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Garage Fan & Attic Cooler

If you spend time in your garage for hobbies and projects you know how hot it can get.  Rather than keeping this hot air up against your house where it raises your A/C work load and makes it uncomfortable to spend time on your projects why not push that hot air out through your attic and suck in cool fresh air with a garage fan.


Frequently Asked Questions


  1.   What is a GF-14 Garage Fan?


  1. The GF-14 Garage Fan and Attic Cooler has been specifically designed to cool the garage and attic. It’s purpose is simply to keep the air in the garage and attic from overheating. They turn on and off automatically via a thermostat and pull fresh air into the garage and exhaust into attic pushing the superheated air through the existing attic venting. In a conventional house with flat 8? or 9? high ceilings, a GF-14 can reduce the temperature of the rooms under the attic by about 10 degrees Fahrenheit. They also remove some heat load from the air conditioning system and allow the house to cool off more rapidly, especially at night.


  1.  What is a GF-14 Garage Fan and how does it work?


  1. It’s a large, 5 Blade Fan that usually sits on the floor of the attic mounted in the garage. The fan is mounted using mounting brackets and a hole is cut through the ceiling directly under the fan. A white grill is placed over the hole. The fan draws air into the garage from the intake grills mounted in the garage door, creating a breeze to the fan, removes the hot air in the path of that breeze and blows the air into the attic and then blows the very hot attic air out of the attic through the vents, allowing the house to cool down naturally.



  1.  Which type of fan do I need?


  1. That depends on the type of house you have and what you want to accomplish. If you have a ranch house with air conditioning and you want only to reduce you air conditioning costs, then a GF-14 Garage Fan is the way to go.


If you have a conventional two story with HOT ROOMS upstairs and you just want to reduce the temperature upstairs by 6-8 degrees then a GF-16 in the garage is just the ticket in conjunction with our Solar Powered Attic Fan in the upper attic.


  1.  How much power does a GF-14 Fan use?


  1. Very little, the same as a 60 watt light bulb. If your fan runs from May to November like it does all along the sunbelt states, the cost is less than $20-30 dollars. Much, much less power than an air conditioner uses to cool the effect of hot attic air. You can run the GF-14 Garage Fan for 10 summers for the same cost as running an air conditioner for 1 month! A solar powered attic fan uses solar energy from the sun and is not connected to the electric system of the house.


  1.  I have a powered gable fan, do I need a GF-14 Fan?


  1. Probably so. You can use the powered gable fan to blow the hot air out of the attic at any time. Some customers go ahead and install a GF-14 Garage Fan through the ceiling in the garage in order to provide some additional ventilation and to feed the power vent to work more efficiently. The new solar powered attic exhaust vents are a clever option.


  1.  What types of fans does Sunlit Homes installl?


  1. We intall only top quality garage fans, and solar powered attic fans.


  1.  Why shouldn’t I buy an attic fan from my local hardware/lumber supply store?


  1. Your chances of buying an attic fan locally, that is worthy of being installed in your home are very, very slim. The big box stores tend select the cheapest and most poorly engineered fans available for their customers. These fans have two advantages: they are cheap and they can be returned. They have several disadvantages: they are usually very, very noisy, poorly made, usually un-repairable due to the unavailability of spare parts, and often not supported by either, the retailer, manufacturer or installer. Usually the store that sells them refuses to install them. If a problem with the unit should arise, no one wants to take responsibility. Each year we remove many of these fans installed the year before because the home owner cannot stand the noise or cannot get them repaired.


We have also encountered this interesting situation: the homeowner is selling the house and the realtor tells him to get that horribly noisy fan fixed or have it covered with drywall. We have to advise him that the sound he is hearing is the sound of the fan; the only repair is to replace it completely. Not a pleasant thought compared to originally installing well made but somewhat more expensive equipment to begin with.


  1. Why should I hire Sunlit Homes to install my fan?


  1. We are experienced and will save you a lot of time over doing it yourself.  You don’t have to worry about the whole being cut right or falling off a ladder.  Plus, we clean up the mess so all you get is a professional installation and a cooler garage & attic.


  1.  How much exhaust venting do I need?


  1. The total venting required for a particular size fan is 1 to 3 feet of venting originally installed by the builder or subsequent owners. Lack of sufficient venting means that the fan will try to blow out more air than can possibly get through in time, causing the air flow to be less than optimum. Think of the loss of performance similar to that of an automobile when the transmission is not shifted into the proper gear.


It is not important where the ventilation is located. The fan will blow the air out of the attic no matter where the vents are located, as long as the air path is not blocked off.


  1. Do garage and attic fans have to be noisy?


  1. In a word: no. But there are several problems that cause fans to be noisy.


1) Most fans sold in the big box stores are inherently noisy to begin with! They are usually poorly engineered in order to produce a cheap fan. If you buy any badly designed or built product it will perform poorly. A cheap attic fan will be more expensive and aggravating in the long run than a well made fan.


2) Most attic fans are poorly made and rattle when the fan is running.


3) Most installations are poorly done. Even the manufacturers’ instructions are inadequate and are written to make the fan easier to install, not to operate at minimum sound levels.  We have been installing fans for over 3 years and have learned how to install them so that they operate quietly.


4) Many attics are not ventilated properly for garage and attic fans to operate quietly. If the air cannot exit the attic quickly enough the remaining air in the attic will cause backpressure against the fan, causing it to run more noisily.


By appreciating and correcting all these problems, a GF-14 Garage Fan will run very quietly (26 db) and have a lifespan of around 5 to 10 years! Quiet operation means that you can have a conversation standing directly under the fan without raising your voice.



  1. The upper level of my house stays hot, even with the air conditioner running all day. Will an attic fan help me?


  1. An attic fan is probably the only economical way to help your problem unless you have 2 separate A/C systems, 1 for each floor. As you recall from 3rd grade: hot air rises, cold air falls. That’s the reason that air conditioning and evaporative coolers have such a difficult time cooling the upper levels of a house. By blowing out the concentrated hot air upstairs as well as the super-heated attic air, an attic fan effectively reduces the load on the air conditioner, allowing it to work more perfectly and, on some days, eliminate the need for it altogether.


  1. Garages are fire rated. Does the GF-14 keep this fire integrity intact?


  1. The GF-14 Garage Fan is equipped with a fire damper that is held open with a 212 degree fusible link to allow the air through the fan. In case of a garage fire this link melts and closes the damper keeping the flames out of the attic for up to 3 hours. Also the GF-14 Fan motor shuts off at 185 degrees.


  1. How Do I adjust the thermostat on the GF-14?


  1. Turn off the power to the fan. Then remove the cover plate on the electrical junction box, the thermostat is the round button in the middle of the face plate. The adjustment is on the back of the thermostat. Remember that there is an 8-10 degree thermo lag. That means that if it is set at 105 from the factory the fan will shut off around 95 degrees. The lower the setting the more it will run.