But in south Florida, it circulates warm moist air, which can spawn mold growth. Summer Humidity Is Scarier Than You Think, Commercial Refrigeration Service & Repair, HVAC Humidity Control: 5 Reasons Your AC Is Ineffective, Controlling humidity indoors is now more important than ever due to COVID, New York HVAC Systems: 8 Reasons Bigger is Not Always Better, 7 Reasons to Choose VRF Technology for Your New Air Conditioning, Repair or Replace? Run the AC. The increased circulation of air will do wonders for reducing humidity and evenly distributing the cooler air from your air conditioner. Central air conditioners do a good job at the sensible removal; 70-80%+ , but only 20-30% of latent removal. My air conditioner is not getting the humidity lower than 40% and that’s with the outside humidity around 10%. It’s just one more reason (beyond comfort) to keep humidity between about 40 and 60 percent for most spaces. A little back story: had a dead blower, motor replaced. This is one of the most effective ways to increase humidity in any part of your house. I believe I had mistaken the low stage cooling mode for the fan being stuck on. More frequent starts and stops will make the fan wear out faster. Then it turns off until the temperature once again goes above the thermostat threshold. 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: Your other option is to set your fan to AUTO, which means the fan runs when directed to by the unit. Read on to learn more. Here’s a resource that can help you decide: Repair or Replace? As your AC unit cools your home, it also removes moisture from the air. Controlling humidity indoors is now more important than ever due to COVID, because the virus thrives in both very high and very low humidity conditions. It could cost you hundreds of dollars a year. Humid air outdoors is rough on your AC’s condenser coils, and they can get grimy in a hurry. If set to “on,” one may still have high humidity levels even if temperatures are lowering. There are a few positives to this feature. But until it does, the fan is blowing humid air throughout the house. Related article: New York HVAC Systems: 8 Reasons Bigger is Not Always Better. If you have a split system AC, you actually have two fans in your AC unit: one fan for your outdoor unit and one fan for your indoor unit. Keep Plants. You will notice that the dry setting will cause the air conditioning unit to cycle more often and the fan speed will be noticeably lower as well. I am running a dedicated dehumidifier and it mad the humidity higher at 42%. This is possible only for certain types of AC systems, and it does carry some risk of ending up with a frozen evaporator coil. Your AC size needs to be carefully calculated using a load calculation process. Proper Thermostat Settings. This results in healthier indoor air … Courteous. At this point, you may be facing a repair or replace decision. Up north that may work, circulating warm dry air. There is a reason you see so many ceiling fans all over the south! After our first call, we never looked back. Air Conditioner Vent • Does running the fan on my air conditioner reduce humidity? During the summer months, the ducts in your attic and close to your walls can fill with warm air, resulting in the fan blowing hot air into your house. By running your ventilation fans while you are showering and cooking, you can help reduce humidity at the source and let your air conditioner worry about the natural humidity that’s already present in your home. Use fans and air conditioning to stay cool. When the fan is set to On, it blows continuously, circulating and filtering air regardless of whether the air conditioner is in cooling mode. Isn’t air conditioning supposed to remove humidity? However, as you know, thanks to humidity the actual temperature and the … Air conditioners cool homes by removing heat and moisture from the air. To better understand how a fan affects indoor humidity, let’s first look at what the AC fan does and where it’s located. I have fresh new air filter, the AC is about 25 years old and it blows cold but still muggy. I made a post on here a few months back asking if it was normal for my blower to be running non stop even with the t-stat fan control set to auto. Professional. A guide to making an informed choice when your HVAC system is down, 8 Ways AC Preventative Maintenance Keeps the Repairman Away, COVID-19 & Your HVAC System: Your Questions Answered, COVID Prevention & Air Quality Technology Shown 99.9% Effective, Is HVAC Maintenance Really Worth It? While air conditioners already remove some water vapor from the air, that is not their main job. Running the 300-watt fan continuously in the “on” position will increase your monthly energy bill. 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. Changes to your ventilation system design may be needed to correct this issue. The fan does move air even without the AC running, so you might feel like you’re getting some cooling benefit. To make sure your AC unit is running as efficiently as possible, perform routine maintenance on it … Seal Leaks – Leaking seals around your windows and doors can make your home more humid! Setting your fan to AUTO instead of ON better dehumidifies your home. Anyone who lives in an area that is prone to high temperatures and muggy weather knows that relief is imminent when you have a properly functioning air conditioning … Think of how a glass of ice water beads up and “sweats” when you place it in the sun. When you switch on your system at the beginning of the summer season, knowing how humidity affects the air is a great way to both keep your interiors comfortable and keep your air conditioning unit running smoothly for years to come. Ever since we have been having excessive humidity issues. Thank you for a good explanation on humidity and AC’s! Your furnace filter will clog up quicker (even though that means it’s working), but you will have to adjust your filter more frequently. That can result in more moisture removal and better HVAC humidity control. A Love Affair. AUTO—This setting runs your fan only when your AC is blowing cold air. If your AC was chosen and installed by a builder rather than a qualified HVAC company, there’s a good chance that it was done incorrectly. This seems like a very simple solution, but less than 20% of homes in the United … Related article: 8 Ways AC Preventative Maintenance Keeps the Repairman Away. And the culprit is likely humidity. Negative air pressure is the result of a poorly designed ventilation system. Since the basement is cool already, decide whether you want the basement as part of your AC … Just three words I would use to describe my experience with Homesense. That’s because the powerful compressor turns on and off frequently, so the system never runs long enough to remove humidity from the air. “Should I set my HVAC fan to auto or on” is a question we commonly receive from Homesense customers — along with “does running the fan on my air conditioner use a lot of electricity?” It’s a debated topic throughout the industry, so we’re going to give you the pros, the cons, and our recommendation. Improve Air Quality. Most systems offer two fan settings: On and Auto . In this article, we examine the issues caused by changing humidity levels when running air conditioning units. That’s how many homes and businesses end up with oversized units that provide poor HVAC humidity control. At Homesense owner Brian’s home, he has it set ON all day because he has young children that are home and he has allergies, so the improved comfort and air quality are benefits that outweigh the costs. So in one sentence, the difference between dehumidifier and air conditioner is that the dehumidifier decrease the humidity level by drying the air making it warmer and air conditioner similarly removes humidity by cooling the air. 4. A VRF system can run longer at a lower capacity, so it does a much better job of HVAC humidity control (and providing more consistent temperatures). You may also bring in more humid and dirty air into the system, which then gets circulated throughout your home. The fact is, an oversized AC system does a poor job of controlling both temperature and humidity. The fact is, an oversized AC system does a poor job of controlling both temperature and humidity. Talk to your AC professional to see if this might work for you. Responsive. Here are the pros and cons to this approach: When keeping your air conditioner fan on or auto, there’s no boilerplate recommendation that we make to home owners, because everyone has different needs. Get a preventative maintenance planCleaning only the coils may not be enough to restore performance and better HVAC humidity control if the rest of the system hasn’t been properly maintained. Then we’ll tell you 4 ways you can get an older unit to remove more moisture so your space doesn’t feel like a tropical jungle. Actually, all the air conditioners have temperature sensor, but most of them do not have one for humidity. A well-functioning air conditioner essential acts as a dehumidifier for your home. Although the air temperature will be similar to the space temperature, your house will feel cold. 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. Running the fan continuously makes the humidity worse and your home less comfortable. The blower will automatically run at different speeds, giving you the benefits of lower electrical bills and increased comfort. 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. Ask a knowledgeable HVAC professional to recommend a dehumidifier that’s compatible with your air conditioning system. If you have an HVAC system with a fresh air intake, set the system to recirculate mode, or close the outdoor intake damper. An AC thermostat fan typically has two settings: On and Auto. Get tune-ups and change your filter. Bathrooms and kitchens are two rooms that can produce a lot of excess humidity. By running the furnace fan all the time, you are also running air through your furnace filter constantly. Leaving the fan on 24/7 ensures cleaner air, as the air is pulled through the filtration or UV light system. When your evaporator coil (indoor) is covered in dust and dirt, it can't remove … As a result, the home may never feel truly comfortable. Hence, the humidity is almost the status quo. 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. In between cooling cycles, the fan shuts off. That’s especially true at times when the temperature isn’t too high, but the air is very humid. Eventually, the process is no longer going to be effective because the air in the room has reached max – 100% – humidity. While it is true that your air conditioner blows cool air into your home, it is also multi-tasking and removing warm air and humidity. Can some system tweaks be enough to restore adequate performance, or is it time to bite the bullet and invest in a new one? Unmatched Integrity | Homesense Heating | Cooling – Indianapolis HVAC, Furnace Repair | Air Conditioning Service | Furnace Installation, Homesense Heating and Cooling – Indianapolis HVAC Repair Installation | Unmatched Integrity | Homesense Heating | Cooling – Indianapolis HVAC, Furnace Repair | Air Conditioning Service | Furnace Installation. You can end up blowing the moisture your AC has removed back into the space before it has a chance to drain away. 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. ON—This setting runs your fan constantly, even when your AC isn’t actively producing cool air. A common misconception is the idea that your air conditioning unit's only purpose is to continually blow cool air into your home continually until your house has reached the temperature you've set on your thermostat. First of all, when we talk about AC size, it’s about cooling capacity, not the physical size of the unit. Unfortunately, the answer is no. During all this, the cool, moist air is saturating the air, which increases the humidity level. This can cause problems with your thermostat and overall HVAC system. 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. In a nutshell, it means that you are venting too much air from the space. Clean the coilsThis is the easiest thing to try first for getting better HVAC humidity control from your older system. The cooling effect of the air conditioner is the main reason these machines are used. Doing so keeps it running as efficiently as possible to provide better HVAC humidity control. If you’re sweating your way through another muggy August, read on to learn more about HVAC humidity control and why your AC might not be up to the task. Excessive indoor humidity could be the culprit. Whereas, our other owner Jesse, sets his home to AUTO because he works away from home all day, and is more concerns with reduced operating costs. If the problem is bad enough, your AC may not be able to keep up, and HVAC humidity control is compromised. I'm a fan of spectacular - Homesense is changing how the Indianapolis community views HVAC companies. When humidity levels are excessive, they need to work a lot harder. Your air conditioner's fan operates independently from the cooling unit, circulating air throughout your home. Our team goes the extra mile to deliver it every day. Positive customer relationships and experiences are the cornerstone of their business. Add a dehumidifier. A guide to making an informed choice when your HVAC system is down. That’s not the only part that people misunderstand about AC size. Hot air can hold a lot more humidity, so on a hot day, outside air that is below 50% relative humidity enters your cold basement and becomes air that is over 50% relative humidity. That’s because the powerful compressor turns on and off frequently, so the system never runs long enough to remove humidity from the air. So, their working process depends entirely on the measured temperature at home. An air conditioner that’s only capable of running at one speed— basically, on or off—can have the same problems as one that’s too large when it comes to HVAC humidity control. That often means the unit doesn’t run consistently enough to remove humidity. How Humidity Affects Air Conditioning. Have you ever woken up in the middle of the night sweating with the A/C running? 2. As summer stretches into … When the fan runs continuously, it picks up the condensed water droplets and circulates them back inside the house. How To Fix – Fixing the problem is as simple as changing the thermostat setting to … Another plus: you’ll notice lower energy bills as well. You may think you’re getting rid of more humidity by using your thermostat’s FAN ON setting. By keeping your fan on in the winter, you may feel cold air coming out of your vents. Before & After Photos Tell All, HVAC System Cleaning: Banish These 5 Nasty Things From Your AC, Prevent Airborne Illness: Maintain Your Commercial HVAC Systems, The Inside Scoop on the Central Air Humidifier. That can happen, for example, in a restaurant with a powerful kitchen exhaust system. Therefore, you may end up running your AC even more, to counterbalance the extra heat. That tendency is increased when the system hasn’t been regularly maintained. If you have any other questions about your HVAC fan, send us a tweet! When you have negative pressure, the air tries to balance itself by drawing in more outside air any way that it can. 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