Questions tagged [vent]

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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How High For A Condensate Standpipe?

I have a new Navien NPE-240A2 condensing tankless water heater that I'm installing in an existing small water heater cabinet accessible from the exterior of my house. The current tankless is an older ...
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2 answers
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Dryer vent is too close to the ground. Can I extended it outdoors?

My dryer vent is installed only a few inches above grade, as shown in this image. I'd like to fix the grading around the house but I can't raise the grade here because of the vent. Short of rerouting ...
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Do old vents need to be removed if ridge vent is installed?

With a new ridge vent installed, I am wondering if these old vents need to be removed? They're plastic covers over a square hole cut in to the attic plywood. Just curious if it will interfere with ...
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Bathroom vent is noisy when it's windy outside

The vent fans in our bathrooms make loud clapping noises when it's windy. I can open/close the doors to the bathroom quickly and hear the flap clapping because of the pressure change. Is this ...
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4 answers
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How to re-route range hood ducting to my vent?

My current range vent does a wonky turn around and prevents the cabinet door from closing fully. I'm trying to figure out an alternate way to make the connection, but don't really have any good ideas. ...
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3 votes
3 answers
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Trying to replace bathroom vent, but housing is stapled to the rafter

I have a Broan 688 vent in my bathroom. It's incredibly loud, and it doesn't have a light. I bought a Revent replacement from home depot, which is designed to fit the exact cutout as the Broan. ...
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9 votes
2 answers
2k views

Using old vent pipe as TV antenna

I recently replaced a house trap, and as a result, I have a leftover vent pipe that runs from my basement up through my roof. Would it be possible for me to somehow connect a coax cable to the pipe so ...
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1 answer
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Have I gotten too creative with my attic insulation vs airflow design?

I did a lot of research on air flow and insulation at the beginning of this project, but I started to get into a flow and got a bit creative with foam-board sealed ridge air pocket. My basic design is ...
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Any concerns with moving a plumbing vent?

We are currently in the process of evaluating placing solar panels on our roof. The south facing roof with best sunlight currently has a plumbing vent that would be nice to move if possible. My plan ...
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3 votes
1 answer
87 views

Does the steam function on a dryer produce more humidity than a normal dry cycle?

Just moved in to my new condo and bought my first steam dryer only to realize that the condo syndicate prohibits us to use the steam function on our dryers because of a problem in the construction of ...
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Will this roof vent installation cause me problems?

I just have my house re-roofed on last November. Recently I look around in the attic and found the new vents and ventilation fan weren't prefect fit the existing holes. Will this situation be a big ...
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2 votes
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What is this junction box mounted to a metal pipe? [closed]

I was alerted by some vibrating noise in my basement and opened a little access hatch to learn more. I saw a metal box with electric wires in it. This box is screwed in a larger pipe, which seems to ...
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Whirlpool Dishwasher leaks from the air vent

My Whirlpool Dishwasher WDF520PADM7 (2019) has the a passive style air vent on the upper left corner of the door (passive means there is no solenoid or fan). Water leaks from air vent assembly through ...
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1 vote
1 answer
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Need Options for Routing Dryer Vent

I have a single story brick house built in 1992 on a slab with the current dryer vent being a 3 inch pvc running thru the slab under a tiny room (garage accessible) that contains my 50 gallon gas hot ...
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3 answers
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Is an air admittance valve suitable on a sewage ejector pump basin?

My contractor recently installed a sewage ejector pump for a new basement bathroom that will feed waste to a septic tank. The pump will be handling a toilet, shower, and two sinks. I have some ...
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Why vent on first floor blows cold air mostly and hot air sometimes?

My house has 3 floors and gas furnace is on 3rd floor. First floor has total of 3 vents but one of those blows cold air most of the time and hot air rarely. The other 2 vents on the same floor blows ...
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Would this work for venting a basement toilet?

I am putting a bathroom in my basement, but I am not sure about venting. I know studor vents are a possibility, but I would like to just tie into my existing system if possible. Here is a rough sketch ...
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Water dripping from a gas vent thats connected to my furnace

I just noticed when I opened the closet where my furnace is located there was water in the middle. It appears to be leaking from 2 spots on a vent that's labeled the (gas vent connector) its sunday ...
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100 views

What material blocks cigarette smoke the smell and the vocs from passing through vents?

I tried blocking the weed/cigarette smoke from neighbors apartment from getting into mine. I've done everything from wrapping kitchen and bathroom vents in aluminium foil, packed and sealed off whole ...
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1 vote
1 answer
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Lower the point of drain attachment to a vent and adding a Studor (AAV)

I have a negative pitch in the drain pipe coming out of my sink drain that attaches directly to the vent stack. The vent stack is mostly inaccessible at the height of the p-trap though inside the sink ...
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0 answers
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Advice installing a vent on roof

Installed a new bathroom fan today and realized the ducting is way undersized. 9'x15' room and a very tiny fan with 3" ducting. I replaced it with a 110CFM Panasonic fan. So I can't use the ...
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How can I limit the flow of cold air in my utility room? [duplicate]

I could not understand why my basement was constantly cold. I found by accident a cold blast of air coming through this vent from outside. Since this is in my utility room, next to my home forced air/...
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1 vote
1 answer
92 views

Dryer vent venting towards side of house

The under-eave dryer vent on my new house is pointed back towards the side of the house (instead of straight down, away from the house, or to one side). As a result, warm moist air is blasted at the ...
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1 answer
52 views

Screwing in to an HVAC vent

I'm trying to mount a sliding barn door in a room. It has five holes in the rail for the lag screws to screw in to. One of the five holes is directly over an HVAC vent that leads to the upper floor - ...
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Installing a vent grill when the floor is finished

Is it possible to install an HVAC vent grill in the finish floor? This is in the attic space under a sloped roof, where the floor doesn't run all the way to the roof, so we actually have access to the ...
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Chimney draft and air flow measure

How can I get a reasonably accurate picture of the functional fitness state of my chimney vent pipe? E.g. can I somehow measure the draft and air flow on two ends to make sure it flows smoothly, ...
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2 votes
2 answers
543 views

Why don't people install cold air return vents into wood stove surrounds?

I've been researching how to help my woodstove better heat my house, so that warm air from the stove (on one side of the house) moves throughout the house to other rooms, heating it more evenly (vs ...
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2 votes
1 answer
350 views

How does blocked vent switch work?

A blocked vent switch is a device mounted to a burner vent hood that includes a sensor detecting that the vent is blocked, then switched the gas supply off if tripped. My question is, how does this ...
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6 votes
3 answers
1k views

Baseboard diffuser is twice length of the vent

Recently purchased a home built in the 1960s. We have baseboard diffusers in 3 bedrooms that are getting carpet installed this week. The diffusers are old and big and I was looking to replace them. ...
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Kitchen sink clogged

Sink is clogged. Took out air admittance valve and it works fine. Added new one and it clogged again. Outside there's not clog. I don't know what else to do
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2 answers
98 views

Boiler flue adapting to chimney vent pipe

I bought a used hydronic boiler at an antique shop to replace my old one. It came with a flue that reduces from 6" at the appliance box to 5" after a draft hood and a vent damper. My ...
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3 votes
1 answer
158 views

Why are there exterior vents to empty wall cavities beneath a large window on my late 1950's ranch?

I have two vents below a large picture window on my late 1950's single-story ranch with a basement (full-ceiling height) and cinderblock foundation: The holes do not go anywhere and I am having ...
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2 answers
77 views

what kind of outdoor vent (for furnace) is this?

This is a vent for a home-heating furnace (blown-air, gas-heated). There was some kind of plastic meshing on the outside. It's broken. Now I have to go very high up and fix this somehow. A scary ...
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2 votes
1 answer
62 views

Can I cap this bow vent?

I am removing a kitchen from a basement which had an island sink. I will be leaving only the sink along the wall which has its own vent. Can I just cut both legs of the bow vent and cap it flush with ...
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2 answers
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Steam in bathroom

My bathroom originally vented into the attic instead of outside. I didn't have too much steam with this. A 3 inch vent was put on and exhausted out through the soffit. It wasn't effective. A new fan ...
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-1 votes
1 answer
102 views

Best vent size for replacing drop-ceiling register with boot for drywall using 8" duct?

I'm replacing my drop-ceiling with drywall in a basement room. Right now there is one register on an 8" duct – the kind where the duct is just open and passes through a perforated 2'x2' grille ...
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1 vote
4 answers
94 views

Foundation vent grates

2 part question here. My house has these vents in the foundation: There are several of these around the house. They're about 18"x10". I want to block them off so mice and small animals can'...
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1 answer
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Dust buildup and vent airflow - Should my vents be completely open?

The room that I am in is particularly dusty compared to all the other rooms since I'm in it most of the time and it's very small with lots of stuff inside. I do my best to dust every surface but it ...
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3 votes
1 answer
120 views

Covered vent under carpet

I got carpet installed from Lowe's. The installers have covered the ac vents and return air vents in some areas. I have called them to fix it but I am not sure how can they do it and if they will find ...
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2 answers
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What could this tube sticking out of the roof be ? It was directly over the old ac system

We moved into this mobile home with a very old ac unit and we had a new one installed. The people who installed the new one said there was a hole and they weren’t sure what it lead to so they just ...
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1 vote
1 answer
105 views

Can a sewer vent pipe be rerouted?

We are adding a new shower and want to extend it by a few inches. But behind it is a sewer vent that has a bump out framed around it. It is on exterior wall and the roof is directly above it. Can it ...
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2 answers
77 views

Is it beneficial to have a gable attic fan even though it's not attached to an external vent?

The gable vents/shutters are in an area of the attic that's not easily accessible for me. Ideally that's where the attic fan would go. Is there a benefit for me to still run a powered attic fan as ...
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1 vote
1 answer
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My dryer isn't fully exhausting to the outside?

I recently bought a townhouse which has laundry in the finished basement. I noticed that our clothes took a bit more than an hour to dry in the dryer, so I wondered if there were any lint blockages. I ...
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2 votes
1 answer
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Seeking suggestions for working around a crawl space vent when building a deck

Our home is a 1950s split level in IL. Our split level deck's step is shorter than code, everyone trips on it, and the homeowner is legally blind. We need to level the deck for safety. Raising the ...
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3 votes
1 answer
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Is this dryer vent installed correctly?

Should I add those vent straps? It seems pretty sturdy, but I want to be certain. Is it even in a good location on the wall? Everyone I spoke with said it looks fine, but still a little strange to me ...
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1920's Home Attic Insulation Options for warmer summer months (SF Bay Area)

I'm currently trying to install a whole house fan in our 1000sf 1920s home in Oakland, CA. The weather is temperate and Oakland gets 3-4 weeks a year of heat that's 80deg-100deg. With our old house, ...
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6 votes
3 answers
2k views

Dryer vent coming up out of the ground

We recently moved into a house and hooked up a new (LG) washer and dryer. The dryer was showing us an error message related to decreased performance due to poor venting exhaust. I went outside to see ...
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Is 4in pipe OK for range hood with 7in vent?

We bought a 350 CFM range hood with a 7in vent. Our installer ran a 4in diameter flexible aluminum foil air duct horizontally through the floor joists to outside. We are now told the 4in pipe is too ...
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-1 votes
2 answers
121 views

Can I install an AAV on a main house vent in my attic?

I have a small camp house in upstate NY on a septic system. The main plumbing vent presently opens into our vented attic space. The attic has ridge and soffit vents, plus two approx 2sq ft vents one ...
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2 votes
2 answers
429 views

Best way to repair the crawl space vent

So I had a few questions as far as stucco vents go. Here is an image of what we are talking about: What would be the best way to repair this hole? Just some wire mesh over it? Some follow on ...
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