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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
44 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
35 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
46 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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73 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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58 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
77 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
60 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
75 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
38 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
41 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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47 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
200 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
764 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
129 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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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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31 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
243 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
490 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
62 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
138 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
46 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
58 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
116 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
93 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
58 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
37 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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0answers
42 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
190 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
48 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
58 views

Best way to connect to short dryer duct inside wall

What is the best way to connect my dryer securely to this outgoing dryer vent? Should I find a small connector piece, place the crimped end inside the vent, and secure the inside of the joint with ...
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0answers
38 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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6answers
217 views

Letting fresh air through a window without letting noise in

I live in an apartment and it's pretty noisy outside, so I usually keep my windows closed. It does get pretty stuffy inside though, so I'm wondering if there's a way to get air through the window ...
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2answers
115 views

Sewer gas smell in replumbed old house

We bought a 1920 house about a year and a half ago and occasionally we can smell a sewer gas odor and I’ve been trying to figure out what the cause is. Whenever we smell it, it’s coming from either ...
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24 views

What is a compliant box for a range hood in terms of a correction request by an inspector?

I’m remodeling a kitchen and the electrician wants to charge extra to fix wiring issues with the range hood and junction box. However, the inspector told me that one of the corrections the electrician ...
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3answers
83 views

Does using an existing attic exhaust pipe to also serve air flow from a range hood cause smells/micro particles of oil/soot/etc to get into attic?

Our kitchen renovation contractor decided to change plans on us and vent the range hood out via the same pipe as was pre-existing to passively control the temperature in our attic, instead of vent out ...
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0answers
54 views

Ventilating closed-off chimney

I'm installing a flueless gas fire to an old chimney breast in a ground-floor living room and the fireplace in that chimney is being completely sealed off as a result. I'll be capping the chimney ...
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0answers
68 views

Range Hood vent and rules regarding distance from windows/doors

I want to exhaust my range hood directly through the wall. I have a brick veneer house. There are 2 windows and a door close by. What rules need to be followed?
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1answer
130 views

Is my plumbing drain/vent setup ok?

I'm new at plumbing, working on installing a master bath in our house. Pictured is the room with the shower pan in place, a vanity drawn where that will go and you can see the toilet flange sitting in ...
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1answer
32 views

How to remove a bathroom fan vent grille for cleaning

I have a bathroom fan vent that doesn't completely come off, it stays attached but pops down (see attached images). Should I clean these things using a ladder, or should I remove them and wash them ...
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1answer
32 views

gurgling sound in the power vent pipe

My Furnace is a high eff furnace with a power vent. There is a gurgling sound in the power vent pipe, when it is running. I noticed that the vent slopes up then has a 90 elbow then slopes down ...
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3answers
1k views

Can I replace a microwave with a range hood exhaust vent without doing carpentry?

My fairly small kitchen has a standard (30") four-burner slide-in gas range, and above it a microwave with a built-in vent. All over 10 years old. The vent exhausts to the exterior via a duct that ...
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1answer
74 views

Flexible duct behind dryer looks a little sketchy

So we just noticed that the air flow in our house is always bad when we run the dryer. Looking behind the unit, we found a foily looking mess of a flexible duct behind the dryer. It looks almost like ...
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1answer
513 views

Restrictions on 90 Degree Elbow for a Bathroom Exhaust Fan?

The manual for a certain (100CFM/4") bathroom exhaust fan has a restriction on using 90-degree elbows close to the unit. Why is this? Is it okay to use 90-degree elbows further down the exhaust path? ...
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2answers
3k views

What Type of Ducting Should Be Used for a Bathroom Exhaust Fan?

I'm planning on installing a Bathroom exhaust fan (Just a note, the port is 4") and am curious as to what kind of duct should be used. I've heard that the duct should be insulated to prevent water ...
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1answer
943 views

How much clearance do I need above a floor vent?

I am building a custom shelving unit that will sit over an inconveniently located floor vent/diffuser. My thought is to raise the bottom shelf up on stubby legs so that it does not block the vent. The ...
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1answer
62 views

Making your own B Vent Attic Insulation Shield?

I'm installing a 45k BTU gas heater in my garage. It will be a vertical vent installation with 3" b vent pipe and I'm going to insulation the attic with about 18" of cellulose insulation. No one ...
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1answer
39 views

Wall grille that fits one step stair

Between my dining room and living room upstair area, there is one step down and there is a wall grille that is 5.5" tall. What drives me nut is there is no 14x5.5 grille anywhere. There is either ...
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2answers
122 views

How to install vent cap over cement pipe?

The picture attached is a cement vent pipe I found on the roof for water heater venting. Looks like the cap has been broken off, but I have no idea what was the original looks like. The diameter of ...
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2answers
41 views

Condensation though vent

We bought an underground house (bunker). After installing bathroom ceiling vent fan we have condensation dripping from fan. Due to using existing duct work that runs up through 9 inches of concrete ...