What Is A UV Air Purifier? How It Works? And Shoud You Buy It?
A UV Air Purifier is a type of air filtering device that uses a UV lamp for air purification. If you’re considering getting a UV air purifier, it’s important to understand the following:
- What it is
- How it works
- If it’s safe to use
This post will answer all of your concerns about a UV air purifier – so, read on.
What Is A UV Air Purifier?
What Is A UV Air Purifier?
Basically, a UV air purifier uses UV light (UltraViolet light) to release radiation. UV radiation comes with wavelengths that are effective in the following:
Also called UltraViolet Germicidal Irradiation (UVGI), germs that are exposed to this light are killed and destroyed.
UV Light Air Purification - Fresh Aire, Blue Tube. via acoverstock
Related - The best air purifier of 2019
How UV Air Purifier Works
As an air purifier that doesn’t make use of a filter, a UV air purifier uses a UV lamp instead. When bacteria and viruses are exposed to the radiation of UV light, their DNA systems are destroyed – and they are also killed in the process.
Listed below are the different models of UV Air Purifiers.
As a stand-alone model of air purifier, this type of unit is equipped with a UV lamp.
It then uses a fan to force air to move past the UV light so as to kill any existing germs and microbes in the air.
Pluggable models of UV air purifiers employ the same principles and technology as free-standing models.
However, because of their limited size and power, this type of air purifier is only suitable for small spaces (or small rooms).
There are UV lamps that can be installed in air conditioning ducts.
Again, this will work in purifying the air from germs and microbes by killing them once they are exposed to the UV light’s radiation.
To use a UV air purifier, you just need to place the unit in the area or room that you want to clean from air pollution. However, note that this type of air purifier only works for the following:
- Mold Spores
- Odor-Causing Germs
Do UV Air Purifiers Really Work?
Yes, it’s been scientifically proven that UV air purifiers really work – and they’re actually effective in killing up to 0.1 micron-sized germs. However, the efficiency of this type of air purifier in killing germs involve several factors, such as:
- Length of time that the germs or pathogens are exposed to the UV light – they should be directly exposed for at least half a second.
- Intensity – High intensity radiation can more effectively kill bacteria and viruses than low intensity radiation. Therefore, the UV light should be powerful enough to destroy germs.
- Proximity – Since light exposure is needed, the germs and microbes should be close enough to the UV lamp for them to be killed and destroyed.
When already inside the air purifier’s chamber, the pathogens are already close enough to the UV lamp (the source of UV radiation) to be filtered from the air.
So, again, yes – UV air purifiers work. However, their efficiency will greatly rely on their design, quality, and power.
In order to truly benefit from a UV air purifier, I strongly suggest choosing a model that uses the UV technology with other types of filters.
For example, if you choose an air purifier with HEPA filter and UV light technology combination, this will be very effective in purifying the air not only from germs but from other airborne particles (including dust and allergens) as well.
Advantages Of Using A UV Air Purifier
If you’re still in doubt as to whether you should get a UV air purifier or not, just consider the following advantages of this type of air purifier:
- Having a UV lamp inside an air purifier will sanitize the filters inside (if the unit is using a filtering system along with the UV light technology).
- A high-quality UV lamp bulb (one that’s made of quarts material) is unbreakable – and therefore safe.
- A UV air purifier is cheaper than models that use filters. Note, too, that the cost of UV lamps is cheaper and these lamps last for a long time.
- UV air purifiers are easy to maintain because they don’t use filters (there are no filters to clean or change).
- As long as you choose the appropriate type and model of UV air purifier for your needs, it will work well (and meet your expectations).
Disadvantages Of UV Air Purifier
For the sake of knowing all sides in a situation, let us consider the disadvantages of UV air purifiers. See the points listed below.
- Very cheap models can possess weak UV lamps and prove to be ineffective in killing pathogens.
- Its efficiency will depend on its design. A UV air purifier with very fast airflow can also make the unit ineffective in killing and destroying germs as microorganisms need to be exposed to the light for some time for it to work.
- Models that use cheap light bulbs can be dangerous. Such bulbs can be weak and may break easily – if so, some mercury vapor may be released into the air (this is toxic to people).
- UV air purifiers that use high quality UV lamps can be quite expensive.
Is It Safe To Use A UV Air Purifier?
In general, UV air purifiers are safe to use. However, it would be better to choose models from reputable brands, just to be sure. You see, Companies that have long been trusted in the business typically use high quality materials in producing their products.
Who Should Use A UV Air Purifier?
Sickly people and those with low resistance and weak immune systems will surely benefit from using a UV air purifier. However, I also think that healthy people should consider it, too – because prevention is always better than cure.
If we can purify the air from one type of pollutant or contaminant, that will already benefit our health, right?
However, I really think that a UV air purifier will work best when combined with other types of air filtering systems – so I suggest looking for models that come with multi-stage air purification systems.
How To Maintain A UV Air Purifier
If you have a UV air purifier, keep the following things in mind when thinking about its maintenance:
- There are no filters to clean.
- As the UV lamp wears down, it will lose its effectiveness in killing germs.
- To make sure that your UV air purifier’s lamp is always performing at its best, replace the UV lamp before it’s dead.
GeneralAire® TERSus Air Cleaner - How to change the UV lamps via GeneralAire Inc
Should You Buy A UV Air Purifier?
If you’re keen on using a UV air purifier, there’s really nothing wrong with it. However, I really recommend using it in combination with other types of filters – especially HEPA filter.
You see, HEPA filters can filter the air from different types of airborne particles – so, you will feel immediate relief from indoor air pollution if you have an air purifier with this type of filter.
UV light technology is quite new, to tell you frankly – and it’s still being tested for flaws. Its use is also very limited since it’s only effective in purifying the air from pathogens.
When used in conjunction with other types of filters, I really think UV air purifiers can contribute well to improving your indoor air quality. So, yes – I do recommend you check this article on best air purifier 2019
Do let me know if this post has been helpful to you, ok? And if you think it will be useful for others, feel free to share it.