Attic fan how much cooler

Power venting is the process in which a whole house fan is powered on and the attic fan is powered on as well to help move the air out faster.

We recommend using an attic fan to boost the ventilation when you are 1 to 2 square feet shy of the venting requirement. Attic ventilation is crucial to homeowners because attics can be like an oven on top of your home, heating up your living space from above. When mid-summer comes around, a typical attic can reach temperatures of over degrees!

In a two-story home, this heat can make the top floor unbearable! Installing an attic fan helps to lower those outrageous temperatures in the attic, thus helping the home stay cooler.

For this reason, they can help homeowners feel more comfortable. If living more comfortably is not enough to attract you to an attic fan, perhaps saving money on your electric bill while preserving your most expensive home appliance will. All homeowners dread running their air conditioner. The reason for this is the duct work for the air conditioner is surrounded by extreme attic temperatures. These temperatures obviously heat up the duct work so when the system is first turned on, it begins at a deficit.

The duct work must first cool down before homeowners feel any noticeable difference in the living space. This is where the attic fan comes in! As we said before, attic fans greatly reduce the temperature in the attic which means your duct work will also stay cooler! This translates to your HVAC system reaching the set temperature much quicker, allowing it to run more efficiently, thus creating a more comfortable living environment, all while extending the life of your most expensive home appliance!

Attic fans are often confused for whole house fans. This confusion remains very prevalent today. A whole house fan is used for cooling both the home and attic. You typically run a whole house fan during the evening through into the early morning — basically any time it is cooler outside. This cools, ventilates, and exhausts all the hot, stale air in your home and attic. You would never run your whole house fan during the middle of the day when it is the warmest.

This is where an attic fan comes in. Attic fans ventilate and exhaust your attic only. You use them primarily during the day but they work well in the evening and night as well. They pull air from the outside through existing vents in your attic. The best system combines an attic fan and a whole house fan to cool, ventilate, and exhaust the entire home, day and night, and year-round. The pricing varies based on the type of attic fan, the sizing requirements, and the motor type. Both work well, but they serve different purposes.

Attic fans simply cool and ventilate the attic while a whole house fan cools and ventilates the entire homes, including the attic. The amount of electricity used will depend on the type of attic fan that you install. Traditional attic fans typically use less efficient motors and move less air meaning they are less efficient.

Smart attic fans typically use much more efficient motors and move more air meaning they are more efficient. Solar attic fans are the most efficient as they will use no electricity when there is sunlight available. Electric powered attic fans use between 20 and watts, depending on the speed the fan is running on and the model chosen. Yes, there will be no negative effects when running them both at the same time.

Depending on the type of vents you have in your attic, you can choose to install a gable mounted attic fan or a roof mounted attic fan. The only time you need to connect to a smart attic fan is to see the current conditions of the attic or to make parameter adjustments. For typical Bluetooth products, only one device can connect at a time, however, you can have as many devices as you want paired to the Bluetooth product. Careers Contact Us Support. Click for details. Careers Contact Us.

Therefore, your air conditioning will not need to work as hard. However, an attic fan will not cool an entire house. Now, what about the cost? Because attic fans take away some of the work that your air conditioning would be doing, you will spend less on running your air conditioning.

However, running an electric fan in attics could mean the cost just goes towards the attics rather than the air conditioner. So are attic fans good or bad? Well, there is thankfully an alternative to choosing between no attic fan or paying for an electric attic fan.

Solar attic fans work just like electric fans and have all the same benefits. The difference is that after you pay to install them, you never pay for them again.

They run on solar energy. So the only thing powering your attic fan is the sun rather than your electric bill. This means that with a solar fan in your attic, you can take the pressure of your air conditioning without paying for it in your attic. Unlike electric attic fans, this can actually end up saving you money every month, especially in the hottest weeks of summer. But a solar attic fan will do everything that you would want your electric unit to do. It will push out hot air in the summer.

In extremely warm climates it has been scientifically proved to cool the attic by an average of 20 degrees. And it will keep your attic dry in the winter, preventing future costly roofing and maintenance issues. Your fan will run 12 months of the year without costing you a dime after installation. Read our review on the best solar attic fans. Now you know everything there is to know about how attic fans work, and you may be getting a good idea of whether it may be right for your home.

But are attic fans good or bad? Knowing the benefits as well as the disadvantages will help you decide if fans in your attic would work in your home.

Based on our industry experience, the answer is, yes. The theory behind attic fans is that they help prevent the transfer of heat from a hot attic to the living space below. The heat in an attic on a hot day can be 20 degrees Fahrenheit or higher than the outside temperature, and using an attic fan can reduce the temperature in the attic by at least 50 degrees and in the highest floor of the home by as much as 10 degrees.

Even though it is also in the attic, a whole house fan is installed in the ceiling of the home , usually in the ceiling of a central hallway. This results in turning over enough air to cool a home in approximately one hour. Once the sun rises and outdoor temperatures increase, the fan is shut off and the windows are closed to preserve the cooler air until the evening. Attic fans are most effective during the hottest part of the day , and they are usually controlled by a timer, thermostat 2 , or humidistat.

In contrast, whole house fans are most effective in the cooler temperatures of the evening and early morning. The ideal temperature outside is at least 5 degrees Fahrenheit below the desired indoor temperature. While attic fans meet their goal of cooling attic air in any high-temperature climate, whole house fans are of more use in lower-humidity climates with hot days and cool nights.

Attic fans can also be used in the winter for different purposes. In cold climates where ice and snow are common, the use of an attic fan can pull moisture out of the attic to prevent mold and mildew from winter humidity.

Also, pulling air through the roof and soffit 1 vents can prevent dangerous ice dams from forming that will block moisture from draining off the roof. This water can back up beneath the shingles 3 , causing rot to set in. For best results, a whole house fan should not be used in combination with a central air conditioning unit on a daily basis. Running the humid outside air through the central unit all day creates extra strain on the air conditioning system.

In the heat of summer, when nighttime temperatures remain above 80 degrees Fahrenheit, a central air unit can be used effectively. Attic fans are easier to install than whole house fans because of their location and size. Installing a smaller fan on the roofline 1 or in the gable is easier than putting a much larger fan in the ceiling of the home. Even though one is less difficult, both projects should only be tackled by professionals.

Both require electricians to correctly wire the new fans and carpenters to cut the hole for the fan. An attic fan installed on the roof may need a roofer to ensure that it is well sealed in relation to the shingles 3. Also, only a professional should assess the ventilation needs of each fan and correctly install additional vents, sometimes two to four times the amount of vent space required by building codes.

This would include an insulated winter closure, ceiling grill, remote control, and timer. The average attic fan draws less than watts , making it seem like an energy-efficient home improvement, but some professionals in the field claim that attic fans are not a cost-saving investment. Many users, however, claim an attic fan is a money saver, but they do not offer documented proof of the savings.

The debate has caught the attention of some state legislatures. As a matter of fact, in its Energy Conservation Code, the state of Georgia banned the use of electric attic fans because they determined that they were not energy efficient. When the conditions are right, whole house fans are an energy-efficient alternative to central air conditioning systems. A whole house fan will draw to watts , about 10 percent of a central unit , which will draw 2, to 5, watts.

This means running the whole house fan will cost approximately 90 percent less than running a central air conditioning unit for the same amount of time.

One energy concern with whole house fans is heat loss in the winter. To maintain energy efficiency when it is not in use, the outlet for the whole house fan should be sealed to prevent heat from escaping into the attic. Noise can be a problem with whole house fans. However, newer models are quieter than those of the past. Yes, in most cases you could benefit from an attic fan.

Attic fans pull the hot air out of the attic and ultimately lower the temperature inside. Typical attics will reach degrees during the summer. An attic fan can help lower that temperature by up to 50 degrees, which translates into up to a 5 degree lower temperature inside your home. Not only will it feel cooler inside, your AC will last longer as it will not need to cycle as much. In addition, attic fans have shown to help extend the life of the roof as well.

While most homes benefit greatly from use of an attic fan, Cape Cod and Bungalow style homes are not impacted that much and it is not recommended they have an attic fan. Instead, mini-split air conditioning units are perfect for these types of homes. Yes, absolutely attic fans really work and can make a huge difference!

Attic fans expel super hot air from the attic and suck in cooler outdoor air instead. Think of it like your car on a hot summer day.

The air inside has been trapped and has gradually gotten hotter all day. When you get in, to more quickly cool your air, you roll down your windows to get it out fast as you drive away!

The hot air has been evacuated so the air conditioner can more effectively cool the car. Similarly, a house that has heated up all day will have a layer of air in the attic that is - degrees, or in some cases even hotter.

To effectively cool your home you need to get rid of that layer and let your air conditioner do its work. In combination with the proper insulation, an attic fan can get rid of the heat and get your home cool quickly! The fan comes with a humidistat as well as a thermostat, which will automatically trigger the start and stop of the device without your involvement.