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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3
votes
1answer
620 views

Should I block off the soffit vents in the vicinity of my bathroom exhaust vent which is in the soffit?

I've seen the other threads on here warning against venting a bathroom fan to a soffit: People warn against the moist air heading right back up the surrounding soffit vents and into the attic ...
4
votes
1answer
333 views

What is this pipe called, and how does it work? (Round II)

OK, thanks for people's help on my last question, now I've confused myself again. I came across this picture, similar to the last question, but I don't think it's a cleanout. It looks like a vent to ...
3
votes
1answer
184 views

How much attic ventilation is needed?

My roof already had the ridge and soffit vents and gable vents. Does it need attic fans/rotary turbines as well? I heard that I should close off the gable vents to let the ridge and soffits do their ...
5
votes
2answers
1k views

What is this pipe called, and how does it work?

I recently saw a plumbing setup where a 2" pipe was run from a bend in the 4" toilet return. The 2" pipe bent upwards to meet the floor next to the toilet, where it was capped off with a removable ...
2
votes
3answers
147 views

Can I use a vent that was over an electric oven for a dryer instead?

I just bought an apartment built in 1980 and it does not have a washer and dryer. There is a vent above an electric oven. I am remodeling the kitchen and moving the oven to the other side of the ...
2
votes
1answer
126 views

How to install vinyl tubing for bathroom vent?

I need to replace the vinyl tubing that goes from my bathroom ceiling to the side of the house. It had a rip in it and I was successful in pulling it out. I went into the attic crawl space and ...
1
vote
3answers
325 views

Would a normal ethernet cable survive the conditions in an air conditioning vent? [duplicate]

I am currently renting a flat, which prevents me from making modification to the walls. However, I still would like to run ethernet cables between rooms. Between all the rooms, there are AC vents ...
0
votes
2answers
2k views

Is it better to leave the door open or run the fan while showering?

I want my bathroom door open while showering, and I don't want to have to turn on the fan. My husband wants the door closed and the fan on. Our bathroom seems to accumulate mold regardless of which ...
3
votes
1answer
145 views

How do I install a bathroom exhaust system?

We are set to close on our house in about three weeks and one of the problems that the inspector noted was that the vent in the guest bath vents into the attic (never going outside) and the master ...
1
vote
2answers
1k views

How do I locate a dryer exhaust vent?

I live in an older duplex. I just recently attempted to clean out the dryer vent/duct for the downstairs unit and failed because I could not find where my dryer vent is outside. Is it possible that my ...
4
votes
3answers
6k views

Why does it take my dryer 3 hours to dry a load of clothes?

I have a Maytag model LD69806AAE clothes dryer. Since our tenants in our town home have moved in July 2012. They have pointed out that the dryer takes about 3 hours to dry a load of clothes. The dryer ...
5
votes
1answer
428 views

Will combining roof venting systems cause short cycling?

I'm looking into buying a new house here in Wisconsin that has soffit vents, ridge vents and some additional static roof vents installed. However, when the home inspector came through he said that ...
3
votes
3answers
3k views

How can I insulate kitchen vent to prevent cold air blowing through all the time?

Building code requires my kitchen to have a 15cmx15cm vent (besides the kitchen cook-top vent). This vent is basically a hole in the wall that reaches to the outside. The vent has grating on both ...
1
vote
0answers
268 views

How can I unclog a passive bathroom air vent?

I live in a prewar apartment building. At the top of the shower, on the wall where the water comes in, is a passive vent. There is no powered fan that is installed and no nearby electrical wiring to ...
4
votes
1answer
277 views

Can I Use 4" CPVC Pipe for a Dryer vent?

Can I use 4" CPVC pipe to extend a dryer vent in my garage?
5
votes
1answer
2k views

Can I attach a kitchen vent and a dryer vent to the same exhaust?

I currently have a dryer attached to an exhaust vent with flexible tubing; this flexible tubing is in severe need of repair. That is (I hope) easy enough, and is not the crux of my question. The ...
7
votes
1answer
2k views

How much vent fan throughput do I need for my bathroom?

What minimum size (CFM) vent fan do I need per cubic foot of bathroom? Consider a bathroom that is 10ft. X 4ft. X 6ft(height). What is the minimum throughput rating for a vent fan? I want a vent fan ...
2
votes
1answer
319 views

How to remedy noisy air ducts?

I have forced air extraction with a duct running through one classroom then a second. The classroom which is ducted closer to the fan receives much greater air flow through its vents. To combat ...
12
votes
5answers
1k views

Is it dangerous to run electrical cords through heating vents?

I'm living in old apartment and my roommate has fed electric cords through heating vent from living room into bathroom. I see this as a double hazard and illegal. The heating vent exits on wall behind ...
2
votes
1answer
485 views

Is it possible to install flush mount floor vents in a laminate wood floor?

My laminate flooring doesn't come with floor vents so I may have to find some and stain them. I was told I need to get the drop in floor vents that sit above the flooring, but is there an easy way to ...
6
votes
5answers
6k views

Is it possible to use a dryer vent as a heat source in the winter?

Is it possible to attach a diverter to an electric clothes dryer vent so it can help heat my house in the winter? Seems like such a waste to blow it all outside. I imagine you'd need some sort of ...
5
votes
2answers
558 views

Can you have different types of vents on a single roof?

The attic of my house has serious ventilation issue and the sheathing becomes rotten. The roofing contractor suggests me to replace the rotten sheathing and install some ridge vent. His plan will ...
-1
votes
1answer
310 views

Why do I have a large PVC pipe venting warm air outside intermittently?

There is a large PVC pipe (3 actually) which vent air intermittently. I started noticing I could see steam rising over my deck in the morning and then I found that these pipes vent air at least a ...
1
vote
1answer
183 views

Should I tie into the ERV or just vent outside to increase bathroom ventilation?

Our bathroom currently only has an intake connected to the Energy recovery ventilation (ERV) to remove humidity, and it's completely inadequate even for a quick shower. Should I install an exhaust fan ...
0
votes
1answer
531 views

Can I install a (probably ductless) range hood against brick?

I'm thinking about making an offer on a 1930's house that needs a few improvements. The gas stove/range isn't situated against an exterior wall. Rather, it's placed against the back side of the brick ...
2
votes
1answer
1k views

How do I install a vent above a closet door?

I located some home theater gear in a closet directly behind our family room where the TV is located. Now the closet, a sizeable walk-in, is getting rather warm. How do I install a simple vent above ...
4
votes
2answers
2k views

Can I move the range hood but not the roof vent (angled “flue” pipe)?

I have a typical 30" stove installed in the center of a 20' wall with a standard overhead hood that looks a lot like this. I want to redesign my kitchen with new cabinets so the stove becomes ...
6
votes
4answers
4k views

Can I vent my dryer into the crawl space without creating mold and moisture problems?

We have a crawl space with a combination of sandy and clay soil in it. The crawl space is about 3' deep. To eliminate a long dryer vent run, I'd like to vent the dryer directly into the crawl space. ...
2
votes
3answers
680 views

Is it safe to use a former furnace flue to vent my dryer through the roof?

Our dryer is located in the center of our house. The current vent situation has tubing that makes several bends between the dryer and the crawl space before hitting metal duct that takes it about 25' ...
2
votes
3answers
3k views

Should I install an exhaust fan in a new garage?

I'm having a new garage built in my home and I'm wondering if it's a good idea to have some sort of ventilation/exhaust/fan system installed while they're at it? I'm thinking of doing some spray ...
2
votes
1answer
504 views

Is there any reason to not tape this vent over?

I just want to make sure this wont hurt anything. Right before I bought this house, it got a new AC and furnace but they did not replace much of the duct work. This vent is right above the AC unit ...
3
votes
3answers
5k views

Is installing a gable fan worth the investment?

We have 2 gable vents in our roof (approx 2' high or so), one at either end, and upon inspection it does not appear that there is really enough overhang in the roof for soffits. I still have to ...
1
vote
0answers
421 views

Is it possible to retrofit an external kitchen fan in an existing house?

I have a 2-storey half duplex that was built in 2008. The kitchen (1st floor) has a range hood fan that exhausts to the side of the house through 8" aluminum duct. The outside vent is not directly ...
1
vote
0answers
628 views

Is it advisible to block a bathroom vent due to cigarette?

I live in an apartment, and there's cigarette smell coming from the bathroom vent (probably from a neighbour who smokes). I'm wondering is it advisable to block the bathroom vent to block the smoke ...
4
votes
1answer
730 views

Can I use the white from one switch, but the black from another?

Some terminology, because I don't know any better: light-fixture - An existing, separate, light fixture...currently with dedicated 14/2 vent-unit - A new vent just installed, has three ...
1
vote
3answers
2k views

Can I clean my under-the-floor dryer vent?

Our laundry nook is smack in the middle of our house. The dryer vent goes into an interior wall, turns 90° downward, soon turns 90° back the way it came, and goes straight for four or five meters ...
2
votes
2answers
822 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 ...
5
votes
3answers
4k views

Do I need a rain\snow cover on this furnace vent?

Just bought a house that had a new furnace installed this summer. Vent number 1 in the image is for the furnace (2 is the water heater and 3 is sump). As you can see in the image, 2 and 3 both would ...
2
votes
2answers
2k views

What's the best way to shore up a ceiling register that is loose?

I have a few ceiling registers which are not flush with the ceiling since the duct has loosened over time. What's the best way to get them flush with the ceiling? I thought about driving several ...
2
votes
1answer
1k views

What can be done about this unattractive dryer vent?

The house I bought has dryer vent that runs from the dryer into the ceiling. Besides being an eyesore it is also loose/flimsy. I'm redoing the laundry room and would like to make this more ...
2
votes
1answer
373 views

Is it possible for wind driven rain to be forced into soffit vents? [duplicate]

Possible Duplicate: Can wind force rain into the soffits? Apologies if this question was asked before. I've recently noticed slight paint peeling in two ceiling locations, right next to ...
2
votes
1answer
926 views

Do I need soffit vents for my knee wall attic?

I purchased a 55 year old home that has no soffit vents. The attic space consists of a knee wall attic space and peak attic space. The peak attic space has vents at each end and a ridge vent at the ...
7
votes
1answer
2k views

How can I catch more lint in my dryer?

In the 3 story townhouse I'm currently in, the contractor originally built the (stackable) dryer vent to go straight up from it's location (top floor), then when it gets above the ceiling, it angles ...
5
votes
2answers
713 views

What kind of vent is pictured here and what are its uses?

While my roof was being replaced, I requested that they install two roof vents. One for laundry and one for bathroom fan. They installed two of these. I just tried connecting the bathroom fan to this ...
6
votes
1answer
3k views

How can I lengthen my vent stack and are there any negative effects in doing so?

I have observed that when we receive a lot of snow here in Ontario, at least one of the drain vents on my roof is covered by snow. While after one winter in the house I have not yet observed any ...
3
votes
2answers
472 views

Bathroom air vent drip

I have a constant drip coming from the air vent in my downstairs bathroom. After one week it has filled a bucket full of water. There has been no snow or rain in my area. The air conditioning hasn't ...
5
votes
1answer
8k views

How can I properly vent a basement toilet & shower using an AAV?

When we bought our house the plumbing drains for a basement bathroom were roughed in but they did not install any vent lines for them. We have the first floor plumbing draining into the main stack ...
9
votes
4answers
25k views

What is the purpose of a bathroom exhaust fan?

Okay I actually do understand the purpose of the bathroom fan; it gets the steam out of the bathroom after a super hot shower, right? Well turns out I NEVER turn it on. I suppose I don't shower in ...
1
vote
1answer
474 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. ...
3
votes
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 ...