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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2
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2answers
121 views

How do I get an exterior vent to stop frosting over in a cold Canadian winter?

We have a high-efficiency gas-fired hot water heater (in our a basement) that is vented to the outside of our house. When the weather gets below -30°C the vent has a tendency to frost-over. When ...
2
votes
1answer
140 views

How do I prevent my gable vents from clogging with ice?

This is the first time I have seen this happen in my 6+ years of owning my home. It is an older home (45+ years), but has gable vents on both ends (facing east and west). It has always vented well in ...
2
votes
1answer
155 views

What type of chimney liner and vent pipe are required for a wood stove?

I am working to rehabilitate an old chimney for use by a wood stove. There will be approximately 18 ft from the wall chimney socket (this is probably not the correct name for it) to the chimney top ...
1
vote
1answer
116 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
43 views

Are molds dangerous to health if they are not in my own apartment?

I need a help to decide if I will move out from this building because of mold and health risks. Is it dangerous to live in a buliding in which the hallway is full of mold? I've been reading about ...
0
votes
1answer
177 views

Air admittance valves on waste pipe with extraction

Just move into a new apartment which is on the upper floor of three. The bathrooms of each apartment are directly above one another. I believe that the exhaust vents of the bathrooms in the apartments ...
1
vote
0answers
19 views

How can I reduce the noise from an HE boiler vent?

I have a HE boiler that is direct vented out the side of my house on the neighbors side, they find the 'roar' of the exhaust to be very annoying. Have anyone tried troubleshooting these to ...
1
vote
0answers
497 views

How can I tell if my bathroom ceiling vent is working properly?

Seems to take the vent forever to clear shower vapor from room. I purchased a vent that had a good rating. It is vented to the outside. How do I know if it is working properly and actually venting to ...
1
vote
0answers
99 views

Is this the correct way to vent my roof?

We recently bought a 1950s vintage house with no soffits, i.e. no roof overhang. Thus there are no soffit vents in my attic, only a ridge vent and 2 gable vents, one with a powered fan. However, those ...
1
vote
0answers
251 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 ...
1
vote
0answers
382 views

Is it possible to retrofit an external kitchen fan in an existing house?

I have a 2-storey half duplex that was built in 2008. The kitchen (1st floor) has a range hood fan that exhausts to the side of the house through 8" aluminum duct. The outside vent is not directly ...
1
vote
0answers
606 views

Is it advisible to block a bathroom vent due to cigarette?

I live in an apartment, and there's cigarette smell coming from the bathroom vent (probably from a neighbour who smokes). I'm wondering is it advisable to block the bathroom vent to block the smoke ...
1
vote
0answers
541 views

How do I ventilate a bathroom through a small window?

I've got a very small bathroom without a vent fan. Since it is in a condo among a lot of others in a large building, a standard vent fan cannot be installed. However, I do have a small window and was ...
0
votes
0answers
16 views

Is my vent cap big enough for my vent hood?

I have installed a 900 CFM island vent hood. It works properly, but it doesn't vent as quickly as I would expect. The ducting is only 18" and straight out (and up) through the roof, so that's not ...
0
votes
0answers
157 views

Can I reuse an abandoned roof vent?

I have a house that has an old 8-10 inch diameter vent that used to be used as stove/oven vent. I think that newer gas ovens don't require venting like a water heater needs (ie they don't have a ...
0
votes
0answers
84 views

Why isn't the overrun timer working on my Vent-Axia silent fan?

I am trying to replace a bathroom ventilation fan with a Vent-Axia Silent Fan. It has an overrun timer, which is supposed to make it start when the bathroom light is turned on and turn off about 15 ...