The short answer is yes. In recent years, we have seen the use of UV light in a wide range of different applications. If you’ve visited the dentist recently, you will have seen UV light used to kill microorganisms on surfaces. But, you may be surprised to learn that these systems are also very effective as a germicide to purify indoor air. At first, this process was restricted to use in laboratories, clinics and clean rooms. The technology is now more affordable and many companies now manufacture UV light systems for the HVAC industry. In this article, we will take a closer look at UV lights to help you make a more informed purchasing decision for your home.
The Different Types of UV Light Explained
Our sun releases three types of UV light, they are: UVA, UVB and as you might expect UVC. Aside from the very helpful and easy to understand naming convention, most people will only have noticed the effects of UVA and UVB light. Both UVA and UVB light are capable of producing sunburn on your skin, if you’re not covered or using a sunscreen with broad spectrum capabilities. The UVC light rays are a little different, they are still emitted by the sun but they are absorbed by the ozone layer in the upper atmosphere. So, in our daily lives we don’t encounter UVC light in nature, but this type of light does have a germicidal effect on microorganisms.
The Germicidal Properties of UVC Light
UVC light has germicidal benefits that provide superior purification when compared to the alternatives. The reason for this effectiveness is that UVC light is located at the highest UV light spectrum. This energy is ideal when you need to disinfect microorganisms, such as: bacteria, fungi, algae and others. In fact, studies have shown that only 10 seconds of contact are required to kill a wide variety of microorganisms. If you install a germicidal UV light system in your HVAC system you can make major improvements to your indoor air quality (IAQ).
How Does a UV Light Kill Germs?
The UV lights are installed within the ductwork system that supplies air to each room in your home. The treated air is forced through the ducts when the fan is operating and this means you get cleaner air whenever the HVC system is running. The UV light will kill most bacteria, viruses and other microorganisms that may be contained in the air. The DNA of the microorganism is altered to make reproduction impossible. They are killed shortly after the exposure takes place and the air is cleaner, fresher and healthier to breathe.
The Benefits of Germicidal UV Lights for Your Home
Before you make a decision to install germicidal UV lights in your HVAC system, let’s take a look at the five main benefits in more detail, they are:
1. Improved IAQ
A standard air filter is capable of capturing a small number of bacteria and viruses. But, the main role of these air filters is to prevent particulates from entering sensitive components in your system. It is possible to install air filters with a higher Minimum Efficiency Report Reporting (MERV) value to capture microorganisms. There is a drawback with this approach, the denser nature of these filters requires more power to force the air through. This can lead to a higher energy bill and it can cause damage to your HVAC equipment. Alternatively, a UV light system can be installed in most ductwork systems without significantly raising the energy bills.
2. Sterilized Evaporator Coils
Every HVAC system has an evaporator coil which can be damp and this is especially true during the warmer summer months. The UV light system will shine the UVC light across the surface of the coil constantly and this will prevent the growth of any bacteria or mold.
3. Extending the Useful Lifespan of Your HVAC System
HVAC systems are complex, they need regular maintenance from a local certified heating and cooling specialist to run smoothly. Maintenance can increase the useful lifespan of your HVAC system and cleaner equipment may extend this period even further.
4. Avoid Condensate Drain Clog Formations
When a high efficiency furnace and air conditioner is running, it will remove moisture from the air. This low level dehumidifying process deposits the collected moisture in a condensate drain pan. Over time, the growth of algae in the drain pipe and the condensate drain line can clog the line. This can cause water damage if the drain pan overflows and this can be expensive to fix.
5. Improved Energy Efficiency
A cleaner HVAC system has improved air flow which helps the equipment to run at optimal efficiency. Installing UVC lights will keep your system clean from bacterial, fungal and other microbial growth that can impede the operation of the heating and cooling equipment. In this way, the UV lights will lower your energy consumption and your monthly bills.
Do I Need UV Lights in My HVAC System?
Hopefully we’ve made a good case for the benefits and viability of a UV light system for your HVAC system. The addition of a germicidal UVC lighting system would be a good investment for any homeowner that desires better IAQ for their home. Studies have shown that many of us have poorer IAQ compared to polluted air outside! This is an unhealthy environment for anyone, but there are more vulnerable people that can really feel the effects of poor IAQ. If you have any person living in your home with conditions, such as: asthma, allergies, a compromised immune system or a pre-existing respiratory condition they can react badly to poor IAQ. When a UVC germicidal light system is fitted these vulnerable people tend to notice the positive changes before the rest of us.
In Conclusion
UV lights for your HVAC system are very affordable and they are a sound investment for the medium to long term. They will improve your IAQ for superior home comfort, assist in the smooth running of your HVAC system and lower your energy bills. If you want to learn more about a UV light system, contact your local certified heating and cooling specialist today.