Hi I live in New England and it’s summertime I have a brand new HVAC with an HRV if I continuously run the fan in my home during the cooling season it just drives the humidity up in the home from the condensation in the evap coil drip pan doesn’t make sense to keep it off in my case? Lexington, KY 40505. Modern furnaces are designed to do this using very low energy, however your older oil furnace may use more energy, so it may be more trouble than it’s worth. However, it should not blow nonstop. By running the furnace fan all the time, you are also running air through your furnace filter constantly. There are a couple of reasons why you may not want to run your fan. Your home’s heating and cooling system will help to balance these issues, but it does not run all the time. Better Air Circulation. The rest of they year, you should be fine, but please use your best judgement. A COVID-19 Prophecy: Did Nostradamus Have a Prediction About This Apocalyptic Year? It is considered OK to continuously run a furnace fan. The furnace goes into “cool down” mode and runs the fan constantly. If you do have equipment replaced, make sure your contractor adds duct sealing to the job. “On” means that your furnace fan will be continuously running, while “auto” means that it will run in order to match the temperature in your house to what you’ve set your thermostat to. Crawlspace systems can be tricky, especially if the ducts are leaky. Very informative. Laptop fan is an important component of the laptop cooling system. On the other hand, if you notice that your furnace is still running after it reached your desired temperature, it means the furnace is not getting the message that it’s already accomplished its goal. The evening sun will do the reverse in the afternoon. First of all, depending on the type of motor the furnace has, having the fan on continuously may add several hundred dollars to the home's electric bill. Personally, I prefer “auto,” but let’s take a look at the pros and cons of each now: Most thermostats have three settings: ON, AUTO, and OFF. If you are located near Lexington, KY, and you’d like us to do a free site visit to give you advice, we’re happy to do so. Running a furnace fan constantly also has drawbacks. Tip: Avoid setting your fan to ON, it wastes money because it forces the fan motor to run constantly. If your heating and cooling equipment is more than 12 years old, it probably came with a one-speed blower motor that cycles between ‘on’ and ‘off.’ These units have conventional split-capacitor electric motors that do not make speed adjustments. The result is better air quality, since particles are constantly being removed from your air. Another is if you have leaky ductwork since this can damage your system. Many people are under the assumption that running their furnace fan all the time will cause it to fail prematurely. During heating, the fan is controlled by either a timer circuit or a limit circuit in the unit. This helps keep the temperatures in each individual room even. 801 Winchester Rd. I run my furnace fan continuously at LOW speed. Also adding indoor air quality products like high-efficiency filters or ultraviolet light systems will greatly improve the air in your home while running the furnace fan, so that you can turn your furnace into a whole-house air cleaner! If you are in Central Kentucky, call us at 859-687-0553 to get a free appointment to calculate the furnace size you might need. When running your fan continuously, we recommend doing so on the low speed setting. Therefore, the fan uses about 360 kWh per month in the ON mode. Are you in Central Kentucky? Very cold winters and hot and humid summers. We have many friends on the west coast. There is a simple explanation for this. Is there an air intake anywhere that I should be closing, or anything else I should be doing? Yes, the higher MERV rated filter will capture more particulate matter, helping to improve your air quality. Thanks for the question, Kay! Without me knowing the exact set up of your system, it would be hard to say why you are seeing increased humidity. 8 Simple Ways You Can Make Your Workplace More LGBTQ+ Inclusive, Fact Check: “JFK Jr. Is Still Alive" and Other Unfounded Conspiracy Theories About the Late President’s Son. In milder months, it may only run for a few minutes every hour. It uses electricity to keep the fan running and therefore causes slightly higher electric bills. I have a Hepa filter. He said the air would be healthier, less dust and easier on the ac. You should only run the humidifier when it calls for heat. However, the increase is minimal, and with high efficiency motors you may not even notice a difference in your bill. Additionally, this feature is especially beneficial in multi-story homes, where rising hot air can cause the upper floors to be uncomfortably warm. As a result, the fan will continue to run. It’s actually designed to run continuously. The auto setting turns the fan on only when the air conditioning or furnace is actively running. Yes, this is a good feature for individuals who do not want to run the fan constantly, but still want to have some air circulation. Will definitely make use of a few of these techniques Thank you. Running your furnace fan all the time could save you money each month because having more even temperatures in the home results in the heat or air conditioner running less. If your fan is set to auto, it should only run if your furnace is in the heating cycle. This can easily be fixed by having a good air conditioning contractor come in and seal your ductwork — it’s not very expensive and is usually done in less than a day. “On” option––Air is always being cycled through your furnace filtration system when your fan is continually running. My question is, how do we know if we have duct leakage if our condo is built on a slab? There are a few instances where if your furnace fan keeps running it is not a good idea. Running your fan on AUTO or ON is a personal preference. Turning your thermostat to fan on mode helps even out the temperatures by a few degrees by pulling some of the ho… In my opinion, the government should mandate all new furnaces have a variable speed motor. And as another example here is a Goodman Amana Furnace Fan Relay B1370751 B13707-51. CEO Compensation and America's Growing Economic Divide. Here is a simple checklist to troubleshoot a furnace fan that is constantly blowing: Check your thermostat. The truth is, it varies which is the better choice for you. In multi-story houses or town homes, warm air can rise up to upper floors and overheat those rooms. We’d be happy to provide a free estimate on a modern furnace that would be dramatically more efficient than what you have. I'll move forward with ordering a new board. The fan will start about 40 seconds after the burners light and go off about one minute after the temperature is satisfied. I live in an area with some hot summer days , with unhealthy wildfire smoke. The circulate feature on some thermostats will automatically run the fan for around 20 minutes out of every hour. This can also happen when certain parts in your furnace is broken or damaged. Keeping the fan running also means heating is more evenly distributed throughout your home. Running your furnace fan will blend the air throughout the day keeping the air in your home from having noticeable hot and cold spots. Running the furnace fan all the time can help by constantly pulling the cold air from the lower level and warmer air from the upper level, blending the two, and then redistributing a more stable, even temperature throughout the home. You won’t have to worry about the fan wearing out or breaking. If you have a builder’s grade or older system then it may cost you as much as $10-$12 a month. Running the fan will provide for better air circulation throughout the entire home, … With the fan constantly on, it’ll recirculate the air throughout your home which will help even out temperatures from different parts of your house. If your furnace fan is set to AUTO and is still running, then move on to the next section. It is considered OK to continuously run a furnace fan. We’re sorry to hear you are impacted by the wildfires – if you need a recommendation for a local HVAC company to service your system, let us know. It’s not a very expensive upgrade and it makes both heating and cooling more efficient. When you leave the fan on continuous mode, it will constantly recirculate the air through the house. The house is well insulated and the windows are protected from solar heating, so even when it is hot, the house stays cool, so I rarely need the air conditioner. THe problem is it seems to be running constantly. If you want to keep your furnace’s fan running properly, it’s important to schedule annual tune-ups for your furnace. With electricity rates in central Kentucky, it will cost the average homeowner less than $3 per month to run the fan 24 hours a day. This is beneficial because it can reduce cold and warm spots in the house. If your fan is set to ON, the fan will constantly blow. Running the fan continuously does have several benefits. Good karma to you bud. 2015/10/22 Anonymous said: My fan keeps running with no heat on furnace. 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. No, we do not recommend constantly running the furnace fan in the heat of the summer, as you will draw attic temperatures into the living space. In a closed space like your home this process is called the “stack effect” — it is the same process that allows your fireplace to draw smoke out of the chimney. Unless you have areas in your home that are problematic for condensation and poor air circulation, seasonal use of this and the HRV should be sufficient. If you have an older home with a lot of duct leakage it may not be a good idea to run the fan all the time as it may draw in dirty air from places you don’t want. I have a nice dehumidifer I will run also. We have an older oil furnace without AC. On 2019-07-06 1 by (mod) - Supco relay used as an A/C fan relay switch. But I’m not 100% sure what speed it should be at. Because hot air is lighter than cold air, hot air will naturally rise and cold air will naturally fall. Don’t run the fan in the heat of the summer? The circulate feature on some thermostats will automatically run the fan for around 20 minutes out of every hour. Continuous fan operation will constantly recirculate the air throughout the house which will help even out temperatures from room to room or floor to floor. Continuous mode – which allows the fan to run all the time, even when the furnace is not engaged – has only one minor drawback. These fan systems were designed to run all the time and, assuming your system is properly installed with the correct size ductwork, it may even extend the life of the fan. Perfect sense⚡️. The most obvious benefit to keeping the furnace fan on the “on” setting is more even heating and cooling distribution. Just had our ac's yearly check up. Turn it to AUTO and see if that solves the problem. The most stressful part of any motor’s life is that when it starts. It has moisture but is always around 55°. For example, if your house faces east then the morning sun will likely warm the front rooms of your home a few degrees warmer than the rear of your home. Or could the circulating air help the window units work more efficiently? On 2019-07-06 by (mod) - Goodman Amana Furnace Fan Relay B1370751 B13707-51. Same advice? Very informative, thank you for all the information! The fan only runs when the furnace tells it to. Pros to Keeping Fan Continuously Running: Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend its lifespan. This results in healthier indoor air quality for your family and less dust on your furniture. During your tune-ups, we’ll inspect your system for any problems like a malfunctioning limit switch that might cause your furnace fan to always be on. By running the furnace fan all the time, you are also running air through your furnace filter constantly, ... Is it OK to run AC fan all the time? This results in healthier indoor air quality for your family and less dust on your furniture. This results in healthier indoor air quality for your family and less dust on your furniture.In the cooling season running the furnace fan can help lower humidity in your home by running air through your air conditioner’s evaporator more consistently which allows the system to pull out even more moisture over time. There are several problems that this can indicate. Yes. These fan systems were designed to run all the time and, assuming your system is properly installed with the correct size ductwork, it may even extend the life of the fan. The U.S. Supreme Court: Who Are the Nine Justices on the Bench Today? Would that just suck out all the cool air? OK, thanks again for the advice. Whenever a cold snap hits – lower than 25 degrees here in Atlanta Metro – your furnace or heat pump may seem to run constantly, leading you to believe that perhaps your unit is too small and unable to keep up. My forced air gas furnace is in the crawl space. Our furnace has the humidity module on it. If your fan is running constantly, the heat exchanger never gets a chance to cool down either which can cause serious issues. I would like to use the fan with a high quality air filter and mix the cool basement air with the warm air of the second story bedrooms and hallway. Homeowners should experiment to see if it works best for their home to have the furnace fan running continuously or not. What is Radon & Why Should My Home Be Tested? on some of my upcoming projects. 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. What can I do? Having an ENERGY STAR rated furnace with a variable speed motor is ideal. This is because. Finally someone who knows what they’re talking about! We’re here to help! Here are 4 common reasons your furnace is running constantly. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan. Second, troubleshoot for fan limit switch problems If you have an efficient filter and a UV light, you are constantly filtering and cleaning the air. Second, having a fan run constantly leads to higher dust levels in a home, even with expensive furnace filters. Is that the right thing to do? To be safe – unless you have a specific reason to keep the fan running constantly, just place your central air or furnace fan setting on auto. A fan running continuously will pull that hot air back through the HVAC system to keep the temperature even. What is the best way to use the fan so I can clean the air without drawing heat into the ducting from the attic, and not using the air conditioner? 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. I turned it up to 45% but according to the sensor, it never gets there and 43% is the highest and the fan is constantly running, trying to get the humidity to 45%. The heating needs of the fan will always override the constant fan setting. There is an option to use the cold air from the basement to temper the air upstairs. Also, I have a HUGE air register in the middle of the living room floor. Call us at 859-687-0553 – we’d love to chat with you about your furnace needs. Your home’s heating and cooling system will help to balance these issues, but it does not run all the time. Exhaust fan should only run when the furnace is on. If you believe you may have leaky ductwork give us a call today or contact us here for service. That’s because the fan is not working all the time. Keeping your thermostat fan setting to ON will also cause cold air to blow out of your air vents. Please do no keep my email for solicitations, or give to any 3rd parties. By running the furnace fan all the time, you are also running air through your furnace filter constantly. This is because different parts of your home will experience different external temperatures throughout the day. When the furnace fan is constantly on, air is continuously cycling throughout the home. Is It OK to Continuously Run Your Furnace Fan. We just had a furnace contractor tell us to leave our furnace fan on continuously to even out the heat in the house. The auto setting is energy efficient and may be enough for most typical-use homeowners. Some HVAC technicians also state that it is better for the fan motor to run continuously instead of turning on and off with the furnace. Keeping your fan on AUTO is the most energy-efficient option. If homeowners find this is beneficial, it is generally suggested to only run … If your fan is set to ON, it will run continuously, regardless of whether your furnace is heating or not. The greater question is if you have duct work running through the concrete slab, you should have a radon test completed to ensure it is not pulling radon from the ground. No pockets of hot and cold. Auto helps distribute air in the beginning of the cooling or heating cycle and then cuts off when the set temperature is reached. However, if the laptop does not run any software at all, and your laptop fan always on, that may be caused by the system set up. When the temperature of the laptop rises, the fan will start to rotate. Reply: 6 steps to getting heat on when the fan runs but the furnace does not. My older oil furnace does not have A/C . In addition, we can answer any questions you might have about why your furnace fan runs too frequently. This ultimately saves homeowners money while also making them more comfortable. The furnace and fan will come on for a while and then shut off. Pros to Running the Fan All the Time. Normally I would say yes it should help but I’d suggest trying it for a couple of weeks and see if you like the results. Since the fan uses much less power than the outdoor unit, you save money in the end. Running your home’s furnace fan all the time is not a bad thing. Then two minutes later it comes on again. That means over 20 percent of the air in your home is passing through your attic or crawl space before it gets to you — YUCK! In multi-story houses or town homes, hot air can rise up the stairs and overheat the upper floors. Reader Question: Furnace fan keeps running with no heat coming from the furnace. I have a single story home with vaulted ceilings and a new furnace in the attic. If your furnace is not running constantly, it’s more likely that you notice how cold some areas of your home get compared to others. I constantly get this question from homeowners in the greater Lexington, KY, area, and the answer is almost always, “Yes!” Almost — but more about that later. Pros to setting your thermostat fan setting to AUTO. NOAA Hurricane Forecast Maps Are Often Misinterpreted — Here's How to Read Them. On cooling, the fan will run only when the air conditioner is running. We can calculate the correct size furnace for your home. Here’s a quick look at the benefits of running the furnace fan at each setting — and how you can decide which setting is better for your home. A heating system works by distributing warm around your home. Send us an email at email@example.com, or use our contact form, and we’ll respond within one business day. In milder months, it may only run for a few minutes every hour. Required fields are marked *. If you have noticed that your furnace is constantly running, even as the cold weather is starting to ease up, it might be a sign that something’s lurking in your heating system. Should I Run My Furnace Fan All the Time? This helps circulate the air and maintain a more balanced temperature without having to run the fan continuously. MERV-13 is the highest rated filter for residential use, so you’ve made a great choice. Also, should I run the humidifier with the fan or just when it calls for heat? Compared it to city miles vs highway miles on a car. If you have a newer ENERGY STAR rated furnace it will have a variable speed motor that is designed to run all the time. Your email address will not be published. The house retains heat and is fairly winterized but the furnace seems to be always running. We recommend checking back with your installing contractor. So far we are feeling more even heat in the rooms. The number of BTUs, or British Thermal Units, needed to heat your home is dependent on a number of variables. ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air. In addition, it provides extra air filtration which may be helpful if health risks are a concern. Actually, the opposite is true. Even if you have a single story home, you should still run your furnace fan. Running the furnace fan on continuous low speed is a good idea to improve air movement within your home, but it only makes sense in the heating and cooling seasons. Cheers for the great share. This is why in some houses the basement is always cold and the upstairs is always warmer. As hvac guy was leaving he told me to leave the furnace fan running continuously. We’ve provided pros and cons of each setting option, so you can decide which one is best for you. Many people ask if they should run their furnace fan continuously in fan on mode. 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