Copyright 2018 - O.K. When the fan's in the on mode, the … The indoor fan is the one that blows the air you feel coming out of your vents. on Facebook Air conditioning and thermostat savings an energy tnb advises keeping air cond temperature between 24 26 on vs auto which thermostat setting is better cooltoday best portable air conditioner for car and trucks 2019 tnb advises keeping air cond temperature between 24 26. Pros: The primary advantage of the “auto” setting is that it uses less energy. We may ask ourselves, can we run the air conditioning unit less? The “on” fan setting does not pull the moisture out of the air like the “auto” setting on the unit does, thus leading to mold issues . If you need some added circulation in certain areas of the home, use a ceiling or plugin fan. Air will be flowing through it more often and will clog. HEAT mode The unit purely operates in heating mode. The “auto” setting. Save my name, email, and website in this browser for the next time I comment. When the setting is on “auto”, the fan will run only when the air conditioner is running. Here are the pros and cons to this approach: Pros to Allowing Fan to as Needed: This option is much more cost effective, because you are using less energy. When the thermostat is set to FAN ON … ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air. If this is set to AUTO, the BLOWER FAN only operates when the furnace makes HEAT or the AC is cooling. You want your home HVAC system to take the moisture from the cooling coils to drain and drip outside, especially in the summer months. Then, set the desired temperature, and the A/C system (including the fan) will turn on and off automatically as needed. An additional fan does not cost as much to run on a continuous basis. Setting the thermostat to ON means you’ll hear the fan 24/7 (or as long as the thermostat is set to COOL). The fan will start about 40 seconds after the burners light and go off about one minute after the temperature is satisfied. On cooling, the fan will run only when the air conditioner is running. Leave the fan on “auto” when possible. When the setting is on “on”, the fan will run 24/7 whether the air conditioner is running or not. If there is only an "auto" setting, turn it to that. Use portable or ceiling fans – These can be used together with your air conditioner to spread the air faster and more efficiently throughout your home. A key part of this is knowing the difference between the "Fan" and "Auto" settings on the device. The Purpose of the AC Fan. Running your fan on AUTO … The BLOWER FAN has a switch on the thermostat that has 2 positions. Your air conditioner has a blower motor inside that forces the air out and through the ductwork to deliver cool air to all of the rooms in your home. On the other hand, if your fan is set to Auto, that means that the fan will only come on when the AC does. This means the filter is able to extract more particulate matter like dust, pollen, dander and other allergens. “On” setting– Fan is constantly on, even when the HVAC system is not on and is always blowing air throughout the home. As we know cool air drops and hot air rises, so you want to catch that cool air and circulate it before it drops. You can affect the air movement by setting the fan to auto or on. When the thermostat senses that the house has reached the setpoint, it shuts off both the cooling and the fan. There are two settings on your thermostat to control the fan – auto or on. Then there is no gain from this. on Twitter If you’re on the fence about whether to buy one of the modern electric fans, here are some benefits you might not have thought about: 1. These two AC components work together to cool the home. Setting your thermostat involves making more choices than just the desired temperature. You also have the option to set the system to either “fan on” or “auto.” When the blower fan’s set to “on,” it runs continuously, circulating air whether the cooling system components — the evaporator coil, compressor and condenser — are activated or not. Every thermostat degree warmer in summer and cooler in winter saves you money. If you put a tall oscillating fan 1- 2feet in front of a window air conditioner (22 inch the biggest standing from Lasko) is what I use. If you have a filtration system or UV lights in your home, the air can be cleaner if it is pulled through this system. Since the fan is always running, there is no stress put on the system to start-up like there is in the “auto” setting. Designed By: WolfPack Advising, How To Read a Water Meter in a Few Simple Steps | Boggs Inspection, How to Clean the Inside of a Double Pane Window | Boggs Inspection. Here is a video below about a home in South Florida that left their setting to “on” for 3 months. Fan On or Fan Auto. “Auto” setting only runs when the system is reaching the set temperature so it does not run continuously. If the thermostat is set to ON the BLOWER FAN runs continuously. All Rights Reserved. May 21, 2018 Bryan Orr 4 Comments. In other places in the U.S., try both and see what works best for your home. Let’s take a look at what “on” and “auto” settings are, the pros and cons of the “auto” setting, and also the pros and cons of the “on” setting. Full disclosure, as a technician I was guilty for many years of setting fan to “on” at the thermostat. Living in the southern half of the U.S., where the weather is warm enough to need the air conditioning on most of the year, we wonder if there is a way to save any money on our electric bill? Understanding when to use each setting will maximize your experience with any HVAC unit during warm and cool months. The brand and logo are property of Bryant. On auto, your energy bills may not fluctuate as much from month to month, and you … I run my 8000 btu window air conditioner at 79 temp, fan on medium, floor fan on medium. The air from outside is pulled in with the A/C on the “on” fan setting. ON means the fan is … Pros. © 2020 Atkinson Inspection Services. When the thermostat senses that the house has reached the setpoint Depending on the type of duct leakage, you may end up with higher infiltration (air leaking in) or higher exfiltration (air … Save my name, email, and website in this browser for the next time I comment. When the fan is set to On, it blows continuously, circulating and filtering air regardless of whether the air conditioner is in cooling mode. Meanwhile, this does not happen with the “auto” setting. What are the pros and cons of the fan “on” or “auto” settings? Set the Fan switch to "Auto," and the other switch to "Cool." The “on” setting will allow the air to be even throughout the home in every room. Because the fan only runs when your home is in a heating or cooling cycle, there … The auto setting is energy efficient and may be enough for most typical-use homeowners. When the fan is set to Auto, it only blows when the air conditioner is actively cooling. Fan vs Air Conditioning The Humble Electric Fan . If you have any other questions about your HVAC system, don’t hesitate to contact us today. AUTO means the fan turns on “automatically” ONLY when your system is heating or cooling your air. I never really thought of any of the negative impacts that could happen. So, which is better? You adjust the part the cools by changing the temperature setting on your thermostat. | Atkinson, How to Fix a Drafty Door and Windows | Rivertown Property Inspections. When you look at the thermostat, you may have noticed the ability to set the temperature and fan. When the AC unit runs, the fan helps cooled air reach every air register placed throughout your home. If you have a central air system, have the fan shut off together with the compressor – Set the ‘auto’ mode on the fan setting to do this and use fans in individual rooms instead. Fan set to auto = when the system is running the clean effects is working but only when the system is calling for heating or cooling so works when the system is on only. Once the AC cools your home down to the … AUTO and ON. When you set your thermostat’s fan to “on” or “auto,” you’re changing the way the HVAC distributes air within the home. Before we can answer the question of whether you should set your air conditioner’s fan to Auto or On, we first need to clarify what each of those settings does. The other fan is the “outdoor” fan – often called the condenser fan. Then, this could cause it to feel colder in your home, especially in colder climates. While the “on” and “auto” settings do not affect the cooling capabilities of the unit, one is far more energy efficient than the other. While the “on” and “auto” settings do not affect the cooling capabilities of the unit, one is far more energy efficient than the other. Your email address will not be published. When it comes to air filtration, ON has the upper hand. Use ceiling and standalone fans to complement your AC unit. When the fan is in the auto mode, the air conditioner moves air only when the cooling part is running. In the “auto” position, the fan automatically turns on when the AC unit kicks in. AUTO means that the fan turns on automatically only when your system is heating or cooling air. Once the thermostat reaches the desired temperature, the entire system shuts off until the next cycle. The fan is always running so this will cause the electric bill to be higher. Only use the “on” position if you need added air quality filtration and in other specific situations. However, most states have a humid time of the year so it may be best to leave it on “auto” to be safe. On humid days, it is best to run the AC in the dry mode. Reply to us below and let us know! The thermostat settings allow you to improve AC efficiency and comfort levels within your home. “Auto” setting– the fan runs until the set temperature is reached and then the system shuts off until the next cycle. Before long, it will need to be cleaned or changed out more often. Air Conditioner Fan Mode The fan for central air conditioning systems is connected to your furnace. The “on” and “auto” settings on your thermostat refer to how your system’s fan is set to operate. Once it reaches the set temperature, it turns off until the next cycle. If you plan to spend time away from the home, consider bumping the settings a few degrees up or down to enjoy further savings. In other places in the U.S., try both and see what works best for your home. Required fields are marked *. Turning the fan to "On" will make the fan run constantly, whether the air conditioner is on or off. This fan returns warm air to the condenser (which is the big unit outdoors). How to Dewinterize a House | Alpha Building Inspections, Air Conditioner Fan On or Auto - Which Is Better? When it is set on “auto”, the fan turns on ONLY when your system is running. Do you know the difference between running an air conditioner on HEAT mode compared to AUTO mode? The indoor fan is one of two fan motors in an A/C & Heating System. Knowing how to use each one can improve comfort levels and energy efficiency. Keeping Air Conditioner Fan On Or Auto. However, there are other factors to keep in mind. In AUTO mode, you’ll only hear the fan as it’s pushing cool air … Understanding when to use each setting will maximize your experience with any HVAC unit during warm and cool months. I wanted to circulate the air, and to keep air moving through the high efficiency air filter that most of our houses had. Many homeowners rely on their thermostats to maintain comfortable temperatures and airflow during the summer. Moves the air – The blower FAN moves the air 2. When the thermostat reaches your temperature setting, the system, including the blower fan, shuts off. on Google+, Your email address will not be published. If you have any other questions about your HVAC system, don’t hesitate to contact us today. by Saum Hadi Posted on November 5, 2019. During times of normal usage, switch to the “auto” setting to improve system efficiency and savings. If it’s in the “on” position, your fan will operate at all times, regardless of whether or not your furnace or air conditioner is running. If it’s set to the “auto” setting, your fan will only operate during your home’s heating and cooling cycles. Using the "auto" option for the fan is a better choice. The fan setting controls your AC’s blower; A fan inside your system that helps distribute air throughout your home. “On” Vs. “Auto” Let’s first define what the fan settings mean. As a certified a/c tech that's always getting more training on many aspects, it's been proven what is most energy efficient. The answer is, it depends on where you live. Setting Your HVAC Fan to “AUTO” Your other option is to set your fan to AUTO, which means the fan runs when directed to by the unit. This fan also “sucks” air through your air filter, known as “return air”. When you set your thermostat’s fan to “on” or “auto,” you’re changing the way the HVAC distributes air within the home. We’ve heard this question from customers before, so we put together this article to help you decide which is better for you. When the AC unit runs, the fan helps cooled air reach every air register placed throughout your home. The fan is on continuously so the parts will wear out faster and cost you more money than you are probably saving (if any). 1. As the system shuts off when the set temperature is reached in the home, this does not allow for all rooms to be cooled the same. The only downside, besides those discussed in above, is that you will nee… The indoor unit will blow warm air into the room until the set temperature is reached. Do you have questions about the settings or need maintenance on your system to make sure it is working correctly? Less noise. Share this post: Most air conditioner units have buttons labeled "fan" or "auto." Most fans use a few hundred watts of energy but only minimally impact the overall comfort level in the home. The auto setting turns the fan on only when the air conditioning or furnace is actively running. Auto helps distribute air in the beginning of the cooling or heating cycle and then cuts off when the set temperature is reached. In this case, the Dry mode is useful. Homeowners should use the "on" switch for the fan of an air conditioning unit sparingly, running the fan for a few minutes after the cooling part of the unit has stopped, according to Energy Vanguard. This setting acts as a dehumidifier as it takes the water out of the home. Air Conditioner Fan On or Auto – Which Is Better? Recommendations for Air Conditioner Fan On or Auto If you live in the south, it is better to put the system on “auto”, due to the increase in humidity and the potential for mold growth. The fan operates at a low speed, while the compressor runs for shorter periods of time to ensure that humidity from the air is completely removed. The good news is that electric fans have come a long way in recent years and lots of people are even supplementing their main AC with several placed strategically around the home. The air is re-circulated from the condenser back to the furnace, where it is turned into cool air … This is the most energy efficient option. Cools the air – The compressor cools the air. AUTO mode = Fan is on only when heat or AC is triggered by the thermostat setting; ON mode = Fan is on all the time; Let’s also assume we’re talking about a central air system with a blower motor (fan) located inside the home. When the fan turns off, it prevents condensation from reentering the home, possibly saving homeowners several dollars on energy expenses each month. When the thermostat fan setting is set to “on,” your system’s fan will constantly run, regardless of whether or not your home is going through a heating or cooling cycle. “Auto” and “On” Thermostat Settings. It then turns off when the home reaches the optimal temperature. In the “on” position, the fan will circulate air continuously, regardless of the temperature settings. The fan’s “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time … Choose the highest or lowest temperature possible to maintain your comfort level. The ducts in the attic will fill with hot air and blow the hot air into the home. Avoid leaving the fan “on” if you plan to leave the house. When the fan is in the auto mode, the air conditioner moves air only when the cooling part is running. ON mode causes the fan to perpetually circulate air through your AC filter. If the temperatures are low, but the air is humid, running an air conditioner in the cool mode will not be of much help. For improved energy efficiency, keep these best setting practices in mind: The thermostat settings allow you to improve AC efficiency and comfort levels within your home. Or should we set the air conditioner fan to “on” or “auto” setting? If you live in the south, it is better to put the system on “auto”, due to the increase in humidity and the potential for mold growth. Most systems offer two fan settings: On and Auto. CA License # 332447, Setting your AC Unit for Optimal Comfort and Efficiency. Starting and stopping can put stress on the system, thus causing it to malfunction or break. This allows more moisture from humid air inside your home to collect and drain outside, which leads to lower indoor humidity. The “auto” setting may extend the life expectancy of replacement air filters too. When the thermostat reaches your temperature setting, the system, including the blower fan, shuts … Heating & Air Conditioning – All rights reserved. The fan setting controls when this blower is on. In fact, running the fan when the cooling system shuts off can contribute to higher humidity levels inside and force the air conditioner to work harder. If your fan is set to On, that means the fan going to stay on all the time, whether the AC is running or not. This will then cause the HVAC system to run, possibly overtime, to cool the house back down. This simple guide will explain the difference. Thermostat reaches the optimal temperature fans use a few hundred watts of energy but only minimally impact the comfort. ” for 3 months works best for your home desired temperature, will! Is running cooling air disclosure, as a technician I was guilty for many years of setting fan “! The electric bill to be cleaned or changed out more often thermostat degree warmer summer! 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Making more choices than just the desired temperature, the air and comfort air conditioner fan on or auto! Warmer in summer and cooler in winter saves you money HVAC unit during warm cool... A ceiling or plugin fan possibly saving homeowners several dollars on energy expenses each month should we set temperature! Can put stress on the blower fan only runs when your system is reaching the set temperature is satisfied on. Thermostat to control the fan helps cooled air reach every air register placed throughout your home some... Refer to how your system is not heating or cooling air AC cooling... Is constantly on and blowing air when your HVAC system to make sure it is to. The answer is, it is working correctly conditioning unit less air through your air that. Indoor humidity to complement your AC unit kicks in can we run the unit. ” setting may extend the life expectancy of replacement air filters too,! Seconds after the burners light and go off about one minute after the temperature and.! What is most energy efficient and may be enough for most typical-use homeowners the answer is, it shuts until... Improve AC efficiency and comfort levels and energy efficiency Alpha Building Inspections, air conditioner fan on … setting thermostat. Saves you money conditioning unit less means that the house back down distribute air in the mode...