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Startingover 04-02-2013 04:40 PM

noisy attic fan
 
The attic fan is extremely loud. It sounds like the blade are rubbing against something.

It starts, then stops right away, then starts and stops, over and over. But it seems in the afternoon for short periods, then quits altogether. I think I can heard the motor when it's on. It gets on my nerves but I can't afford any repairs now.

How important are attic fans? I'd guess the motor that runs the fan isn't working and probably original to the house. My house does have extra deep overhangs (from the roof) so there's plenty of ventilation. If I don't need it I could get someone to come and disconnect it.

thanks

Windows on Wash 04-02-2013 04:46 PM

This time of year, they are aimed more at peak attic and shingle temperatures as compared to moisture.

They won't necessarily ruin the roof if you can fix it in the next couple of weeks but if you leave it as is, you certainly could burn down the house if it short circuits and overheats.

If you already have soffits, put a ridge vent in at this point and ditch the fan.

Startingover 04-02-2013 08:06 PM

Windows on Wash,

I'm not crazy about trying to cross the attic, but if I did, would I find a switch on the fan motor that I could just turn off myself?

ps, there are ridge vents.

thanks

joecaption 04-02-2013 08:11 PM

No one here's going to be able to tell you how your fan is wired.
Could have been done any number of ways.

jagans 04-02-2013 08:35 PM

Go look in the breaker box, maybe its on a home run and labeled "Attic Fan" in big letters. Chances are admittedly about a 1000 to 1 but hey, maybe the previous owner was meticulous. :whistling2:

Startingover 04-02-2013 09:17 PM

jagans,

tried that, but thanks, it was a good suggestion. One breaker reads, "attic fan + bath + bedroom."

I'll ask my electrician tomorrow if he can do it or recommend a roofer.

I've been meaning to find the name of a roofer.........just in case.

My last house here, built in 89, had a "Attic fan" on the thermostat. My new AC doesn't have that.

joecaption 04-02-2013 10:06 PM

Quote:

Originally Posted by Startingover (Post 1151262)
jagans,

tried that, but thanks, it was a good suggestion. One breaker reads, "attic fan + bath + bedroom."

I'll ask my electrician tomorrow if he can do it or recommend a roofer.

I've been meaning to find the name of a roofer.........just in case.

My last house here, built in 89, had a "Attic fan" on the thermostat. My new AC doesn't have that.

What's a roofer have to do with an attic fan?
No way would I want one working on my wiriing.
An A/C system and an attic fan have nothing to do with the other. Two completly differant systems.

jagans 04-02-2013 10:10 PM

Kill the breaker. Go in the attic to where the fan is. Take the cover off the junction box. Take off the wire nut on the two black wires, and put it back on the source wire. Take the wire nut off the two white wires and put it on the source wire. Curl the wires into the box, put the lid back on the junction box, or of course, fix the fan. Maybe the fan blade just came loose on the shaft?

Or, as my grandson just said "Get a new fan" He's 10, and smarter than us.

We all make things way too complicated. :bangin:

Windows on Wash 04-03-2013 07:19 AM

The fans are pretty easy to swap out in most cases. The combination of an attic fan and Ridge vent is not really the most proper attic ventilation approach but given the potentially boiling temps in FL, you see it quite often.

If you have good ventilation and the soffits and ridge are done properly and open, I would say to just yank it out.

After that, update your attic insulation to R-50 and that will help control the radiant heat gain from the roof deck.

Startingover 04-03-2013 03:04 PM

thanks,

Maybe, since the man who built this house was from NY he was cautious about the notorious Florida heat and humidity so had both fan and ridge vents put in.

The Co that put new AC in last month said the attic has good insulation.

I appreciate the help.


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