An A/C doesn’t just cool your home. It also filters impurities out of your air such as dust, pollen and mold and helps raise your indoor air quality (IAQ). But how well does it work? What criteria does an efficient A/C filter meet, and how are they measured?
The American Society of Heating, Refrigeration, and Air Conditioning has a rating system called minimum efficiency reporting value, or MERV, which measures air filters on a scale from 1 to 16 based on their ability to remove contaminants from the air. But HVAC companies can use all different criteria to test their filters’ effectiveness.
Here are some of the factors that go into identifying an efficient A/C filter.
- Pressure drop: How is an A/C’s airflow affected as the filter fills up? The pressure drop increases as the filter reaches capacity, and the higher the pressure drop, the lower the airflow and the less efficient the unit.
- Dust holding capacity: This measurement reflect how much dust an air filter is able to collect before the pressure drop increases.
- Arrestance and dust spot efficiency: These refer to an air filter’s ability to capture and remove dust particles from the air, respectively. They are typically measured in a lab, under controlled test conditions, using only larger particles. This makes them a poor way to measure efficient A/C filter performance under real world conditions, which deals with much smaller-sized particles.
- Efficiency: A filter’s efficiency is its ability to stop particles from passing through it. The higher the efficiency, the smaller the size of particles that can be filtered out, from ordinary dust and pollen down to cigarette smoke and other harmful gases and vapors. The smaller the particle, the more harmful it is. Initial efficiency is defined as how efficient the filter is when it’s brand new, whereas sustained efficiency is how efficient it’s able to remain, on average, over the course of its life.
For more tips on raising your indoor air quality with an efficient A/C filter, as well as general home comfort advice, contact the experts at Robert McGill Air Conditioning. We’ve proudly served the eastern Palm Beach, northern Broward and southern Martin counties for more than 30 years.
Our goal is to help educate our customers in Palm Beach County, Florida about energy and home comfort issues (specific to HVAC systems). For more information about a/c filters and other HVAC topics, download our free Home Comfort Resource guide.
We are here to help you by offering our air conditioning supports if you reside in Beach, Fort Lauderdale, Greenacres, and Lake Park. And also, our AC auto fix shop is available in Lake Worth, Lantana, Loxahatchee, and Century Village. AC is most essential devices for summer time and whenever it is impaired then please do not make any misunderstandings to contact with us for a free calculate on your AC device.
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