Newsletter Issue 25

The Best Sterilization and Purification Equipment For Fan Coil Unit

Aimee Duan | Aug 26, 2021

COVID-19 pandemic was severely affecting the world and it’s continuously influencing our daily life anywhere by means of particulate pollutants in the air. We spent much more time indoors for remote working, studying and entertainment. Is there any economical way to just upgrade our existing AC system to supply the sterilized clean air instead of shelling out another new machine?

The answer is YES.

We’ll introduce a fantastic device which is specially designed for the Fan Coil System in this newsletter.

AirQuality MESP air purifiers for Fan Coil Unit (FFC series) is the product meet all your expectation with following features:

• Observable or Measurable Purification Effectiveness (tested and certified by 3rd party)
• Microorganism Purification Efficiency ≧ 90% @ 1.25 m/s
• Viruses Killing Rate (H1N1) 98.71% (60 minutes in 30 CBM space)
• Bactericidal Rate (Staphylococcus albus) 99.93%
• Permanent Filter (washable, no need to replace)
• Auto On/off Work With Fan Coil
• No Noise (without a built-in fan)
• Low Pressure Drop (15 Pa @ 1.5 m/s) - low energy consumption
• Ozone free

If you consider to have a device can work with fan coil, both purify and sterilize the indoor air, and safe without harmful byproducts, this may be the only choice all around the world.

How does it realize all the points above?
A MESP air filter makes use of electric current to assist the removal of particulate pollution from air mainly by two steps:
1) Infusing electric charge of passed through air;
2) Capture the pollutants by the dust collection module which is an insulating honeycomb and embedded with metal electrodes.

There is a filter for fan coil, why should I replace it?
Sure, there is a pre-filter installed on the return port of fan coil. We can easily search for those filter specification from website like below image: MERV (Minimum Efficiency Reporting Values) is 4.
For reference, MERV 9 class filter can prevent PM 10. If the filter is MERV 4 (half of MERV9), I’m afraid it’s hard to purify the air with effectiveness.

Why not use HEPA filters in the fan coil section for air purification?
HEPA stands for High Efficiency Particulate Air Delivery. Filter made of HEPA is considered the gold standard when it comes to air purification today.
The obvious benefits of HEPA filters is high efficiency but it need to be replaced constantly.
The most important thing is, the fan coil has a limited air pressure like 30 Pa maximally while HEPA filter's pressure drop starts from 100 Pa. In a word, it’s impossible to use HEPA filters in existing fan coil systems.

How about other technology filters like ESP?
Compared with HEPA filters, ESP air purifier has no issue of high pressure drop and gets higher purifying efficiency versus MERV 4 class pre-filter. Whereas ESP technology is forbidden to apply in the fan coil system due to its byproducts like ozone, which is harmful for people’s health, especially for those who got respiratory disease. What’s more, there is spark and arc risk during operation.

Therefore, AQT'S FFC series MESP air sterlizing purifier is the best and most safe choice for filtration solution of fan coil units. Please check a tear down video to look into the product.

For more information, please don’t hesitate to contact your sales representative in AQT, or directly send e-mail with your query to Or you can find more info on our website:

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