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0
votes
1answer
62 views

Can we capture the hot, humid air from a gas-powered clothes dryer during winter?

During winter we run a gas-powered heater and evaporative humidifier to maintain indoor air quality. Meanwhile, every day (big family!) we run a gas-powered clothes dryer which dumps hot, humid air ...
0
votes
1answer
16 views

PVC vent pipes or concentric vent pipes for tankless gas water heater?

I am trying to select a natural gas water heater to install into my house. It has to service two bathrooms with showers and two kitchen sinks, a dishwasher, and a washing machine. I've narrowed my ...
1
vote
1answer
12 views

will using a ventilation system with an heat exchanger give me the same quality air indoors as outdoors?

will using a ventilation system with an heat exchanger give me the same quality air indoors as outdoors? is using a proper ventilation system equivalent to having all your windows open without any ...
1
vote
2answers
61 views

How can I prevent a bathroom fan from vibrating?

I am replacing the ventilation fan in our master bathroom this weekend. The previous one (about 12 years old) developed such a vibration over time that it managed to undo the bolt holding the glass ...
0
votes
0answers
12 views

Is sealing via tape necessary for knee wall foam board insulation.?

I have dramatically improved the ventilation and insulation situation in my house's knee wall attic space, but I have one concern. I nailed up foam board over the studs and fiberglass batts. Do the ...
2
votes
2answers
143 views

Can a lower cabinet be used over a floor vent?

I didn't see this question asked after my search but I have a wall in the kitchen that has nothing against it and we are wanting to add some cabinets but towards the right of this wall, about 5' from ...
3
votes
1answer
59 views

How do I vent metal doors?

I need to vent our metal utility closet doors. 1 3/4 inch thick metal doors. Need to supply ventilation so the heat exchange water heaters will work more efficiently. Now the closets become freezing ...
0
votes
3answers
44 views

What are my options for temperature equalization between two rooms?

Ideally a bi-directional through-wall vent + fan would be great with built in thermostats measuring both sides. I haven't found that nor am I entirely sure what to search for. Are there components ...
0
votes
1answer
47 views

How to give ventilation/exhaust to an inner toilet without exterior walls?

In our proposed home, there is a common toilet (powder room without bath) but it has no exterior wall. However, it shares a wall with another toilet. Can you please suggest a way to give ...
0
votes
2answers
79 views

Gap between 6“ dia wall thimble & 6” hvac pipe

I bought a 6" dia aluminum wall thimble to vent my 6" dia hvac steel exhaust pipe through to the outside. However, the diameter of the 6" thimble is actually 6 3/4". How do I effectively insulate the ...
2
votes
1answer
83 views

Do I need soffit vents and can I add them without taking the roof apart?

Last year, we re-roofed out 83-year old house. We removed the 3-layer cedar/asphalt shingles and laid plywood decking, 30# paper, ice-barrier and 26-gauge metal roofing. As far as ventilation, we just ...
0
votes
1answer
87 views

Can I cover the vent leading to my crawlspace?

I am renting a house that has no central air, instead we have to use window units. There is evidence that the house used to have a gas heater, and there is a 2 foot by 3 foot hole in the floor leading ...
0
votes
1answer
79 views

Everything in my house vents into the ceiling cavity. Should I change this?

After reading this question: Does a bathroom exhaust fan have to vent to the outside? I realised that the house I live in now, and everywhere else I have ever lived, everything just vents into the ...
1
vote
4answers
437 views

Should I use a Ridge/Soffit vent or Attic Fan?

I am getting ready to redo the roof on our house (shingles and some sheathing) and I am wondering what kind of venting I should add to the roof. The roof currently is not vented at all and as a result ...
0
votes
0answers
20 views

cooking on a hot&humid day

I have 2 window air conditioners in my house. None of them seem to have a setting to bring in (a little bit of?) fresh air. When we cook, the house becomes a bit smokey. Also, the vapors of freshly ...
0
votes
1answer
64 views

Adding ventilation and insulation with limited soffits

I’m hoping to add some insulation and ventilation to our attic. It’s a 1954 with a 1991 addition. The second floor is warmer in the summer, the original part much warmer than the addition. Current ...
0
votes
1answer
49 views

Ventilating a shed

I've just bought a house and inherited a shed with power, insulation and opening windows. I intend to use it as a home office. I'd like to store computer equipment in there, but I'm concerned about ...
0
votes
0answers
124 views

Dormers with ridge vents lower than main ridgeline

My roof contractor placed ridge vents on all peaks on my home, including the dormers. So, I have the main attic space, which is vented by a ridge vent running the entire length. I have plenty of ...
0
votes
2answers
4k views

How much ventilation space does a refrigerator need?

The person who built our refrigerator cabinet box only left 1" for ventilation at the top of the refrigerator. Is this enough space for proper ventilation? There is a 1" gap on either side, and a 4" ...
0
votes
2answers
319 views

How do I reduce the moisture under an exterior wood deck?

Existing conditions: 2000 sq.ft of deck, 3/4" x 4" cumaru planks with 3/8" spacing, over 2x8 pt joist and double 2x12 pt beams, over helical piles. depth of deck to bot of dirt is approximately ...
0
votes
1answer
518 views

Attic Venting of Knee Wall in Cape Cod

I have a cape cod style home, pictured below. The second story living space on the back side of the home is created by having a lower pitched roof. So, the front and back sides of the roof have ...
2
votes
2answers
207 views

How can I vent moisture from a small pump house?

I have a small shed, 8x7, near the house that I use as a pump/filter house for a koi pond. This building has a 7 foot deep basement made of cinder block which houses an open top settling tank, so ...
0
votes
1answer
729 views

can i use an inline exhaust to vent a kitchen and bathroom?

I have 2 bathrooms and a kitchen that are currently unvented. I would like to install an inline exhaust fan to service all three. I will be putting the exhaust fan just inside a gable that will have ...
1
vote
1answer
105 views

Exhaust fan leaking from elbow joint connected to the ceiling

I have a metal elbow joint that is leaking. It is connected to an exhaust fan in the bathroom and runs to the roof. What can I wrap the elbow with to stop the leak?
1
vote
1answer
173 views

How can I vent my roof without removing drywall?

I have a finished attic, that needs to be updated. The pitched sides of the roof are sheetrocked & insulated, the ceiling is a suspended ceiling (will be sheetrocked) and the low knee walls are ...
0
votes
1answer
2k views

Should I block or insulate my air vents for the winter?

I live in a house which consists of a 17 year old extension on a 40 something year old cottage. The two main bedrooms are the only rooms in the house with air vents. They are also two of the coldest ...
5
votes
1answer
145 views

What to use to funnel floor air vent in cabinent for proper air flow

I ripped the "floor" of the kitchen cabinet out to reveal that all along, my vent was funneling air like this, an open hole. The circular opening is about 6 inches across both ways. I need to funnel ...
7
votes
5answers
690 views

Can too much ridge ventilation be detrimental?

At my house in central Texas, where temperatures can persist at 86 - 110 degrees Fahrenheit, one side is always hot, no matter how long the A/C runs. That attic space is considerably hotter than other ...
1
vote
1answer
186 views

Gable and Roof Vents Together?

I need to add some additional exhaust venting to my attics, along with some along the soffit as well. I need some knowledge on a few things as I can't seem to find answers for them on the interwebs: ...
-1
votes
1answer
89 views

How do I improve ventilation above my cathedral ceiling?

I live in San Bernardino County in southern California. Half of my house has a cathedral ceiling, and the other half is traditional attic. The attic has two gable vents, one at each end of the house; ...
3
votes
2answers
131 views

How can I block this venting from rodents?

As a follow up to this question, I have two 54' x 3 " gaps running the length of an overhang in my roof supposedly for venting. I believe these to be the point of entry for some squirrels and who ...
7
votes
1answer
565 views

Why did an HVAC installer add this PVC pipe?

We recently had a VERY old central heating furnace replaced and I noticed that the HVAC installer added the following PVC pipe shortly before the inspector arrived: The metal vents were already ...
2
votes
1answer
209 views

How can I divert wind which is flowing parallel to the wall into the house?

Situation: The house is surrounded by other structures in a way that the the wind direction remains parallel-horizontal to the wall. There are a couple of windows on that wall, but amount of air ...
2
votes
1answer
259 views

Can I drywall over an exterior vent in a converted garage?

Our double-car garage had one car space previously converted into a study by a previous owner. It's a bit ugly, but a very useful space, so I'm going to make it nicer by putting up drywall ontop of ...
0
votes
1answer
141 views

How to fix a ventilation pipe to the wall?

I'm doing some renovations in my toilet/bathroom, and am currently pondering the ventilation. Here's the current situation (click pictures to get bigger versions): My toilet and bathroom are right ...
1
vote
1answer
508 views

Will this DIY window fan setup help cool two rooms in our tiny, narrow apartment?

Before anything else, here's a visual aid (embedded below) to help you through this wall of text. My friends and I are renting a second-floor apartment that’s basically one long corridor split into ...
2
votes
3answers
764 views

Need to know if this is mold or not

This may be an obvious answer to some but I know next to nothing about molds / fungus etc. Is this mold, or black mold? I've been finding it throughout my house, usually by window sills, and am hoping ...
2
votes
1answer
495 views

How effectively a pedestal fan blowing inward can bring the outside air if kept 2 feet away from a fully open window?

other Facts: Window(s) size 3.5 feet* 5 feet (width) Fan (2 nos.) Specifications Product page - specifications Sweep size: 400 MM RPM: 1280 Air Delivery: 75 CMM (What is the formula to convert ...
1
vote
2answers
4k views

How would you vent my basement bathroom fan?

I have a basement bathroom basically smack dab in the middle of the basement. The joists run from front-to-back of house. So going out either side is not an option. Going out the front is not an ...
2
votes
2answers
495 views

Which alternative will be more efficient and beneficial for Bathroom Ventilation? How?

Facts: Bathroom Size: 8 feet * 8 feet * 10 feet (Height) Purpose: (1) Increase the Bathroom air freshness during use (2) Keep the Bathroom dry for the next use Note: Intermittent Extraction of air ...
3
votes
3answers
1k views

How can I improve ventilation in my room with a window fan while filtering pollen from a nearby tree?

This is a campus building in Aalto University where you have a tree about 10 cm away from the window. The Espoo city does not allow the student organisation AYY to cut down the tree. There is a poor ...
1
vote
2answers
287 views

Is it alright for an exhaust fan to vent into the loft? [duplicate]

I live in a rented property, when I moved in a new bathroom suite had been installed. We however have had chronic condensation problems in the property. when going into the loftspace I could not ...
1
vote
3answers
1k views

How can I add ventilation to my basement office?

I have a finished basement with an office, guest bedroom and bathroom. All about 700 sq ft. I work 12+ hours in the office and really need to get some fresh air circulating by extracting stale air. ...
5
votes
1answer
472 views

Will combining roof venting systems cause short cycling?

I'm looking into buying a new house here in Wisconsin that has soffit vents, ridge vents and some additional static roof vents installed. However, when the home inspector came through he said that ...
3
votes
3answers
5k views

How can I insulate kitchen vent to prevent cold air blowing through all the time?

Building code requires my kitchen to have a 15cmx15cm vent (besides the kitchen cook-top vent). This vent is basically a hole in the wall that reaches to the outside. The vent has grating on both ...
1
vote
0answers
290 views

How can I unclog a passive bathroom air vent?

I live in a prewar apartment building. At the top of the shower, on the wall where the water comes in, is a passive vent. There is no powered fan that is installed and no nearby electrical wiring to ...
3
votes
1answer
325 views

Do attic vents or rafter baffles need to be as wide as the rafter bay?

What happens if the attic vents or rafter baffles don't cover the entire opening between the rafters and one or two inches of wood is left exposed?
2
votes
2answers
429 views

Can I move my furnace room ventilation intake closer to my furnace?

I live in a 3 story townhouse with a garage in the basement. Off the side of the garage is our furnace room. The ventilation and exhaust for the furnace goes to the roof. For ventilation (air coming ...
8
votes
3answers
517 views

How can I stop interior doors from opening when exterior doors are opened?

In our church every time someone comes into the building through the main entrance, the interior main sanctuary doors come open and make it possible to hear noise from the hallway. Is there some ...
2
votes
1answer
344 views

How to remedy noisy air ducts?

I have forced air extraction with a duct running through one classroom then a second. The classroom which is ducted closer to the fan receives much greater air flow through its vents. To combat ...