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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
46 views

Do I need to sanitize my air vents after I remove a bird from them?

I am quite positive I have a bird in my air vents. I plan to remove it tonight but I'm not sure what I should do afterwards. Should I have a company sanitize the vents/system? I just don't want any ...
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0answers
39 views

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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1answer
78 views

How to make a 8 inch hole through a brick wall for venting

I am planning on Installing a Vent hood the manufacturer recommends 8 inch duct work. I am looking for options to make this hole. 1) Diamond hole saw. I couldn't find a diamond hole saw in 8 inch. ...
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2answers
63 views

Are there any options for connecting into main stack for venting branch below waterline?

Are there any options for connecting into main stack for venting branch below waterline? Could I go up for a few feet with a with a wye join and then come back down? The reason for trying to come up ...
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2answers
53 views

Are air vents in a house intended to let some air through when they're closed? Would it be bad to completely seal it?

I would like to be able to use the vents in my house in a way that targets specific rooms/areas more than others. Sometimes I want to completely close off a room from being temperature-regulated by ...
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0answers
22 views

Hood vent duct in floor - sealing it

I have an 8" duct that comes up through the kitchen floor (runs in subfloor between basement and 1st floor and vents outside) and through a kitchen cabinet bottom that will house a pop up vent. I can'...
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1answer
29 views

Connecting a vent fan

I have a new vent fan, but no instructions. The old van had a light and fan, and I have two wall switches for it. The new fan has a light and fan as well. In my ceiling I have a black, white, red, ...
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1answer
49 views

constructing mechanical chase

I'm thinking about putting a mechanical chase in my home to connect the roof to the garage. The chase would contain the flue for water heater and furnace, and possibly a dryer vent (separate from ...
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1answer
86 views

What is this round roof vent fan called and how does it work?

The following round fan is installed in a residential roof in a house in Pennsylvania. The roof also has soffit and ridge vents. The round part of the fan spins, but it is unpowered (by electricity)....
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2answers
40 views

Incandescent Equivalent for Bathroom Fan/Light

We are looking at lights/fans for the bathroom. We don't want to spend a lot of money. The fan/light combination units at Menards and Depot say to use incandescent or energy-efficient equivalent. The ...
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0answers
81 views

How do I remove the cover from a square drop ceiling diffuser?

How do I remove the cover from a this square drop ceiling diffuser to adjust the diffuser?
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0answers
41 views

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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0answers
24 views

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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1answer
93 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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1answer
29 views

Can I use foil duct for Kenmore 700 dryer?

I pulled my dryer, and am reinstalling it. It had a semi-rigid metal transition duct, which was all bent out of shape, and looked like it had some holes forming (see pic). I did homework, and read a ...
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1answer
84 views

Ideas for covering vents to stop pests getting in?

We have a crawl space under our house and the wire mesh covering the vents is shredded. I want to keep the animals out and would like some ideas on the best way to do it. I was planning to replace ...
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5answers
2k views

Dryer venting problem

I own a home built in 2003. The laundry room is in the middle of the house, but also adjacent to the garage, I live in Florida. The dryer venting system is close to the floor, turns, 90 degrees, ...
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0answers
43 views

Do I need a wall thimble for thermal separation with a category III venting appliance?

I bought a tankless water heater that allows me to vent using category III. I've seen that wall thimbles are included in many category III termination kits, but am wondering if they are really ...
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3answers
290 views

Connect 4“ Dryer Vent Duct to 4” Exhaust Pipe

I just had a new dryer installed. The installer said I needed to buy a pipe reducer because the dryer vent duct and the exhaust pipe are both 4". He cut some holes in the dryer vent duct to fan it ...
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2answers
414 views

Are insulation baffles necessary if the side attic has roof vents?

I am doing some remodel work in my finished attic. I've removed some drywall and have temporary access to the side attics. I'm concerned about the insulation and would like to fix any problems now ...
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2answers
27 views

What to look out for when installing a gable attic vent?

My attic needs better ventilation. On one end of the attic it terminates to a room that has a cathedral ceiling, and the other end of the attic terminates at an exterior wall (the main gable). It is ...
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1answer
96 views

Trying to understand the venting in my home

I'm trying to make assumptions on the purposes of the vents in my home and I understand that it may not be correct without opening up walls. It would be a great help for me in knowing how my home ...
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1answer
23 views

Can I run a 8 inch vent for a downdraft range fan in the same trench as my sewer line?

Can I run my 8 inch duct for my down draft range fan in the same trench as my sewer line?
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2answers
896 views

How many soffit vents do I need?

Quick question regarding venting of my attic. I have two gable vents and a ridge vent, but home inspection recommends soffit vents be installed. I've calculated how many soffit vents needed, without ...
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1answer
106 views

Connecting dryer to dryer vent

In all the youtube videos I see, dryers are connected to dryer vents via flexible hose. One end is clamped to the dryer and the other is attached to a plug that fits into the vent I bought a vent kit ...
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1answer
17 views

Intake blockage on hot water heater - shuts off

I have a similar problem to a question I’ve seen posted here before. I have a high efficiency water heater...and the sensor keeps shutting it off as the intake pipe outside gets full of frost. I’...
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0answers
79 views

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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1answer
44 views

Venting a bathroom fan to the attic

I was reading the posts on why it is NOT a good idea to vent a bathroom fan to the attic. I agree, but is it against most code to do this? Can someone point me to the code? Shouldn't the person who ...
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1answer
53 views

Cutting into footing for plumbing?

I am adding a bathroom in my basement on an exterior wall. After cutting out the floor, I can see that the footing extends about 8" in to the space I had planned on putting my vents. Is it OK to ...
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0answers
86 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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0answers
41 views

Fixing masonry opening in chimney for water heater vent

What the right way to fix this? This is the opening to a chimney, for the vent pipe for a water heater. I needed to enlarge the opening from 3 inch to 4 inch. You can see the round part on the left ...
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1answer
118 views

does my toilet have a venting issue?

My toilet is making a slight gurgling noise at the end of the flush. Here is a video of the flush: https://photos.app.goo.gl/yIcFN14zdgDAAFu43 The toilet is vented via a 2" vent that meets the toilet ...
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0answers
590 views

How to Fix a Washing Machine Standpipe Backup - Has Been Snaked

Last year a washing machine was installed in the basement. After a year with no problems, the drain pipe started to back up as soon as the machine went on spin cycle - within six seconds of water ...
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1answer
198 views

was this vent flashing installed totally wrong?

Just bought the house and I don't really know anything about roof work. After some stormy days we noticed a ceiling water spot. A vent flashing is the most likely culprit far as I can tell; there are ...
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2answers
40 views

How can I resolve drain issues in a home with no venting?

The country house I live in was built 40+ years ago. Had septic tank replaced and a broken exit pipe repaired. Now air is trapped in the house pipes so upstairs drains into the downstairs tub and the ...
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1answer
95 views

What should I look for in a roof dryer vent?

I'm in the process of installing an upstairs laundry room, and I'm looking to vent the dryer to the roof. The route to an outside wall is almost 25 feet, with a few turns, whereas the route to the ...
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0answers
129 views

Heating vent making whistling noise

I live in a new apartment building with fan coil heating/cooling. I'm using the heat for the first time, and the supply vents make a high-pitched whistling or maybe squeaking sound when the fan is ...
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1answer
249 views

Bathroom exhaust vent into crawlspace

It is acceptable to vent a bathroom exhaust fan into a crawlspace? The crawlspace in question is uninsulated, has a dirt floor, and varies in height between 5' and 7'. The vent would enter roughly in ...
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0answers
52 views

Grounding of a Metal Roof Vent

My kitchen range hood is vented through the roof. The vent pipe on the roof is made of metal and extends a bit higher than the roof ridge. It is connected via metal ducts to the range hood. The range ...
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2answers
52 views

What type of bathroom window for max airflow?

I don't have fans for ventilation at the moment and may choose not to have but I have big windows in bathroom. What type of window should i install? The common ones here are those rectangular ones ...
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1answer
68 views

Bathroom addition with separate vent stack and new line

I am relocating washer and dryer in a garage that was remodeled by the original owners to have two bedrooms and a craft room. This remodel is very dated and disjointed and we are wanting to add a ...
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3answers
282 views

How do I connect a Class B vent to this heater

When I moved in a two years ago this heater wasn't working. Turns out the tree roots crushed the gas line. When I did my patio I had a new gas line put in. The heater fires up and runs good. The prior ...
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2answers
2k views

Is it Ok to mount a bathroom extractor fan at floor level?

I am fitting a new shower to a downstairs bathroom (the room previously only have toilet & sink) and need to fit an extractor fan. The room borders onto an enclosed porch (uPVC doors & windows ...
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2answers
159 views

How can I clean my dryer vent?

I called a handyman for cleaning my dryer vent under my house slab. It is a glass pipe vent. He cleaned it up using water from the laundry room hose. Is this an okay way to clean up the lint? I also ...
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1answer
266 views

Gas dryer water heater vent

Is it safe to use the same outside vent outlet for a gas dryer and gas hot water heater? The 3" diameter, 18" long, water heater duct joins the 4" diameter, dryer duct in a Y right at the wall with 2" ...
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1answer
226 views

Ridge Vents vs Gable Vents Energy Savings as a Percentage or $ Figure

I am having a new roof installed and there is an additional item Ridge Vents that I can add to the home - I currently have Gable Vents - no sofits. I understand that the gables need to be blocked and ...
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1answer
124 views

What professional installs dryer vents?

I need to relocate our dryer vent. It goes behind the wall and to the roof. With our new stacking machine, we need to move a few feet. For the life if me, I can't figure out who to hire to do it. I ...
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1answer
248 views

Powder room venting into ceiling space?

Is it OK to vent a powder room into the ceiling space? Humidity isn't the issue just odour. I don't have access to the outside unfortunately. I see there are ductless fans for this purpose, but they ...
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2answers
100 views

Can anybody idtentify what this drain vent is for? [closed]

I am trying to identify the reason for a drain vent in an area of my house with no other plumbing. The house only has 1 bathroom and a kitchen sink. The kitchen sink drains into a grease trap and has ...
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1answer
313 views

Was this damage to my ceiling caused by heat from a water heater vent?

I want to know if this is normal. See attached photo. Can a water heater vent create this much heat? It would appear that the garage ceiling all around my hot water heater vent is being burned by ...