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How Often Do I Need to Change My Air Filter?

You probably know pretty well that you should be changing your furnace and air conditioner’s air filters quite frequently. But exactly how often is “frequently”? Well, if you’re looking for a definitive answer, then the team at signature HVAC is ready, as always, to provide!

Is your HVAC system ready for routine maintenance? Contact our certified HVAC specialists online to set your appointment!

How Often Should I Change My Air Filter?

Okay, so maybe definitive answer is a bit strong. Truth is, it’s difficult to give you a hard number that applies to each and every home. There are a lot of factors at play here that can change the answer, since each home, heating system, and general daily operation is going to differ.

If you’re fine with a “good enough” answer, it’s best to go ahead and do it every month, or every two months if you’re not in a busy home. But if you want more detail, you’re going to have to consider:

  • The type of filter you use. The standard fiberglass filter does a decent job, but it gets gunked and begins losing effectiveness very quickly. If you use these in your home, then monthly is your answer. We’d recommend swapping to pleated filters—they last longer, and do a much better job.
  • How busy your home is. Are there a lot of occupants? Pets? Do you smoke in the home? All of these are going to play a part, and the more you say yes, the more often you should be changing your filter.
  • Your indoor air quality. If you wrestle with a dusty, musty, or older home, you’ll probably need to change your filters more frequently.
  • The local conditions. The spring and summer seasons here in West Chester can be a bit…well, pollinated. In the peak seasons, changing your filter more often will yield some good results.

Why Is This So Important?

If you do any single thing as a homeowner for your HVAC system, this should be it! Why? Because the filter is responsible for a tons of things. An effective filter will:

  • Boost energy-efficiency
  • Improve air flow
  • Protect your system
  • Improve indoor air quality

A lot of benefits for one little, inexpensive filter. It’s the reason we really hammer the point home on this one. Ever changed your filter? If not, don’t worry, it’s really easy and takes no time at all! All you need to do is:

  • Remove the blower compartment plate—it’s usually on the lower half of a furnace or AC.
  • Inspect the current air filter for its size. You may need to measure it yourself, but many display the size in the top corner of the frame.
  • Go get filters in the correct size. As we suggested before, pleated filters are the best. Be sure to not get HEPA filters. The rating looks good, but these are for industrial use, and will cause a furnace breakdown in a hurry if used in the home.
  • Slide out the old filter, and put the new one in. Replace the cover plate, and you’re done!

HVAC Services in West Chester, Pennsylvania

Has it been a while since you scheduled routine maintenance for your home system? If so, you should get on that! The filter change is critical, but nothing even holds a candle to professional service.

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Real Reviews
Verified Review Buzz Reviews

"I highly recommend Signature for HVAC service. The entires experience with Signature has been exceptional. The process was very customer focused starting from Scott McHale's engagement to organize the project to replace our old A/C, to an professional job John & Matt had done in installation, and Bob Seeger'r post installation service to troubleshoot the air flow damper, great job."

-Hosum Li

"Very confidant! Our technician Bob Seegar was great."

-Debbie Kaba

"Joe has been servicing our geothermal from Signature since the initial instalation. He is by far the best. When they call to schedule our bi yearly maintenance they know to send Joe. Not only is great at his job he has become a friend. Thanks Joe!!!"

-jim paolella

"I would highly recommend Signature for all HVAC needs."

-jim paolella

"Bob Seeger was our technician this time around. His level of professionalism was exceptional - it really stood out! Overall we are very happy that we switched to Signature several years ago!"

-Mark Kenney

"The Signature techs who come out to our house are always top-notch professionals. Very courteous, careful, and thorough. They always provide great explanations of the work that they are doing. I never feel like I am being pressured into unnecessary work or equipment replacement (like I used to feel with Service Experts). Today, Wade was the tech who came out. He was here exactly on time at 8am, and was done within an hour. Great work and another great service experience from Signature! Update 9/27/2016 - Today Bob Seeger came out to service our system in preparation for the winter. I was extremely impressed by his professionalism and courtesy. Before he started, we sat down and he clearly explained what he would be doing as part of the maintenance, and we agreed upon the need to replace the filter on the main unit, and also to perform humidifier maintenance as part of the work. After the work was complete he made recommendations for overall system enhancements that we should consider. Signature really has top-notch people working for them, and I continue to be extremely happy that we switched over to them several years ago."

-Mark Kenney

"Bob Seeger was our person to service our furnace and water heater. He showed me a problem with our water heater that could have been a major problem. He was very honest, great and so efficient! He fixed the problem. I am kind of hoping he will be the one to work with in the spring."

-Debbie Kaba

"Always feel confident with the work performed by Danny from Signature."

-William Stolting

"Bob was quite knowledgeable of the type of geothermal system that I have in my house. Before completing the annual maintenance/tune-up that I had requested, he asked relevant questions about my geothermal system (e.g., date of installation, last service, temperature preference, electric usage, etc.). After inspecting and servicing my system, Bob explain service that my system needed now and recommendations that would benefit my system. He explained the options in a non-pressured approach, as well as, the benefit in joining Signature HVAC's service plan which was helpful. Throughout the service visit, Bob was courteous, friendly and respectful. My wife and I were very satisfied and we plan to continue to use Signature HVAC in the future."

-John Schmitt

"Bob did an excellent job. He showed up on time, was courteous, and respectful. I recommend using Bob S from Signature Heating and Air-conditioning."

-Dennis Carlson

"Great service as always. Always prompt and knowledgeable."

-Adam Lusk

"Bob was very professional and informative on the heating & air condition job at my house. He is a very nice and caring person! Thank you!"

-Colleen Esgro

"Your whole team is outstanding."

-John price

"Daniel Cross (Signature) completed a thorough and quick fall service on my heating systems. What I liked best about Danny is that he spoke to me as a knowledgeable customer rather than treating me like a clueless homeowner. So refreshing to be treated with respect by an HVAC provider! He had an opportunity to "upsell" me on a service, but was honest and told me that it wasn't valuable in my situation. I would certainly trust him to service my equipment again, and would definitely recommend him to a friend."

-Susan Wentz

"Thanks again for walking me through the process and pointing out what was going on in my system. Mold be gone! Professional and friendly service. Thanks for your help."

-Mia Bosna

"Travis is another courteous, fine professional working for you!"

-John price

"We have a by-annual cleaning/tune-up contract with Signature for care and maintenance of our heater/air conditioning units. We have found this company to be excellent in their service and their very knowledgeable , friendly technicians. We highly recommend ."

-Ric DeAngelis

"We are very pleased with Signature and their very knowledgeable Technicians. We will be continuing our By-Annual service/tune-up with them...."

-Ric DeAngelis

"I have used Signature for about 10 years now. They provide excellent service. Bob Seeger was my most recent technician and he was on time, polite, informative, and technically proficient. I highly recommend signature for your HVAC needs. I have geothermal, and they are excellent at this technology."

-Charlie Phillips

"Mike B came out for the biannual check of the upstairs system--we had replaced the downstairs system in June---we are very satisfied. Mike was thorough, very professional, answered all my (sometimes inane) questions and kept the house clean. Good job Mike and thanks."

-sylvan hurewitz
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