Questions tagged [ventilation]

Use this tag for any situation where fresh air needs to be infiltrated such as while painting or varnishing, drying carpets, etc., to prevent buildup of unsafe gasses including Radon.

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1answer
78 views

Can I remove this mold by myself?

I am living in a single room-appartment that has one window, a kitchen unit with no steam outlet/exhaust hood, and a bathroom with no windows but an (albeit small) ventilated outlet above the shower. ...
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2answers
42 views

How can I attach/seal around an exhaust fan duct at the roof?

I am redoing the ducting from a kitchen exhaust fan to the roof cap. The old ducting was 6" and I'm increasing it to 8" to match the vent on the new exhaust fan. The current roof penetration is a 6....
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2answers
45 views

Would an opening to the outside help me dry out a basement?

I had a hot tub problem which resulted in huge amounts of water gushing out into the yard. This happened a couple of times. (Hot tub repair company from hell.) The hot tub is situated a few feet ...
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4answers
85 views

Why do all shower cubicles have open tops, and does it have to be this way?

I have a small bathroom with a traditional 2 sided shower cubicle in one corner. Like all shower cubicles it has an open top. The bathroom has both an opening window and a working extractor fan. If ...
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5answers
149 views

AC is dead, should we open the windows to release the heat and humidity?

Live in Central Texas where the temp is in the upper 90's, low 100's. My AC went so I had to put a single room AC unit for my Master bedroom and bath. Square footage for coverage is 600 sq. feet. Well,...
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2answers
52 views

What are the requirements for a bathtub or steam shower in a bedroom?

We live in a suburb of Minneapolis. Our master bedroom has a decent amount of unused space. My wife really wants a steam shower. Rather than remodeling an existing bathroom, I've started thinking ...
2
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1answer
42 views

Adding ventilation to an older outbuilding

I have a large to me storage building that I am trying to convert into a garage/workshop. I don't have the time/money/inclination to tear the whole thing down and start anew so I am trying to make ...
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3answers
47 views

Bathroom Fan/Light Combo

I am installing a new Bathroom Fan/Light combo to replace an older unit. The new one comes with 5 connections - 2 black and 2 white (one of each labeled fan and light) plus a ground. My wiring has ...
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1answer
44 views

Axial or centrifugal fan for short run out of kitchen?

I'm researching replacements for a broken extractor fan in my kitchen. It is wall mounted and runs through the wall straight outside, no long ducting involved. The current (broken) fan is the ...
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1answer
44 views

Crawl space fan under eave blowing into attic

Can you install a crawl space fan under an eave blowing into attic for improved ventilation if you only have passive ventilation vents up top? Thank you.
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1answer
49 views

How important is soffit ventilation with tiled roofs?

While attempting to install a security camera in the soffit of my bungalow home, I noticed that there is wood paneling beneath (above) the soffit. The soffits are aluminum, and it looks as though ...
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1answer
30 views

Proper Trap Diameter

My kitchen sink drains slowly even after I snaked it 20ft without hitting any consequential clogs. I'm thinking there could be a couple of issues: The trap diameter (2.5") is too wide for the inlet ...
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0answers
14 views

water in insulation boards - best method to dry out

I have a horizontal flow brand-new HVAC unit, with a 1" thick insulation board plenum which has had some water ingestion on the bottom panel. The unit is in the attic. I'm quite confident the water ...
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0answers
18 views

Garage gable fan through truss

I'm looking to install a ventilation fan in my garage. I want to install it in the middle (mainly for looks) rather than having it offset to one side or the other. Am I OK to cut through the middle ...
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0answers
25 views

Moisture Control/Ventilation with Cathedral style Roof

I'm in New Zealand, I have recently bought a house with a Cathedral style roof, that in the morning gets a log of Condensation on the Windows etc. Once the day gets going, the house does catch the sun ...
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0answers
75 views

Is this awkward dryer exhaust plan manageable?

I'd like to replace my 90's era washer/dryer with a modern one, but my space constraints are very strict. I can't get a dryer that sticks out any further from the wall than my current one, which is 25....
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0answers
26 views

Rough in bathroom exhaust

So, I have a pretty basic question that I can't really figure out for some reason. Is there a way to rough in bathroom exhaust fans before siding? In other words, there are trim kits for sconces, ...
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2answers
111 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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0answers
26 views

Diagnose poorly functioning whole house fan

I installed an AirScape3.5e whole house fan. I don't think the fan is operating at its max potential. It just doesn't seem to cool the house down very much when running even when the outdoor ...
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0answers
197 views

Open cell spray foam off gassing 2 years later. How to fix?

My home was built in 2017 and has Accella open cell spray foam in the unvented attic. In spring & summer 2018 we noticed a mild chemical smell coming from the attic on hot and/or humid days. It ...
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1answer
53 views

range hood confusion

I am making some changes in a somewhat older kitchen. Part of this is replacing the stove with a 30" dual fuel (LP) range but keeping the existing 300 CFM fan. I was all set to buy a professional ...
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2answers
30 views

What type of exhaust ventilation is best for attic?

We want to add exhaust ventilation to our attic (hip-style composition roof). Which type is most effective, passive or power?
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0answers
138 views

Can a bathroom fan go out a ridge vent, and how functional is this temporary fix?

I'm in a 1 story craftsman house and have a bathroom vent that had no ductwork, just pouring wet air into the attic. The vent also didn't work well to begin with so we never used it and thankfully ...
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2answers
51 views

Can I leave an unused conductor when running wire for an extractor fan?

Whilst wiring a new extractor fan, I’ve ran out of twin and earth but I have some left over three core and earth from the lighting (1mm^2). The fan doesn't have an over-run and only requires 2+e. It ...
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1answer
71 views

DIY cold room ventilation

I live in Southwestern Ontario (seasonal temps of around -5°c in the winter, around 30°c in the summer) and I would like to build a cold room in my basement. The basement is unfinished with poured ...
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0answers
19 views

Adding Collar Ties as Chase in 1930 Tudor

I'm planning out how to insulate and finish my attic without compromising ventilation. I'm zone 7, with a large, entirely floored attic. Roof is hard slate, original to 1930-built home. No current ...
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4answers
182 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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1answer
363 views

Putting a microwave in an island?

We are remodeling our kitchen, and we are going to put the microwave inside of our new island, Below the counter top, Built-in with the cabinets. Our old microwave is an "over the range" microwave ...
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2answers
58 views

Should I be concerned about ventilation in a small room?

I have a 10'x10' room in my garage that I use as a drum set practice room. I've been sealing it up better to provide some sound proofing. The sealing is not extreme, but I have an exterior door (like ...
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1answer
47 views

What is this tiny ventilation mechanism in my window frame and how do I replace it?

I live in a building with wooden double-glazed window frames and have this tiny "ventilation" outlet installed into one of the larger windows in our apartment (see below). What is its purpose, and ...
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2answers
315 views

Should I keep attic gable windows open for ventilation?

Our attic only has a ridge vent (no soffits). It also has two windows on either end. It was recommended that we keep them open to help ventilate the attic. Is this a good recommendation? Should we ...
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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
52 views

Curtains for a non-air-conditioned apartment in the tropics

We live in Mumbai - West coast of India, tropics. Summers are from March to July with temperatures reaching early 40 degree Celsius and a lot of humidity. It rains from July to September with ...
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3answers
86 views

ventilating mildew-prone walk-in shower

I have a walk-in shower, roughly 2-1/2 x 5 ft, 7ft high, with a shower-curtained opening. The mildew problem on the grout is pretty bad. I've seen some good articles here on controlling mildew, but ...
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2answers
70 views

Can I ventilate attic space using wall vents?

As an alternative to use a timber trussed tiled roof vent that involves removing tiles, can I instead replace two or more bricks, some on each end of my house, with wall vents like this? Presumably ...
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2answers
330 views

Is the ventilation in my utility closet a construction mistake?

With colder weather here in Northern Colorado (down to 22° F) my Goodman 90% efficiency furnace (GKS90453BX) came on for the first time in the (ca. 2005) home that I recently moved into. The furnace ...
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1answer
331 views

Do we need a gable vent, and in either case, how to vent bathroom fan outside (can it be via the gable)?

We need to put a hole from our attic to the outside, one way or the other. Before making any holes, I hope to hash out the details. Here's the goals: Make sure attic is properly vented Direct ...
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2answers
47 views

Is a gravity or spring damper sufficient for a make up air vent?

I am planning on installing a make up air vent in my cold air return. I don't want to install an electric system that I have to wire to 3-4 different appliances. Is a gravity or spring loaded damper ...
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1answer
50 views

Will a make up air vent cause an issue in the winter?

I recently installed a gas range and I will soon be installing a 300cfm range hood. Since I primarily burn wood in the winter for heat and I don't want any back-drafting issues, I am planning on ...
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1answer
99 views

Do I need a bathroom fan to increase house ventilation?

I had an energy audit done recently and one of the recommendations was to air seal and reinsulate the attic which was expected. What I did not expect was the recommendation to install a bathroom fan ...
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1answer
80 views

Modern half-bath copper DWV configuration

First off: I KNOW PVC is fine. I KNOW PVC is cheap. I KNOW PVC is fast. I KNOW PVC is more flexible. I KNOW PVC would still be working [sarcasm] 300 years after I'm dead. Now that I've sufficiently ...
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1answer
143 views

Downstairs exhaust fan venting into upstairs?

I recently purchased a bi-level home with two full baths. The inspection didn't include ductwork, but it seems to me that the downstairs bathroom is somehow venting into the rest of the house. There ...
0
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1answer
62 views

6" Ducting straight to in-wall rectangular ducting

I have a vent for the microwave-range that goes from an interior kitchen wall to the outside of the house. I need to re-locate this, but I can't move the exterior vent fixture. It currently comes in ...
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1answer
401 views

Garage gable fan proper installation

I want to add a gable fan in my garage to help cool it and help to let out the humidity in the winter. My garage doesn't have a high peak, so there is about 24" of height at the peak on the gable and ...
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1answer
64 views

Can I use the built in vacuum system for ventilation

I have an old house which has been updated but it doesn't have great ventilation in the finished basement and often smells a bit musty and damp There are no leaks and the drainage system has ...
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2answers
202 views

Is there any benefit to using vented aluminum soffit over solid wood soffit?

I'm wanting to cover over my home's old solid wood fascia and soffit probably with aluminum fascia and vinyl soffit. There's an option to have either vented or unvented soffit. Since my current ...
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1answer
105 views

Correct air vent for a gap found in wall

I am renovating a room in my house and I have come across the hole pictured. It used to be covered by a light wooden box that allowed the air to flow upwards. I was not to keen on it and have taken it ...
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2answers
64 views

In summer, should attics simply have fans or other ventilation?

The house we have in the US south seems to function in this way in summer: I know nothing about AC/insulation systems but it seems that: If there was simply airflow through the attic, it would stop ...
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2answers
51 views

Trear chimney down below roof line

I have a hot water tank venting through the chimney. The chimney on the roof needs replaced which is expensive. Could i tear the chimney down anchor 4 inch pcv to chimney below roof line and would ...
2
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1answer
339 views

Best type of fan for sucking air through a small hole?

I'm trying to cool a little server farm in my rented apartment that consumes around 5kW of electricity. The insulation of the building is crap and there is no central heating so during the winter it ...