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Why Is My Central AC Unit Acting Up?

Why Is My Central AC Unit Acting Up?

It’s been hot outside.

You’ve spent the past five days camping, hiking and fishing, and while you’ve certainly enjoyed the time you’ve had outdoors, you’ve been looking forward to getting home, hopping in the shower, cranking the AC and sitting down on your couch.

It’s all you’ve been able to think about on the drive home.

Yet when you arrive at your house, you notice that something is amiss. Basically, the temperature inside is nearly identical to the temperature outside.

This is not something you’re excited about.

At this point, you’re wondering what you can do. You’ve tried tinkering with the thermostat (but haven’t had much luck). When you are able to get your central AC unit to turn on, you quickly realize it isn’t blowing cold air. Two minutes later, the entire system quits and shuts down.

This is not how you envisioned spending the rest of your day—especially since calling an experienced HVAC technician to come to your home to repair your cooling system was not on your top three list of things you wanted to do this afternoon.

Common central AC unit problems

First things first.

Have you checked the air filter? If you haven’t done that, and you can’t seem to remember the last time you checked, replaced or cleaned your air filter, this may be the cause of the problem.

Remember, the job of your air filter is to remove dust, debris, spider webs, pollen, pet dander and other types of contaminants from the air inside your home. When an air filter goes too long without being changed, it’s bound to become clogged.  Depending on how clogged it is, it may prevent your AC from pumping cool air into your home.

Have you been keeping up on your maintenance?

Think about it. If you go too long without changing the oil in your car, your car is bound to start giving you problems. The same holds true for your HVAC system.

When a central AC unit isn’t properly, the motor will need to work harder. In some cases, if the motor needs to work very hard, it will trip your circuit breakers.  This is another common reason that central AC units decide to stop blowing cold air.

Call JM Heating & Cooling Today

Our company has been serving Longmont Colorado and its surrounding cities for more than a decade. We’re a family owned and operated business that’s committed to providing the highest levels of customer service and care to all of our clients.

If you need help troubleshooting the cause of your central AC unit problems, we can help. Or, if you’d prefer to schedule a time for one of our staff members to come to your home and perform an evaluation that way, we’re happy to assist.

Call JM Heating & Cooling today at 303-434-0115 to speak with a local customer service agent in your area. Or, if you’d prefer to reach us by email, we can be contacted at Matthew.siemens@yahoo.com.



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  • Dennis Sanchez
    August 6, 2019, 6:16 pm REPLY

    I never knew that if the air filter of the air conditioning system becomes clogged then cool air will no longer be able to be pumped into your home. Every time I visit my parents, I have noticed that their house is warmer every time even though the air conditioning is running. I’ll have to suggest to them that they call a technician to replace their air filter.

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