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Questions tagged [exhaust-vent]

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21 questions with no upvoted or accepted answers
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1answer
323 views

alternative roof vents

Local building code requires a roof vent that is less than ten feet away from an operating skylight to extend a minimum of three feet above the skylight. Is there an alternative venting system, other ...
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40 views

Concerns with installing 4“ Dryer Booster Fan into 7” duct

Our new-to-us home was built in 1850, so there's been a lot of oddball things done to it's guts over time. One of these is the dryer vent duct work that looks to have been installed sometime in the ...
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43 views

unique ? about venting tankless water header

I am installing a tankless water heater at the house. My question is unique because I can not find a reference anywhere in the code and the installation manual about where to place my exhaust vent. I ...
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34 views

Do I need to replace the water heater vent pipes if they have salt corrosion?

I was in my attic improving the insulation and I found that my exhaust pipe for the water heater has salt/corrosion all around the seams. Based on what I found, this is either caused by inadequate ...
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0answers
64 views

How do I calculate fan size for a single room exhaust system to reach a desired cfm when restricted to specific duct size/route?

I am wanting to exhaust a sealed room (except for air intake and exhaust). The room is 512 ft3, and due to positioning, orientation, and existing construction, I am restricted to using 6" flexible ...
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126 views

Furnace draft inducer switch tripping

I have an older furnace and a brand new natural gas instant water heater that I installed. I only start this way because the furnace had one thing break last year, so I'm not sure if things on it are ...
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157 views

Can inline range hood exhaust fan damper be safely/legally installed,1st floor of 2 story apt

I live in a 2 story apartment. Whenever the tenants directly upstairs turn on their range hood exhaust fan, I get whatever they are cooking/burning in my apartment. I have pulled down the range hood ...
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0answers
57 views

Can mold growth be removed and cleaned up in a two-story apartment building successfully?

I live in an apartment building that has 24 units which all the bathrooms vent into the hollow walls or their neighbors bathrooms upstairs. (so in their ceiling, the smell and moisture comes out ...
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0answers
285 views

Backdraft issue w/bathroom exhaust and dryer connected to same air outlet

I live in a condo where a dryer and bathroom exhaust both connect into a Y connector that flows into the same pipe and into the building air shaft. I understand that these two appliances on the same ...
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0answers
346 views

Gas furnace vent clearance from parallel PVC radon vent

I have a hallow wall on my main floor which carries my gas furnace vent up thru the attic and out the roof. This picture is from the basement looking up at the vent and as you can see, the radon ...
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90 views

Sidewall venting for natural gas appliance

My natural gas hot water tank still uses black (ABS) plastic vents. Due to a building code change, these need to be replaced with System 636 pipes. The current abs plastic pipes go to the roof. I don'...
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2k 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 ...
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1answer
46 views

How to retrofit existing kitchen exhaust fan

I'm remodeling a kitchen that is circa 1940's. In the kitchen is an exhaust fan that sits inside a 3.25x10 duct. I would like to keep an exhaust fan in this location and re-use the existing duct, ...
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55 views

HVAC Exhaust Routing Question

Just wondering if I could get some advice on the optimal way to route the HVAC Exhaust piping. Enbridge replaced the supports underground and before they turned the gas back on they did an inspection ...
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0answers
30 views

can I vent a bathroom vent through an existing gooseneck?

Can I vent a bathroom vent through an existing gooseneck attic vent? I already have another gooseneck and two gables along with soft vents.
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26 views

Codes for range hood exterior wall locations?

What are code requirements for location of residential range hood exhaust on external wall relative to windows?
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146 views

Best way to shield microwave and cabinets from stovetop steam

We recently installed new cabinets in our kitchen and we also had our microwave vented to the outside. From this two problems have arisen. the Samsung microwave now sporadically gives a C-F0 error....
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2k views

Prevent cold air from coming in through bathroom vent

I am considering building a vent with a fan in my upstairs bathroom that would exit out of the roof. Since the bathroom is in the center of the house it cannot easily be vented to the side of the ...
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1answer
2k views

Extend dryer termination away from condensing unit

How can I extend my dryer's exhaust vent away from my A.C. condensing unit using the existing outlet? It currently looks like the picture below. I don't know if the vent going through the wall is ...
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0answers
1k views

Connecting dryer vent in new window

We just had some old windows replaced with glass block in the basement. The installers added a window with an attachment to vent the clothes dryer but, of course, it's different to the one in the old ...
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0answers
65 views

How to build exhaust system?

I light candles frequently in room, and I wanted to prevent candle soot from sticking to the walls etc. How about I install an exhaust system in that room? What other options do I have? How powerful ...