Questions tagged [venting]

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How do I connect these two pieces of dryer duct in my attic?

I am about to install a Dryer by mounting it on the wall in an inverted fashion, and then venting it through an existing dryer vent setup that has been designed with a duct joint that goes into the ...
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1 answer
51 views

Help Identifying Vent Purpose

I'm trying to figure out what a vent on my roof is for. I have two vents close together. #2 in the photo is for the venting of the hot water heater. #1 is the one I'm not sure about. It has an ...
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Is a vented gas fire pit in a covered deck a bad idea?

We are building a home and desire to have a covered deck with a gas fire pit. Some websites say no problem, but when speaking with a dealer of gas fire pits, they were opposed to the idea because the ...
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Need way to Vent Heat out of Vaulted Ceiling in top floor Condo in Colorado

I live in a top floor condo with a vaulted ceiling. The high vertical wall of the vaulted ceiling backs onto an attic area accessed from outside the condo. There are NO vents and 2 poorly working ...
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Noisy kitchen vent fan

My kitchen vent is a 6" duct that curves to the side, goes to the outside wall, where a fan is mounted, pulling the air outside. Due to the curve (and the fan, I think), when I turn on the fan, ...
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Will this plumbing venting plan work?

Would this drain layout work for my basement bathroom in terms of sufficient venting and drainage? I have a dry vent available from above near the lavatory which I plan to use for venting the toilet ...
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2 votes
1 answer
163 views

How do I check bathroom plumbing vent?

I have an addition where the toilet clogs every few weeks. You can hear it coming a few flushes before the back up with a LOT of gurgling in the pipes. I "fix it" by running the shower, and ...
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1 vote
0 answers
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What does section 904.4 of the international plumbing code mean?

I'm trying to figure out where I'm supposed to install my main drain vent stack. I assumed it would be just above the toilet, but I'm confused by section 904.4 of the international plumbing code, ...
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1 answer
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What is the best way to vent the plumbing for a 1 sink/1 toilet bathroom in the basement?

I am currently finishing my basement, and we plan on putting in a small bathroom. When it comes to venting, I wasn't sure if I needed to run a pipe from the basement, up through the 1st floor wall, ...
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3 votes
1 answer
228 views

Will Air Admittance Valves help me? If so, where to place them?

This is my first question so apologies if its not the highest quality. will do better over time. My primary question is: based on the current plumbing layout, what problems am I likely to experience, ...
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1 answer
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Toilet intermittently won’t flush - strange seasonal venting issue maybe?

Backstory: last winter we had an issue where Toilet #2 of our 2 toilets (the one furthest from septic tank) would intermittently not flush. The tank would drain completely and refill properly, the ...
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2 answers
76 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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1 vote
1 answer
85 views

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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Should old openings in a plywood roof deck be closed before installing steel?

My metal roofer removed all 14 old vents and installed two new "Maximum ventilators" in its place. The remaining 12 holes are still there and not sealed and i can see the underside of the ...
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1 vote
1 answer
435 views

Is it safe to remove vent and cap off unused drain

I am in the process of renovating my kitchen and removed a wall. I discovered a closed off drain and a vent that goes through the ceiling. There does not appear to be anything else tied into the vent. ...
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1 answer
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Combining (dry) vents for fewer roof penetrations

I am remodeling and in the process need to move part of the vent stack. A simplified sketch of my existing plumbing situation across multiple floors is shown (pencil). I am proposing to eliminate vent ...
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1 answer
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Venting a portable a/c into another room that is closed off with the window open

I have a portable air conditioner in my bedroom, and I use it only at night when I am sleeping, and only maybe 10 nights a year. I hate to block up the window with the unwieldy vent hose set-up ...
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1 vote
0 answers
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Smell from laundry drain, possibly no vent?

Just purchased a home that was renovated. Appears to have not been by a professional, nothing major but small things. Not sure what to do on this one. There is a smell coming from the in wall drain....
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2 votes
2 answers
221 views

S Trap conversion - not enough room

I'm getting some gurgling from my kitchen sink which I think is due to this S trap. No ventilation. I want to convert to a P trap, and bring an AAV into the situation but with the current PVC layout ...
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3 votes
3 answers
2k views

Can I share a dryer vent with a portable A/C unit?

I want to add a portable A/C unit in our sun room which also houses our washer/dryer. Rather than vent the A/C thru a window I'd like to know if I could utilize the dryer venting by using a Y ...
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Do I really need a 1200 CFM Hood for a 48" Range?

We just purchased a 48" ZLine range with 7 burners. The information about all this CFM is very confusing. Do I really need a 1200 CFM hood?
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Why does my toilet still get air bubbles?

Bubbles = bad ventilation, right? I've got a 1st story toilet which has air bubbles on every flush. It does not bubble after/before and water is not siphoned out/in when other plumbing is used. I'm ...
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Understanding sink drains with S trap / no trap

This is an >100yo apartment in the northeast USA. I'm on the third floor/top floor, and the kitchen sink drain appears to have an extended S-trap going into the floor. The piping seems to be done ...
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7 votes
3 answers
410 views

How can I remove a stud to fit a range hood vent?

Our kitchen contractor screwed up and forgot to move a stud and plumbing in an exterior wall to accommodate a vented range hood. Cabinets and countertops are now installed. The photo shows what is ...
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3 votes
2 answers
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What prevents rain or snow from going down a concentric vent?

I am looking to possibly install concentric vents through the roof for two tankless water heaters I have. But I am concerned about rain coming back down the vent and damaging my water heaters. All ...
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1 answer
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Have you used a core drill on a foundation wall?

I'm looking to use a 4" core drill on a poured concrete foundation wall. The hole will be about 2" or so down from the top of the wall. The rental place has a handheld core drill with a ...
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0 votes
0 answers
522 views

Venting Dryer to Outside Through Foundation Wall OR Vent?

I'm relocating and replacing the ducting to vent my electric dryer that is located in the middle of my home. I'm using 4" galvanized duct, I've installed a Dryer Box on the back (2x6) wall of my ...
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4 votes
1 answer
170 views

Multiple concentric vent kits

I have two concentric vent kits I need to poke through the roof. One is for my furnace and the other for my tankless water heater. I want to place them near each other for aesthetic reasons, but I ...
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0 votes
2 answers
148 views

Is a condensing tankless heater that expels excess water outside also a dehumidifier?

I understand that a condensing tankless water heater will recycle that extra heat and only vent the heat that it cannot use; this is why they have a greater efficiency. But the water that condenses ...
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0 answers
32 views

Rearguard vent issue on Kenmore gas range

Vent in rearguard of gas range is outputting too much heat on top of stove; can we adjust this? it was changed when range was moved recently.
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-1 votes
2 answers
144 views

Venting a 96% furnace

I would like to use the existing exhaust ducting from a previous furnace to run the two pvc pipes for 96% furnace up through. I would cut the existing ducting in the attic to run the pvc out the roof. ...
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1 vote
2 answers
129 views

Lack of soffit vents with the use of ridge vents on a 1941 home

[Home is in Georgia] I made the mistake of installing ridge vents on my home last year without any soffit vents. I have since learned that doing so will actually cause the air to be drawn from all ...
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2 votes
3 answers
1k views

Need to move the dryer vent up by 3ft

I just bought a stacking washer/dryer machine and I need to relocate my floor dryer vent by 3ft above the floor so that I can push my machine all the way against the wall. This will give me about ...
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1 vote
2 answers
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Dryer Venting for 1984 Condo

We are in the process of buying a circa 1984 condo. The dryer is not presently vented to the outside, and I do not know if it ever was. It currently vents inside to a water-filled lint catch basin. I ...
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3 votes
1 answer
284 views

Does my new bathroom plumbing need a cleanout?

I am working on new plumbing for an addition we just built. Does anyone see any issues? Do I need a clean-out at the end of the run? I plan on using a 3" elbow in lieu of a combo to keep ...
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31 votes
6 answers
9k views

How do I fix this 30 ft (9 m) dryer vent abomination?

The previous owner left a bit of a headache with the dryer venting setup. Context: This is a gas dryer The living room is behind the right hand side wall, so that's a no-go as far as drilling The ...
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Will this work for a wet vent?

I am not sure if I properly understand the wet vent concept so here is the question. The current bathroom apparently has no dry venting. I am moving the sink from the point marked on the wall just ...
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1 answer
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Finishing attic with static vent

I have a 1920s building with a gable roof that has a 10' peak. I'm going to finish the space and had an engineer detail the specs for structural safety, but I'm stuck on the appropriate way to provide ...
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Venting a hot garage, how much cooler can it get with an exhaust fan?

I life in Miami and the garage gets very hot in the summer and I am trying to cool it down so I can workout in it. The basics are: I'm looking at this product: iLiving - 10" Wall Mounted Exhaust ...
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1 vote
1 answer
179 views

How can I insulate my porch floor?

I have a wooden screened-in porch on a cabin that I am remodeling, with approximately 30 inches from the ground to the bottom of the porch tongue-and-groove boards. I am considering insulating the ...
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1 vote
3 answers
1k views

Can insulation touch the roof sheathing in a sloped garage roof without soffit vents?

I am beginning to install fiberglass insulation in my garage and want know if I have done the ceiling wrong. The issue is that the insulation touches the roof sheathing in the sloped area below that I ...
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1 vote
0 answers
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can a bathroom or kitchen exhaust airt through a vent placed in the outter edge of the soffit and pointing down and out

Can a bathroom or kitchen range vent out through a vent-unit placed on the outter-edge of a soffit if it is pointing down and away from the house?
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0 votes
0 answers
220 views

How many twists and turns can a vent pipe take?

I'm replacing a bathtub in the basement and by the looks of it, its trap is not vented. I want to know if I can put a vent pipe in the location I've identified as most feasible and secondly, if it's ...
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0 votes
0 answers
111 views

Best way to install new vent pipe?

In my house, the kitchen is on one side of the house, and bathrooms on the other side. For some reason, the kitchen drains are not vented at all, but bathrooms are. I would like to vent the kitchen ...
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1 vote
0 answers
271 views

Using a single pipe off the main drain for a washer and utility sink, venting?

I am renovating my bathroom. I am using this as an opportunity to additionally: Move my washer and dryer from the mudroom, into the garage. Add a utility sink to the garage. The current plumbing ...
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2 votes
1 answer
558 views

When to vent new half bathroom plumbing

I am planning the install of a new half bathroom in an existing space in my home. There is currently one full bathroom, that is on the second story of the house. The soil/vent stack runs vertically ...
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2 votes
1 answer
5k views

Plumbing utility sink into washing machine with no vent

So I currently have a washing machine that has its hose running into a 2" standpipe that is coming out of my basement floor. A humidifier hose and AC hose also squeezes into that standpipe and it's ...
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2 votes
1 answer
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Bathroom Toilet + Shower Venting Fitting Question

Is this acceptable layout and appropriate fittings to use for the bathroom toilet on the left and shower on the right? Or would you replace any fitting and rearrange layout?
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1 vote
1 answer
84 views

Wet venting of added bathroom sketch -question is this layout OK?

I am adding a master bathroom shower, toilet and double vanity to an abutting wall of a full bathroom, Is this wet venting good if I tie into existing 2" shower vent in the shared wall?
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1 vote
4 answers
135 views

how to vent an electric dryer when outdoors isn't option

We have a building on the 3rd floor of a 4 floor building that we are building a loft in, It is in an historic area, we are in the middle of the block downtown. size 21'wide x 180'long, left and ...
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