Clean Air Delivery Rate, or CADR, measure how much clean air an air purifier can move into a room. The effectiveness of an air purifier depend upon how much clean air the air purifier can move through a room in comparison to the amount of particles in the air. The CADR chart shows how much clean air air purifiers of different make and model can deliver.
Additionally, the CADR chart also demonstrates the relationship between the CADR of an air purifier and the size of the room that need to be cleaned. Air purifier CADR ratings are based off three different types of particles. CADR ratings of the particles is measured in cubic feet of air per minute.
How CADR Helps You Choose an Air Purifier
The three types of particles that are measured are dust, pollen, and smoke. Because dust and pollen particles is relatively large, air purifiers often have high CADR ratings for these two type of particles. Smoke particles are the smallest of the three particles, and because of the difficulty in capture smoke particles, the CADR rating of smoke is the lowest of the three ratings listed for air purifier make and models.
If an individual is looking to remove smoke from a room, they should look at the CADR rating of smoke particles. However, if the individual is looking to remove dust and pollen from the air, they should use the CADR ratings for those two particle types. Individuals must also consider the size of the room that the air purifier will clean.
If the air purifier is too small for the size of the room, it will not clean the air effectively in that room. The CADR chart uses a formula that calculates the air purifier that best suit the size of the room to be cleaned. The formula uses the size of the room in square footage.
If the CADR rating of the air purifier is too low, the air purifier will not clean the air in the room as effective. However, if the air purifier has a higher CADR than calculated for that room, the air purifier will provide more cleaning power to the room during times when there is more dust or pollen in the air than normal. It is important for individuals to understand the difference between airflow for an air purifier and the CADR of that air purifier.
Airflow measure the total amount of air that the fan of the air purifier moves. CADR, on the other hand, measures the amount of clean air that pass through the filter of that air purifier. Air purifiers may have high numbers for both measurements.
However, CADR is more accurate measurement of the performance of the air purifier. CADR focuses on the amount of clean air that the air purifier releases, while airflow is only a measurement of the movement of the fan itself. Air changes per hour is another concept related to air purifiers.
This concept measures the amount of time that the air in a room passes through the air purifier. One air change per hour means that the air in the room pass through the air purifier once per hour. Many air quality expert recommend five air changes per hour in a standard home.
Five air changes per hour means that the air in the room is fully cleaned every twelve minutes. Air changes per hour of two means that the air passes through the air purifier every thirty minutes. Eight air changes per hour means that the air in the room passes through the air purifier every nine minutes.
Individuals should also consider the noise and energy use of the air purifier. Air purifiers that people move to high speeds will use more electricity and create more noise. Many individuals choose to use the medium speed during the day and low speed during the night in their bedroom to reduce the noise created by the air purifier.
It is, therefore, important to understand the CADR of the air purifier at its maximum speed so as to understand the capacity of that air purifier to clean the air at lower speeds. The placement of the air purifier and the maintenance of the air purifier will also impact the performance of the air purifier. The CADR chart only provides the CADR ratings if the air purifier is not placed against a wall or behind furniture in the room to be cleaned of particles in the air.
If the air purifier is placed against a wall, its intake and exhaust will be limited, and the CADR will decrease. Additionally, air purifiers require the replacement of their filter regularly. If the filter is old and used often, the CADR will decrease due to the restricted amount of air that can pass through the filter.
The CADR numbers provided on the CADR chart are made assuming that the air purifier has both a fresh filter and clear air pathway through the air purifier. The process of selecting the appropriate air purifier for a room requires that individuals find an air purifier whose CADR match the size of the room that is to be cleaned, the type of particles that are to be removed from the air, and the speed at which the air purifier will be run. By matching the CADR to the size of the room and the particle types, the air purifier will work effective in the room.
The CADR chart is a tool that allows individuals to find air purifiers that best match their room. Youll find that a moddern air purifier can make a big difference. It is actualy better to pick one with alot of power.
If you want to recieve better air quality you should of checked the CADR first. One of the most importent things is that the air purifiers size is right for teh room. Dont forget to check the rooms size before you buy.
It makes it much more comfortabley livig.