The only time I don't have mine on all the time is when the ac is running. Inside of your air conditioning unit, there is something known as the ‘blower’. 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. Here are the pros and cons of the ON vs Auto setting on your thermostat. If you don’t want to turn the fan off and on all of the time, there are some new technologies that will allow you to program the blower fan to run for 10 to 15 minutes each hour. First make sure there is power to the indoor unit and that a switch or breaker isn't off. Many of them are highly efficient these days and do a fantastic job of distributing air, so it only makes sense that people turn them on when it gets hot outside – without turning on the actual air conditioner – in an attempt to stay comfortable without spending extra money on the actual air conditioning. No matter how well they are insulated, the heat is going to get in. We will go over a few things to check before calling for service. It is more energy efficient to run the fan without the air conditioner, but only in certain situations and for short periods of time. If you turn on your ceiling fans, turn your air conditioner up 4 degrees to 80 degrees. The fan’s “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time needed, at the slowest speed. There are a few positives to this feature. (Not Recommended) Setting the FAN to “ON” is not needed to run the AC or HEAT. Leaving a fan in the "on" position can actually lead to an increase of infiltration of outside air into your home. Though having only one fan speed usually indicates a bad blower resistor, a diligent mechanic at a repair shop will test the resistor, fan switch and connections to … Answer Save. It could cost you hundreds of dollars a year. Running the fan continuously makes the humidity worse and your home less comfortable. Bayside Heating & AC believes in super-serving our customers! Of course, there are a few circumstances in which it might be a good idea to run the whole-home fan for a while in order to maintain your comfort level. Here are the pros and cons to this approach: There is no right or wrong answer. However, the difference in power consumption will largely depend on a few factors such as how cool the unit is set to. It’s best to just allow the air conditioner to do its job. If you don’t want to turn the fan off and on all of the time, there are some new technologies that will allow you to program the blower fan to run for 10 to 15 minutes each hour. If it’s hot outside, running this fan isn’t going to do much to help you stay comfortable. @ Tallra1 I already checked the wirings, and its all in good shape, but i havent check yet the main thermo-switch. My home ac fan will only run in on mode, not auto. We are also extremely proud of our “Super Service” awards, presented yearly by Angie’s List, for our high standards and customer satisfaction. Unless we are talking different fans here. Running the fan for a long period of time with any system (central air or window box) will also increase the humidity in the room. Therefore, the fan uses about 360 kWh per month in the ON mode. The average kWh in the US costs about $0.12 so it costs about $43 per month, or about $520 per year, to run a fan continuously. The blower will automatically run at different speeds, giving you the benefits of lower electricity bills and increased comfort. Problem I have is that while only the fan is running, the furnace circuit draws over 600 watts! The truth is that your ducts are going to heat up when it gets really warm outside, and this is especially true if they are located in your attic or under your floor. Despite hearing the sound of the AC turning on, your house is not cooling down as it used to. Close. AC unit is oversized, water ... make sure the blower has an ECM motor, AND make sure the fan-only circuit is set up to operate on the lowest blower speed. Fan constantly running despite low CPU Usage, Windows 10 I have an Asus Vivobook S200e which has been running fine. The fan’s “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time needed, at the slowest speed. This one is for the homeowner. If your furnace or AC fan is constantly running, call an HVAC professional as soon as possible. However, since you are not using the refrigerant in the air conditioner, the effect is not comparable. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. Using AC vs fan only. I live in the deep south of the US and it's starting to warm up here. Typically, this means one of two things: your outside AC hums but the fan doesn’t spin or the entire outside AC … I had the same problem a couple of years ago. This option is much more cost effective because you are using less energy. Almost everyone has fans in their homes; they come in many different styles including boxes, towers and even the exhaust fans that are designed to blow in fresh air while sucking out the stale air in our homes. Many systems can be set to run the fan even when no heating or cooling is taking place. If it’s cloudy and relatively cool outside but feeling stuffy in your home, running the fan for an hour or so can certainly help. If you have leaky ducts outside the building envelope, either higher infiltration (air leaking in) or higher exfiltration (air leaking out) will add to your energy bill and make your home less comfortable. Free Quotes on Any Repair or Installation. Note that some systems and thermostats have another option called “Circulate”. It's a new house (just passed 1 year), and a very modern high efficiency furnace. 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. Keeping your fan on AUTO is the most energy-efficient option. When the thermostat is set to “ON”, the FAN will run at all times. The auto setting is energy efficient and may be enough for most typical-use homeowners. However, since I have upgraded to Windows 10 the fan has been constantly running at the highest speed as soon as I turn on my computer. A failed sensor can cause the fan to run excessively or not run when cooling is needed. @johnblack I checked it while it is on cold state, but then when turn the AC ON the Radiator Fan turn on, so I let the AC ON while i drive my car, after 30mins driving if i turn the AC OFF, the RADIATOR FAN still dont work, even the Radiator Temp was hot. Thank goodness for your Air Conditioning system! For a safe and fast repair, contact Petro Home Services. Pros to setting your thermostat fan setting to AUTO. In contrast, the alternating current fans, or AC fans, are powered with a changing voltage of positive and of equal negative value.In general, this changing voltage has sinusoidal shape. If the ac is running, then the fan is running. When your AC system is functioning as it should, it runs in cycles. Do I need a new wall (thermostat) unit or something? Better dehumidification. (Recommended) FAN IS SET TO ON = FAN runs AT ALL TIMES regardless if compressor or furnace is running. I'll also guess that the indoor blower is not running. Not really. The furnace fan runs but it just blows cold air. Since, you said, "only the fan is blowing outside." The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery.Typical voltage values for DC fans are, 5V, 12V, 24V and 48V. We often hear the debate around whether or not to run your AC Fan continuously. Trying to fix electrical problems on your own could cause more damage or even create a fire hazard. Veritas et Aequitas ( ) Lv 7. It’s an ages-old debate: does it do any good to run your blower fan in your home without turning on the air conditioner itself? Is your air conditioner not blowing cold air? 3 … That kinda don't make sense. It makes you wonder if the dog days of summer are behind us or if they’ll be back with a vengeance next week. Leaving Your Fan on Auto. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan. Running the 300-watt fan continuously in the “on” position will increase your monthly energy bill. AC Repair Pointers – Clean My Drain Line. The best thing you can do to avoid costly AC Repairs is to make sure you are maintaining your unit properly. Learn the most common causes … FAN IS SET TO AUTO = FAN runs automatically ONLY when compressor or furnace is running. Posted by 7 years ago. 1 decade ago. This can cause problems with your thermostat and overall HVAC system. Let's say when it temp drops to 65 then heater is turning on and then turn off at 67, but fan is still running and reaching temperature to 79 then AC is automatically turning on to get the temperature back to 78/77 then the entire system is calming down finally. The auto setting turns the fan on only when the air conditioning or furnace is actively running. By turning only the fan on in your air conditioner, you are still keeping things cooled off. Cons to Setting fan on Auto: 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. If your unit's fan is not working efficiently or at all, however, your unit's overall performance can diminish. Using AC vs fan only. expect call technician.. Good luck. According to Energy.gov, “If you use air conditioning, a ceiling fan will allow you to raise the thermostat setting about 4°F with no reduction in comfort.”So let’s assume you keep your central air conditioner at 76 degrees when you’re home. So, is it a good idea to run your whole-home blower fan to remove stuffiness and provide cooling relief? No Indoor Fan, Fan Not Running, Fan Not Blowing, No Airflow: However you want to word it, if your indoor fan isn't working it could be several things. Mild Days Are for Fans. When your fan is continuously moving the air, it helps to dry it out. The primary purpose of this fan is to blow the air that has been cooled inside of the exchanger all throughout your home via a series of ducts. I hate being hot, and am doing my best not to run the AC. Check to be sure the filter is correctly in place and consider upgrading the filter to a higher efficiency filter or the highest-rated filter that your system fan and filter slot can accommodate (consult your HVAC manual or an HVAC professional for details). We offer new customer specials as well as regular maintenance program – called Bayside Comfort Care. After some investigating, you determine that your outside AC unit isn’t running but the inside is. Even if the issue is small, your AC would have got a complete checkup to prevent any more further concerns. Therefore, if you run the fan continuously for a 30-day month (720 hours), you would use 360,000 watt hours (720 x 500) or 360 kilowatt hours (kWh). The fan will only turn on in the run position. Running your fan on AUTO or ON is a personal preference. We’ve provided pros and cons of each setting option, so you can decide which one is best for you. In fact, even your central air conditioner is equipped with a fan powerful enough to force air through your entire home. This sensor switches the cooling fan off and on as needed. It is important to remember that you should never use the "fan" mode for a central air conditioning unit the same way you use a regular room fan. Auto helps distribute air in the beginning of the cooling or heating cycle and then cuts off when the set temperature is reached. A typical AC fan motor uses about 500 watts when it’s running. The constant stream of air blowing on our skin provides an instant cooling sensation, helps us to breathe easier in high humidity, and just makes us feel more comfortable all-around. The average unit has a 500-watt fan, which uses almost as much energy over the course of the year as a refrigerator, resulting in a $50/month bill. Mid-August and temperatures are in the 70’s? HVAC in the News: Should I really set my thermostat to 78 degrees? Archived. 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. The fan moves the air around to keep it from being still and heavy. Since the 1800s, human beings have loved their fans. While it may make sense since it helps to circulate air and keep things from getting stuffy, it may actually be costing you more money in the end. Pretty much there is nothing you could do. Your other option is to set your fan to AUTO, which means the fan runs when directed to by the unit. 1 0. An AC unit on Fan mode usually consumes about 150W with the fan running, while the AC unit consumes 1000W when on default or Cool mode. 6 5 56. AC compressor not working but fan is running, this may cause you some discomfort and concern. This presents a series of issues, though. Keeping the fan on creates an evener distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage. Trane air conditioners provide central cooling that can turn a hot and muggy day into a cool breeze. What do I need to fix? This means that when you turn on the fan and let it run, the only thing you’re doing is circulating hot air throughout your home – and the air in the ducts might be warmer than the air in your home in the first place. This can be better for people with allergies. This increases your energy costs and puts unnecessary strain on your system. Leaving the fan on 24/7 ensures cleaner air, as the air is pulled through the filtration or UV light system (assuming you have one of these features). More frequent starts and stops will make the fan wear out faster. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend its lifespan. This allows you to set the fan on for a certain amount of time every hour. Using the pros and cons above you can decide for yourself what will work best for you. In this video we show you an easy to follow DIY Fix for AC Compressor Fan Not turning On, Just Humming. AC Troubleshooting Guide to Fixing a Constantly Running AC Unit. Of course one of the best ways to save money is to regularly maintain your unit. (According to my Brultech meter). Bayside Heating and Air Conditioning is fully licensed and bonded. We offer emergency repairs, routine furnace and AC services, and maintenance plans. Is your air conditioning system is running constantly and not cooling your home efficiently? The fan only runs when the system is on and not continuously. 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