It would be ideal if everyone changed out their air filter on a monthly basis, but that doesn't always happen. Life gets busy, and it is very easy to overlook simple maintenance issues around the house. If you aren't sure when the last time was that you changed the air filter, here are a few good indicators that it’s time to replace it with a new one:

Musty Smells

If the air that is coming out of the vents when you turn on the ac or heat has a musty smell, you will definitely want to figure out why. A dirty filter simply cannot clean the air properly before it circulates throughout the home, so it is a likely culprit. Changing to a new filter is often an easy fix to those unpleasant smells.

Dusty Surfaces

Dust is common on surfaces, and depending on where you live, it could collect frequently. However, if you are running the air conditioner or the heating and notice that dust is piling up quickly, it could be from an inefficient system. The first thing to check is the air filter in the furnace. If that appears dirty, simply replace it with a new one. Another area to check is the air ducts. You may want to consider having them professionally cleaned.

It’s been a Few Months

If it’s been a few months since you last changed out the air filter, then it’s safe to say that it’s time to switch it out with a new one. If you can’t recall exactly when you changed it, just take a quick look at it and do a visual check. If it’s dark and dirty, then you definitely want to replace it. They are inexpensive, and it’s a good idea to have a few new ones on hand so that you can save yourself the hassle of running out to the store.

Don’t suffer with stuffy noses, sneezing, and dusty surfaces in the home. Take some time to find the source of the problem, starting with the air filter in the furnace. It’s an easy and quick fix that will help you breathe easier inside of your home.