I have been cleaning air ducts and furnaces for the past five years, and one of the most common questions I get asked is, “What is the best furnace filter / AC filter to use for my system?” After seeing just about every type of filter, I can tell you that there are basically three types of filters to choose from.
We see many systems using the cheaper furnace filters that are simply a fiber filter. If you look at the photo of the filters to the left you will see that you can see right through them. They are a very inexpensive filter, but they do not filter out much dust or lightweight particles.
This type of AC filter will result in your house getting dusty very quickly after you clean it, and if you have allergy sufferers, this filter will not help them at all. My professional opinion is that this type of filter is the worst filter to use. While it is very cheap, it allows the most particles and dust to pass through.
The pleated filter is the option we recommend to our air duct cleaning customers. This type of filter is a disposable filter that needs to be replaced about every three to four months, but it is best at capturing the most dust and allergen-causing particles. If you look at the picture to the right you will see that it is cloth-like and has support on the backside to prevent the filter from being pulled into the fan when it gets dirty, restricting air flow.
I am sure almost everyone has heard about “Electrostatic” filters. Electrostatic filters are also called washable filters and they are meant to be cleaned and reused. They are not disposable but at some point in time they will eventually need to be replaced.
This type of filter must be washed out on a monthly basis. While some air duct cleaning companies try to sell customers on electrostatic filters as an upsell, we recommend against them. The reason is in the fact that they need to be washed out every month and they do NOT block out any more dust or allergen particles than a good pleated filter. In fact, if you don’t wash them out every month, they will plug the filter – causing a restriction in the air flow.
At the end of the day, the pleated filter is our filter of choice for AC filters as it only needs replaced every three months and it blocks out the same amount of dust and allergen particles as an electrostatic filter. You don’t have to go through the hassle of washing them like you do electrostatic filters. It takes thirty seconds to remove the old one and put in a new one.
We like the “Filtrete” pleated air filters sold at Lowes. Specifically the Filtrete 1500 Allergen, Filtrete 1900 Premium Allergen, and the Filtrete 2500 SMART Premium. These filter block out all the bad things that cause breathing problems. Not only that, but you can download a Smart App for your phone that will remind you when you need to change it. Check out the various filters and what they block out by going here: https://tinyurl.com/y8omtay3
I hope this helps you in figuring out which furnace filter type is best for your system.
- Posted by admin
- On January 8, 2019
- 0 Comments