Why Is My AC Blowing Hot Air?

Why Is My AC Blowing Hot Air?

Read Time:5 Minute, 13 Second

The most common cause of hot air blowing out of an AC system is a lack of refrigerant, however, you may also have a condenser problem.

An electrical circuit has been triggered. In this blog, we’ll take a closer look at each of these issues, hoping to help you determine why your air conditioner is blowing out hot air and what you can do to fix it.

Why Is Your AC Blowing Hot Air?

Compressor Issue

If the compressor is old or defective, it cannot circulate the refrigerant properly, eventually leading to the loss of the cooling capacity of the air conditioner and the release of hot air.

A defective, failing, or old compressor will not be able to compress the refrigerant in your A/C system effectively to deliver the clean air you require.

Clogged Evaporator Coil

When the hot refrigerant reaches the outdoor unit, the condenser coil helps to conduct the heat to the outdoor air.

Unfortunately, if the evaporator coil becomes blocked with filth, it prevents heat transfer from the air to the refrigerant. This causes heat from your residence to be lost and unconditioned (heated) air to be recirculated into your home.

Your Thermostat Is Setup Incorrectly

The very first issue you should check is the thermostat, which may seem self-evident. If your air conditioner is producing hot air, it’s possible that the thermostat was set to “heat” by mistake.

If that’s the case, it’s a simple remedy you can do on your own. Reset the thermostat to “cool” and check if the air conditioner starts to produce slightly cooler air again.

You should also check that the batteries are charged and also that the temperature is not too extreme. Keep in mind that the “auto” feature only uses the fan when air is exposed to the heat.

The “on” setting implies the fan will operate continuously to circulate the air, even if the air conditioner or heater is turned off. Experts advise using the “auto” setting the majority of the time and shifting to “on” just when required.

You’re Running Low on Refrigerant

When your air conditioning system is pumping warm air, the refrigerant contents in your unit may be inadequate. This typically means your system has a refrigerant leakage!

If this is the case, your air conditioner will keep running and blowing heated air to attain the temperature you set on the thermostat.

How to Fix This Issue?

Whenever the entire outside unit isn’t working – not just the fans or coils – check to see whether the breaker has failed and, if so, try to restore it. The circuit breaker is normally a grey panel with a door in a low-traffic area of your homes, such as the cellar or basement.

  • Inspect and re-set the disconnection box on your air conditioner
  • There are some things you can do before hiring a professional if your coil has frozen
  • To melt the ice, switch off the air conditioning and switch on a fan
  • Check to see whether your vents are free and if your filters are clean (replace if they are)
  • Make sure nothing is obstructing airflow into your supply and outflow vents (furniture is most commonly to blame)

How Can I Keep My Air Conditioner From Blowing Warm Air in the Long Run?

Clean the clogged air filter, which is the easiest and most critical thing you could be doing to maintain your air conditioner in good operating condition. Set quarterly reminders and keep spare filters on hand for convenient swapping.

It’s also a good idea to schedule expert maintenance in the spring, before your air conditioner’s duty increases for the summertime (especially if your AC system is old).

  • A skilled HVAC technician will examine your:
  • Fuse box for thermostat
  • Levels of refrigerant Compressor
  • Also, clean the coil on your air conditioner to keep it from freezing
  • Also, clean the drain line on your air conditioner to keep it from leaking water

Why Is Your AC Not Blowing Air?

The following are the most typical reasons for your air conditioner not blowing:

Issues with electricity

Though finding your air conditioner not working during a heatwave may make you panic, there’s no need to be concerned. The reason your air conditioner isn’t blowing may be a simple one that may be fixed for free or at a moderate cost.

When the weather becomes extremely hot and humid, most people turn on their air conditioners 24 hours a day, putting pressure on the electrical grid. As a result, power disruptions are common during hot spells.

It’s possible that your thermostat’s timer or scheduled settings need to be adjusted if there was a power failure.

Check to See if Any Vents or Registers Are Obstructed

When you rearrange furniture around a room to get the greatest seating, you often forget about the location of vents and registers. The flow of air will be restricted if the sofa is placed in front of a vent.

Perhaps the Fan Isn’t So Great

Blower fans circulate air via your air conditioning system’s ductwork. If the shafts of the fans are filled with dust and filth, they are unlikely to rotate at their maximum speed, which will obstruct ventilation. A broken blower motor won’t be able to pump air through the ducts and into your room.

Coils That Have Become Blocked

Your AC coils (including indoor and outdoor) are crucial in the release of heat, as previously indicated. They won’t be able to soak up or heat up if they’re caked in dirt, so they’ll have to strain themselves longer and harder to keep your room chilly.

Dirty coils might eventually cause airflow issues, causing the AC system to work overtime to satisfy the cool air demands set by the thermostat. An AC that isn’t blowing may be due to clogged coils.

Final Thoughts

As you’ve seen, there is a multitude of reasons why your air conditioner isn’t operating, and these functional difficulties can impact you in terms of convenience and economy.

Though you can fix some of the minor issues yourself, most of the issues are better handled by a professional HVAC technician.

About Post Author

Dr. Ethan Turner

Meet Dr. Ethan Turner, a seasoned Pharm.D. professional with a passion for content writing. With years of expertise, Ethan has honed his skills in crafting engaging blog posts that seamlessly blend pharmaceutical knowledge with captivating storytelling. Join him on a journey where years of experience meet the art of compelling blog writing, as he continues to share insights and expertise with a creative flair.
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