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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0answers
47 views

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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1answer
46 views

Range hood impeller slipping on rotor shaft

My range hood has a motor with an impeller on it. The impeller is attached to the rotor shaft by a nut that threads onto the impeller's... bushing I guess it's called, which is slotted, so that as the ...
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1answer
51 views

Does a 100 year old home need attic ventilation added if no problems have occurred?

We purchased a 1920 brick home 2 years ago and are pricing a new roof and the roofing contractors want to put in ridge vents and soffit ventilation systems. We currently have two large awning style ...
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1answer
74 views

Can I vent plumbing in an old house to the crawl space? [duplicate]

I have an old farmhouse with a bathroom vanity, laundry room, and kitchen sink/dishwasher draining into a single septic run. There aren’t any vents installed in the system with only a crawl space ...
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1answer
192 views

Venting Range Hood into Attic Space, Temporarily

My ductless recirculating range hood broke, and I have to install the replacement. I love to cook, so I'm installing a roof vent for a ducted hood. The range hood I bought has good filtering for ...
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1answer
95 views

Is there a rule about minimum rise of a vent pipe before it can run horizontal?

I am replacing my shower/bath, including removing the wall that houses the vent pipe (the new unit is free-standing). To make the repiping easier, I want to redirect the tub vent pipe to merge with ...
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1answer
44 views

Structural damage because of air vent

I need to make an air vent for a tumble dryer hose on an external structural wall. Is there any chance to compromise the wall structure because of the hole for the vent? Should I add a structure ...
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33 views

bathroom vent not working correctly

Had some mildew on the ceiling so I thought some thing was wrong with the exhaust sucking the moisture from the shower. So I vacuumed everything and removed the flapper and cleaned that as well.So I ...
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1answer
320 views

Why is there a 1/2-inch hole drilled in my heater exhaust?

I have a Carrier high efficiency furnace which uses 2-inch PVC pipes to pull in combustion air from outside and exhaust the combustion gasses back outside (through a concentric vent, but that's not ...
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1answer
69 views

How to terminate cooker hood ducting

I have a probably stupid question about assembling ventilation pipe for a cooker hood. I want to vent my cooker hood through the eaves rather than go through the roof as I suspect it's cheaper, less ...
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1answer
35 views

Can I remove this HVAC damper?

Is is possible to remove this damper? It looks like there are special kind of screws about an inch above but I'm not sure how those would come out. If I can't be remove could it be cut out? I have an ...
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39 views

Bathroom exhust fan ducting - size, length & CFM

Still trying to solve my problem of bathroom vent fans that aren't vented anywhere... Was considering running out the gable, but that's 25' away, plus another 10-15' of duct and a couple of elbows to ...
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3answers
162 views

Cutting stud in load bearing wall to create vent opening for cooktop hood

We are installing a wall mounted cooktop hood over a gas cooktop as part of our renos. We have centered the cooktop along the kitchen wall but unfortunately that places the center line right in ...
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2answers
79 views

Bathroom Vent - exhausts into attic insulation - what to do today?

So my wife called my attention the fact that the kids bathroom has some grunge on the ceiling and tends to have lots of water drops when in use. First issue - at some point the vent motor was ...
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0answers
16 views

Is it proper to install a ceiling vent for HVAC if it blows on the windows in the “open” position, but not in the “closed” position?

I understand that HVAC vents should be aimed at the windows (ceiling and floor vents) to maintain the target ambient temperature and avoid extremes in a room. In the case of a residence in a humid ...
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1answer
27 views

How does one properly seal a celling vent of a forced air hvac system?

In a room that may have had some kind of condensation on the past, how should one go about sealing the area around the vent hole in the ceiling, specifically to reduce the likelihood of returning ...
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63 views

Temporarily close 5" hole in plexiglass

I have a portable AC unit venting through a 5" hole in a plexiglass window. I replaced the glass window with a plexiglass one to do this since the windows that open are casement-style. The AC unit is ...
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56 views

Frame a jack stud without bottom plate?

I need to frame a small header in my kitchen exterior wall for a range hood exhaust because the 8" hole is dead center on a stud (of course). It's a 2 story 1941 house with 2x4s 16 on center. The ...
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2answers
34 views

Help me find a replacement vent

Have a wood burning fireplace and the chimney has an air intake vent. The vent has seen better days but not sure what to ask for at the local stores. See photo [ update ] After getting up in the ...
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1answer
159 views

Installing PEX pipes close to heating vents

We are renovating all the bathrooms in our house that was built in the early 70s. The plumber has replaced most of the copper pipes with PEX tubing. He has not replaced copper entirely and has ...
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1answer
77 views

Position of dryer vent relative to gas meter and furnace intake

As part of renovations to our house (built in the early 70s) we are reconfiguring the laundry room and moving appliances to the opposite wall. The laundry appliances will now be to the left of the ...
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2answers
89 views

Periscope dryer vent in exterior wall

Our exterior wall has 2x4 framing and we wanted to see if we can run a periscope vent for the dryer in the exterior wall before venting out. We are trying to save some space in the laundry area so ...
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1answer
80 views

Why does my bath fan duct have dried grass in it?

So I was exploring my bathroom fan setup with the intention of sending a new wire through the wall to put the fan and light on separate switches. In the process, I noticed that there’s a white plastic ...
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2answers
93 views

Does my mechanical room need ventilation to the exterior?

Sorry for the confusing post. I don’t have a manual as the prior owner didn’t have it. If I understand correctly, a boiler room in a residential home requires a vent for fresh air. This boiler room ...
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2answers
102 views

Adding a return vent to a hot office

I have an office with a significant amount of computer equipment in it that generates quite a bit of heat and is regularly 3-12 degrees warmer than the rest of the house when I'm working in there with ...
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2answers
66 views

Does an 8“ round to 10x3.25” elbow exist?

I have open space above cabinets and wife does not want a chimney on our range hood. SO I am looking for an elbow that will take the 8" round vertical exhaust and go 90 degrees into a 10x3.25" (we ...
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2answers
92 views

Crawlspace encapsulation

This past weekend I recently had to fix the flooring of my family cottage. In a heavy-traffic side entryway, the plyboard floor was bending when you walked over it. We opened up the floor to see ...
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3answers
50 views

Removing cap from box/turtle style roof vent

I have a vent on a shed roof: that has a huge wasp nest inside (though no wasps (at the moment), thankfully!). I can see it from the inside of the shed (not pictured). I thought it would be easy to ...
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2answers
46 views

Ceiling vent right next to wall. Ideas for grille cover?

The typical size 10x4 won't work because the wall is right next to it on one side (see picture). I can buy a smaller size but then the question is where do I screw in the second hole. Any ideas?
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1answer
49 views

HVAC leaking from saturation

So I've been having a leak in my AC handler. A lot of water was dripping into the drain pan which eventually hit my float switch. I recently moved into the house and the AC unit is 10 years old (...
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1answer
474 views

Hot Garage - Do Garage Door Vents Work?

My Garage gets hot in the summer! Outside temp might be 85 degrees Fahrenheit but in the garage it's over 110. If I leave the door open about 8 inches temperature equals out. Issues with leaving ...
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1answer
794 views

How can I duct through a new cabinet from a floor vent opening at the wall?

Got a window bench put in, but need a way to direct the air from the old baseboard vent register hole to out the front of the bench. NOt so sure a box store is going to have the proper vent duct parts ...
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1answer
34 views

Dryer exhaust pipe

M1502.4.1 Material and size. Exhaust ducts shall have a smooth interior finish and be constructed of metal having a minimum thickness of 0.0157 inches (0.3950 mm) (No. 28gage). (a) can I use metal ...
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2answers
260 views

Can I vent a portable air conditioner unit through a heat vent?

I have an old house and don't have a window to open for the portable AC to vent to. Can I vent it out through a heat vent (my home has modern ventilation)?
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50 views

toilet won't drain - appears to be no blockage

First floot toilet - extremely slow drain, more than 2 hours. Bath - extremely slow drain, ditto. Sink - gurgles a bit (also while bath trying to drain) but will drain with cold tap going full blast. ...
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33 views

Is there a simple way to evaluate whether a vent stack is clogged?

I recently spoke with a home owner who has had a number of plumbing issues, ultimately resulting in a new sewer line run from the residence to the main. The homeowner is concerned that there may still ...
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2answers
545 views

How to remove an external dryer vent cover when it's covered by stucco?

I don't know who built this house but they did it stupidly. I need to replace my external dryer vent cover because one of the fins broke. However, it seems like whoever built the house, covered the ...
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3answers
1k views

Range hood vents into attic space

My house was built in 1976. I recently replaced the range hood and discovered that the piece of rectangular ducting that runs inside the cabinet is not connected to the outlet vent on the outside of ...
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1answer
64 views

A more thermally efficient house - can I block up vents in my brickwork?

I live in the UK in a typical '1930's semi' house. It is built with two layers of good old bricks and a cavity wall inbetween them. In my hallway, there is currently no carpet or hardwood flooring - ...
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2answers
184 views

Dryer vent through cinder block and then through yard - is this ok?

I've been researching how to vent my basement dryer, using galvanized steel ducts. There are lots of things on Google that show how to do this under a normal situation, but mine is unique, and I can't ...
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2answers
65 views

Question on drywall patch in the ceiling

I have a ceiling vent where the drywall is cut a bit larger than the actual vent. I was looking for some advice on the repair. The duct is mounted to a stud along the top (a piece of the stud is ...
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1answer
70 views

Drywall before or after vent installed?

I have a large (14x20) wood louver with a frame that is going over a return vent. Should this be installed first and then have drywall put around it, or should I install the drywall first, then cut ...
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1answer
542 views

Can you shorten class B water heater vent pipe?

New gas hot water heater is 5" taller than old (of course the same size would be too easy).Flex water and gas lines -no problem; but the class B ( double wall ) exhaust vent is ? Can it be cut? How? I ...
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2answers
126 views

Basement Bathroom Venting Help

Our basement has been roughed in for a bathroom. My layout has a three floor PVC pipes coming out of the ground. The left most pipe has a tipped over bucket cemented onto the floor. There is a middle ...
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1answer
69 views

venting bathroom fan through soffit

So here's my experience of venting through the soffit. The humid air from the bathroom is expelled downward and rises up again to the soffit and in very cold weather in Canada it freezes there, then ...
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1answer
42 views

Stalling roof turbines to improve air flow?

My landlord claims that roof turbine ventilators move more air when they do not spin—e.g. by stalling it using a piece of wire tied through the vent and the brace. His reasoning, roughly, is that when ...
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50 views

Bathroom Vent Fan Leaks

I have red water leaking/dripping from the vent bathroom fan in the second floor bathrooms. This only happens after a good snowfall and during the snow melt as it warms. We get about 6 hours of ...
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2answers
360 views

Is there a dimmer light switch with secondary constant 120V output?

I have a vent fan and an overhead light in my bathroom. They are currently tied to one standard light switch. When that light switch is in the "on" position, the vent fan and light are both powered on....
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1answer
54 views

Flashing and/or sealing for vent through built-up roof (BUR)?

I'm reconfiguring plumbing and need to poke a new vent through the roof of my Chicago two-flat. It's a built-up roof of tar, felt, etc., with a slight grade. How to finish the roof portion so that ...
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0answers
42 views

Nice way to cover vent and drain after removing washer dryer

We have moved out washer and dryer upstair. But the basement bathroom still has all the vent and drain holes. What is the best way to cover or make things look nice (beside drywall over)? UPDATE 1 ...

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