is a top-rated manufacturer of air sterilization systems.

Do UV lights go in supply or return? ›

Ultraviolet lamps can be easily added to an existing forced air system. Lamps can be installed either in the main supply or return duct of a central heating or air system. The best installation location for a UV lamp is downstream of the air conditioning coils on the supply side of the heating/cooling system.

Do UV lights lose their strength? ›

Like your average light bulb, UV lights have a finite life span that requires them to be changed on a regular basis. As these lights operate, they slowly lose their effectiveness as a germicidal agent by about 15 percent each year.

What is the most common UV lamp on the market? ›

Chapter 29 UV Gel (Book #3)
AB
What is the most common UV lamp on the market?9-watt
UV gel products are usually packaged in opaque pots orsqueeze tubes
The tacky surface left on the nail after a UV gel has cured is called the ______ layer.inhaibition
17 more rows

When should I replace my HVAC UV light? ›

WHEN TO REPLACE? Most lamp manufacturers (Phillips, GE, and Sylvania, etc.) recommend: removing and replacing UV lamps every 9,000 hours or 1 year (annual preventative maintenance [PM] schedule).

Are all UV bulbs the same? ›

Q: Are all lamps that produce UVC radiation the same? Not all UVC lamps are the same. Lamps may emit very specific UVC wavelengths (like 254 nm or 222 nm), or they may emit a broad range of UV wavelengths. Some lamps also emit visible and infrared radiation.

What is the smell after using UV light? ›

The smell after UV disinfection is sometimes described as that of burning hair or the pungent odor of rotten eggs or garlic. The latter smell is characteristic of mercaptans.

Does UV light damage aluminum? ›

ALUMINUM IS RESISTANT TO UV RADIATION

Long storage periods and usage under exposure to UV-radiation have no effects on this material.

Does UV affect copper? ›

The copper, zinc, aluminum and steel all corroded faster in the UV light.

Do LED lights prevent mold? ›

LED light is killing bacteria, fungus and mold, and the scientific community has validated the results. Lab researchers, diode fabricators and fixture manufacturers are working to market LEDs that are an effective and safer disinfectant than ultraviolet (UV) light, while also offering a much longer operational life.

Does light stop Mould growth? ›

Does Mold Need Light? Light is not one of the key resources mold needs to grow. This is because, unlike plants, mold is not photosynthetic and doesn't use light to generate energy. In fact, light from the sun can inhibit mold growth and even kill it, so many molds thrive and grow better in dark environments.

Do fluorescent lights prevent mold? ›

UV light is able to effectively kill mold because the electromagnetic radiation that it produces is able to work as a disinfectant and can penetrate through organisms.

Do UV lights work in air ducts? ›

UV lighting prevents microbial buildup on air filters, cooling coils, drain pans, and duct surfaces. Your entire HVAC system will operate smoothly throughout the year. UV lighting reduces contaminants built up in your system's ductwork; thus, the heat exchange and airflow are both dramatically improved.

Does red light therapy help with mold? ›

INFRARED SAUNA AND THE PATH TO HEALTH

It's no surprise that infrared therapy is one of the key methods to purge mold toxicity. A regular, regimented schedule of 1-3 sauna sessions per week works well to pull mold toxins out through sweating.

Can mold grow in artificial light? ›

The spectrum of artificial lighting is different from sunlight and doesn't emit the same type of photons that kill mold and stop its advancement. While mold prefers limited light or even total darkness, it still grows inside homes where incandescent or fluorescent lights are burning.

What is UV light made of? ›

A UV lamp is different from a regular lamp because it's typically made of quartz instead of glass. Inside, there is an inert gas mixed with mercury. When the lamp is plugged in, electricity reacts with the mercury, and the lamp produces UV light. The type of UV light emitted depends on the pressure inside the lamp.

What temperature stops mold growth? ›

Set your thermostat to regulate the temperature and keep it around the low 70s. This will help prevent mold from growing, so you can enjoy your time away without worry.

Does mold grow more in heat or cold? ›

Many fungi grow well at temperatures between 60 and 80 degrees Fahrenheit, which are also ideal temperatures for human comfort. In addition, as mentioned above, temperature gradients often produce the moisture needed for mold growth.

How can you prevent mold growth? ›

To Prevent Mold Growth in Your Home

Keep humidity levels in your home as low as you can—no higher than 50%–all day long. An air conditioner or dehumidifier will help you keep the level low. You can buy a meter to check your home's humidity at a home improvement store.

What type of UV light kills powdery mildew? ›

CleanLight is based on UV light, which is very effective against powdery mildew and botrytis. The CleanLight Pro provides a great way to fight powdery mildew on plants. This UV light is very effective against microorganisms like fungi, viruses and bacteria.

What makes mold grow faster? ›

Water: Molds thrive in damp, humid, and wet conditions. They require water to grow and spread, which is why it is recommended to keep homes – especially walls and carpets – as dry as possible. Water leaks, flooding, high humidity, and condensation all provide moisture mold can use to grow and spread.

What humidity grows mold? ›

Remember, mold grows best at a relative humidity of 55% so keeping the humidity well below that percentage is your safest bet. Most modern dehumidifiers have the ability to set a minimum humidity level. Set yours right around 40% to keep mold from growing in your home.

Where is the best place to install a UV light in HVAC? ›

The best location to install a UV light if in the A-shape is above, center, and downstream of the coil. This allows the A/C ultraviolet light to shine the most amount of light on the coil, while killing some of the airborne microbes. The second best location is below the evaporator coil (if there is room).

What is the smell after using UV light? ›

The smell after UV disinfection is sometimes described as that of burning hair or the pungent odor of rotten eggs or garlic. The latter smell is characteristic of mercaptans.

How long do AC UV lights Last? ›

Typically, a UV lamp being used primarily to disinfect the air circulating through a home or small office should be replaced every 9000 hours or approximately every 12 months.

Videos

1. Installing a UV Light and Air Treatment System in an HVAC Unit! STEP BY STEP
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