How do you check the efficiency of an air filter?

Air filter elements are evaluated using an industry wide standard (ISO5011) and their performance is expressed as an efficiency level. This efficiency level is determined by feeding air containing a known concentration of standard test dust into the air cleaner until the filter reaches the end of its life.

How do you check the efficiency of an air filter?

Air filter elements are evaluated using an industry wide standard (ISO5011) and their performance is expressed as an efficiency level. This efficiency level is determined by feeding air containing a known concentration of standard test dust into the air cleaner until the filter reaches the end of its life.

How many microns is a K&N air filter?

To assist with the desired level of protection and oil flow, K&N offers several replacement elements for K&N inline oil filters which filter between 25 and 100 microns.

How efficient are K&N air filters?

Laboratory tests utilizing ISO 5011 test protocols demonstrate that most K&N® air filters achieve overall filtration efficiency in the range of 97% to 99%. (The ability of an air filter to protect an engine is generally measured in accordance with laboratory testing procedure ISO 5011.)

What is ISO5011?

ISO 5011:2014 establishes and specifies uniform test procedures, conditions, equipment, and a performance report to permit the direct laboratory performance comparison of air cleaners.

How many microns should your air filter be?

5-10 microns
A standard air filter found in most HVAC systems are designed to capture particles that are 5-10 microns or larger.

How do air filter ratings work?

An air filter’s MERV rating is a scale from 1-16 that describes the minimum efficiency of the air filter. A low MERV rating means that the filter does not remove as many particulates from the air. Conversely, a high MERV rating indicates that the filter does a good job of removing particulates from the air.

Does K&N filter size matter?

Size does matter, so does quality. The only time it would hurt performance is at full throttle unless it’s way undersized. Just like you gain nothing from a K&N unless your full throttle. K&N’s have more surface area, filter more efficiently, and can be cleaned.

How often should I clean K&N air filter?

K&N recommends that you visually inspect your air filter once every 25,000 miles to determine if it needs to be cleaned. Cleaning your K&N Air Filter is not required if you can still see the wire screen on the entire air filter, regardless of how dirty it may appear.

Why K&N Filters are better?

This reduced maintenance and cost would make K&N Filters attractive even if they supplied the same level of airflow as a paper air filter. But airflow tests on K&N products have shown superior airflow, even when the filters are at their 50,000-mile cleaning interval.

Do K&N Filters allow more dirt?

There is no significant difference between a K&N filter and an OEM paper filter, both let in dirt. I don’t mind being wrong, it happens to everyone.