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
31 views

To much attic exhaust venting? Help check my math

So I just had my roof done and wanted ridge vents. The roofer used VentSure® 4-Foot Strip Heat & Moisture Ridge Vents. I am trying however to check my math on my balance, and thing I have way to ...
3
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2answers
88 views
+50

Is it OK to have an air conditioning vent above a kitchen cabinet?

We're getting proposals to add central air conditioning to our house. We currently have no ductwork so adding ducts and vents is part of the project. One possible duct location is on the ceiling over ...
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0answers
9 views

Prevent cold air from coming in through bathroom vent

I am considering building a vent with a fan in my upstairs bathroom that would exit out of the roof. Since the bathroom is in the center of the house it cannot easily be vented to the side of the ...
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2answers
40 views

Rain coming in bathroom fan vent [closed]

I just moved into a house and during the first rain we had a leak coming from the bathroom vent. The vent had been broken off above the roof, but was repaired before us moving in. What problems ...
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1answer
67 views

Is there a proper way to vent a garage into an attic?

So, I'm looking to install a set of vents in my garage door for the summer months. I insulated it last winter without realizing how hit it would get with two hot cars in it! Not to mention it really ...
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1answer
24 views

Reconnecting Rigid Dryer Vent Line

I was doing my annual dryer maintenance, when I noticed that the main dryer vent line has fallen off. Looking to reconnect without putting a large hole in the floor. In detail: We have second story ...
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0answers
16 views

Reducing AC vent/diffuser

I want to add some smart vents to my home control system. The thing is, the largest size that they come is 12x6, and my current ceiling vent/diffuser is 12x12. I would prefer not to have to go into ...
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1answer
53 views

How to prevent birds from entering a dryer vent?

Both of my neighbors have had issues with birds nesting in the vents in each of their houses. Securing the bathroom exhaust vents against birds seems straightforward to me: simply replace the vent ...
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2answers
61 views

Bathroom ceiling vent has a fan cover, and a duct behind it but no wiring. What does that do?

I'm in the UK. I believe this house was built in the late 90's. The bathroom (and toilet) both have ceiling fan vents with a plastic guard covering the vent. When I removed the guard to replace the ...
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1answer
65 views

How to prevent moisture problems in newly-sealed crawlspace from the 1800's

I'm renovating a Virginia home from the mid-1800's. The house is balloon frame construction, sitting on top of maybe four layers of brick, sitting directly on top of the dirt. In the past, the ...
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0answers
26 views

What to do about gap under outside bath exhaust vent?

The exhaust vent was broken so I installed a new one. After I finished, the previous homeowner apparently cut the siding too tall, or my new vent is shorter, but I'm left with this raggedy gap at the ...
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3answers
60 views

Can I unplug attic fan over garage

I recently moved into a new house and during the inspection, the inspector noted that there was a fan in the attic space above the garage. He also mentioned that I could probably just unplug it ...
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2answers
96 views

Vent AV closet into attic

I have a small closet (4x6) that I use to house my AV equipment (receiver/consoles/etc). This works great, but as the closet is in an upstairs room it gets quite warm in the summer. I would like to ...
2
votes
1answer
53 views

Ridge vent conversion creating heat problem

I have a classic 1964 rambler. I recently had a new roof put on and additional insulation blown in to bring the R factor to 40. The contractor recommend replacing the original venting with ridge vent. ...
2
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0answers
40 views

Dryer booster installation forthcoming, any tips or warnings?

Background: As the title says, I'm about to (within the next week or 2) install a dryer booster for a new (to my friend, not newly built) house. The dryer vent goes through a couple bends behind the ...
2
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3answers
88 views

Can a bathroom fan be exhausted through existing gable vent?

My bathroom exhaust fan recently broke. When I went to replace it, I noticed that it wasn't being exhausted from the attic. I was about to make a separate hole in the nearest gable to exhaust the ...
2
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1answer
52 views

Installing a wall vent when stud blocks the opening?

I'm installing a rear duct range hood and need to open a ~4"x18" hole through the exterior wall. A 2x6 stud blocks the hole. I plan to cut the stud and place a header, jack studs, and sill around ...
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0answers
44 views

Move a secondary drain vent stack?

I'm in the midst of a kitchen reno and removal of a wall between the living room and kitchen. I came across what looks to be a secondary vent pipe that does not penetrate my roof, but does go to the ...
2
votes
3answers
62 views

Properly Venting a Dryer

BACKGROUND INFO: We have an upstairs laundry room with the dryer vented directly into the attic space! House was built in '84, maybe had three previous owners before us. Not sure what the code was ...
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3answers
198 views

Reducing humidity with a fan: top or bottom?

In the basement of my apartment block we have several little storage rooms (~65 sq ft), one for each tenant. Inside of mine the humidity gets a little high to my liking because although it has 2 holes ...
2
votes
1answer
44 views

Fanning outside air into basement apartment

I am refinishing my basement into a 1BR apartment and I happen to have an easy access to intake outside fresh air and fan it into the apartment. I was planning to have one of those standing AC units ...
0
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2answers
36 views

Drilling under a vent

I'm about to drill through dry wall to place in screws to hang a coat rack on. I noticed that there is a vent directly up on one of the places I have to drill on (picture shown and drill area marked w/...
3
votes
1answer
136 views

Backwater valves, furnace drains, and vent pipes

I'm having a house built and I got a picture of the drain pipes in the basement prior to pouring the slab, and it looks like this: The left blue circle is a floor drain for the furnace, the right ...
3
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2answers
111 views

Is this flue dangerous?

I had access to a ladder the other day, so naturally I was poking around in the attic of our house where we have lived for about a year. Above the closet where the furnace and water heater are located,...
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2answers
101 views

Extending plumbing vent horizontally

I am planning to finish the basement and have some questions regarding the plumbing. The builder already have the bathroom rough in but the location is at middle of the basement. I want to have the ...
2
votes
1answer
38 views

Venting by gas meter

We're looking at installing a natural gas tankless water heater, but the vent option with it (that would be easiest to install through our solid poured walls) would come out about a foot away from the ...
2
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0answers
87 views

Can I use flex duct for a range hood exhaust? [duplicate]

I am replacing an old range hood with a hood/microwave/convection oven. The vent from the old hood does not line up with the vent position on the new unit. I know how to remove the old vent and patch ...
0
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1answer
46 views

close an old hood vent

We are in the process is renovating our kitchen. One of the things we are doing is installing a more modern range hood instead of the older under cabinet hood. The new hood requires us to create a new ...
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2answers
372 views

Plumbing issue throughout house - gurgling coming from shower, bubbling in toilet, standing water in drain of shower

Update below: Main line snaked For reference, images of the drain. I'm going through the whole story in case any details might make a difference in prognosis. If you aren't interested in the ...
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2answers
234 views

What is this green pipe with an open end sticking out of the ground?

I'm looking at an REO property, and I cam across something and have no idea what it is. it appears to be a green pipe pipe in the ground that is open on top. It's on the side of the house, and there ...
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0answers
28 views

Return Air Vent

I am in the middle of planning a kitchen remodel. We are removing a non load bearing wall to open up the space. The wall has a big return air vent (using the studs of the wall). My initial thought is ...
0
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1answer
113 views

Why is the vent pipe in the basement and not the roof?

Apologies if this is the wrong forum to post this question. Our house has a vent pipe in the basement coming off the main stack (water line going to sewer). I understand there is a pressure ...
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0answers
33 views

Backdraft issue w/bathroom exhaust and dryer connected to same air outlet

I live in a condo where a dryer and bathroom exhaust both connect into a Y connector that flows into the same pipe and into the building air shaft. I understand that these two appliances on the same ...
0
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2answers
66 views

Why is my booster fan pulling cold air from outside?

This is my first winter in a house with an oil-heated, forced air system. I noticed my wall vents were pushing out warm air, but the floor cold air return vents were pushing out cool air. I followed ...
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0answers
21 views

3“ radon vent 4” roof jack

I have installed a 4" oatley vent flashing and drilled holes in roof and walls with a 4-1/8 bit. Unfortunately the radon coupler out of the concrete is only 3". This was a plumbing mistake and long ...
0
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4answers
2k views

HVAC supply vent noise: how to eliminate the whistling wind tunnel?

Every time the heat turns on (rented house), we are getting choked with too much dry hot air in our small room. When I try to close the supply vent it produces a really loud whistling noise. I either ...
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0answers
22 views

dryer vent . venting into the crawl space [duplicate]

Just bought a house no basement have a crawl space the dryer vent discharges into the crawl space . The furnace is also near by. ? Good or bad .
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1answer
45 views

Can I close my gable vents now that I have one solar fan?

I have an 84 yo Tudor style home in Hawaii that looked fantastic when we first bought it. Living area is 2500 sq ft. It's quite unusual to find such homes because many don't survive the termites. ...
4
votes
2answers
226 views

How do I handle baffles at the corners on a hip roof?

What do the energy pros do here in the corner of a hip roof? I don't have enough room to install a baffle. I want to install insulation here, so I'm not sure if I would run into problems with moisture ...
2
votes
3answers
531 views

Best way to make a hole in concrete wall

So my house has concrete walls and ceilings. There a few places i would need to remove some large holes like for vents or light fixtures. I was looking at a concrete hole saw which seems to be a good ...
1
vote
1answer
73 views

How to vent a 2nd clothes dryer?

Bought a new washer+dryer. Old washer+dryer are still working fine, so I figured I will keep the old dryer and just dispose of the old top load washer (the new one is a nice front load). They're both ...
0
votes
1answer
411 views

How to install dryer ducting inside existing wall?

I'm thinking about installing a recessed dryer box like this. http://www.homedepot.com/p/Dundas-Jafine-Recessed-Dryer-Vent-Box-DRB4XZW/202449693 Apparently with 4" studs you have to compress the ...
0
votes
1answer
46 views

Can I vent room air to the outside?

The building interior gets hot during the day and stays hot during the evening when it is much cooler outside. It would be a really great option to simply vent the hot air outside instead of having to ...
1
vote
1answer
341 views

How to hang a dryer vent in a basement ceiling?

I have an old house and had to rerun the dryer vent line from the first floor through the basement and then to the outside of the house. I basically replaced everything the previous owner did with ...
4
votes
4answers
546 views

Bathroom vent through existing roof vent

I have a roof with two gable vents as well as slanted vents that look a lot like these one: I do not want to install an extra vent specifically for bathroom so I was wondering if I could use one of ...
0
votes
1answer
110 views

Can the back side of a window type aircon exhaust in an empty ceiling area?

I'm planning use a window type A/C on my little attic room. My A/C unit is just .5 HP, just enough for the small room. The problem is there's no proper exhaust area like the standard Window type. ...
0
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1answer
118 views

What is this 6" vent coming out of the main furnace trunk going under my deck for?

I have a 6 inch round duct that comes out of the main trunk about 5 feet from the furnace. It runs through the basement and outside the house (under the deck). What is this? The furnace also has 2" ...
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3answers
556 views

Bathroom fan with no outside vent

What's the purpose of a bathroom fan with no outside venting? One of my bathrooms is set up this way. I'm about to redo the ceiling, and I'd like to replace the fan unit with something better looking, ...
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1answer
745 views

How hot should my hot water heater vent get?

My gas hot water heater's flue/vent is very hot to the touch. Is that normal? How hot should it get?
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0answers
91 views

possible to have too much soffit intake venting for roof/attic?

Is it possible to have too much soffit intake? Currently my simple gable roof on a ranch home has 8 RVO38 vents but NO soffit intake vents (terrible!). Of course the attic space runs incredibly hot ...