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57 votes
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How do I fix this 30 ft (9 m) dryer vent abomination?

Move It! As already noted by some others, moving the dryer to the wall where the vent ends is a great idea. The location for a gas dryer needs three things: Vent - Absolutely perfect. While you're at ...
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22 votes
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Is it Ok to mount a bathroom extractor fan at floor level?

First off, you misunderstand the intention of the extractor fan. It is not to remove hot air. It is to remove moisture from the air, and that's done to help protect against mold and mildew buildup. ...
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21 votes

How do I fix this 30 ft (9 m) dryer vent abomination?

Electric. Heat pump based. Condensing. Dryer. Duct disposed off, vent sealed for good. Depending on where you are, it may be way cheaper (heat pumps are quite efficient) in terms of gas/electricity ...
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15 votes

How do I fix this 30 ft (9 m) dryer vent abomination?

Replace the unit I would replace the unit to a condenser type dryer. They produce water instead and require no vent. Some units put the water directly to the drain or you can use a tray you have to ...
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8 votes
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Bathroom Vent Fan Upgrade

You can install a reducer, but you'll cut your flow volume by an equal proportion: 28.3in2 - 7.1in2 = 21.2in2 (an area reduction of 75% when going from 6" to 3" duct) This will negate a significant ...
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  • 106k
8 votes
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Why are loop (Chicago) vents typically built with three elbows?

From the International Association of Plumbing and Mechanical Officials (IAPMO) "Uniform Codes Spotlight" archive from February 2018: The configuration of the return bend using 45 degree and 90 ...
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  • 1,084
7 votes

Why are loop (Chicago) vents typically built with three elbows?

There is no reason you need the three sections vs one 180 degree return piece other than you have copied in one of the oldest and most used plumbing pictures on the internet. I do my own plumbing ...
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6 votes
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How do I check bathroom plumbing vent?

Your vent, if it exists, should reach the roof (there are exceptions, as noted in comments). You can look at the roof for a short metal or plastic pipe sticking out, it may or may not have a cap. This ...
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6 votes

How do I connect these two pieces of dryer duct in my attic?

Long story short, you're going to want to figure out a way of connecting the ducting from the dryer to the ducting through the roof. If you don't, you're going to end up with warm, moist air feeding ...
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5 votes

Is it possible to move a vent from the floor to the wall without ducts?

A vent isn't hard to extend. Any decent contractor could extend your current vent to closet wall. I am assuming this is the outside of the closet too - you don't ever put a vent in the inside of a ...
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  • 46.2k
5 votes

Bathroom Vent Fan Upgrade

Let's back up here for just a second and note something You almost certainly don't need a 150CFM fan. So your original fan was a stock 50CFM (probably NuTone or one of its predecessors) that's a 4-...
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  • 20k
5 votes

how to vent an electric dryer when outdoors isn't option

The proper answer for this, and certainly the one the building was built for, is to use a condensing dryer. This is a special dryer with a dehumidifier built in, which then overboards the recovered ...
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5 votes

How do I fix this 30 ft (9 m) dryer vent abomination?

Going back to electric and moving to the other wall is probably the easiest. Getting power on that other wall for the dryer, if not already there, will probably be much easier for you as opposed to ...
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5 votes
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Multiple concentric vent kits

You're fine IFGC 503.8 is the governing Code passage here, and it sets no minimum spacing for direct-vent terminations from each other, just from features that could draw combustion gasses into room ...
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4 votes

venting dryer into unused lined chimney flue

If you check the dryer installation instructions, you likely will not find any specifications for venting thru the roof. It is generally not recommended. I know my dryer blows a decent amount of lint ...
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  • 10.9k
4 votes

Should vents protruding through the roof be protected from weather?

Vent pipes no, the pipes are supposed to the set so any rain that enters, drains down the same as any water that enters the pipe from the sinks, tubs, toilets etc. Intake pipes are only to take in ...
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  • 31.3k
4 votes

Toilet sits directly over sewer return -- what sort of venting?

There are those that still maintain that a toilet needs a vent. Take a look at this question here for one such opinion: Do I need to add a vent when moving a toilet drain across the bathroom? However, ...
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  • 19.3k
4 votes

Is an electric dryer's vent pipe a fire hazard when routed through the floor?

It's not a concern. Dryer exhaust might hit 200 degrees, but most have thermal fuses far below that. You'd need twice that and then some to start a fire. Heck, many dryers are vented through cheap ...
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  • 106k
4 votes
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Is the ventilation in my utility closet a construction mistake?

The furnace has the intake and exhaust of a sealed unit but the water heater is an old style open burner. The water heater requires the outside vent. The size of the vent is based on the BTU rating of ...
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  • 97.6k
4 votes

Venting Bathroom Exhaust Fan

A bathroom exhaust fan needs to be vented outside the home!. This sewer pipe is where the waste goes and will not provide a good or safe vent. Vents on the waste pipes prevent the water from being ...
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  • 97.6k
4 votes

How to cut round hole in aluminum soffit after installation

This old house has an excellent video on why the soffit location is bad, and how to vent through a common shingle roof. https://www.youtube.com/watch?v=PqrZWd_CQIE How to Vent a Bath Fan Through the ...
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  • 10.3k
4 votes

How do I fix this 30 ft (9 m) dryer vent abomination?

Not being next to the washer would be inconvenient, but the simplest option would be to move your drier to the wall where it vents through. Installing new plumbing on that wall would let you move the ...
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4 votes
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Is a condensing tankless heater that expels excess water outside also a dehumidifier?

The condensate from natural gas burning comes mainly from the burning. Methane is the primary component of gas, and it is chemically CH4. When burned, you have: ... a problem, because MathJax does not ...
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  • 1,272
4 votes

What prevents rain or snow from going down a concentric vent?

My tankless water heater (80% efficient, with stainless steel style vent) does indeed use a condensate drain in its venting system. This was required to comply with local codes and the follow the ...
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  • 41
3 votes

Can I vent a bathroom through the side of the house instead of the roof?

If you are referring to a vent for an exhaust fan in the bathroom, then the answer is yes. I recently purchased a new home and the bathroom needed a full remodel due to mold and water damage. There ...
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  • 41
3 votes

Can there be too many seams in a dryer vent pipe?

The number of seams is really not the issue. The length is, but this is probably a better solution than alternatives. When you put the pieces together, you should arrange that the downstream ...
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3 votes
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Attic flue vent pipe...asbestos? If so, what should I do?

Searching online using the phrase ""Transite flue pipe" leads to a large number of hits that indicate this type of pipe is for sure an asbestos cement pipe. It does need to be handled as a hazardous ...
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  • 61.5k
3 votes

Is it better to fill up the space between rafters with insulation, or put baffles on top and add soffit vents? (inland Los Angeles, cathedral ceiling)

For a similar situation, I'm considering an unvented cathedral ceiling (see references). The main reason to vent an attic is to prevent warm moist indoor air from contacting the roof framing and ...
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3 votes

Is it possible to move a vent from the floor to the wall without ducts?

According to this reference: http://www.greenbuildingadvisor.com/community/forum/building-code-questions/27872/stud-spaces-air-ducts using stud space as a supply duct is not permitted.
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  • 990
3 votes

Why is my furnace blowing hot air outside?

All gas furnaces require a flue to exhaust carbon monoxide outdoors, the reason modern units require a fan to do it is due to the circuitous design of modern heat exchangers that extract more heat ...
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