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How Often Should You Change Your Air Filter?

The answer to this question depends on what type of filter you’re using, whether or not you live in an area with bad air quality, and how many people occupy your home. If you’re unsure, it’s always better to be safe than sorry and change your air filter more often than you probably should.

Here are some steps to help you decide how often to change your air filter based on the type of filter you have:

Do You Have Pets?

If you have pets, one of your biggest enemies when it comes to keeping clean air in your home is pet dander. If you’re allergic to animals, anything above 0.5 grams per cubic meter of air is considered unhealthy. 

But even if you aren’t allergic, exposure to a lot of pet dander has been linked to respiratory problems like asthma. So, in general, if you have any pets, especially furry ones, consider changing your filter more frequently.

If you have pets, it’s essential to change your filter more often than those without furry friends. If you smoke or are in a very dusty environment, it is also good to change your air filter more frequently.

How Big Is Your Home?

The size of your home should dictate how often you change your filter. Filters are labeled with a rating to help you figure out how large they are and how long they can go between cleanings. 

Remember that these numbers aren’t exact. Don’t blindly replace filters every three months, for example. If it smells bad or gets clogged often, it’s time to replace it! In addition, don’t be afraid to get your HVAC professional involved if you have questions about when to switch them. 

They’ll likely prefer dealing with dirty filters to having one burst on a client’s ceiling at 2 a.m. on a Saturday. Filters typically cost $10–20 depending on your HVAC unit, so changing them when they need it is certainly better than waiting too long and incurring expensive repairs down the road.

Where Do You Live?

The answer to that question might determine how often you change your air filter. Depending on where you live, some filters may need to be changed every month or two. Other places may see up to six months between filter changes.

If you live in a place with notoriously dirty air (like a big city), you’ll probably want to change your filter every few weeks or even more frequently than that. On the other hand, cleaner cities and areas will likely mean more extended periods between filter changes. 

Call an HVAC professional if you have any doubts about when it’s time for a new filter. You’ll also want to note precisely what type of filter you’re using. Some air filters last much longer than others, especially those cleaned regularly.

So, changing air filters depends on your home and what you have in it.

There’s no definite answer for how often you should change your air filter. The frequency with which you need to swap it out depends on what kind of filter you have and what’s living in your home.

For example, if many people smoke in your house or pets run around, air filters will be more effective if they’re changed more frequently. If you don’t have any allergies, though, you can probably go longer without changing yours. 

As a general rule of thumb: If only two people are living in your house and one pet that doesn’t shed too much hair (or if someone has an allergy but isn’t allergic to pets), change your filter every six months; otherwise, do so every three months. 

Some things to look out for: Indoor air pollutants can get caught in your filter and build up over time.

Call Airsmiths Cooling & Heating today to schedule an appointment with one of our trained, professional HVAC technicians. We’ll come to your home and make sure that you have a clean, well-functioning air filter so you can breathe easy throughout every season. 

Our cooling and heating specialists are available 24/7 for your convenience. Contact us today if you want to change your air filters.

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If your Heating Or AC system is not keeping you comfortable schedule a service call today.

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(985) 400-5093

What our customers are Saying



5-Star Google Rated

We have a widely trusted name across St. Tammany Parish for our AC Repair, Quality Of Work & Honesty.

We Service All Brands

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Family Owned. Locally Operated

We are a multi-generational family-run business established in 1986, in Southeast Louisiana and serve both residential and commercial clients.

Trained & Skilled Technicians

Each of our technicians are trained, certified, and undergoes continual training to ensure customer satisfaction at all times.

Frequently Asked Questions

Regular maintenance for your heating and cooling systems is often overlooked and can go a really long way in regards to extending equipment life and maintaining operating efficiency. As one of our maintenance contract customers, you get priority scheduling, discounted repair rates, discounted equipment purchases, and much more.

Warranty terms vary greatly depending on the manufacturer and installing dealer. We can verify all warranty terms by using the model and serial numbers located on the equipment. If you have a home warranty company you should contact them directly for service.

Our service fees range from $95-$145 and it covers our initial assessment of the system. With a proper assessment, we can then provided a flat rate cost to repair the system.

We service ALL makes and models! We are also a Carrier Factory Authorized Dealers & Carrier Infinity Product Specialists. Our well trained and Nate certified technicians can work on all systems

What services do you need?

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Repair & Replacement Team Today!

When you’re looking for HVAC services in Mandeville or St. Tammany Parish that you can trust and afford, call our team here at Airsmiths Cooling & Heating. We ensure you get the best from your HVAC system. No matter what you need assistance with, we can help. Whether you require urgent repairs or you’d like to find out more about our cost-saving heating and cooling systems, we’ll be there for you.

Reach out to the experts at Airsmiths Cooling & Heating in Mandeville, serving the St. Tammany Parish area, and experience why we stand out as the top choice for HVAC services and plumbing. Don’t wait any longer, contact us today and discover unparalleled service and expertise!