$49 / month O.A.C Including Install
$49 / month O.A.C Including Install

How Often Should I Replace my AC Filters?

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How Often Should I Replace my AC Filters?

Posted On: July 17, 2019

How Often Should I Replace my AC Filters?

If you own an AC unit, a common question you may as is, “how often should I replace my air conditioner filters?” That’s an important question to keep in mind for all home or property owners. Generally, it depends on a variety of factors, but, it’s definitely more often then you might think. A few of the biggest factors are how many pets (if any) live in the home, the level of construction and air pollution in the area, the average indoor air quality and what type of filter is being used.


It’s broadly recommended that you change your AC filters every 30-60 days, but sometimes, an annual air filter change can suffice. It really depends on the factors mentioned above. In a single occupant’s home with no pets, a good average for changing your filters is 6-12 months on average. An average suburban home may need a filter change every 90 days, and if there’s a pet in the home, every 60 days. A good way to know what’s right for your home is to check your filter weekly. If it gets to the point where you are unable to see light dispersing through it, it’s time for a new filter.


But, let’s take a look at the factor you may have the most questions about – the type of filters. On the packaging, all filters have a MERV rating [Minimum Efficiency Reporting Value]. The system is simple – the higher the number, the higher the filter quality is. However, the highest number does not always work best for your home. A filter with a high MERV rating can actually slow down your air conditioning system unless it is working in a system with high-efficiency. When you buy a filter, make sure it has a balanced MERV rating, ideally in the 6-8 range.


At Twin Tech, we often include a MERV 11 air filter with our installations. If there is no construction or pets, these air filters can last up to 1 year. This filter is 5 inches thick and can allow substantially more airflow than the typical 1 inch thick 3M. If your home air conditioner can carry up to 2.5 tons or more, you should definitely consider having a MERV 11 air filter, in order to increase air flow and remove heat efficiently.


Changing your AC filter is important for maintaining the air quality in your home. It helps your system run at the top of its performance range, which can even mean lower energy bills! If you have any further questions or concerns, you can set up a free, no-obligation consultation with a Twin Tech Heating and Cooling expert, or you can give us a call at 1.844.894.6832.




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See What Our Customers Are Saying:

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

by Anna Chin on Twintech Heating and Cooling

Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!

by Connor Agnew on Twintech Heating and Cooling

Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.

by Trevor Owens on Twintech Heating and Cooling

I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. I’ve used the company in the past for my furnace so I was happy when I recognized Greg at my front door. He’s great and the service is always top notch. I’d highly recommend using twintech for honest, superior service in the Durham region. Thanks!

by Nicole Alain on Twintech Heating and Cooling

I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!

by Courtney Parkes on Twintech Heating and Cooling

Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!

by Jacqueline Graham on Twintech Heating and Cooling

Twintech Heating & Cooling installed my furnace in 2022 and in fall of 2023 installed my Panasonic Heat Pump. Greg and Mitch did a great job. Helped me through the rebate process. Super happy with the Heat Pump. Only used my furnace 5 times this winter. Energy bills lower, carbon emissions lower.Thank you Twintech. I recommend highly!

by Bill Grainger on Twintech Heating and Cooling

Just had a new furnace installed by Twintech. I can’t express how great these guys are at what they do. From the sales to installation they were professional all the way. Very reasonable pricing and courteous during the installation and willing to answer any questions I had. Highly recommended !!!

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See What Our Customers Are Saying:

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

by Anna Chin on Twintech Heating and Cooling

Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!

by Connor Agnew on Twintech Heating and Cooling

Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.

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