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.
424
questions
0
votes
2
answers
25
views
Is the gap between the sheathing and header on this wall functional?
I am insulating my garage. This exterior wall's sheathing stops a few inches from the header. The gray strip is metal flashing. Exterior to that is Vinyl siding. Does stopping the sheathing below the ...
0
votes
1
answer
28
views
Will solar fans go hand-in-hand with ridge vents and whole house fans?
I have ridge vents but I’m wanting to add a whole house fan and a solar attic fan.
- 1
0
votes
1
answer
23
views
Distance Between Bath and Dryer Vents in Multi-family Residential Buildings [closed]
Is there a min. required distance between bath and dryer vents in multi-family residential buildings?
0
votes
1
answer
64
views
How to get rid of fog / odor in a bathroom without windows or an extractor fan?
The previous owners decided to cheap out and leave our suite bathroom with passive ventilation. There doesn't appear to be any wiring either, so adding a circuit would cost a lot of money and is a ...
- 11
0
votes
1
answer
22
views
Need Help Balancing Attic Ventilation
I live on a small remote island and I'm building a cabin out of what once was a barn. My soffits are plywood with a 2.25" diameter hole in the center of each 16" OC roof truss. This has ...
- 1
1
vote
1
answer
33
views
soffit vents: better to have more, smaller-size vents or fewer, larger-size vents are okay?
My 120-year-old house has no soffit vents and 2 passive roof vents a couple feet below the ridge line (no ridge vents). I want to add soffit vents in the wood soffits to provide more airflow because ...
- 11
2
votes
2
answers
69
views
Does a vaulted ceiling with air gap above insulation require ventilation?
We are in process of re-insulating our roof by removing roofing, decking and accessing the cavity between rafters from above. The roofer told us initially that the rafters in the vaulted ceiling areas ...
- 21
0
votes
0
answers
26
views
Missing rafter baffles
My side attic gets super hot in summer and the room next to it is about six degrees warmer than other rooms. I see rafter baffles/ vents missing where the wall separating the room and the attic meets ...
0
votes
0
answers
38
views
Should there be a roof vent above electric furnace/heat pump?
I have a manufactured home with a heat pump and electric furnace. Above that is a vent to the roof with an insulated duct freely hanging and unattached. Should that be there? Would it be better for ...
0
votes
0
answers
37
views
How to add intake vent to an attic of a hip roof without any eves?
My house has a hip roof with no gables or eaves. We have a ridge vent but no intakes. I'd like to install intakes to improve air flow and ventilation. I've seen a lot of on-roof vent products but they ...
- 153
0
votes
1
answer
37
views
How do I figure out my attic ventilation CFM - california fire safe vents
I'm looking to install a whole house fan for my 1700sqft house in northern CA. The install doesn't seem too complicated, but I don't know how to calculate the total amount of ventilation I have in my ...
0
votes
2
answers
97
views
Possible to install a mini-split condenser inside-ish?
Trying to install a multi-zone mini-split heat pump system in a small condo that does not have any accessible outdoor space* for condenser unit, however in the region jalousie windows are common and ...
7
votes
1
answer
874
views
How can I ventilate my bomb shelter?
One of the 'quirks' of local public housing is that it comes with an 'ensuite' bomb shelter - basically a room of reinforced concrete with a pair of ventilation holes. I should be able to get plug in/...
- 665
0
votes
1
answer
43
views
Installing an exhaust fan to attic to cool house
No AC in house, No option to get one. I've been getting by with the usual tricks, but I think I may be onto a good idea and I'd appreciate some vetting. My attic has a drop tile entry, and I am ...
2
votes
2
answers
52
views
Garage Door Insulation vs Ventilation Grill
I am located in Houston, TX and so you can imagine how hot and humid it is right now in the summer. I live in a 3 story townhome style house with an attached garage. And another thing is that I also ...
- 21
0
votes
1
answer
39
views
Trying to replace the bathroom exhaust fan with a new fan and heater. How do I go about it from where I am now?
I have small whole bathroom with an older ventilator fan that has a heater with it. Unfortunately it's dead altogether so basically I have to replace the whole thing and so far have removed the ...
0
votes
0
answers
25
views
Range Hood Pre-Instalation Questions
Is there any way to figure out if my hood vent is circular or rectangular before taking down the old hood?
Album link
New hood (click for fullsize)
New hood (click for fullsize)
Old hood (click for ...
0
votes
1
answer
68
views
To add soffits vents or not
I am in the process of getting a new roof and the roofer suggested that I should add soffit vents. This is a 1970s era home that has large gables on the sides. Please note on the higher level of the ...
- 1
2
votes
1
answer
64
views
Insulating/AC efficiency improvements
We moved into this house late last year. It is a 1992 cape style brick house.
In short, our upstairs is miserable sitting in the mid 80s with the upstairs unit running from 11am-10pm.
After doing some ...
- 21
0
votes
1
answer
557
views
Venting a portable air conditioner to bathroom vent duct in an apartment
I am wondering whether it is ok to vent the hot air from a portable air conditioner to the same duct where the bathroom air vent is in an apartment considering that the apartment block removes the ...
- 125
0
votes
0
answers
13
views
Bathroom Ventilation Leaking
My ceiling leaks when it rains and it’s right where my bathrooms venting system is. My bathroom vents through a piping system in the attic and then out through the roof. The pipe that sticks of the ...
- 1
0
votes
0
answers
42
views
Remove and seal up old air vents
I recently bought an apartment and have now realised that there are 4 old air vents in the flat that let cold air and noise in. The flat is right outside a restaurant and a pub and it gets super noisy ...
- 1
0
votes
3
answers
66
views
Alternate heat recovery systems upstairs and downstairs
I'm looking to increase the ventilation in my house by a little bit to compensate for measures we're using to reduce unintentional ventilation (blocking draughts). I don't need and can't afford a ...
4
votes
2
answers
308
views
Why is my attic hotter after venting was updated?
I had my roof replaced last year and I am now seeing consistent temperatures in the attic that exceed 40 degrees over the outside temperature. For example, it was 62°F the other day and I had 108.5°F ...
- 41
0
votes
1
answer
81
views
Air circulation with soffit vents but no ridge vents
Ranch 1959 home. Soffit vents present but no ridgevents. 75% of ground floor airsealed in attic. Home in GA.
I plan on re-roofing the first chance I get which may not be until next year. I'm not sure ...
- 11
0
votes
0
answers
57
views
What is the best way to cool a vaulted ceiling in a marine tropical environment?
A house I am working on has vaulted ceilings with no insulation or ventilation, so the rooms get very very hot during mid-day to afternoon, especially in the summer. The house has a white standing ...
- 101
1
vote
2
answers
128
views
Will exhaust fans effectively remove moisture from my crawl space? [duplicate]
This is a highly debated / discussed topic, but pretty much all of it based on parts of the country with relatively very high humidity.
I live in San Diego, where humidity is moderate most of the year ...
- 123
3
votes
1
answer
249
views
Issues with portable A/C exhaust into ventilation system?
I live in the UK (where air conditioning units, and thought for where they'd go, is very uncommon in homes), and where the temperature in summer is increasing every year. I also live in an apartment ...
- 143
2
votes
1
answer
51
views
What door is recommended when I want to noise dampen my furnace room?
Our basement is being renovated. Aside from the furnace room, it will have a mother-in-law suite, a common area, a bathroom, and another bedroom. Our bedrooms, which are next to the furnace room, are ...
0
votes
0
answers
83
views
Question about air sealing soffit/eave area for bugs and temperature
I have a 2006 house, which is not a great vintage, but generally very solid. In the rumpus room above my garage, there are two knee-wall closets. Despite having ample fiberglass insulation, these ...
- 21
1
vote
2
answers
177
views
Likely cause for leaking ventilation fan
My roof has two DX11VSR ventilation fans that were installed about a year ago.
I have had repeated issues where rainwater gets into the ventilation ducts attached to these fans and then leaks through ...
- 177
0
votes
0
answers
124
views
I have a gooseneck vent on my roof connected to nothing. Im told the purpose of the gooseneck is for attic exhaust ventilation. Is that correct?
Condominium development. ALL or most a/C units cannot keep 1220 square ft cool. I believe it is due to the only exhaust vent for attic is the current gooseneck vent that is sitting on the roof. Going ...
- 1
2
votes
1
answer
60
views
How to prevent pests from entering an air inlet?
The mesh grate on the vent hood at my local big box store is only useful for keeping out birds and the like. I'm tempted to wrap the whole thing in window screen but that would likely reduce air flow ...
- 319
1
vote
0
answers
47
views
Positive Input Ventilation (PIV) suitability for loft with high relative humidity
I live in the UK in a cold 1890s stone walled house which has a condensation issue (partly brought on by lifestyle choice and party due to previous "remedial" works that limit the natural ...
- 169
1
vote
2
answers
220
views
Move/replace loud range hood fan with fan on exterior of home
I have a natural gas range and a range hood with a fan that I find to be too loud even on the lowest setting.
The wall that the range hood is mounted to is an exterior wall, and I can see an exhaust ...
- 111
1
vote
1
answer
72
views
How can I mount a vent louver to a partially obstructed round duct?
I need to install a wall vent in my kitchen. The problem is that the hole is not round! Do I cut a plastic vent or what type of wall vent do I install? Thanks for any tips!
- 11
0
votes
0
answers
163
views
Is ridge vent wrongly installed or damaged?
We recently had a roofing company do a subpar job installing a new roof. I noticed that the ridge vent isn't completely flush with the shingles (plastic wavy from left to right).
Question :
Is this ...
1
vote
1
answer
171
views
Should I put a Turbine Vent in a Quonset Hut [closed]
I have a Q-Style Quonset Hut in eastern Canada where it gets quite cold in the winter time.
We have that white batton style insulation pinned to the walls but I know the building isn't ventilated ...
1
vote
2
answers
77
views
What are these vents?
Hi I have some vents I'm wondering about their functions/significance.
There are these outdoor vents, that I see called 'dryer vents' online. But I have only one of these connected to the dryer. ...
- 11
0
votes
1
answer
184
views
Can I use a chimney exhaust fan as a whole house fan? [closed]
I would like to install a whole-house fan in my house but want to avoid putting an unsightly fan in my living room (the only place it could reasonably be installed). I have a traditional brick ...
- 1
2
votes
0
answers
101
views
Better to reverse the intake/exhaust on my HRV? [closed]
I bought a house with an HRV (Heat Recovery Ventilation). The air intake for it is in a closed compartment under a staircase outside the house, so any air going in first has to go through small gaps ...
- 263
0
votes
1
answer
168
views
Is a fully vented exhaust fan required for bathrooms in Virginia?
Lurking for years so thanks for all the great info!
In our master bathroom there is a small water closet that just has the toilet (about 6' x 3'). The WC and the tub area both have exhaust fans that ...
- 11
0
votes
4
answers
226
views
Are there (portable) AC units that also ventillate? [closed]
If I understand correctly, (portable) AC units like this one take inside air, cool it and push it back inside, and similarly take outside air, warm it and push it back outside.
Afaik, This means that ...
- 101
0
votes
0
answers
69
views
How do I fix the tempertature differences between 3 floors in my house?
In my ~5000 square foot house, the finished basement is very cold, A/C set point stays spot on the main/ground level at 76F, but both upper loft areas 80-84 on hot days!
It is a full height 2 story ...
- 1
0
votes
0
answers
60
views
HVAC and water heater help
I need help deciding what to do in my home. We have a small closet upstairs that contains our furnace and water heater. The air conditioner currently installed is not working and has been turned off ...
0
votes
2
answers
186
views
What are these covered ceiling vents in Arizona residence?
What is the purpose of these 1-foot-square vents in the ceiling, which have a loose thin sheet of some white board on top of them?
These are in most rooms in a 50-year-old single-story residence in ...
- 2,577
0
votes
2
answers
45
views
Noisy ventilation when cold outside
Odd question from one that understands nothing about airflow, but has been obsessing over an issue for a while.
I live in a cold area, and when it's around F -4 (or C -20) or colder outside the noise ...
2
votes
0
answers
101
views
Crawl Space Encapsulation: How to deal with the "Chamber of Secrets?"
I have a south Louisiana home built in the 1950's with a vented crawl space. In the 70's, a den was added with a slab on grade foundation. In this addition, the back porch was converted into a ...
- 21
0
votes
3
answers
52
views
Gas burner periodically stopping with blocked vent error
We are working with our installer on this issue but would like more input. He suspects negative air pressure in the house
This is a gas burner installed in a room with all inside walls - center of a ...
- 1
0
votes
1
answer
226
views
Minimum floor fan CFM to push air from basement to cool down the main floor
Temperature in the basement of my home is consistently 6-7 degrees lower than in the main floor. I would like to circulate cold air from the basement to the main floor to cool it down during hot days ...
- 275