Questions tagged [exhaust-fan]

For questions about exhaust fans -- i.e. fans used to remove air from specific rooms in a building and exhaust it to the outside in order to control humidity and/or combustion products. Exhaust fans, unlike [ceiling-fan]s, are installed into the building's structure, either in a fitting within the room's ceiling, or remotely, drawing air from the room via a duct and grille.

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2k views

Possible source of dripping from bathroom exhaust fan?

During the winter, I experienced "Chinese water torture". The bathroom exhaust fan is located above the toilet. While seated on the throne, drops of water would hit my head every so many seconds. ...
3
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1answer
521 views

How do I calculate the proper fan size for a bathroom exhaust and the number of pickups?

Getting ready to remodel my bathroom and I'm thinking about installing an inline fan to reduce noise. I'm looking at Panasonic 120 and 240cfm models. Bathroom is 7' x 8' x 8'. With a shower in one ...
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5answers
38k views

Do I need a vent fan in an interior laundry room?

I am renovating a few rooms including an existing laundry room. It currently has one exterior window and another openable window onto an existing mudroom (which also has exterior windows). After the ...
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1answer
7k views

How do I install a bathroom exhaust fan?

I need to know how to wire a bathroom fan with a light and night light. The wiring has a black/white red/white blue/white and green. The bathroom has a light switch for the light fixture over the ...
2
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3answers
670 views

How can I wire this bathroom fan into the middle of an existing circuit?

I am upgrading a bathroom fan from below (no attic access) and replacing the single pole switch with a timer switch. I’ve wired switches and outlets before, but this one is throwing me for a loop. I ...
2
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1answer
7k views

Why does my bathroom exhaust fan drip during the summer?

I've seen a lot of questions (including one on this site) about condensation on bathroom vents. However, they all seem to take place in winter, with consensus being that as the warm air from the ...
2
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1answer
46 views

Light and fan switches

I would like to have a double wall switch for the toilet where one switch (#1) turns on both the light and the fan while the second switch (#2) turns only the fan. Please note the light and the fan ...
2
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1answer
429 views

Belt and pulley fell off 40" attic fan & my repair failed (updated)

Summary (also see photos of fan and motor below) Update 2: I bought a capacitor for small dollars and now the fan works again, perfectly. Update 1: Capacitor was indeed broken (see photo at end) ...
2
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1answer
894 views

How can I vent my kitchen exhaust through vinyl soffit?

My 1950s ranch had a loud, ineffective kitchen fan that I decided to fix up this weekend. Turns out that when a previous owner had vinyl siding added, they simply put the vinyl over the vent. I ...
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2answers
2k views

Can I vent a basement bathroom into a semi-enclosed crawlspace under an attachment?

I'm refinishing my basement bathroom and installing a vent. I can easily vent out to this wall, but the thing I'm worried about is it's semi-enclosed. In the winter we put up tarps and store wood here,...
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2answers
11k views

Should I vent my kitchen range vertically or horizontally?

In a planned kitchen remodel, one upgrade is to install an outside vented range hood. My choices are to vent vertically up through the roof or up and then horizontally (8') out the kitchen wall. The ...
2
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1answer
31 views

mounting fan/light in very tight enclosed space over shower

I am installing a combo shower fan/light over a walk-in shower; it is meant to be installed in the typical fashion (for recessed fixtures) of two adjustable-length brackets meant to span the gap ...
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2answers
2k views

Bathroom Wiring - Existing light - Add Bath fan - Add gfci outlet

I have a single light fixture in my bathroom on onw switch. The room has no fan and no outlets. I want to add one fan, and add one gfci outlet. I have two ideas. Looking for pro / con / feasibility +...
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4answers
1k views

Dryer Vent Exhaust Fan

My wife and I just bought our first house. I think that we discovered that our dryer vent is going to require some regular maitenence to keep it clean and able to dry our clothes. When we moved in, ...
2
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1answer
3k views

Disable the timer on an exhaust ventilator

I have a bathroom exhaust ventilator installed that turns on when I flip the wall switch and that continues working on a timer when I cut the power in the switch. In terms of wiring, I see 3 cables ...
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1answer
2k views

What are some tips for installing a roof cap?

I am adding bathroom exhaust fans. The roof caps I have attach directly to the duct (this is not the model I have, but it clearly shows how the duct attaches): I had a lot of trouble trying to get ...
2
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2answers
783 views

Should I increase the duct size of my bathroom fan outlet?

I have a new bathroom fan that I'm installing that is 70 CFM. It will only be in the water closet part of the bathroom as the bathroom already has a larger 150 CFM fan in it. The 70 CFM fan has a 3 ...
2
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1answer
151 views

Adding exhaust fan to semi-rigid dryer duct

I recently moved into a new house purchased by my friend/roommate/landlord. I plan on setting up my electronics workshop in the basement laundry area this weekend. Although there is plenty of space, ...
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2answers
6k views

Wiring Bathroom Exhaust Fan With Heater

Unfortunately I did not take a picture of how the original fan was wired, but I have 5 wires going to the fan, and the fan appears to have connections for 7, help? Schematic: Wires to the unit: ...
2
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1answer
585 views

Fan humidity switch doesn't install

I'm trying to install a humidity sensing switch for a bathroom fan that requires a neutral. There are two switches in the box, one for a light, one for the fan. There are 3 white wires (assuming they ...
2
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1answer
190 views

Replacing bathroom fan - hums

Purchase new bathroom fan (not a big project guy but this seems pretty straight forward). Hooked up wires, white to white, black to black and green to green. Connected power and turned on fan. It just ...
2
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1answer
2k views

How should I install a bathroom exhaust fan in a 2nd floor bathroom?

I would like to install a bathroom exhaust fan in my 2nd floor bathroom, due to moisture issues. There is no existing fan, only a light fixture. There are two exterior walls in this room and the attic ...
2
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1answer
232 views

How can I separate the fan and the light in my bathrooms?

We've got four bathrooms, all wired so that the light and the (extremely loud) fan are on the same switch. Each one appears to have two blacks wires (both connected to the switch, different screws on ...
2
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1answer
506 views

How can I cool an under the counter icemaker?

We have a Subzero under the counter ice maker. During our hot summer days it really gets hot and slows the ice production down to a crawl. We thought we would install a cooling fan on the wall behind ...
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2answers
3k views

How effectively a pedestal fan blowing inward can bring the outside air if kept 2 feet away from a fully open window?

other Facts: Window(s) size 3.5 feet* 5 feet (width) Fan (2 nos.) Specifications Product page - specifications Sweep size: 400 MM RPM: 1280 Air Delivery: 75 CMM (What is the formula to convert ...
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1answer
4k views

How can I vent my bathroom through a ground floor vertical-slider privacy window?

I live in an old style garden level unit in Chicago (roughly 80 years old). The bathroom currently has no ventilation. The window is cracked and I'll leave the bathroom door open when I shower, but ...
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1answer
3k views

Is it code compliant to vent my bathroom exhaust through the turbine vent in our attic?

My contractor wants to vent our bathroom exhaust fan by connecting tubing to our attic turbine vent (aka whirly bird) to exhaust it to the outside instead of plumbing it to the outside through the ...
2
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1answer
2k views

Should I use a centrifugal or axial fan for server room ventilation?

First of all I know this is a strange one. We have a server room which is small and a few servers in there. We have an AIR CON in there but we also have a ventilation duct which is a follows: 9 ...
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0answers
101 views

Replacing Exhaust Fan in Bathroom and connecting to semi rigid aluminum duct

I am replacing my exhaust fan in the bathroom and having a hard time connecting the new fan to the aluminum semi rigid duct, because is hard to compress, extend or curve. How can I make this easier ? ...
2
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1answer
182 views

Is it code compliant for a new construction bathroom vent (no shower) to go down and then over?

I have a challenge on my second floor where a curved steel roof insulated with spray foam makes the best option for a half (toilet/sink) bathroom fan's vent to route down and laterally out the side of ...
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4answers
1k views

Why is my Panasonic Whisper series bath fan starting up so slowly?

I recently had a Panasonic Whisper Series bath fan installed in my bathroom by a plumbing/HVAC company and wired up by a separate electrician. The fan starts up extremely slowly: it sounds like ...
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1answer
853 views

Bathroom exhaust vent into crawlspace

It is acceptable to vent a bathroom exhaust fan into a crawlspace? The crawlspace in question is uninsulated, has a dirt floor, and varies in height between 5' and 7'. The vent would enter roughly in ...
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2answers
980 views

Is it alright for an exhaust fan to vent into the loft? [duplicate]

I live in a rented property, when I moved in a new bathroom suite had been installed. We however have had chronic condensation problems in the property. when going into the loftspace I could not ...
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3answers
46 views

Identify this bathroom extractor fan?

I have a bathroom extractor fan that has gone bad, so I need to replace it. If possible, I would like to just replace the motor, rather than opening up the ceiling to put in a whole new enclosure. The ...
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1answer
182 views

How to wire 3 separate switches to a single exhaust fan

I have installed multi port exhaust fan in the attic to serve 3 separate bathrooms. How can I wire the fan so that the fan can operate independently from a switch in any of the bathrooms?
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2answers
107 views

difficulty of replacing bathroom fan

I have a fan in one of the bathrooms of a 1930s house and there's a relatively low ceiling. The fan seems to work ok and it's in pretty decent shape(seems to be from 2013), but I think we need a bit ...
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1answer
443 views

Disconnected Loud (IMO Useless) bathroom exhaust fan

Moved in to my apartment recently. The bathroom ceiling exhaust fan has been unbearably loud. I called my landlord maintenance and they only made it worse (they thought the problem was the light ...
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3answers
4k views

Can I replace my bath fan with one of similar size?

I have a very small bathroom with an electrically powered air vent (extractor fan). When I turned on the light, it seemed to break down, and has not been working since then. I want to try and fix the ...
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1answer
834 views

Should I use inline bathroom fans?

I'm building a new full bathroom in my basement and I also have an existing full bathroom without an exhaust fan. The sizes are 207 ft3 and 470 ft3 respectively. I was initially thinking of buying ...
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1answer
57 views

Bathroom fan/light wiring help

I have old switches at home for the fan and lights. In short, 2 switches to control fan and lights separately. Recently, I've been trying to add a timer switch which requires neutral and it doesn't ...
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1answer
1k views

This range fan drips water

I have this model range fan from NuTone. Condensation from steam (say when boiling water) forms on the underside of the unit and retaining bar that holds motor that drips back down onto the range. ...
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1answer
5k views

How to wire multi-control rocker switch

What's the correct way to wire a multi-control rocker switch (e.g. Leviton 1755) that has three switches on one yoke with a common supply? What wire(s) do I run from the switches to each of the loads?...
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2answers
9k views

How can I reduce the noise from a bathroom fan?

I would like to stop an extractor fan shaking my ceiling as it makes a lot of noise. What is the best way to dampen it? (foam, springs etc). Its an exhaust vent for bathroom and is inline with exhaust ...
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2answers
57 views

Any ideas how to replace bulb in this bathroom ceiling fan?

This is an old bathroom ceiling fan & light fixture. The bulb has gone out, now I cannot find away to open it and replace the bulb. There are no screws that I can see. I played around with glass ...
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2answers
74 views

Why does my bath fan turn off when light switch is on and vise versa?

I just put a new exhaust fan in the bathroom and connected it to existing light switch, which is connected to the bathroom light. When I turned the power back on, the bath light came on but not the ...
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1answer
37 views

How to re-purpose an exhaust fan using a 10x3.25 duct?

I'm currently remodeling my kitchen. Instead of a cooktop hood, I plan to re-use the existing ceiling exhaust fan. It looks to be about a 8" diameter fan that is inside a 10x3.25 duct that exhausts ...
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1answer
27 views

Replacing bathroom exhaust fan

Old fixture: combination fan and light New fixture: fan only New fixture wiring: 1 white, 1 black, 1 green Existing wiring: 1 white, 1 black, 1 bare copper, 1 red Wall switch: red & black ...
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2answers
2k views

What Type of Ducting Should Be Used for a Bathroom Exhaust Fan?

I'm planning on installing a Bathroom exhaust fan (Just a note, the port is 4") and am curious as to what kind of duct should be used. I've heard that the duct should be insulated to prevent water ...
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1answer
140 views

Downstairs exhaust fan venting into upstairs?

I recently purchased a bi-level home with two full baths. The inspection didn't include ductwork, but it seems to me that the downstairs bathroom is somehow venting into the rest of the house. There ...
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2answers
386 views

Help with bathroom timer and light switch install

I’m fairly new to doing my own electrical so be gentle if this is a simple question. I’m trying to install a fan button timer along with a new rocker switch for my bathroom. In the image below the ...