When we talk about regular HVAC maintenance, cleaning/changing of Filters comes on top of the list. And that is because the efficient functioning of a whole home heating & cooling system depends to a great extent on clean and efficient filters. And did you know that one of the main causes of sudden HVAC appliance break down has been recorded to be dirt and debris? Which indirectly indicates towards the absence of regular filter cleaning/maintenance. So, how does an Air Conditioner filter works, what filter sizings and qualities are available, which one can work best for your system and how often should you replace your filters? This blog is all about Air Conditioner filters so brace yourself!

What does an Air Conditioner filter do?

Air Conditioner Filters help keep your indoor air as well as your HVAC components clean. For this purpose, a filter is installed between the return air duct and Air Conditioner. The indoor air that rushes towards the AC passes through this filter which is designed in a way so as to capture the dust, debris and other such air pollutants. The cleaned air reaches the Air Conditioner and after getting cleaned comes to the indoor.

MERV ratings and Filters

The Filters have been classified into a range of efficiency ratings; MERV rating from 1-20. The MERV rating filters of 8-13 are considered extremely good for residential use. Lower than 8 MERV just perform a formality filtration and don't do enough good to make the indoor air clean. However, there's one thing that should be noted. And that is while purchasing filters, the system requirements should be known. Usually, the Filters any higher than 13 MERV are not suitable for conventional residential HVAC setups. Installing them can actually block the airway resulting in motor damage.

How often should I change/clean my filter?

The time of replacement of filters varies from home to home. It depends on what kind of indoor activities take place in the home, whether the home is in a commercial area, how often the HVAC appliances are used and some other factors. But roughly, an Air Conditioner filter should be replaced once in 3 months. For filters of different sizes, the following routine can be followed;
- For filters of 1-inch width - 1-3 months
- For filters of 2-inch width - 3 months
- For filters of & 3 & 4 inch width - 6-9 months
- For filters of 5 & 6 inch width - 9-12 months
But as said, the duration can vary and since the routines and practices change too, it is recommended to check your filter once a month to see if it's dirty enough to be replaced.

How do I find out my Filter size? 

Well, most homeowners never get to know their filter size and keep purchasing filters of random sizes. This is dangerous for your system and safety. But as it takes money to consult a professional regarding the filter sizing and calling him home, homeowners prefer to follow their estimates. The interesting thing is you can find out the size all by yourself that too very easily. Just slide the already installed filter out of the compartment and check the frame of the filter. Almost always, the size is printed on the frame in length x width x format! Problem solved!

If there's something that worries you regarding Filter selection, Filter replacement or upgrading your Filter type, connect with us today at 1-855-245-4328