Running the Fan on an Air Conditioner Continuously: Pros and Cons

Running the fan on an air conditioner continuously may seem counterintuitive, but it has some advantages. Many homeowners believe that if you run your AC fan constantly, you may wear out the motor or pay hefty utility bills. However, keeping the AC fan running has surprising benefits.

In this article, the experts at Gladiator Services share the pros and cons of constantly running the fan on an air conditioner. Our company provides reliable air conditioning repair in Franklin Lakes. We can quickly repair all makes and models of air conditioners.

Pros of Continuously Running the Fan on an Air Conditioner

Having your air conditioner fan running all day can benefit your home in several ways, including even temperature distribution and allergy relief. To use this option, set the AC fan to "on" mode. The blower will continually run regardless of whether the AC is heating or cooling.

Here are the advantages of keeping your AC's fan on:

1. Better Air Circulation 

Depending on your home, the air may not properly circulate when heated or cooled. Since heat rises, the upper area of your home may become warmer than the lower floors. Running the AC fan will circulate air evenly throughout your home while stabilizing the indoor air temperature. 

2. Stops Bacteria and Viruses

Keeping the AC fan running can prevent the spread of bacteria or viruses such as the flu. Research shows that air circulation reduces the chance of viruses spreading throughout your home. The air conditioner fan can filter bacteria and other contaminants. 

3. Reduces Humidity

An increase in humidity can cause excess moisture, leading to mold and mildew. If you keep the AC fan running, your home will have less humidity and reduce the chances of mold growth. Air circulating within the home can also help dry moist areas like bathrooms.

4. Improves Indoor Air Quality

Air has to pass through a filter before it releases into your home. Air filters can improve indoor air quality by removing allergies, volatile organic compounds (VOCs), and other pollutants. If you leave the AC fan on, you will likely see less dust in your home. 

5. Helps You Breathe Fresher Air 

If your home has few windows and many air-tight seals, turning the AC fan off may result in a stuffy environment. Continuously running your AC fan will maintain a fresh atmosphere and eliminate odors. Proper air circulation will make breathing easier by eliminating hot and humid air.

6. Increases AC Lifespan

Contrary to what homeowners believe, keeping the AC fan running will not result in an early failure. Newer air conditioner models include a continuous fan option that is safe to operate. Allowing the AC fan to run continuously can help extend the life of your system.

Usually, the most stressful moment in the life of a motor occurs at startup. When you keep the fan on, the AC endures less stress by reducing frequent starts and stops. 

7. Lowers Electric Bills

An AC fan can help circulate the air in your home while reducing energy costs. Running the AC fan reduces emissions by eliminating the need to keep your air conditioner constantly on. Keeping an AC fan on all day is much cheaper than turning the cooling on.

8. New AC Systems Save Energy

New air conditioners with variable-speed motors have lower operating costs. Variable-speed motors can reduce your home's energy consumption by up to 60%. Continuously running the fan on an energy-star-certified AC will keep your home warm or cold while lowering monthly bills. 

Cons of Continuously Running the Fan on an Air Conditioner

Many factors may prevent you from running the fan on an air conditioner continuously, including higher energy bills and constantly replacing air filters. The following are some drawbacks of setting your AC fan to the "on" mode.

1. Higher Operating Costs

The most obvious disadvantage of running the fan on your air conditioner continuously is that you will use extra energy. A 500-watt AC fan uses the same energy as a standard refrigerator, which costs $50 per month. If you plan to run the AC fan continuously, factor in the additional costs.

2. Older AC Systems May Break Down

In older AC models, the fans cannot constantly run, resulting in unexpected breakdowns. Additionally, energy efficiency tends to be lower in older AC systems. In recent years, this problem has become less of a concern for many homeowners as these models have started phasing out. 

3. Unwanted Cold Air 

With the AC fan on and heating off, you will feel cold air blowing in the winter. Since the air circulates more often, your home will feel colder than the space temperature. The heater may run more to maintain a balanced temperature. 

4. Excess Hot Air 

Attics and walls located near ducts can accumulate hot air during the summer. The continuous operation of an AC fan will circulate the hot air in your home. The AC will need to work harder to keep the home cool. 

5. Replacing Air Filters 

The air filter will become clogged faster when air constantly pushes through the system. Most homeowners will have to frequently change the air filter to maintain good indoor air quality. Keeping the AC fan running will not damage the system but will cause the air filter to accumulate more dust and debris.

6. Chances of Motor Failure

Homeowners may worry about a breakdown if they always run the AC fan. A properly installed and maintained air conditioning system will not easily break down. However, the blower motor in older systems may have trouble keeping up and eventually break down. 

Work With an Experienced HVAC Company

If you plan on running the fan on an air conditioner continuously, the HVAC experts at Gladiator Services can help. We can ensure that your heating and cooling system runs smoothly and efficiently. Our team can also provide guidance on common AC issues, such as the problems caused by dirty air conditioners.

Contact Gladiator Services in Franklin Lakes, NJ, today for all your HVAC needs. Call us at (201) 903-9784.