For questions generally relating to the exhaust ventilation of air from inside the home, and/or methods to promote proper airflow thorough various spaces in a structure.

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1answer
525 views

How can I vent a range hood that's not on an exterior wall?

I want to vent a range hood out and it is not on an outside wall. I have already installed 12X3.5 duct into the attic through the cabinet and ceiling (visable). the 90 turn and wall cap are 10X3.5. ...
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2answers
787 views

What bathroom vents/ceiling/roof vents and fans are most recommended?

I need to vent a room in an uninsulated cabin - the ceiling is also the roof - so I don't need soffit tubing or anything like that. I am looking for a fairly cheap item that has a large cfm ability. ...
3
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1answer
1k views

How can I reduce whistling due to wind across a gas fireplace vent?

We have a gas fireplace venting through the roof of our attic bedroom; there's a cap on a chimney up there. Double-wall construction, such that it pulls combustion air in from outside. When the wind ...
8
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2answers
14k views

What are my options for venting a bathroom exhaust fan?

I would like to install a fan in our bathroom which currently has none. However, I'm very confused regarding the best approach for this. Above the bathroom is an attic space. I have read that ...
3
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1answer
637 views

How should I go about fixing a holey laundry room?

When I removed some old elevated cabinetry in my laundry room, I discovered two holes in the wall. The first I documented here, How do I close and seal an old external vent? and the second can be ...
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2answers
4k views

Do I need soffit vents when I have 2 gable vents and 5 normal peak vents?

We are in southeast Idaho, have a plain simple gable roof on a 1,050 square foot floor house; the roof's pitch is not great, probably 3 or 4/12 but normal for our area. We have 1 vent at each gable ...
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0answers
643 views

How do I ventilate a bathroom through a small window?

I've got a very small bathroom without a vent fan. Since it is in a condo among a lot of others in a large building, a standard vent fan cannot be installed. However, I do have a small window and was ...
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1answer
1k views

How can I modify this dryer vent cap to keep lint from getting trapped?

As mentioned in this question I installed this dryer vent cap on my roof As you can see, there is a gap between the flashing and the cap, presumably to let water out if it gets in. This is ...
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1answer
2k views

Moving my washer and dryer will mean I'll need to move my dryer exhaust vent. How should I go about this?

I live in a two-story condo/townhouse. My dryer is downstairs in the kitchen and I'd like to move it upstairs. Right now, the exhaust vent runs up through the wall and under the upstairs bedroom ...
5
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1answer
1k views

How can I vent this dryer?

I am installing a mini washer/dryer into a second story bathroom. I want it to be the safest and easiest installation that I can do myself. I understand the basics: minimum 4" diameter tube. Use ...
5
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2answers
2k views

Bathroom vent terminates to attic not outside.

Bathroom vents terminates to attic. The Inspector recommended that it terminates to the outside. What is the best way to do this. Should I just place the bathroom vent next to the roof vent opening. ...
4
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1answer
2k views

Attic ventilation - intake:exhaust ratio vs total ventilation area?

I have decided to go ahead and install a ridge vent in my house. The only current attic ventilation is soffit venting on one side of the house. As part of this project, I am attempting to determine ...
5
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2answers
6k views

HVAC vents - does wall or ceiling mount matter?

I'm going to add some crown moulding to some bedrooms. I've got HVAC vents mounted near the top of the wall and the moulding will cover part of the vent. I want to move the vents out of the way. I ...
8
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2answers
9k views

How do I install a sink in a room that doesn't have a drain vent?

I want to install a sink in my attached garage where there is no existing plumbing. I will be running new water supply and drain pipes to mains behind a nearby wall. I'm concerned I will need a ...
3
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1answer
668 views

Can I use a 1 1/2 vent for a toilet (3" drain) in CA (not a went vent, no other fixtures on it)?

Most of the info I have on code implies this would be OK, but one item I have says that a 1 1/2 vent can only serve 8 "non-WC" fixture units.
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2answers
1k views

Is the open grate in the ceiling between my garage and attic necessary?

I have a plastic grate in the ceiling of my garage that simply provides airflow between the garage and the attic. Due to the layout of my garage, my workbench is almost directly beneath this grate. ...
5
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2answers
4k views

Installing bathroom exhaust fan: what to do with vapour barrier and insulation?

I'm adding a bathroom exhaust fan, which is being mounted in the ceiling of the bathroom (in the attic) and venting out through a vent in the wall. right now, there is a vapour barrier (paper) ...
2
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1answer
320 views

Forced air heating air inlet in crawl space

The air inlet for my electric forced air heating is a small vent on the duct in the crawl space. Although the crawl space is sealed with a concrete floor and heated (ie insulation is around the ...
2
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1answer
391 views

How do I deciding whether to install an attic venting system?

I live in Colorado, and the weather is starting to warm up. In a couple months, the temperatures will rise pretty high. Thankfully, I have a well insulated house (there is over 20 inches of fiberglass ...
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2answers
5k views

How do I connect a dryer to a dryer vent?

I just moved my dryer (gas) a couple feet to a better location in the basement. It is actually now closer to the existing dryer vent to the outside of the house. The previous owner has it connected ...
7
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2answers
1k views

Is there any legitimate reason to have a direct vent between utility room and attic?

I've been doing some sealing and insulating in my attic, and discovered a purpose built vent directly from the utility room into the attic space. See most of these photos The house is in a ...
2
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3answers
7k views

Can I vent a microwave vent / range hood through wall?

I've got a Whirlpool over-the-range microwave that is currently venting back into the kitchen. I'd like to poke a hole through the wall and vent it directly outside. I've read the instructions and ...
3
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1answer
411 views

Bathroom Vent is tied to ceiling vent in adjacent room

I live in a bungalow with a bathroom on both levels. The bathrooms both have exhaust vents. Outside of each bathroom is a ceiling vent. The previous owner stuck towels in these to block them off. ...
7
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2answers
265 views

How to fit vents in a roof

The home we have just brought has no vents in its tiled roof; therefore it is getting a lot of condensation in the loft. So how do I fit vents? Do the vent you fix from the inside (rather than ...
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3answers
1k views

Can I close the garage vent on my furnace?

My furnace duct system has a vent in the garage, right over the furnace. Is it necessary for the proper operation of the furnace to keep that open? I'd hate to waste the money heating up my garage, ...
5
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2answers
3k views

What should I consider when cutting a dryer vent hole?

Our dryer has been taking forever to dry loads so, this morning, I disassembled the vent pipe and scrubbed out all the lint. However, before reassembling the vent, I had an idea. The current vent run ...
2
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2answers
4k 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 ...
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2answers
881 views

Can I vent a dryer from the same mechanical closet as a water heater.?

I'm currently looking at a condo to purchase and the existing "closet" that contains the plumbing and venting for a washer/dryer is a bit on the small side. It's probably not that big of a renovation ...
2
votes
1answer
177 views

What kind of screws for crawl space vents?

I'm removing one of the ancient crawl-space vents from my house in order to put in a wiring pass-thru plate. The old vent only had a couple screws on it and the new plate has a lot more holes... So, ...
4
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1answer
3k views

How do I add a quiet blower or fan to a gas fireplace?

I have beautiful fireplace in my family room, although it is gas rather than wood burning, and it vents strait outside. Due to the nature of how it is vented, I don't really get much heat from it, and ...