Are you looking for the best attic fan of 2020? There are too many to choose from. Luckily, you have reached the right place detailing the best solutions. This information will help you make the right buying decisions.
In a Hurry!
You can go with the Broan 355BK Roof Mount Attic Fan as we found it the best performing attic fan in our checking.
- HIGH-QUALITY VENTILATOR: Attic ventilator works to remove super-heated attic air in spaces up to 1000 sq. ft. at 1400 CFM
- DURABLE: Housing constructed of 23-gage galvanized steel ribbed for added strength with mounting for lasting use
- EFFICIENT: 14" diameter steel blade is specially designed for maximum air movement
- DURABLE: Thermally protected, permanently lubricated motor is built to last
- EASY TO USE: Unit operates automatically with an adjustable, built-in thermostat for your convenience
There is a comparison table below that breaks down the similarities and differences in each brand. It will help you to choose which product to choose you can check the features side by side. You will discover some features, specifications, pros and cons, and a summary of whether the product is worth buying. Let’s go!
Top 3 Best Attic Fans Compared:
Top 7 Best Attic Fans Reviews:
The below attic fan reviews comparison table will show each product’s specs. You will learn about the models, ratings, power use, airflow capacity, number of customer reviews, and the number of square feet that these fans are capable of supplying. This information will help you make a proper buying decision. Instead of going through the long process of searching hundreds of products, you can narrow down your choices with this detailed review.
1. Broan 355BK Roof Mount 120-Volt Powered Attic Ventilator – Best Roof Mounted Attic Fan
This unit has a black dome cover with UltraViolet protection. There is a 23-gauge metal flashing, which is perfect for assisting the roof installation process and that’s why it placed as the best roof mounted attic fan in our list. It is best to use a hot tar application to prevent the machine from malfunctioning. Moreover, you can install a bird screen, if you choose. The built-in adjustable thermostat will control the temperature and the speed of the thermally lubricated motor. The material is made of metal or PVC, depending on the model.
- The fan is covered, so that protects birds and insects from getting pulled in
- Mounts perfectly between rafters
- Compatible for a bird screen installation
- Has low sound
- Will reduce the temperature inside the attic by at least 30 degrees
This unit has a black covering so you do not see the motor running. That feature adds more safety for all other entities outside. Moreover, the fan matches the style of most roofs. The unit can mount on the rafters and you can install a bird screen for added protection. However, the warranty does not last since this item has been on the market for a while. You will most likely receive a working unit.
2. Cool Attic CX1500UPS Power Gable Mount Ventilator Fan - Best Gable Attic Fan
This is a 14-inch fan with 2.6 Amps generating power for the thermally protected motor. There is also a 10-level adjustable automatic thermostat ranging from 70°F to 140°F. The unit is perfect for installing in the gable area of your home thus it took the place of best gable mount attic fan in our list. It reduces heat buildup by cooling the attic up to 1850 square feet at a 1300 CFM rating. Customers have the choice of installing the unit themselves or purchasing a professional service from Amazon. However, the 1600UPS model does not come with this option. It reaches up to 2400 square feet.
- An Amazon home installation
- A bestseller on Amazon
- More than one model to choose from
- A quality fan for a great price
- Effective cooling
Since this unit is the number one bestseller on Amazon, it shows that many customers absolutely love it. There are two models to choose from, so you do not need to limit yourself to only one. Unfortunately, if a unit has a faulty design or bad motor, there is no warranty. However, this fan is cheap, so buying it is not that much of a loss.
3. Natural Light SAF36B-FL Solar Attic Fan – Best Solar Attic Fan
This fan has a stylish blue solar panel. It is slanted at 45 degrees. Crafted with the highest materials, this fan is extremely durable. There is a very easy installation process that homeowners can do themselves. The unit is very safe to handle. There is no wiring required for installation which limits electrical exposure. All units come with an optional snap-on thermostat for measuring the indoor temperature. This fan should get installed on 3/12 to 12/12 fiberglass shingle roofs. This unit has a 36-watt powered solar panel hooked to the motor. It can generate an airflow capacity of 1628 cubic feet per minute. Finally, it comes with an extended warranty for 25 years. So do you need any other reason to not to call it not only the best attic fan but also the very best solar attic fan?
- Has an incognito black cover
- Has a stylish blue solar panel
- Comes with a 25-year warranty
- Has a Florida Rating
We cannot pass up the fact that this unit has a 25-year warranty. This ultimate benefit provides great protection for almost an entire lifetime. Moreover, since the unit is solar-powered you do not need to worry about hooking it up yourself. Also, it was constructed in the USA, which is a great investment for patriotic buyers.
4. Ventamatic CX2500UPS Cool Attic Power Gable Mount Ventilator Fan
This unit is a great gable-mount ventilation system made for a single or multi-family home roof. If you buy the unit on Amazon you can get access to the two-pack, three-pack, four-pack, or five-pack bundle from different sellers. This specific fan has a thermally protected 1 Amp motor with a galvanized steel and an adjustable automatic thermostat. The fan blades are 25 inches with balanced precision to help them minimize vibration and create better stability. Moreover, the unit is UL-listed and requires 600 square inches of intake.
- Fan blades are large for cooling off a large area
- Has a large motor
- You will get more bang for your buck when buying on Amazon
- Constructed with high-quality materials made in the USA
This mount gable fan has many benefits. Also, you can buy different bulk packs at a cheaper price. The strong galvanized steel is thermally protected, which is a huge plus. A strong attic fan will make for a happy homeowner. The unit is made with a sturdy construction with high-quality materials and a reliable motor. However, some customers believe otherwise. They say it has a poor design which requires personal modifications. Although this unit needs a bit more extra care, it seems like it is highly recommended.
5. Air Vent Inc. Gable Attic Ventilator 53315 Attic And Whole House Fans
This fan can generate 1/12 horsepower and produce an electrical current of 32 Amps. The blade is 14 inches, so it is pretty big for its size. Big enough to supply enough air to the average home. Therefore, it can reach over 1500 square feet. DIY Installation is easy but homeowners can get a professional installation service on Amazon. The service consists of the rep coming to the home and connecting a power source to the fan. Then, a seal application is applied. Finally, functionality is tested. This unit generates a lot of power, according to the thermostat requirements. It also serves as the perfect greenhouse fan.
- Six large blades
- Could get mounted on a 25 degrees horizontal roof
- Lasts long
- Professional Installation from Amazon
The fan is big and covers a large number of square feet. Your home would get all the air that it needs. If you are a person who prefers not to complete the installation yourself, then you are in luck. There is a professional Amazon installation service provided at an affordable price. Although this unit is made of plastic, it has a sturdy design for proper airflow. It is strong and reliable.
6. Broan 353 Gable Mount 120-Volt Powered Attic Ventilator
The Broan 3535 attic fan generates at least 120-volts of power and provides 1050 CFM reaching up to 1,630 square feet of attic space. The fan is about 14 inches and made with a 22-gauge metal galvanized housing unit which reduces the sound flow. There is a rib cage for extra strength. You will get a strong unit that you can use easily. You will learn how to use the ventilation system properly by visiting the Amazon selling page that has detailed instructions. The Braun brand has sold high-quality residential ventilation systems since 1932. All units are manufactured in the United States in Wisconsin and Ohio with local and imported high-performing parts. Patriotic buyers will love this!
- Has a long-range
- Covers a nice amount of area
- Operates quietly
- Manufactured in the United States
This attic fan has large blades covering a large amount of area, which is a huge plus. The unit is constructed for easy installation. It will always stay quiet while heating up or cooling down the attic. This product comes from a manufacturer that has created fans for a very long time. They have the necessary experience which makes them trustworthy.
7. Air Vent Inc. 24" Whole House Fan 54301 Attic & Whole House Fans
Offering great value to customers, this product is extremely durable. It can withstand the toughest of bruises and lasts long. Moreover, it is easy to install. You will find the automatic shutter mechanism useful. The large blades produce an air flow capacity of 4500 CFM that will reach 1500 square feet. Luckily, some customers claim that it is can reach up to 3600, which is a huge plus.
- Very large blades will regulate the temperature in a large attic
- You can control the thermostat through the Amazon Alexa virtual assistant
- Some customers report that this machine stays operational up to 15 years
Although this unit is made in China, it still seems like a good choice. Moreover, it has a large blade which is a plus. Based on the complaints, this unit does not seem that bad. However, it is a bit pricey, which may turn some buyers off.
How To Choose The Best Attic Fan
The best material for an attic fan is metal. Stay away from plastic because it tends to break quickly. However, if the materials are made with high-quality USA parts and constructed to the highest standards, then you can choose a cheaper material that has a more quality build.
Always practice safety when you install the unit. Preferably, you want to buy an attic fan that has a cover. Not only is it stylish and incognito, but it will protect birds and insects from falling inside. Sometimes mounting a fan could be an extremely dangerous activity, depending on the interior design of your attic. This will create an inconvenience if you need to reach up and not paying attention to your surroundings. Keep in mind that you are in an attic, so things can go wrong at any time. Always practice a safe installation when working on any piece of machinery by wearing hard hats and gloves. Moreover, bring ladders and the right type of tools with you. If you need a whole house fan, it is best to repair or install it on a work desk. Then, take it upstairs to the attic and complete the process. Whatever you do, make sure the circuit breaker switch for the attic is turned off. Not unplugged, but turned off completely. Triple check it to make sure. Another piece of advice is to never install an attic fan in a house that has a gas heater or gas furnace. When an attic fan is turned on and those appliances are going, the dangerous gas buildup could create a potentially deadly situation. When the weather gets cold, make sure to protect the house fan from getting damaged by putting a cover around it. Another piece of advice is to never plug too many power supplies into one extension cord. Try to only connect the attic fan to a new and intact extension cord.
Easy to use
It is very important to choose an attic fan that you can install yourself. This way, it saves you money from getting a professional service. Usually, the units that come with instructions are the best ones. The benefits of a solar-powered attic fan are no wiring, easy to insulate, and easy to mount. Luckily, most units are constructed in a way for basic DIYers.
Choose a fan that you will feel comfortable using. While shopping online on in person, envision a style that would fit your home and roof perfectly. Take a photo of your roof with a mobile device before going shopping. Ask a salesman, friend, or a family member for advice. This attic fan will be the ultimate tool that cools down your home for the best comfort. An attic fan that has a thermostat is a huge plus. Not only can it heat up your home in the winter, but cool it down for the summer. Therefore, your body will stay at a comfortable temperature all year round.
Most attic fans are affordable and installation is not expensive. However, the accessories, materials, and installation products increase the prices. This includes siding, shingles, gable mounts, and roof-mounted vents. It is very important to find a support area to install your attic fan. If you do not have one, then you might need to create one. Moreover, if you do not have installation tools, you might need to buy them. However, the money you pay upfront is worth the amount you will save later.
Pre-purchase considerations for the attic fan - Some others features you might look at
It’s important to ensure you get the best possible attic fan for your household needs. Here are some things to consider when choosing a fan for your attic.
Which style is right for me?
Choose a fan depending on the type of temperatures you experience in your attic space. Among your options are solar fans, whole-house fans, or venting fans. You can also choose to mount them onto the gable or directly on the roof.
Venting fans push hot air out and suck cooler air from the atmosphere into the attic. Whole-house fans circulate cool air throughout the entire house while drawing it up into the attic. Solar fans depend on sunlight to power up and keep your attic cooler.
There are two ways to install your attic fan. You can either mount it onto the gable or directly on the attic roof.
First, ensure the vents are big enough to fit the fan. You may need to adjust the vent holes to make room for the shutter and the fan.
For mounting your fan on the roof, you need to drill a hole underneath the shingles. After you secure the fan flashing onto the shingle, install electrical wiring to connect the fan to the power.
What about cubic feet?
Each cubic foot represents how much air your fan can move around each minute. For larger homes, you’ll need more cubic feet to get adequate air circulating in the attic. To get the cubic feet, you first need to know your total floor area or square footage.
Measuring the square footage:
To understand the total volume of air in your home, measure the floor area first. Next, multiply the length by the width of each floor area around the house. To get the total square feet, add each floor size together. To get the cubic feet, multiply the total square feet by the average height of your attic ceiling.
Measuring the cubic meters
To calculate cubic feet, multiply the overall air volume in your room by 30. Next, divide the answer by 60 for the total cubic feet of air circulating per minute.
For example, if your space is 1,600 square feet, and your attic ceiling height is 6 feet – 1,600 x 6= 9,600 cubic feet by volume
Multiply 9,600 x 30 = 288,000 cubic feet of air per hour
Divide 288,000 ÷ 60 = 4,800 cubic feet of air per minute (CFM)
Which size fan is best for me?
Attic fan sizes range between 24, 30, and 36 inches in diameter. Choose the size that’s adequate for circulating the volume of air you need.
In order for the attic fan to cool attic air, the area needs enough vents to help move the air around. Installing air vents around the rafters allow the attic fan to draw in air to regulate overall attic temperatures.
Most attic fans will produce some type of noise over time. Some may start with a faint humming or get louder with wear and tear. A few tweaks to the screws and blades can help minimize noise.
What is an Attic Fan?
An attic fan is a circular motored machine. It is mounted on the roof to disperse cool air through the home. Hot air from the outside will heat up the house. However, when the attic fan turns on, it pushes the hot air back outside and accepts the cool air. These fans help keep the air fresh by limiting pollutants, such as smoke and carbon monoxide, that normally gets trapped in the home.
The fans are controlled by electric or solar power and regulated by a thermostat. One benefit of having an attic fan is lower energy bills. There are three types of attic fans. They are a whole house fan, solar fan, and an exhaust fan. Studies show that having proper ventilation throughout a room will actually improve sleep. This is because there is less CO2 in the air, which means less poison and more fresh air.
What are the Attic Fans Used for?
Sometimes air can get trapped in the attic creating a hot moisture-filled environment. This can cause damage to the attic or even health problems for people in the home. Proper ventilation from a cooling system is needed to help keep the air clean.
The differences between roof-mounted attic fans and gable-mounted attic fans
Attic fans operate to help you regulate the temperature in your attic to keep it cool and comfortable. You can opt for gable-mounted or roof-mounted attic fans.
Here are some differences:
Gable-mounted attic fans
They are usually larger than roof-mounted attic fans and can give off more air per cubic foot.
Since they give off more air, they can cool your attic much faster than roof-mounted attic fans.
They tend to be cheaper than roof-mounted fans.
Installing a gable-mounted attic fan will normally take a bit longer than roof-mounted attic fans. They are mounted on the inside wall of the attic, at the back of the attic vents. If you do not already have a gable vent, you will need to install a shutter for venting.
You will also need to create a hole in the gable to fit the fan, as well as mount it onto a wooden sheet. Next, you have to install the shutter and then make the connections for the electrical wiring.
Roof-mounted attic fans
Most roof-mounted attic fans are smaller than gable-mounted attic fans.
Roof-mounted attic fans sit in the attic roof over a hole in the roof deck. They are usually a bit easier to install than gable-mounted attic fans. The base sits underneath the roof shingles.
Make an opening close to the top of the roof and mount the fan over the vent hole onto a metal or plastic base. Next, connect the wiring to the power supply in your house.
How to use attic fan?
Some people cannot afford or choose not to have central air-conditioning in their homes. If this is your case, then an attic fan is a great alternative to regulate the temperature. First, you need to determine the best intake location. Install the fan in an area where it is the hottest, which is usually in the attic. You can do it yourself or hire a professional contractor. Some Amazon orders have a professional installation service available.
Read the directions for step by step instructions as you complete the installation. Every little piece matters. Perform each step as you go along through the list because they are hard to memorize. Determine how large your house is by measuring the entire area. Get the length and the width of every room and then multiply those numbers together. Make sure the fan could reach that amount of square feet. Always look for the CFM (cubic feet per minute). After that, just plug in the fan to a power source; it could be a wall current or extension cord. If the unit is a solar fan, then you can simply install it and let the sun do all the work.
Set the thermostat to the desired temperature. Each unit normally has an easy-to-work switch or dial box that requires little maintenance. Opening windows in the lower levels of the house will get the airflow going. Tighten the screws and balance the blades so they stay quiet while turning.
How does an attic fan work?
An attic fan is a ventilation system that will regulate the heat inside the home and cool down the temperature. Heat typically circulates inside the home and the attic fan pushes it out.
Many attic fans use multiple sources of energy. However, the most popular are electric and solar. The electric energy comes directly from the power socket in the home. The solar energy comes directly from the sun. Both have their pros and cons.
Once you have an attic fan installed it is time to turn on the thermostat to set the temperature. The fan will go to work to achieve the desired climate. When the attic reaches over 120 degrees, that is when the fan will turn on and the cold air is normally pushed out of the vents.
Moreover, the attic fan is energy-efficient since it does not use much electricity. This, in turn, save you lots of money. Always mount the attic fan to the highest point of the house for the best results. Ultimately, an attic fan also reduces indoor allergens and freshens the environment. All of this information and more is described in the link below.
How do solar attic fans work?
A solar attic fan works different from a regular fan. The solar attic fan works with your vents. When the sun is beating down on the roof, an average motorized fan can use a lot of electricity. However, a solar fan is only using the sun for power, which is great for homeowners living in hot states, such as Florida and Texas. A solar fan uses the free solar energy, which a natural light source, through the high-impact photovoltaic solar panels. That is the best choice for the environment. These fans will run during the day when the sun is out and turn off at night when the sun sets. This means the solar fans will likely last longer than the electric ones. Additionally, solar fans are easy to install when they are fresh out of the box.
There is so much more information to learn about solar fans.
The advantages of using a solar-powered attic fan
Solar-powered attic fans attract power from the sun in order to operate. They are worth considering if you are looking to replace an existing fan or buy a new one.
Here are some advantages:
They are economical
Since the fans rely solely on energy from the sun, you’ll save on energy costs. By using less electricity, you reduce your overall energy costs.
They are simple to set up
There are no wires to connect, no holes to drill, or any structural changes to your roof or gable to install solar-powered fans. Setting it up is easy and hassle-free, and it can be up and running in less than one hour.
They offer consistent cooling
Solar-powered fans tend to vigorously draw hot air out of the attic as opposed to only allowing air to flow inside. As it zaps hot air out, cooler, fresher air circulated to cool the attic as well as the entire house.
They help minimize heat damage
Moisture in winter and extreme heat in the summer can cause wear and tear to your roof and attic. By evenly balancing attic temperatures, solar-powered fans can help reduce mold and mildew in winter. Likewise, in the summer, the fan can help regulate the heat to protect the roof from severe damage.
They emit less noise
Unlike most energy-powered fans, solar-powered fans are quieter, even while operating at maximum power.
How to install an attic fan?
First, determine the square feet of the roof and the vent size. Then, you need to install a shutter. If the gable vent is smaller than the attic fan then you need to get a shutter and remove the old vent.
Look for an area where you want to install the attic fan. Getting a plywood cover might be your best bet for assistance. Cut 2x10 pieces to fit between the ceiling joists. You need to mark them a circular diameter of the fan with a pencil. Then, you need to cut around that. From there, you can just put the fan on top of the hole and screw the sides into the shingles. Clear the nails from the shingles. Preferably, the hole should be the same size as the attic fan. Once you snuggle the fan on the roof use the shingles to cover the remaining metal.
If you have a fan without a base then you would need to create one out of wood. For more information about how to do this, click here.
How to install a solar attic fan?
Some solar attic fans are very easy to install. Just read the directions and you will most likely be successful at doing it. Usually, the only things you need is to cut a hole in the place where the solar attic fan will get mounted. Then, screw it into the roof. Some materials that you will need for this job are a reciprocating saw, ladder, drill, wire strip pliers, tape measure, hammer, a powered screwdriver, and an adjustable wrench. Once you have these things it is time to get to work!
First, you need to lean the ladder up against the house and climb up to the part of the roof facing south. Use the tape measurer to pinpoint 18 to 24 inches from the top of the roof. If you plan to install two attic fans, separate them by at least 15 feet apart. When you are inside the attic, create a circle identical to the diameter of the fan. Drill a screw through the center so you know the starting point on the other side. Create that circle on the other side of the roof as well.
Use the saw to cut around the hole. It could be between 14 inches and 24 inches, depending on the size of the attic fan. Remove the excess shingle material around the circle. Position the fan over the hole and put the intact shingles over the excess panels. You can secure the fan by screwing the ends into the roof.
How to wire an attic fan with a thermostat?
Turn off the power of the circuit breaker for the attic and find the thermostat. Look for the negative and neutral wires which are normally differentiated by white and black cords. If possible, get a voltmeter to measure whether there is an electrical current that comes from the attic fan so you do not get shocked. If so, stop what you are doing and make sure to cut the unit off completely.
You can mount the new thermostat on the rafters on a plywood frame. Get an NM cable and run it from the attic light to the thermostat. Connect the cables. Moreover, you can strip any cable if you find it necessary. Connect the cords directly to the motor. Put the caps on and voila you are done! Put the wires back inside and clamp on the housing.
When this process is completed, restore the power and continue using the fan. Normally, most attic fans come with some type of thermostat directions that you can follow. Or, you can call an expert to wire up the thermostat system if you do not feel comfortable.
How to insulate an attic fan?
It is very important to insulate an attic fan to prevent air leaks. If you have a vent at the bottom of the attic, connected to the main house, then a different insulation material is required. You can move a storage deck, dam, or foam box over the whole house fan. Sealing the rock and pipe holes is also a must. Use caulk, foam, or batt insulation.
Rock wall insulation normally comes with a house. If this is the case, then you are in luck! You could still put some cellulose on top of it for added protection. Make sure the cellulose is leveled out with a rake.
Sometimes you will find a paper or polyethylene attached to the bottom of this type of insulation. It is called a “vapor barrier”. It will catch the moisture from certain insulation material if the attic gets too hot. If the paper barrier is removed, the insulation material will eventually get wet and become useless. You could put it in a perpendicular area of each corner. Feel free to cut the batt insulation if needed. The best part about these insulating materials is that you could still store things in the attic on top of them.
When you want to heat up the house, the vapor barrier should point down. If you want it to get colder, it should point up.
A well-written article based on this will help you to understand more about this.
How to replace an attic fan?
The first step is to think about safety. Turn off the power of the circuit breaker connected to the attic. Then, you can start pulling the shingles off of the roof to get the attic fan loose. Next is to disconnect the thermostat cords which are usually white and black from the fan. Unscrew the caps and remove the screws from the brackets holding the motor in place. Then, wiggle it out.
Usually, the attic fan comes with instructions. You can replace the fan by reversing the steps above and follow the rules of the installation. The process is very simple and easy.
How to replace an attic fan motor?
Many customers suggest buying a whole attic fan set that includes the thermostat, housing, blades, wiring, and the motor. It actually costs the same price or sometimes cheaper than the motor itself. In this case, just follow the installation process above. If you decide to only replace the motor, check if the thermostat is still useable. If it isn't, then buy a new one. Wear insulated gloves for protection before beginning the insulation process. Look for a splice box next to the main unit. Unscrew the cap and disconnect the wires. Remove the wood screw from the brackets holding the motor in place. You could use a ⅜ ratchet or hex-head wrench. Bend the brackets and wiggle the fan to get it out. Connect the new motor in the same place. Screw the connectors tightly just as they were before. Attach all the wires to their rightful colors.
This process is easier than it seems.
Why & when to use an attic fan?
An attic is an expensive way to lower the temperature in the home. The hot air from the outside flows out of the attic while the cool air flows inside the windows. This creates a comfortable environment for everyone in the house to enjoy. More water vapor is created when the dishwasher is going, house guests are cooking, or when someone is bathing. These droplets can travel into light fixtures, exhaust fans, and rafters which will eventually damage different parts of the home.
Or, they can become frosty overtime during the winter. Mold and fungus can also grow as well. Studies show that long-term exposure to mold can have harmful effects. An attic fan prevents this from happening by regulating the temperature. It pushes out the hot, stuffy air and pulls in the fresh air. Solar fans are wireless, so they are convenient to operate. Also, they have no carbon footprints which limits the number of fossil fuels floating into the air from power plants.
Most articles suggest that you should use an attic fan during the late evenings and early mornings. Moreover, attic fans should be used heavily in the summer.
What are the Benefits of Attic Fan & Solar Attic Fan?
An attic fan and solar fan are beneficial because they use a minimum amount of electricity compared to air-conditioning units. Moreover, there is no extra money needed for upkeep. All power comes from the sun feeding the solar-powered units. Additionally, installation is quicker and easier. Both attic and solar fans prevent moisture buildup that could lead to mold and mildew. These harmful organisms deactivate in the cold.
Additionally, attic fans will prevent ice from forming in the attic during the winter months. They also create negative pressure inside the home to keep harmful gases from developing and getting trapped inside. Another important benefit is the roof protection. A high amount of heat can permanently damage different parts of the roof. It can lead to damaged asphalt and cracked shingles. Metal objects around the attic could rust out when extra moisture is present.
Attic fans also adopt the energy from the air conditioning units and central air. This helps keep them from working so hard. It also saves you money the long run from a decrease in electricity bills. Moreover, the lifespan of the HVAC system is extended because these attic fans are cooling the house.
Using the attic fan for moisture and mold reduction
Keeping your attic dry is important, not only to control the amount of cold air getting inside but also to help reduce moisture and mold. Cold air blowing through your attic can cause drops of water to form as the humid air comes into contact with the moisture.
The condensation helps form mold as moisture builds up in the attic walls, roof, and insulation ducts. If the overall ventilation in the attic is not enough to keeps the air moving, mold will quickly settle and form spores.
Mold can help trigger allergy symptoms in some children and adults. Some symptoms may include itchy, watery eyes, itching skin, and flu-like symptoms. The humidity in the attic changes during the winter and cooler months.
An attic fan can help regulate the temperatures by sending cold air out while extracting drier air from the outside. The attic fan also circulates air more regularly in the attic, and especially when you need it most. The cooler air from the fan also helps keep the air dry, dispersing the cold, and thereby reducing moisture and mold.
Some types of attic fans offer options to work at specific times to provide the correct levels of ventilation for your needs. However, it is important to ensure there are enough supporting gable or roof vents to help the fan extract enough air from the outside.
Are attic fans worth it?
Attic fans are definitely worth the money that you spend. In the long run, they keep the house cool, so all guests and residents stay relaxed and comfortable. The air stays fresh, which helps people stay healthy and happy. More importantly, attic fans are energy-efficient. Therefore, you will save money. Central air and box fans will eat up the electricity bill when they are constantly running. However, the attic fan uses the least amount of energy while delivering maximum results. Most attic fans run about 10 to 15% the amount of electricity compared to regular air conditioners. Moreover, they reduce allergen and the risk of asthma. Attic fans are an overall great investment, especially in the summertime.
When to use an attic fan?
You should use an attic fan when you leave the house in the mornings. During the day, the attic heats up, sometimes over 160°F and transfers to different parts of the house. Turning on a house fan will just circulate and recycle the hot air. This prevents sleep and becomes unbearable at times since the heat is trapped. The attic fan pushes the hot air outside during the day, which allows the cold air to come in. So, when you come back home the air is cool and fresh. Preferably, turn on the attic fan from 9 am to 5 pm. If you stay home during this time, make sure the fan is on at noon when the sun is at its highest and the weather is at its hottest.
What is the purpose of an attic fan?
An attic fan regulates the temperature of a building. The exhaust pushes hot air out into the atmosphere while the cool air comes in through the windows. You can change the temperature based on the thermostat programming. You can also mount an attic fan on a gable or roof. It is your choice.
What size attic fan do I need?
It really depends on the size of your house. Of course, a large house needs a large fan. In this case, you might want to consider getting a 24-inch fan. That should be big enough. Two units might be needed for multi-family houses. Smaller houses would be just fine with a smaller 14-inch fan. One important aspect while shopping for an attic fan is looking for the CFM (cubic feet per minute). One equation you could use to ensure you are buying the correct fan is dividing the cubic feet of air per minute by 300. The higher the CFM the more space it can reach. Therefore, a larger fan is needed.
What temperature should an attic fan get set at?
Most professionals recommended that the thermostat settings should get programmed between 100°F to 100°F. Others suggest keeping the temperature between 95°F to 100°F. Although this temperature may seem high, the fan will regulate the indoor climate properly. Automatic fans will start when the attic reaches a certain humidity.
How many attic fans do I need?
You only need one. Just make sure that you purchase a high-quality product with all the necessary specs. Research the fan thoroughly before buying. The only reason to buy more than one fan is if you have more than one attic or a bigger house. Always make sure that the unit can supply enough air to the entire house. The bigger the house, the bigger the unit. Also, you can purchase an extra backup fan just in case the motor fails on your primary one.
How to calculate CFM for an attic fan?
You can use an Attic Fan Calculator to get this information. Simply type “Attic Fan Calculator” into your preferred search engine. You will find multiple websites catering to this CFM finding process. The website will ask for the type of attic area, attic height, roof construction, and even the color of your attic fan. This information will be used to get the required CFM. You could also measure the length times the width for each floor. Then, multiply the total by height. After that, add everything together. Viola!
You have just finished reading the detailed guide about choosing the best attic fan of 2020. There are many attic fans on the market today, but the comparison chart above has given you the best choices. You do not need to worry about suffering inside a hothouse anymore because an attic fan will push out the hot air and bring in the cool air, which will melt the stress and frustration away. Stay cool and good luck!