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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1answer
111 views

Using plumbing roof vent as drain?

I'm current planning a rooftop terrace which should include a small outdoor kitchen. I would like to know if it's possible to use the existing plumbing roof vent to connect the kitchen drain? Should ...
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1answer
209 views

Semi-rigid dryer duct in contact with PVC drain pipe

I just installed a dryer vent using semi-rigid aluminum duct. Approximately 7' from where the semi-rigid duct attaches to the dryer at floor level, the duct touches a black PVC drain at ceiling level....
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154 views

How easy is to relocate a plumbing vent pipe fixed verically on an outside wall to a different wall

I recently had a loft extension with bathroom in it. My builders have installed the vent pipe on the wall outside the extension on the wall shared with one of my neighbours. Now my neighbours are ...
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4answers
22k views

Drywall surrounding vent no longer supports screws;

Screws that normally fix the vent in place can't do their job anymore. The drywall has crumbled to the point that the tapped hole for the screw lacks a boundary with the duct. (Picture attached.) ...
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0answers
267 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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1answer
1k views

Wall Oven and Microwave Vent to Attic

I bought a house that has a microwave & wall oven combination. It's a Kenmore model from 2008. The microwave & wall oven combo vents through a metal pipe (about 4 inches) that runs through ...
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1answer
164 views

Does this vent cap limit passive air flow?

I am looking at various vent covers for my house. I have a 3" Plumbing vent stack and a 4" Radon vent stack. The radon system is passive, which means I do rely on a chimney effect along with the ...
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1answer
85 views

Range hood installation for non built-in stove

I'm looking to buy a range hood for our stove. The hood will be externally vented through the roof (1 story house) since it's on an interior wall. It seems that most of the wall mounted chimney units ...
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2answers
127 views

Extract air in bedroom with no other vent

I have purchased a MORI HR 150, which is an extractor vent. It has an "alternate flow" and "extract only" setting. I want to set it on extract only, which means it will take the air from inside and ...
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1answer
6k views

Excessive Grease in Above Stove Microwave

This weekend the wife and I replaced an above the stove Microwave that was installed 10 years previous when the house was constructed. It was supposed to vent to the outside. Over the years I was ...
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2answers
2k views

No Attic vent, in Florida, new-ish house - needed?

We have a SW Florida (Cape Coral) house built in 2005. The house is block construction, high ceilings (10-14'), about 3100 sq ft, and concrete tile steep hip roof (by eye at least 12 in 12). The ...
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1answer
221 views

Plumbing drain and vent question

I am in the middle of a bathroom remodel and discovered an assortment of drain and vent pipes behind the old shower. As I get ready to reframe the wall and make the plumbing ready for a tub, I find ...
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3answers
6k views

Can I replace my bath fan with one of similar size?

I have a very small bathroom with an electrically powered air vent (extractor fan). When I turned on the light, it seemed to break down, and has not been working since then. I want to try and fix the ...
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1answer
501 views

Wiring bathroom fan and light

So I'm not the best with electrical work, and I'm running into issues replacing my bathroom vent fan and light. The setup is three switches on the wall: One switch controlled fan. One switch to ...
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2answers
794 views

Changing furnace filter

I moved to a new house recently. The house is around 40 years old. It has a central heating system (natural gas furnace). I hear that one should replace the filter regularly (like once a month, or ...
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0answers
337 views

How to vent large outdoor undercover area

I have a large (95 sq meters) undercover area behind my house: A few things to note: The house is just to the left of the picture. The roof of this area slants from the house to the far wall (as you ...
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1answer
2k views

Can a vent hood designed for 12“ deep cabinets be installed under IKEA's 15”-deep cabinets?

We're redoing our teeny-tiny condo kitchen (8 feet square), and one way we're saving space is with smaller appliances - 18" wide dishwasher, and 24" wide fridge and range. For the 24" range, we need a ...
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0answers
2k 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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1answer
5k views

Is It Okay to Put Dryer Vent Behind Drywall When Finishing Basement

I am planning out a major basement finishing project and would like to seek some guidance on a dryer vent question. I plan on having my dryer vent behind my framed drywall, allowing for 6" of space ...
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0answers
95 views

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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2answers
306 views

Could smoke odor be originating from the HVAC system of an adjacent townhome?

I live in a townhouse and I hired a company to remove the smoke odor in the house. Now, the odor is almost gone when the heat is off. However, every time I turn on the heat, the smoke odor will come ...
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0answers
240 views

Minimize the Refrigerator distance from the back wall

I would like to minimize (as much as possible) the distance of the refrigerator from the back wall. I already scrubbed as much plaster as possible from the back wall (behind the plaster is a concrete ...
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1answer
220 views

dryer vent near water pipe

I'm running a dryer vent through the floor close to a water pipe and am wondering if in very cold weather the dryer vent would get cold enough from outside air (with only the plastic cover on the ...
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2answers
3k views

Vent kitchen hood vent to roof turbine vent?

I had a contractor install a hood vent. He ran a foil pipe up towards the roof and tie it @ 6 in below the turbine vent (whirley birds). Is this adequate for all the fumes to escape out? Is this ok? ...
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5answers
7k views

Can I cut a hole in a 2“ x 8” joist that is less than 1/3 the height of the joist, leaves at least 2“ above and below the hole, but is 10” wide?

I would like to redirect a 5" air pipe to the other side of a 2" x 8", second story, floor joist so that I can have the vent exit a bathroom vanity kick plate. I realize I cannot just drill a 5" hole ...
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0answers
47 views

why the crawlspace vent is closed?

I just move to a home and noticed the previous owner closed quite a few crawlspace vent. It seems to be intentional. I am wondering why he choose to close most of the vents and leave some of them ...
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1answer
770 views

Island sink drains… slowly

We've converted our kitchen to an open plan by tearing out the wall separating kitchen from dining area, so that the sink and dishwasher are now in an island. The wall that I tore out, of course, ...
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1answer
156 views

Adding exhaust fan to semi-rigid dryer duct

I recently moved into a new house purchased by my friend/roommate/landlord. I plan on setting up my electronics workshop in the basement laundry area this weekend. Although there is plenty of space, ...
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1answer
540 views

How tight does vent screen have to be, to keep out swarming termites?

So I found some winged "ants" on my roof. My roof and crawl spaces have vents with 1/4 inch wire mesh, very easy for such "ants" to get into. Of course, they were not ants, they were swarmer termites....
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2answers
348 views

Can there be too many seams in a dryer vent pipe?

BACKGROUND: We have to vent our dryer outside and we will NOT be using any form of flex pipe. The whole thing will be vented with rigid 4" aluminum vent pipe. It is going to take a total 18' of ...
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2answers
63 views

Thermal Question About Heat Management

I have a house that has a loft. The loft has a flap at the highest point that has a turbine cut in the roof deck. On hot days the turbine will spin sometimes very fast as hot air escapes. My question ...
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2answers
145 views

Inspection suggested to replace vents between laundry and garage

I have a house up for sale, and a recent inspector called this out (to which the buyer is requesting to be serviced). When I purchased the house, my inspector did not say anything about these, so I'm ...
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1answer
90 views

Electrical Work Question

We had an electrician move our breaker box. He put in a junction box and ran a 100 amp cord, along with other wires next to one of our air vents. Is this to code? We worry that even if it is framed ...
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1answer
3k views

How to place a bathroom vent fan in a vaulted/cathedral ceiling?

I'm planning a renovation where the ceiling over the shower is vaulted to the rafters (see elevation below). Where is the optimal or recommended place to put a vent fan in this scenario? The rafters ...
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0answers
96 views

PVC Pipe Venting air outside

Why does hot air vent outside when heater isn't on? I understand it venting hot air out when heater is on but I don't know why it vents air when heater isn't on.
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1answer
557 views

Range Vent Hood Ducting - Can two 5“ ducts work in place of one 10” for a range vent hood?

Purchased a Kitchenaid Range Hood Vent that has a 1200 CFM blower. Instructions say to install a 10" duct vent. My existing venting duct was a rigid but small 6 inch duct. Unfortunately at demo ...
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2answers
6k views

Is PVC an acceptable pipe for a vent stack through the roof

I'm trying to figure out what type pipe I need for terminating a vent stack in the roof. Is it acceptable to run 1 1/2" schedule 40 PVC through the roof for a new vent stack. This will have 2 ...
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2answers
3k views

HVAC not quite reaching the loft/attic floor of my apartment in an old home

Hoping someone might have a solution for this problem. I've got an HVAC guy coming in a few days, but it's always good to have some other opinions, and to have some people who can help me come up with ...
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1answer
543 views

Can I vent a window air conditioner through a joist space for 30 feet?

The situation: We live in a one bedroom + den (rental). We're using the den as a second bedroom, as we're a family of four and that's what we can afford right now. The den has no windows, however, and ...
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1answer
327 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 ...
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3answers
2k views

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
2k 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
4k 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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2answers
8k 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
505 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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1answer
3k 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
466 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
290 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
45 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
696 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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