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 to insulate attic bathroom vent to prevent condensation

i bought a house in june and the bathroom fan start dripping water a few weeks ago (november). I looked at the inspection report and the picture shows that the vent duct through the roof isn't ...
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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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Safe to install humidifier above furnace gas vent?

I'd like to add an AprilAire 600 bypass humidifier. I plan to install the humidifier on the supply plenum, and the bypass duct on the return air. The gas vent coming off the furnace is type B. ...
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Moving or closing cold air return

Here is my current situation: There used to be a wall running between two rooms here; with a heat vent on the top side room and what looks like two cold air returns on the other. The issue is, with ...
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Loud buzzing from hydronic gas boiler

I have a 105K BTU Raypak radiator boiler, similar to this one but a slightly older model (I guess mine is about 15 years old). The boiler heats and pumps hot water to 8 radiators throughout the house. ...
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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 ...
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Replaced a Heat/Light/Vent with a vent only. There does not seem to be a hot wire:

The three gang box previously had a HLV combined switch plus a switch that operated a separate light. Stupidly, I removed and discarded the switches and units (light and HLV) without studying the ...
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2 answers
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Does my hood vent vent to the outside or not?

We moved into a new (to us) house, and neither we nor the inspector can figure out where the range hood vents! The stove and hood are against an exterior (brick) wall. There is a cabinet above the ...
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Squeaking round roof vent

My round roof vent fan is squeaking terribly who can I call to fix? That is the extent of the issue, there is nothing else to add.
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122 views

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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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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122 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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Desert Sand Blowing Into My Attic

We live in the high desert of Southern California and our home is positioned facing South and the prevailing winds blow from the West. Our gable vent faces West and over time the sand has blown into ...
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Old-style ceiling vent in DC rowhouse, top-floor bathroom

I'm looking to recreate the original mechanism for opening and closing the ceiling "window-frame" vent in the topfloor bathroom of my 1938 Wash DC rowhouse. Problem is, I have no friggin' idea what ...
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289 views

Stove Vent Hood Not Pulling Air

My stove vent is not pulling enough air but the exhaust on the outside of my house is flowing really good. The metal grease filters have been replaced (in fact with the grease filters removed it still ...
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Air brick in old Toronto home?

We have a house that was built in 1937 in Toronto. It is a double brick design. On one of the outside walls, I can see what appears to be a single-brick-sized vent and I don't know what its function ...
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Cooker hood venting close to eaves

I have had a new single story extension built to first fixtures; this includes a new kitchen area. Building Control (UK), will not sign off the extension until an extractor hood is fitted with ...
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Toilet Vent when no horizontal run

I am remodeling my own 67 year old house basement and putting in a full bath. The 4" waste line runs a few inches below the concrete floor and passes by the proposed toilet. Previously I replaced the ...
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Dryer vents and mice

We have been dealing with mice since the fall, eventually we got a pest control company and their recommendation after setting their baits for ~3weeks is to seal all the cracks and holes. One thing ...
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206 views

Wet vent question

I'm building a little apartment above my new garage and am hoping to wet vent everything like in the above crude picture. In case it's not clear: a kitchen sink and lav are at the top of the line, ...
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610 views

Toilets Burping and Gurgling

We always liked this toilet for it's strong and quick flush (American Standard Chamption, I believe, with a 4" flush valve), but now we consider it a problem especially seeing the water 'burping' up ...
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275 views

Is this drain setup adequately vented?

Pictures are coming after I find new batteries for my mouse. My basement has two vertical drain pipes. Drain pipe number one comes down directly from my bathroom sink. Near the basement ceiling, a ...
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3k views

Bathroom exhaust fan through clay tile roof

I've installed an exhaust fan in an upstairs bathroom and need to vent it through the clay tile roof. (pic attached) The standard 4" pipe jacks and flashings I'm finding at Home Depot don't seem to ...
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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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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 ...
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579 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 ...
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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 ...
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279 views

Can a horizontally-vented kitchen exhaust have a downward-facing outlet in a soffit?

Can I vent a kitchen exhaust fan horizontally to an exterior soffit, ending with a downward outlet/cap? (Or must the outlet be horizontal (through a wall) or upwards (through a roof)?
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Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does?

Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does? See links below for more info on pumps Hartell Pump Little Giant I am having a hard time ...
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1 vote
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1k views

How to best connect this microwave to the exhaust vent?

I'm trying to connect my microwave to the existing exhaust vent. The problem is that the microwave is about 1 inch to the left of the actual vent. This is the part that I'm struggling with. I have ...
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207 views

Can a cheater vent be installed in a vanity drain that maybe running into a roof vented drain?

Can a "cheater vent" be installed in a vanity drain that MAY be running into a roof vented drain? All p-trap , tail piece is new and drain line has been cleaned with a drum auger netting no major ...
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1 vote
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1k views

gas fireplace smells

I bought a house that was vacant for a year and a half. It has a gas fireplace. The plumber that fixed the heating unit supposedly looked at the fireplace too and lit the pilot for me. I lit the ...
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Can I extend attic vents so they don't get blocked by snow?

I have 2 square low profile attic vents on the detached garage but I'm pretty sure they are blocked with snow during the winter. If I should alter them, are there extensions available to raise these ...
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How can I tell if my bathroom ceiling vent is working properly?

Seems to take the vent forever to clear shower vapor from room. I purchased a vent that had a good rating. It is vented to the outside. How do I know if it is working properly and actually venting to ...
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1 vote
1 answer
742 views

Dryer vent hose not staying connected to the dryer vent even with clamp

I cannot get the hose to stay on the metal vent coming out of the dryer. I have tightened the clamp til I am almost bending the pipe but the venting material slides right off? Help and thank you!
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Sealing exterior vent

What is the correct way to seal an unused exterior vent without replacing siding etc? This is an old, 4'' dryer vent. My current plan would be to first caulk around the flap to close any air gaps and ...
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0 votes
1 answer
34 views

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
138 views

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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0 votes
1 answer
61 views

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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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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59 views

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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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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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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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
101 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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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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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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38 views

How can I install my dryer exhaust - Should I contact the builder?

I am trying to install my new LG dryer exhaust in a new build home and the part attached to the wall just fell off. Should I contact the builder? I have done this before and it was not as complicated. ...
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18 views

In a tight spot with Venting a bar sink in basement

We're adding a bar sink into the basement of our house while we are finishing it. The location is at a place where we can attach to the drain just fine. The issue I am running into is that I am not ...
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