Knowledge Builders

does the fan on an air conditioner always run

by Alisha Kirlin Published 3 years ago Updated 2 years ago
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The fan only runs when the system is on and not continuously. There is better dehumidification in your home during the summer months. When your fan is set to AUTO, moisture from cold cooling coils can drip and be drained outside. If your fan runs continuously, moisture does not have a chance to drip outside.

Why does the fan keep running on my air conditioner?

Why does the fan keep running on my air conditioner

  • Wrong setting. The fan already set to on. ...
  • Thermostat malfunction. Another reason for the continuous running fan of your air conditioner may be the problem in the thermostat.
  • The environment outside too hot. ...
  • Relay switch malfunction. ...
  • Short circuit. ...

Why is my air conditioning fan not working?

Why is My Air Conditioner Fan Not Working?

  • Reasons the Central Air Conditioner Fan Is Not Working. ...
  • Check Your Thermostat. ...
  • Circuit Breaker is Tripped. ...
  • Air Filter is Blocked. ...
  • Broken Fan Blade. ...
  • Burnt Out Condenser Fan Motor. ...
  • Frozen Evaporator Coil. ...
  • Compressor is Not Working. ...
  • Malfunctioning Run Capacitor. ...

Why is my carrier air conditioner fan not working?

Air conditioner fans not working can be a sign of a frozen evaporator coil. The evaporator coil sits inside your home within the air handler unit (furnace or fan coil), pulling heat and humidity from indoor air as it passes through. The evaporator coil can freeze up as a result of indoor blower fan malfunction, low refrigerant charge, low ...

How to fix your AC! outdoor fan not running.?

  • All Time Air Conditioning is an Air Conditioning Repair Service, Air conditioning contractor, Air conditioning system supplier, and HVAC contractor in Boynton Beach, Florida Phone: (561) 777-9888 Address : 2940 ...
  • Phone: (561) 777-9888
  • Address :
  • 2940 NW Commerce Park Dr #12, Boynton Beach, FL 33426
  • Hours :

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Should the air conditioner fan run all the time?

Running your system on constant fan will run air through your filter more often, reducing the amount of dust your family breathes in your home. 3. Reduced Allergies. A good filter reduces the allergens present in your home's air, which can help reduce the negative health effects of allergies.

How often should the AC fan run?

You shouldn't need to run your fan continuously (or even often) if you have a newer HVAC system. These systems have a fresh-air intake that brings in some outdoor air which might need to be cooled or heated. Running your fan can make it harder for your AC or furnace to handle this extra work.

Does the outside fan run when the AC is on?

Your split-system cooling system won't work unless both units – the indoor evaporator and the outdoor condenser/compressor – are operating. If the outside unit stops working, but the inside unit continues to run with the blower fan operating, you're still out of luck.

How long should fan run after AC turns off?

Your HVAC fan should turn on and off with the rest of your heating and cooling system. It's normal for the fan to kick on a couple of minutes before heating starts or to stay on for a couple of minutes after cooling stops, but your fan shouldn't run for hours on its own.

Should fan be on auto or on in winter?

When it comes to whether you should set your furnace fan to “on” or to “auto” in winter, the answer for me is “auto” because it's the move that has the most to do with energy efficiency. It is not, however, the only thing you can do this winter to bolster your HVAC system's energy efficiency.

Why is the fan on my outside AC unit not running?

If the fan doesn't start running, you may have a bad fan motor. If you have difficulty getting the blades to turn, there may be debris wrapped around the fan axle, or the motor bearings may be dirty or jammed.

Why is my fan not spinning on my AC unit?

Issues with the capacitor One of the most common reasons fans stop spinning is because of a dead capacitor. The AC's capacitors are small, cylinder components that send energy signals to power the fan motor and the rest of the AC unit.

Why is my AC fan not turning off?

The most common reason that your Air Conditioner fan won't turn off is because a stuck relay keeping the circuit closed. If it's not the relay, your thermostat likely has a shorted cable or needs to be replaced.

Why is my AC fan not running?

If the fan is the only thing running when the AC unit isn’t, there may be a faulty relay switch prohibiting the settings on the thermostat from being communicated to the fan. Another cause could be a wiring issue or a short circuit preventing the system from recognizing the on and off signals.

Why does my AC unit fan shut off?

Once you fix this setting, your ac unit fan will shut off when it recognizes the desired room temperature.

Wrong setting. The fan already set to on

When the fan of your air conditioner is set to on, the fan will continuously keep on running. While, when the fan of your air conditioner is set on auto, the fan will only run when the cooling component of your air conditioner is running.

Thermostat malfunction

Another reason for the continuous running fan of your air conditioner may be the problem in the thermostat. The thermostat is the part of the air conditioner which tells the whole unit to work together. When your thermostat is not working properly, it may not be able to maintain the temperature which you have set.

The environment outside too hot

The other reason for a continuous running fan of the air conditioner may be the temperature outside may be very hot. If it is very hot outside your air conditioner may not be able to maintain the inside temperature which you have set to, and the fan runs continuously.

Relay switch malfunction

Relay switch of your air conditioner may also be the reason for the continuous running fan. Though the electrical system of the air conditioner unit is separable from another unit. But, the relay switches are the one that gives the command to the air conditioner how to work.

Short circuit

Short circuit may also be the reason for your continuous running fan. If the system of your air conditioner is short-circuited, the commands you are giving to the thermostat is not getting to it. And, even when you switch the air conditioner off the fan will continuously run.

Why does my AC fan keep running when it is not running?

Leaving the fan running when the AC is not running is a sure way to increase the moisture in the air because any moisture in the system will evaporate and distribute back through your house. Humidity is actually reduced more when the AC is running on cool. And if your AC has a dry mode, it will leave in reduce humidity further.

Why does my AC fan keep going on?

Two, keeping the fan on continuously when the AC is not running evaporates the moisture that is normally condensed, and sends it back through the system. The result is higher humidity inside of the house, which means that the AC has to work extra hard when it kicks on to counteract the effect of the humidity.

What is fan mode on AC?

Fan mode on AC is simply a setting on your air conditioner that keeps the blower fan running regardless of whether the cool air is on or not. There are pros and cons for leaving it on. One application for running the fan on the air conditioner continuously is the ability to keep the temperature even throughout the house even when the cooling is off.

Why does my air conditioner have to be outside?

That is one of the primary reasons that air conditioning is known to be a source of indoor air pollution. Because the same air is being distributed through the system and throughout the house.

What to check if AC isn't cooling?

Another easy check is the HVAC filters. If they get to dirty, then the air can’t flow through the system properly and the system will continue to run trying to reach the desired temperature set on the thermostat. AC filters are a good place to start when the unit isn’t cooling right too.

Why is it better to run AC on auto?

Being that the AC he is one of the biggest energy hogs in the home, running the AC on auto, is usually the best choice because it keeps the utility bill down. There are several reasons for this. For one it takes extra energy to run the fan all the time, which means more power consumption. Two, keeping the fan on continuously when ...

Does an AC fan waste electricity?

Though the AC fan has a couple of good points work keeping the temperature even throughout the house when the AC is not on, it does tend to be a waste of electricity otherwise. Some systems with built-in air purification systems must have the fan on continuously to keep the air purifiers working efficiently.

Why does my AC fan blow back into my house?

Instead, it blows back into your house, and, as a result, your AC then has to work ever harder to suck that extra moisture out of the air.

How long does a fan run when it is on?

When you set your fan to “ON,” you’re telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. There are a few positives to this feature.

Why does my fan wear out faster?

You may feel a less even distribution of heating and cooling, because once the thermostat is satisfied, the fan stops moving air to other spaces in the home. More frequent starts and stops will make the fan wear out faster.

Why do you keep a fan on?

Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage.

Is it better to keep a fan on 24/7 or all the time?

This can be better for people with allergies. While keeping your fan on 24/7 may be more energy efficient, there are a few downsides to leaving your fan on all of the time:

Why do you run a fan when the AC isn't working?

On the one hand, running your heating and cooling fan even when the AC isn’t in operation helps to circulate the cool air throughout your home. Doing so distributes it evenly, ensuring consistent comfort. It’s also worth noting that constantly turning the fan on and off can put your system through wear and tear.

Why is running a fan so hard?

Running the fan constantly also increases your system’s maintenance needs. That’s because the more you run the fan, the faster your filter will get clogged. Although replacing the filter isn’t necessarily a very demanding task, you have to remember to stay on top of it vigilantly.

Does running a fan without AC save money?

As a result, you could pay hundreds of dollars more in energy bills each year than you otherwise would. Some people make the mistake of assuming they’ll save money by running the fan without the AC when it’s warm out.

Can you leave a fan on?

Over time, this may cause more frequent breakdowns. Excessive wear and tear may even reduce your system’s lifespan. So, you might try to avoid this by leaving the fan on. Additionally, by circulating the air with the fan, you’ll often end up with cleaner, fresher air in your home.

Do you need to run an air conditioner in Florida?

Even in Florida, there are plenty of instances when you don’t need to run your air conditioner to keep your house cool. However, some homeowners wonder if they should (or could) still run their blower fan when their AC isn’t in operation. Some homeowners even believe it might make sense to keep the air conditioner fan on constantly.

Does Running The Fan On My Air Conditioner Use a Lot of Electricity?

No. If you use the fan on your air conditioner, it will not use a lot of electricity. Instead, it will help you conserve the amount of energy your unit could be using. When you put the AC on fan mode, the compressor goes off.

Disadvantages Of Using Fan on Your Air Conditioner

You might not get desired results when using your AC on fan mode. This is because after the thermostat reaches the set limit, the fan will stop the even distribution of air within the room. So, some parts will be hot while others will be cold.

When Should You Use the Fan on Your Air Conditioner?

This majorly depends on the effect you want to achieve and the type of AC you’ve got. If you’ve got an AC with a 3-speed permanent spit capacitator motor, your electricity bills will be higher. However, if your AC has newer motors, your electricity bills won’t be much higher.

Bottom Line

So, does running the fan on my air conditioner use a lot of electricity? No. If you use the fan on your AC, it will help you lower your electricity bills. The AC compressor, which consumes a lot of energy, goes off as the fan runs. This will help you save a lot of money which you can spend on other important things.

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1.Why Does the Fan Keep Running on My Air Conditioner?

Url:https://www.aireserv.com/about/blog/2020/september/why-does-the-fan-keep-running-on-my-air-conditio/

18 hours ago  · The Fan Is Switched To “On”. If your fan is switched to the “on” position, it will continuously run. You should set it to the auto position, so it only runs when the HVAC unit is running. Once you fix this setting, your ac unit fan will shut off when it recognizes the desired room temperature.

2.Why Does the Fan Keep Running on My Air Conditioner?

Url:https://randtservices.com/blog/why-does-the-fan-keep-running-on-my-air-conditioner/

6 hours ago When the fan of your air conditioner is set to on, the fan will continuously keep on running. While, when the fan of your air conditioner is set on auto, the fan will only run when the cooling component of your air conditioner is running. The cooling component of your air conditioner and the fan always work together.

3.Why does the fan keep running on my air conditioner

Url:https://www.arlingtonairconditioningheating.com/why-does-the-fan-keep-running-on-my-air-conditioner/

8 hours ago  · The thermostat fan keeps running as long as the AC system is on. This is unlike the auto mode in which the fan runs only when the AC system begins an air conditioning cycle. Leaving your AC Fan Setting on ON Mode. Leaving your air conditioning fan on is a personal decision. There are various pros and cons of always leaving your air conditioning fan.

4.Videos of Does The Fan On An Air Conditioner Always Run

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2 hours ago Sort. Recommended. Bob Nance. HVAC Service Technician and Service Manager (1971–present) Author has 414 answers and 226.8K answer views 4 y. No. Most newer units have a power saver fan switch that cycles the entire unit off when the demand thermostat setting has been reached. It may be advantageous, however to leave a continuous fan enabled to maintain air mixing and …

5.Does the fan need to run all time on a portable air …

Url:https://www.quora.com/Does-the-fan-need-to-run-all-time-on-a-portable-air-conditioner

13 hours ago  · Pros to Running Fan on Air Conditioner Continuously: Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan.

6.Fan Mode on AC? - What, When, and Where?

Url:https://breathebetterair.org/all-post/fan-mode-on-ac/

34 hours ago Does Running The Fan On My Air Conditioner Use a Lot of Electricity? No. If you use the fan on your air conditioner, it will not use a lot of electricity. Instead, it will help you conserve the amount of energy your unit could be using. When you put the AC on fan mode, the compressor goes off.

7.HVAC Fan Continuously Running - Homesense Heating …

Url:https://trusthomesense.com/blog/pros-cons-continuously-running-hvac-fan/

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