How To Measure For A Custom Size Air Filter

by Admin

Air filters are an extremely important thing that every home, office and other place should have for improving the quality of the air by removing dust particles and bacteria from the air. This helps in preventing discomfort and illness. There are multiple air filter sizes available in the market. However, you also get the option to choose a custom-size air filter for your home or workplace. Before choosing a custom size air filter you should have the correct measurement to make sure that the air filter will be working efficiently.

While there are standard sizes of air filter that fits perfectly with most of the systems, some unique HVAC (Heating, Ventilation, and Air Conditioning) setups and older air conditioners and custom-built systems require to have custom size air filters. It is important that the air filter should fit perfectly with your HVAC system so that it will be able to run smoothly and efficiently. This also helps reduce the workload on the fans and motors making them consume less energy and helps in extending their lifespan.

A perfect-fit air filter also helps keep the dust, pollutants and allergens entering from the loose edges. Now you must be wondering “What size air filter do I need” To answer this question you can read below as we explain all the necessary things like the items required for measurement, steps for taking measurements, and share some valuable tips with you for having proper measurements.

Items Required For Measuring

Items Required For Measuring

When you are measuring an air filter it is important that you have certain items to take the proper measurements of your custom air filter. Below you will see a list of all the necessary items to create an air filter size chart.

Measuring Tape or Ruler: You will require a measuring tape or ruler to take the right measurements of the length, width, and depth of your custom air filter. 

Flashlight: A flashlight will help you to see the dark areas especially when your HVAC system is installed in a place where there is very little light.

Ladder: You will need a ladder and if you do not have a ladder then you can use a step stool. This becomes mandatory when your HVAC system is placed at a height that you cannot reach without using a tool like a ladder. 

Pen and Notepad: While taking the measurement it is important that you create an air filter size chart by noting the size on your notepad.

Old filter: If you have the old filter available then it can help you as a reference while selecting the new air filter.

Steps To Measuring For A Custom Air Filter

When you have all the necessary items to take the measurements of your custom size air filter then you can start taking the measurement by following the simple steps that are mentioned below:

Step I: Switch Off The HVAC System

The first step that you should take to measure the size of your custom air filter is to switch off the HVAC system. You need to make sure that you have completely cut off the power so that your HVAC should not accidentally turn on while you are measuring the size of your air filter. It is not safe to work on an electrical appliance while the power is switched on. Turning off the HVAC system will reduce the risk of any accidents and prevent you from getting injuries. Once you are completely sure that the power is off, you will be able to calmly take accurate measurements to make sure that your custom air filter will fit perfectly.

Step II: Locate The Air Filter Slot

The next step you need to take while taking the measurements of the air filter is to locate the slot of the air filter to decide the size of the custom air filter and make sure that it will fit perfectly with the HVAC system. If you choose a filter that is too big or too small then it will not be able to fit the slot and will allow the unfiltered air to enter the room. The easy access to dust, allergens and other particles can not only reduce the indoor air quality but can also be injurious to your and your loved one’s health. Increasing the risk of respiratory infections, asthma, and other dangerous diseases. 

Step III: Remove Any Existing Filter

It is one of the most important steps to measuring the custom air filter. Always remember to remove the old existing air filter before you measure the size of your custom AC filter. This will help to measure the exact dimensions by checking the frame of the filter. In most of the air filters, the custom air filter sizes are printed on the side of the filter frame. When you remove the existing filter then it also allows you to check for any kind of obstructions and unique fittings in the slot that might affect the size of the air filter. By having a clear slot you will be able to measure the accurate measurements which will lead to a proper fitting of the new air filter.

Step IV: Measure The Dimensions: Width, Height, And Depth

It is important that you measure the dimensions like the height, width, and depth of your custom air filter. This will make sure that the new air filter will be able to fit correctly with your HVAC system. A properly fitted air filter will work perfectly in capturing all the pollutants effectively which eventually helps in improving the air quality. If you have an improperly sized air filter then it will not only affect the air quality but can also reduce the efficiency of your HVAC system which will lead to an increase in the energy bills. This can also increase the risk of mould, bacteria, and other viruses which can cause harm to your health. So, it is extremely important that you take proper measurements. 

Step V: Recheck And Confirm Your Measurements

The last step for measuring the custom air filter is to recheck and confirm that all the measurements that you have taken are correct. This will let you have a perfect fit custom AC filter for your HVAC system. You need to make sure that there is no room for error in the dimensions like the length, width, height, and thickness of your air filter. Even the smallest mistakes in the measurements can lead to big problems. An incorrect-size air filter will not be able to seal properly which will allow pollution like dust, debris and allergens to bypass the filter and enter your living space. A compromised air quality reduces the efficiency of your HVAC system and can become the reason for damage to your health.

Tips For Proper Measurements

Now that you have learned about the steps that you need to take to measure your custom air filter. Here are some valuable tips which will help you with the task 

  • You need to make sure that you are using high-quality measuring tape to take the measurements otherwise you might end up noting down wrong details.
  • When you are entering the measurements note it down in the format “width x height x depth”. This will help to avoid any confusion while placing the order.
  • To prevent any confusion it is best to take the measurements in millimetres instead of inches. 
  • There can be lots of dust and debris around the filter so it is best that you wear gloves while taking the measurements. This will keep your hands clean.

Final Thoughts

Here you have gained knowledge of how to measure for custom air filter sizes. It is important to remember all the information mentioned above like the items that will be required for taking the measurements. The essential steps that should be taken like powering off the HVAC system to be safe, locating the slot of the air filter, removing the old filter, taking proper measurements of the dimensions like height, width, and depth and lastly double checking to make sure that all the information is correct. You also learned about some tips to help you measure the custom air filter. When you keep all these things in your mind you will be able to order the right custom AC filter for your HVAC system and enjoy fresh and healthy air.

Frequently Asked Questions

To measure the effectiveness of an air filter you need to check the MERV “Minimum Efficiency Reporting Value” rating. This system is particularly built to measure the ability of the filter to catch particles that size between 0.3 to 10 microns. When an air filter has a high MERV rating that means that the filter can work more effectively at catching the small particles.
There are a variety of measurements of air filters and some of the most common air filter sizes are 24×24, 20×30, 18×30, 16×24, 14×20, and 10×20. These measurements showcase the length, width, and thickness of the air filter.
You can calculate the efficiency of your air filter by comparing the weight of the dust that is captured by the filters with the weight of the dust provided by the air cleaner. The efficiency of air filters is represented in percentages which creates a difference between them.
Yes, the depth of an air filter matters as the thickness of an average air filter is one inch thicker, you can select a filter that is about four inches thicker. This quality will give more space for the air filter to operate. Because of this, the air filter will be able to collect more dirt and other kinds of debris from the air while not causing any restriction in the airflow of the furnace.

When you are choosing an air filter it is important to you should consider these major factors like the

  • Size and model of the air filter
  • The originality of the air filter
  • Air quality of the home
  • Particular requirements for breathing.
  • The type of air filter
  • The performance of air filters
  • Cost of repairment and replacement
It is important for you and your loved ones to check the quality of your air filter. There is a simple and effective way to test if the purifier is working to its full capacity or not. All you need to do is to check the airflow that is coming out from the air purifier. Most of the air filters have fans that help in pulling the pollutants and contaminants from the air and offer you clean air to breathe.

You may also like

Logo-White
Australia Day Out is your ultimate online resource for all things related to exploring and experiencing the beauty of Australia. We will showcase the best that this remarkable country has to offer. Whether you’re a seasoned traveller or planning your first visit, our comprehensive guides, insightful articles, and insider tips will help you make the most of your time in Australia.
Copyright ©2024 – Australia Day Out All Rights Reserved.
Need Help