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How Do I Safely Change My AC Air Filter?

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How Do I Safely Change My AC Air Filter?

Posted On: April 27, 2024

How Do I Safely Change My AC Air Filter?

Changing your AC air filter is a straightforward task.


Here's a step-by-step guide to safely change your AC air filter:


Turn Off the AC Unit: Before you begin, switch off the power to your HVAC system.


You can do this by turning off the thermostat or switching off the power at the breaker box.


Locate the Air Filter: The air filter is typically located near the air handler or furnace.


It may be behind a vent grille on the wall or ceiling, or it could be located inside the HVAC unit itself.


Refer to your HVAC system's manual if you're having trouble finding it.


Remove the Old Filter: Carefully slide out the old air filter from its slot.


Pay attention to how the filter is positioned so you can insert the new one correctly.


Inspect the Old Filter: Take a moment to inspect the old filter.


If it's dirty or clogged with dust and debris, it's definitely time for a replacement.


Choose the Right Replacement Filter: Make sure you purchase the correct size and type of air filter for your HVAC system.


The size is usually printed on the side of the existing filter or can be found in your HVAC system's manual.


Insert the New Filter: Slide the new filter into place, making sure it's positioned correctly with the airflow arrow pointing towards the blower motor.


Close the Filter Compartment: Once the new filter is in place, close the filter compartment securely.


Turn On the AC Unit: Restore power to your HVAC system by turning the thermostat back on or flipping the breaker switch.


Check for Proper Installation: After turning on the AC, make sure there are no unusual sounds or issues.


Also, check that the air is flowing properly from the vents.


Regular Maintenance: Set a reminder to check and replace your air filter regularly, typically every 1 to 3 months, depending on your usage and the type of filter you're using.


By following these steps, you can safely change your AC air filter and ensure your HVAC system runs efficiently.


If you're unsure about any step or encounter any difficulties, don't hesitate to consult a professional HVAC technician.



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by Private User on Twintech Heating and Cooling

I left a live chat message on their website that my air conditioning was not working. Within 1hr a representative called me to discuss my options.
The next day he came to the house to review my needs and give me a price for a new system. Price quoted was less than I expected and the installation was completed the following day. I found their salesman and the installers very knowledgeable and easy to deal with. All my questions were answered. Everything was properly explained in regards to what unit was needed and why, along with instruction where needed for use.
The installers made sure everything was working properly before they left.

by Samta Chanana on Twintech Heating and Cooling

This is to thank Twintech Heating and Cooling for their exceptional and timely service. Mitch, their technician was very courteous and generous with his time right from his first meeting with us. He not only took the time to check everything but also educated us on why we needed what he recommended. Greg and Mitch graciously accommodated us on our requested day and time for job to be done. They were both very courteous and responsive to our needs and special requests especially in a tight spot. The job was finished neatly and on time. Thank you Twintech for your great service !

by Private User on Twintech Heating and Cooling

They came the day and time they had planned for us and were very fast and efficient! The AC works amazing and it is amazing during the heat of the summer we have already got! Thanks for everything you did for us!

by Private User on Twintech Heating and Cooling

Would recommend this company to friends and family in a heartbeat. Very professional , on time and left no mess when the job was done.

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Great customer service. Responsive and professional. I would highly recommend Twintech, I used them previously for repair service and a new air conditioner- very satisfied.

by dianeramsden on Twintech Heating and Cooling

Our air conditioner failed. Made a call and within 15 min a technician was at our door.
The issue was fixed and many suggestions were provided.
Thanks to Mitch. Great service !

by Kazuko on Twintech Heating and Cooling

Our furnace was rattling, as soon as we put our air conditioner on this past week. We had researched looking for a company that was Registered with Better Business Bureau, and this company TwinTech, had A+ Rating. Scott, was immediately helpful via text/phone and sent his technician as soon as he was able...Mitchell/technician provided great professional service. Thank you TwinTech.
Sean and Debbie

by ANOOP on Twintech Heating and Cooling

I contacted various companies when looking to install a new furnace and I found Twintech to be transparent with their communication and approach. They had options to suit my various requirements and the price vs quality was very good. The after installation communication was also very good and they answered all queries I had.

by Private User on Twintech Heating and Cooling

My furnace broke down last month. The team was quick to respond, courteous, professional and mindful of COVID-19 concerns. I highly recommend them if you are considering replacing or servicing your HVAC equipment.

by Private User on Twintech Heating and Cooling

I was very happy with the installation and price. I would definitely recommend. Thank you Twintech.

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by Aaron on Twintech Heating and Cooling

We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.

by Linda on Twintech Heating and Cooling

Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!

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.

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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!

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