Questions tagged [fans]

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17
votes
5answers
9k views

Exhaust fumes seeping into our 4th floor apartment at night through bathroom and shower vents/fans

This is our second fall/winter in our 4th floor apartment, and we've noticed that whenever the weather becomes cool, exhaust fumes which seem to come from the garage in the basement of the apartment ...
15
votes
4answers
13k views

Is there a device that will allow a bathroom fan to run for 5 minutes after it is switched off?

There is one switch that controls the lights and fan in the bathroom. Users turn the light/fan on when they enter, and off when they leave. I'd like for the bathroom fan to run for a time after they ...
11
votes
3answers
99k views

What is the purpose of a watt regulator in my ceiling fan?

The lights on my harbor breeze fan stopped working this morning. When I came home from work, I got the ladder and took down the lights. I don't have a multimeter but I saw that there is this Watt ...
10
votes
4answers
6k views

Are new “low noise” whole house fans actually quieter?

I've dealt with a number of older whole house fans (10 years and older) and the one thing they all had in common was a ton of noise. Are the new "low noise" fans actually that much quieter than the ...
8
votes
7answers
112k views

How much energy will continuously running a furnace fan use?

We have a bi-level (tri-level? There's a small entry way and utility room, then an upstairs living area and master bedroom and a downstairs living area with bedrooms) in mid-Michigan. The downstairs ...
8
votes
2answers
11k views

How to add additional speeds to a box fan

I have a 20" Box Fan, that has 3 speeds. It's a commerical model from Lasko, heavily built, puts out a lot of air... too much actually for my normal needs. So I'd like to add speeds in addition way ...
6
votes
1answer
381 views

Where can I find a bathroom fan that will fit in a 5" cylindrical space?

The fan in the master-bathroom of my house recently stopped working. The old fan is in a 5" cylindrical housing in the ceiling and the housing is not going to come out without major work on the ...
5
votes
3answers
5k views

How can I improve ventilation in my room with a window fan while filtering pollen from a nearby tree?

This is a campus building in Aalto University where you have a tree about 10 cm away from the window. The Espoo city does not allow the student organisation AYY to cut down the tree. There is a poor ...
5
votes
6answers
8k views

Air sealing a whole house fan

I have a whole house fan installed in my house from the previous owners. I love the fan, as it lets me cool down the house quickly in the evening -- or after I fill the house with smoke from ...
5
votes
1answer
8k views

Can I control a bathroom extractor fan independently from the light?

My bathroom extractor timer fan works fine except that I have to have the lights on when it is in use. I have 2 windows in the bathroom and feel it is a waste of energy to have the lights on in order ...
5
votes
2answers
3k views

Line voltage thermostat to shut off attic fan when outside temp is close to inside?

I have an attic fan with a thermostat, but with the high heat these past weeks, the outdoor temperature is often above the thermostat setting. Thus, I'm just replacing all the air in the attic with ...
4
votes
4answers
348 views

What should I look for in a Whole House Fan

I see a lot of variance in the prices of whole house fans in the market, and not a lot of clarity or comparison between vendors and models. We're looking to buy some to install in our newly purchased ...
4
votes
4answers
3k views

Replacing a bathroom fan?

I have a bathroom fan that doesn't turn anymore. Flipping the switch doesn't do anything, but if I nudge it enough it might get going. I used to spray WD-40 on the bottom where I could see it turn ...
4
votes
7answers
93k views

Why has my ceiling fan's speed become slower?

We have owned a Minka Aire ceiling fan for about 4 years and it has been great overall; running for 24hrs a day. It has 3 settings and when we initially purchased the fan; the speed was noticeable ...
4
votes
4answers
16k views

What is considered “over a tub or shower” for a bathroom fan?

I'm going to add a fan to my currently unvented bathroom. The fan installation instructions include the text "if this unit is to be installed over a tub or shower, it must be marked as appropriate ...
4
votes
1answer
7k views

Could I safely use a dimmer switch on an air filter fan?

I bought a small HEPA air filter fan that was advertised as being a quiet model. But it's not quiet enough for me. I bought another "quiet" fan, but the new one is also too loud for my liking. Could ...
4
votes
1answer
7k views

Should I be concerned that the furnace fan is making a loud noise when it turns on?

About three weeks ago our 10 year furnace's blower motor (which also blows for the AC) died (the bearing seized). HVAC company comes out, removes the squirrel cage and motor, puts a new motor (with a ...
4
votes
4answers
16k views

How freely should a central A/C condenser fan spin?

Last year my home's central air condenser fan motor stopped working. When I noticed the house wasn't cooling down I went outside to investigate and found there was a humming sound coming from the unit,...
4
votes
3answers
24k views

Why is my A/C condenser fan motor wiring backwards, and how can I fix it?

I've just replaced my condenser fan motor on my home A/C unit with this unit: http://www.grainger.com/Grainger/GENERAL-ELECTRIC-Condenser-Fan-Motor-2PRA6 The HP, RPM's and amp ratings all match. The ...
4
votes
1answer
8k views

Water Noise When Radon Fan is On

I've got a radon fan installed in my basement, but no sump pump. Starting a few days ago, I've started hearing a constant gurgling or bubbling sound from a basement wall that is 15 feet from where ...
4
votes
2answers
6k views

Why won't the fan run independently of the air conditioner?

I have central air and heat, with a Nest thermostat. My system has Y, G, R, C and W wires coming out of it: which are wired into my Nest like so: In between, there is a splice where the C wire is ...
4
votes
2answers
2k views

Can I use an exhaust fan instead of a hood in the kitchen?

Can I install a ceiling-mounted exhaust fan (350 CFM) over my kitchen island, with 48-inch gas range, rather than a hood? If so, can you recommend an exhaust fan?
4
votes
1answer
14k views

How to stop a screaming pellet stove?

I'm having trouble thinking of how else to describe the sound that our pellet stove is making. It is a piercingly high pitched sound that appears to come from the blower. Here's a video with ...
4
votes
1answer
3k views

How does the temperature sensor work in an attic fan?

I have an attic fan that should turn on by the temperature that is set. It is pretty hot today (Southern California) so I expected it to be on. So far I have not seen it turn on and I just reduce ...
4
votes
1answer
300 views

Ice In Radon Mitigation System

I have a fan powered radon mitigation system installed in my house. It was installed in 2016 and I have not had any issues with it until this winter. I live in northern Iowa where we have been ...
3
votes
4answers
26k views

Why is my bathroom fan completely ineffective?

I just moved into my first home, and the bathroom fan is 100% ineffective. I can hear the motor run when I turn it on, and I remember going into the attic with the home inspector and tracing a ...
3
votes
3answers
2k views

Apartment cooling with fans

I've just moved into an apartment without an air conditioner in Sunnyvale, California. The weather is not too hot, but there are going to be some pretty warm days in the summer, especially since I'm ...
3
votes
2answers
16k views

Can I increase air volume by adding more fans?

I have a straight 25 foot rectangular duct that is 0.9 sqft in cross-sectional area (11" by 12"). There are openings on either end, and nowhere in the middle. I wish to move about 1000 CFM through the ...
3
votes
3answers
25k views

Why does the gas furnace blow cold air at the start of the heating cycle?

What does this problem sound like? There is a 25 year old gas furnace in the house we rent. (The guy that owns the place claims there is NO problem at all. He said the igniter is brand new and ...
3
votes
1answer
169 views

Ceiling Fan Wiring Confusion

Was expecting to find just 3 simple wires (b, w, g) and be able to hook up this ceiling fan quite easily but found this when taking out the old fan...3 sets of wires, #1 with 2 black and 1 white, #2 ...
3
votes
2answers
12k views

How do I install a bathroom fan with its own switch?

There is an existing light fixture and switch for the light fixture. I want to add a bath fan with its own switch. What is the easiest way?
3
votes
2answers
7k views

How to lubricate a buzzing fan?

I bought a little mini fridge (ok, it's actually one of those wine cooler thingies) that buzzes loudly. Took it apart and discovered the source of the problem: a little fan in there, similar to the ...
3
votes
2answers
10k views

How do I replace a condenser fan motor in a central air unit?

The condenser fan motor on my central air unit has seized up (tried like crazy to turn it it, but no go). I'm not sure how old the motor is but I'm guessing it's original, so about 12 years old. I ...
3
votes
2answers
7k views

Means of adjusting fan speed on Bryant gas furnace

My home is heated by a Bryant 359AAV furnace. The thermostat controls and indicates whether the fan is ON or OFF, but the furnace has a four-speed fan. I believe the installer set the fan on "HI" and ...
3
votes
3answers
27k views

Better to run air conditioner fan on high or low speed?

In my apartment, I have two window air conditioning units. Both have different settings for the fan speed: one has two speed options and the other has three. Both have the design that the room ...
3
votes
1answer
1k views

Can a bathroom fan be vented just outside the bathroom?

I belong to a housing cooperative in the arctic and the temperature drops below -40 C. We are having problems with mold on the ceilings in the bathroom. The buildings were built in 1984 with an air ex-...
3
votes
1answer
2k views

Reducing Attic Fire Risk

When I had my house built, it got cold and so we called the local power co-op energy savings expert to give us advice. One of the things he said was that we had the wrong kind of insulation in the ...
3
votes
1answer
2k views

Bathroom in-wall exhaust fan with dimmer?

In searching this SE, I see many questions discussing traditional ceiling fans and dimmer switches. This question revolves around bathroom in-wall exhaust fans and dimmer switches. Is it safe to ...
3
votes
1answer
6k views

How does a multi-tap motor speed control work?

I have a Home Depot, undocumented, no-name ceiling fan and I've messed up the speed control connections, and I'm trying to understand how the circuit works. I found a circuit on the internet which ...
3
votes
1answer
6k views

Ceiling fan stops after a few seconds

I just installed a ceiling fan on our patio. When turning on the power, the fan starts spinning as I would expect it to. After a few seconds however, the fan seems to be spinning only through inertia ...
3
votes
1answer
240 views

Can a GFCI combo and a switch be independently connected to a light and a fan using 14/3 wire?

The box on the left in the diagram is a dimmer switch and the box on the right is a GFCI combo switch. The ground wiring is absent from the diagram. How can this wiring be completed to connect the fan ...
3
votes
2answers
2k views

How can I wire a single gang 3-way fan control and dimmer?

My client's new fan is installed on a 3-way switch above stairs. The switches are located top and bottom, on separate breakers. The fan and light are operated simultaneously. The light attachment has ...
2
votes
2answers
2k views

What type of wiring should bedroom overhead lighting have?

On the phone with a friend in Cali this morning. He said that some municipalities are requiring /4 (12-3 or 14-3 romex) wiring for all new construction or rewiring for overhead lighting components. ...
2
votes
2answers
494 views

How much current should I expect this motor to draw when it's running steadily?

This fan lists its "Max. Amperage" as 3.2. I assume the motor draws that much when it's first turning on, then settles down to some lower current. How much current should I expect it to draw when it'...
2
votes
2answers
400 views

what tool / technique would I use to take the fan blade off this fridge motor (and re-mount it to a new one?)

Not the best picture as it's straight on - here's another from http://www.fan-and-blower.com/axial-fan-ebmpapst-bg2012/ I believe the one in my Bosch fridge freezer is on its way out as it's ...
2
votes
1answer
1k views

Can a GFCI burn out a (ceiling fan) motor?

I added a ceiling fan to an existing circuit with GFCI protection. I know, I know, they say you shouldn't because the inductance from the motor can trip the GFCI. I figured I'd risk that minor ...
2
votes
2answers
21k views

Does turning the air conditioning on and skipping its “fan” setting damage the air conditioner?

Air conditioning units nowadays allow you to switch it from "off" to various levels of "cool" without requiring you to "fan" setting first. Is there any reason to use "fan" setting (such as for ...
2
votes
2answers
8k views

Why would ceiling fan reverse air flow without me changing directions?

I have this exact ceiling fan, and so far it has worked nicely. It is mounted in my bedroom, I believe height to floor is about 12 feet and the rod from the ceiling to the actual fan is about 18 ...
2
votes
2answers
342 views

What is this metal part around the fan's motor in my freezer and how to prevent it from rusting?

A few months ago, while cleaning, I took the plastic cover off the back (of the inside) of my freezer (covers the fan and the cooler) and things looked fine: I didn't put the cover back on and later ...
2
votes
4answers
658 views

Can you put a whole house fan in an attic if you live in it?

We live in the top two floors of an old brownstone in NYC. It gets CRAZY hot on our top floor, which is really the attic of the house, but where we have our three bedrooms and one bath. It's also ...