HVAC NEWS & INFORMATION

How to Choose an Air Purifier

Posted by Ohio Heating

Nov 11, 2021 1:30:00 PM

As cold weather approaches and we spend more time indoors. it is time to consider a whole house air cleaner.  air cleaner 22-108529-edited

On average, we take about 20,000 breaths a day and spend more than 90% of our time indoors. The level of environmental pollutants can be five times higher indoors than outside making a case for cleaning the air inside our homes.

if anyone in your family suffers from allergies, sneezing, wheezing, red eyes or asthma, a whole house air cleaner can help reduce the exposure to mold, pollen, dust, dander, and other toxins in the air.

The first line of defense is to clean the air in your home. Removing dust, allergens and odors can do wonders for the health and quality of your family's life.

Here are some types of air cleaners to consider:

HEPA FILTERS  
By definition, true HEPA filters are at least 99.97% efficient at filtering 0.3 μm mass median diameter (MMD) particles in standard tests. Most penetrating particle sizes may be smaller than 0.3 μm, so the filtration efficiency of most penetrating particles can be slightly lower. HEPA filter efficiency is better than MERV 16. HEPA air filter

HEPA filters may not be an appropriate option for some into HVAC systems due to high-pressure drops and the likelihood that systems will need new filter racks to allow sufficient sealing to prevent filter bypass.

To function properly, HEPA filters must be sealed properly in filter racks. Filters are often delicate and require careful handling to prevent damage and preserve performance.

ELECTRONIC AIR FILTERS
There include a wide variety of electrically-connected air-cleaning devices designed to remove particles from airstreams.

Removal typically occurs by electrically charging the particles using corona wires orby generating ions (e.g., pin ionizers), and:
• Collecting particles on oppositely charged plates (precipitators, ESP),or
• Charged particles’ enhanced removal by a mechanical air filter, or
• Charged particles’ deposition on room surfaces.

The fraction of particles removed from the air by an electronic filter is termed “removal efficiency.”

The effectiveness of reducing particle concentrations depends on:
• Removal efficiency
• Air flow rate through the filter
• Size and number of particles
• Location of the filter in the HVAC system
• Maintenance and cleanliness of electronic filter componentsUltraviolet germicidal irradiation 6-17 at 2.05.12 PM

It is critical to wipe the wires in electrostatic precipitators as silicone buildup reduces efficiency. Always follow the manufacturer's instructions when using electronic air filters.

ULTRAVIOLET ENERGY (UV-C)
Ultraviolet energy inactivates viral, bacterial, and fungal organisms so they are unable to replicate and potentially cause disease.

The entire UV spectrum is capable of inactivating microorganisms, but UV-C energy (wavelengths of 100 – 280 nm) provides the most germicidal effect, with 265 nm being the optimum wavelength.

The majority of modern UVGI lamps create UV-C energy with an electrical discharge through a low-pressure gas (including mercury vapor) enclosed in a quartz tube, similar to fluorescent lamps.

Roughly 95% of the energy produced by these lamps is radiated at a near-optimal wavelength of 253.7 nm. UV-C light-emitting diodes (LEDs) are emerging for use.

Types of disinfection systems using UV-C energy:
• In-duct air disinfection
• Upper-air disinfection
• In-duct surface disinfection
• Portable room decontamination

BIPOLAR IONIZATION/CORONA DISCHARGE / NEEDLEPOINT IONIZATION AND OTHER ION OR REACTIVE OXYGEN AIR CLEANERS iWave-C
Air cleaners using reactive ions and/or reactive oxygen species (ROS) have become prevalent during the COVID-19 pandemic. New devices that are not mentioned elsewhere in this guidance likely fall into this category. iWave air cleaner-1

Technologies utilize various methods to create reactive ions in the air that react with airborne contaminants, including viruses. The design of the systems can be modified to create mixtures of reactive oxygen species (ROS), ozone, hydroxyl radicals, and superoxide anions.

If you’re looking for air filtration systems for any environment, whether industrial, commercial, restaurant, or healthcare, Ohio Heating & Air Conditioning has an air cleaning solution for you.

We provide professional air filtration services individually tailored to meet the requirements of our clients. We offer a broad line of equipment to satisfy your air quality and air compliance requirements. Call 614-863-6666 to learn more.
Contact Us Now!

Topics: Air Cleaner, whole house air cleaners, indoor air specialists

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