Service and Repair

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Some tips and solutions to common problems at the bottom of the page.
There is a listing of some simple do it yourself repairs in the FAQs section below.
We service both types of attic fans: whole house fans and attic exhaust fans
Maintenance is usually not necessary for either a whole house fan or an attic exhaust fan. Sometimes a whole house fan will have a motor that has oil ports and is designed to be lubricated every few years. An attic exhaust fan almost never will. In any case, it is usually impossible or impractical to access these ports in the attic and are best left alone.  Cleaning the shutter and blades every few years is often the only thing that needs to be done.

IF YOU WANT REPAIR SERVICE: It would be helpful, although not essential, for us to know the following: Nature of the problem:  Humming noise? Noisy? Doesn't pull enough air? Does shutter open?, Etc.
1. Type of fan: whole house attic fan or  attic exhaust fan. (A whole house fan is turned on manually and always has a shutter in the ceiling that opens and closes when the fan goes on and off. An attic exhaust fan is usually on the roof itself and looks like a mushroom or hidden inside the attic on the end wall and goes on and off automatically and does not have a ceiling shutter.) We usually simply replace the entire unit. Repairs are generally impractical.
For Whole House fans:
2. What is the size of fan? The size is the diameter of the circle formed by the fan blades, usually 24", 30" or 36".
3. Is the fan blade connected directly to the motor (direct drive) or does the motor spin the blade by using a belt (belt drive)? Direct drive fans have the motor directly in the center of the blade, either above or below it. Belt drive fans have the motor positioned to the side, not directly over the center of the blade.
4. Type of wall controls: timer? 1, 2 or 3 speed? Variable speed?
5. Brand or model of fan. This can usually only be determined by checking out the label on the fan itself, in the attic. Nice to know but difficult to obtain. Not essential. 
Belt Drive: Sometimes an whole house, belt drive fan can be repaired or adjusted to run properly. At other times our customers find it cheaper to upgrade the older model with a quiet, more efficient fan.
Direct Drive: For most direct drive whole house fans, parts are not available and are not repairable. These are fans where the blade is directly connected to the motor. If this fan has a timer and/or a variable speed switch, repairs are sometimes possible if the fault lies in one of the switches and not the motor.
Attic exhaust fans (power ventilators), we usually simply replace the entire unit. Repairs are generally impractical.
If your attic fan requires service, call us at 303 695 7911 for a free consultation, or complete the form on the Contact Page, and we will get in touch with you as soon as possible.

1. I need a new belt. Where can I get one? 
 Ace Hardware & most automotive supply stores. Measure the old one or bring it in.
2. My fan just hums. 
Did the belt break and the fan motor is just spinning? If so, buy a new belt (see above)
Do I need a new motor? A: try spraying some lubricant into the air ports at the top & bottom of the air holes in the fan housing for about 3 seconds. Tap the motor a few times with the handle end of a hammer. Try it now. If it doesn't work you need a new motor.
3. My fan won't turn on & makes no noise at all.
Probably an electrical problem, but where? 
a. Is there a switch somewhere that controls electricity going to the fan?
b. Check the main breakers
c. Check GFIC breakers, usually in the bathroom or garage..
d. Carefully disconnect the timer & attach the wires together.
e. Carefully disconnect the switch & attach the wires together.
f. Test the motor for electricity
If you are getting electricity to the motor & it still does not run, you need a new motor.
4. My fan works but it's gotten noisy. 
If fan has always been noisy then try opening the attic hatchway & listen to see if sound is better. If so, add venting. If sound is the same then a poorly engineered was installed. Replace the fan with a good one and add sufficient venting.
If fan was once quiet, but has gotten noisy, see below:
Have you had roofing or siding work done? This might have blocked the roof, gable or soffit ventilation. Try opening the attic hatch to test.
It makes the same sound as  tires going over a rutted highway. A: Your belt is cracking. Replace it (see #1).
Other sounds: Grinding, metal on metal sounds.
A.  See if there are metal shavings around the bearings. If so, the bearings are worn out & you probably need a new fan.
A. See if the pulley has shifted and fallen so that it rubs against the housing of the motor or the fan itself. If so, readjust the pulley position and tighten set screws. Check for loose nuts, bolts & screws throughout. If screws or bolts have come loose on the fan, it is an indication that there is not enough ventilation and the fan is vibrating itself to pieces.
5. I have a direct drive fan and it's very noisy.
A. There fans are usually noisy from the beginning. Other than checking the venting by opening the attic entry hatch, there is not much to be done. Sometimes it is the shutter that is really noisy, but replacing it is normally not possible due to the fact that each company makes a different size shutter for the same size fan. Try injecting a very heavy duty grease into the shutter rivets. It might help. 
Best solution: replace with a good fan and good shutter.
6. My shutter won't close/open. 
Did you open enough windows? If you have opened as much windows as the shutter size in the ceiling, try the following: Standing on the chair, carefully open the shutter slats & look around for a spring that regulates the shutter weight. If there is one, adjust it by putting it into a different tension hole. Pull it tighter if the shutter is not opening, looser if it's not closing. 
If the problem persists and the shutter is not opening enough, consider adding more ventilation to your attic.
Is there debris in the shutter? Was the shutter painted shut?
If the problem persists and the shutter is not closing, consider cleaning and spraying a small bit of lubricant on the pivot rivets.
7. My shutter is damaged. Can I get a new one? Can it be fixed?
The shutters cannot usually be repaired. Every company made the same size fans, but made different shutter sizes! In order to replace an existing shutter, you need to find one the same size or smaller. 
A larger shutter means you will need to remove the fan and recut and reframe the opening.
A too small shutter means you will have some ceiling repair in your future, but it is still easier than reframing larger.
If you want to contact us for a replacement shutter, we need the following information:
a. Size of the hole in the ceiling
b. Is the hole completely clear or does a ceiling joist run through it.
c. Does the original shutter sit flush with the ceiling or does it drop down several inches as a box housing?
8. I have a roof mount attic exhaust fan and the top blew away. Can I get it fixed.
No, there are no replacement parts for these fans. Just replace it with a new one.

You'll say: "I should have done this years ago!"

Attic exhaust fan
gable mount

Attic exhaust fan
roof mount

Whole house attic fan