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1answer
9 views

Kitchen fan venting

I am installing a kitchen fan about 9' away from the nearest external wall. The wall there is very narrow and all I can fit there is a dryer type vent that works with 4" round pipe. Also, my spacing ...
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2answers
69 views

How can I prevent reverse air flow from bathroom fan?

I have a second floor bathroom that has a ventilation fan which exits to the roof. Whenever I take a shower there is an incredible amount of freezing air (midwest winter) that is coming in through the ...
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2answers
36 views

Using a 2 inch pipe to vent a bath fan

Hello I'm looking to install a bathroom vent in a enclosed shower on a GFCI circuit breaker. I know its recommended to use something like a 4 inch vent to vent out the stated flow rate, but since it ...
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0answers
48 views

HVAC - hot air flowing on both zones when only 1 zone should be on

I have 2-zone forced air heating, with separate thermostats for each zone. Normally, if the thermostat in zone 1 triggers the system to go on, the heat will only blow through the vents in zone 1. ...
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1answer
18 views

Furnace and Water Heater Ventilation pipe

I have a home that was built in 1924, the pipe that vents my furnace and water heater is green and it is located in my chimney. The top of the chimney is open in my attic, you can see the green ...
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1answer
16 views

Cold bathroom that has exhaust

So I have started to notice the bathroom with an exhaust is starting to get really cold as the temperature is getting colder. Is there something I can do about this? Should it really be that much ...
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1answer
22 views

Can I close my gable vents now that I have one solar fan?

I have an 84 yo Tudor style home in Hawaii that looked fantastic when we first bought it. Living area is 2500 sq ft. It's quite unusual to find such homes because many don't survive the termites. ...
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0answers
55 views

Can I use the old and not used anymore furnace chimney to vent out my basement?

My chimney is not used anymore. Would it be possible or recommended to use it to vent the basement ? I would clean it and install a fan at the basement end. thanks
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1answer
38 views

Can I vent room air to the outside?

The building interior gets hot during the day and stays hot during the evening when it is much cooler outside. It would be a really great option to simply vent the hot air outside instead of having to ...
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2answers
37 views

South Florida roof softit roof ventilation and of insulation batts

I live in south Florida and am insulating the roof by placing batts between the rafters. I'm not sure if placing the batts up against the edge where the beams and walls meet is ok or not. The rafters ...
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3answers
144 views

Bathroom fan with no outside vent

What's the purpose of a bathroom fan with no outside venting? One of my bathrooms is set up this way. I'm about to redo the ceiling, and I'd like to replace the fan unit with something better looking, ...
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1answer
54 views

How can I improve my ventilation throughout my house?

I just bought my house and it stays rather cool. However I've found while painting that the flow of air through the house is limited. My vents are all on the base board/wall if you can imagine. Not ...
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1answer
231 views

Why would a blower motor work with A/C, but burn out with furnace?

I've gone through 2 blower motors since I purchased the home 3 yrs ago. I never have an issue with the blower when the AC runs; but it keeps dying in the winter with the furnace. I've had 2 HVAC ...
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1answer
216 views

knee wall no venting possible

My master bedroom is above my garage. There is one part of the bedroom that has a cathedral ceiling with knee walls on both sides. There is no attic above this area because the drywall goes up along ...
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1answer
69 views

Attic ventilation, do I have enough?

I currently have blown-in insulation, that reaches the top of the attic floor. I was told by several insulation companies that I need a R value of at least 49, meaning, I need to add a good 12-18" ...
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2answers
169 views

Dryer isn't drying clothes. I've tried all of the common solutions (I think)

My wife and I just bought our first house. I think that we discovered that our dryer vent is going to require some regular maintenance to keep it clean and able to dry our clothes. When we moved in, ...
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2answers
129 views

Need a window exhaust fan with louvers that close automatically

I currently put a box fan in a window as an exhaust fan when I need to ventilate a room in my house. But when I turn the fan off, I need to remove the fan and close the window. I'd like to have a ...
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0answers
49 views

mold on exterior wall above kitchen exhaust grill

My kitchen cooker hood vents via aluminum pipes to the outside, terminated in a metal grille mounted on the exterior wall. Just above this grille is a horizontal concrete ledge, which is the bottom of ...
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3answers
630 views

How to properly ventilate a Mansard Roof?

I recently purchased a home with a Mansard roof, I had some roofers come to give quotes to replace the top (it is finished) and they all recommend adding ventilation (known issue with Mansard's). ...
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2answers
424 views

Can I vent my dryer 'up'?

We recently moved our dryer into the garage stacked on top of a washer. The easiest way to vent it was straight up about 6' into the attic, then a right turn in the attic 12' out the back of the ...
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0answers
41 views

Motorized vent for fresh air

I'm looking to set up a more optimized ventilation system in our house. Today we blow out air in the bathroom and have 3 passive vents letting fresh air in, distributed throughout the house. During ...
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0answers
240 views

Does a vaulted ceiling roof need venting?

I'm buying a house in Colorado, and the house has a vaulted (cathedral) ceiling such that both the plywood sheathing and the ceiling sheetrock are attached to opposite sides of the rafters, i.e. no ...
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2answers
600 views

What is the proper way to vent a dryer through a crawlspace?

I am selling a brick, pier and beam home that has a Dryer in the garage that currently vents into the crawlspace. I had run flex tubing through the crawls space to the crawlspace vent. The inspector ...
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1answer
67 views

dryer ventilation

I started renting a condo in Sacramento from a property management.the building was built in 1974. There has been some shorty upgrades by contractors hired by the property management. Moving in i ...
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1answer
340 views

I want to permanently remove and fill-in below grade windows in multi-family building. What's the risk?

I have a 5 family apartment building in NJ. There are 2 below grade window wells that protrude from the building and into the asphalt driveway. I want to fill these in permanently with concrete ...
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2answers
124 views

What under-eaves vents can I use to maximize attic airflow and minimize insect infiltration?

I live in Seattle. It doesn't snow here often. Winters are cold, but temps do not dip below 32 for long periods of time very often. I live in a small, one-level 950 sq. ft. house built in the 1950s. ...
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1answer
219 views

How to get fresh air to flat without letting noise in

My flat is at 4th floor just next to very noisy street (cars/trams); above my flat there's only roof (no other floors or attic). I have problems with fresh air inside because I try to keep my windows ...
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1answer
207 views

How to remove narrow metal soffit

Our 1954 home has very narrow soffits, with metal over them. The best solution I've come up with for adding soffit vents is 2 inch hockey puck style. I did a few several years ago and stopped. See ...
2
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1answer
114 views

Can I use a split tab switch for mains voltage and low voltage?

LeGrand (Pass & Seymour) make a multi-control single pole switch with a split tab TM8113WCC, which allows for the control of two independent circuits on a single yoke (one box). Code question: is ...
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1answer
169 views

Is my HVAC system unbalanced?

I bought a home back in August and the previous owner had a new 3-ton HVAC system installed. Basically right now the HVAC is located in the upstairs hallway, and the way the duct is set up is there ...
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2answers
75 views

Best way to stop boiler steam from entering attic

I have a cape cod. The boiler is in the basement and vents to the outside about a foot above ground level. I get a considerable amount of snow melt and ice buildup in the attic section directly ...
3
votes
1answer
52 views

How can I prevent my furnace vent from icing up and shutting off the furnace?

How do I keep my exhaust vent from icing up in the winter. We are in a new house with a HE Furnace in a pretty cold zone. It has iced up two times now and we are only in our 1st winter. Anything I can ...
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4answers
6k views

Do I need a vent fan in an interior laundry room?

I am renovating a few rooms including an existing laundry room. It currently has one exterior window and another openable window onto an existing mudroom (which also has exterior windows). After the ...
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1answer
39 views

Should I be concerned about respiratory hazard from leftover/lurking silica sand from abrasive blasting (sandblasting)?

I know the media itself is a respiratory hazard while blasting (I'm told the silica sand itself breaks apart from the blasting and becomes dust-like). The area will be ventilated. However, I worry ...
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2answers
2k views

How much heat loss through bathroom fan vent?

My master bathroom did not previously have bathroom fan, but I installed one and have had wonderful results with keeping the steam from building up and exhausting the moist air. I am using both a fan ...
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2answers
168 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 ...
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1answer
664 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 ...
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1answer
31 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 ...
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2answers
249 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 ...
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1answer
181 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 ...
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2answers
432 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
207 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 ...
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3answers
248 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 ...
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votes
1answer
181 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 ...
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2answers
274 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
2answers
318 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 ...
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1answer
140 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 ...
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1answer
312 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 ...
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4answers
6k 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 ...
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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 ...