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How Long Can My AC Run Before Breaking?

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How Long Can My AC Run Before Breaking?

Posted On: May 28, 2024

How Long Can My AC Run Before Breaking?

The lifespan of an air conditioning (AC) unit and how long it can run continuously without breaking depends on several factors, including the type and quality of the unit, how well it is maintained, the conditions in which it operates, and usage patterns. Here are some key points to consider:


Lifespan of AC Units

  • Central Air Conditioners: Typically last 12-15 years.
  • Window Units: Last about 8-10 years.
  • Ductless Mini-Split Systems: Generally last 12-15 years.

Continuous Operation

Most AC units are designed to handle continuous operation during periods of high demand, such as hot summer days. However, continuous operation can stress the system. Here’s what you need to know:


  1. Design and Capacity:


    • Proper Sizing: An AC unit that is appropriately sized for the space it cools will be able to run more efficiently and last longer.
    • Overworking: If an AC unit is too small for the space, it will run continuously trying to cool the area, which can lead to premature wear and tear.
  2. Maintenance:


    • Regular Servicing: Routine maintenance, such as cleaning or replacing filters, checking refrigerant levels, and ensuring all parts are in good condition, is crucial.
    • Professional Inspections: Having a professional inspect your AC unit annually can help catch potential problems early and extend the unit’s life.
  3. Environmental Factors:


    • Temperature and Humidity: Extremely high temperatures and humidity levels can make the AC work harder, reducing its lifespan.
    • Air Quality: Dust and pollutants can clog filters and reduce efficiency.
  4. Usage Patterns:


    • Thermostat Settings: Setting the thermostat too low can cause the AC to run continuously. It’s recommended to keep the thermostat at a moderate temperature.
    • Rest Periods: Giving the unit a break, even for a short time, can help reduce wear and tear.

Signs of Wear and Potential Breakdowns

  • Unusual Noises: Grinding, squealing, or rattling sounds can indicate mechanical issues.
  • Reduced Cooling Efficiency: If the AC isn’t cooling as effectively as it used to, it may be a sign of a problem.
  • Increased Energy Bills: A sudden spike in energy costs can indicate the unit is working harder than it should be.

Tips to Prolong AC Life

  • Use a Programmable Thermostat: This can help manage the AC’s workload by adjusting temperatures when you’re not home.
  • Improve Home Insulation: Proper insulation reduces the load on the AC.
  • Keep Vents Unobstructed: Ensure that vents and ducts are clear of obstructions to maintain good airflow.

In summary, while an AC unit can run continuously for long periods, especially during hot weather, it’s not ideal for the unit’s longevity. Proper maintenance, correct sizing, and mindful usage are key to ensuring your AC runs efficiently and lasts as long as possible. If you’re concerned about your AC’s performance or lifespan, consulting with a professional HVAC technician can provide specific insights and recommendations.



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See What Our Customers Are Saying:

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.

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!!

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See What Our Customers Are Saying:

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.

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!

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