Lol, found many hard 90’s at my mom’s townhouse. It was a challenge to clean and inspect for her! Good reminder that my theory was right just like your recommendation.
I know this is an older video but I'm hoping you can help me. We just moved into a home a couple months ago (built in 2007) and decided to have the dryer ducts inspected and cleaned. Found out the duct had completely disconnected in the attic space between the two floors and was blowing lint inside the attic. Not only that but because of the location of the laundry room being in the center of the main floor, the duct goes up and around an upstairs room then vents out the roof. This creates several 90 degree elbows before exiting. It's a terrible design but we can't see any other options to reroute it unless we vent into the garage. Would that be against code to do that? The tech cleaned it out and reconnected everything the best he could with tape and for now have plans to reinspect it next year to make sure it's holding together and to do another clean out. Do you have any other suggestions besides moving the laundry room to an outside wall? Unfortunately we're on a slab foundation.
@@Punkydoodle007 I would have to see the floor plan to identify alternate routing. One solution for the 90 degree elbows is to replace them with “dryer ell” long sweep 90s that do not have the same equivalent link penalties that hard 90s have.
On my modular 2007 home ( second owner) I position the dryer almost against the outside wall, vent turns 90 degree DOWN at about 45 degrees and another 90 degrees out the wall! By ducting downwards, when the dryer is offline cold air can't drift in and migrate up and into the dryer. Cold air sinks, warm air rises. Been doing this in a couple friends houses for 10+ years, no issues. Love the channel
Previous owner of my house vented into the floor joists directly below the unit. 😅 I had to drill a 13" long hole through the stone block exterior wall to create a straight shot out the back of the dryer.
Many times you do not have an option the way a house is engineered.... One 90 bend in an entire run is just fine... lint collection is always going to occur and regular cleanout is recommended no matter what. I see no issue here.
This may be true in an existing home but we must always account for the dryer duct run in our planning, engineering, and design phase. The building code limits a dryer duct run to 35 feet with no fittings. Each 90 degree elbow reduces this by 5 feet. The long sweep 90 shown as an alternative in the video does not have the 5 foot penalty and is smooth on the interior to minimize trapping lint. As noted in this video, there is likely no issue with this particular installation, other than lint buildup in the hard 90 elbow. Add a few more elbows, and you have a definite issue.
@@KodiakEL correct as noted in the video - should be no major issues. Trying to point out that there are better, readily available alternatives to the way we’ve always done things!
Dryer vent box should be code in this day and age. I have yet to find a exterior vent that is effective in keep the cold out, the current versions with flaps don’t keep cold out.
Agreed! The dampers on the exterior terminations aren't very good at keeping out the cold air. This can be true of some of the interior dampers as well. We have found that the interior dampers on Panasonic fans are pretty good at sealing out the cold.
@@AddisonHomesi can say the same for broan bathroom exhaust fans. The cheap 70 cfm unit has a damper that does a decent job at stopping drafts In my experience. It’s not perfect on super windy days however as the flap is constantly opening and closing.
If the laundry room is on an outside wall, straight out would be best. Often the laundry room is not on an outside wall and we have to go up or down with the dryer vent ducting
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Glad my house has a dryer box. Dryer jack roof vents are a good option for venting dryer through the roof as well.
You're definitely fortunate! The Dryer Box / Dryer Jack / Dryer Ell folks make some great products!
Lol, found many hard 90’s at my mom’s townhouse. It was a challenge to clean and inspect for her! Good reminder that my theory was right just like your recommendation.
Awesome! Glad it helped!
I know this is an older video but I'm hoping you can help me. We just moved into a home a couple months ago (built in 2007) and decided to have the dryer ducts inspected and cleaned. Found out the duct had completely disconnected in the attic space between the two floors and was blowing lint inside the attic. Not only that but because of the location of the laundry room being in the center of the main floor, the duct goes up and around an upstairs room then vents out the roof. This creates several 90 degree elbows before exiting. It's a terrible design but we can't see any other options to reroute it unless we vent into the garage. Would that be against code to do that? The tech cleaned it out and reconnected everything the best he could with tape and for now have plans to reinspect it next year to make sure it's holding together and to do another clean out. Do you have any other suggestions besides moving the laundry room to an outside wall? Unfortunately we're on a slab foundation.
@@Punkydoodle007 I would have to see the floor plan to identify alternate routing.
One solution for the 90 degree elbows is to replace them with “dryer ell” long sweep 90s that do not have the same equivalent link penalties that hard 90s have.
Thank you. I will look into that.@@AddisonHomes
On my modular 2007 home ( second owner) I position the dryer almost against the outside wall, vent turns 90 degree DOWN at about 45 degrees and another 90 degrees out the wall!
By ducting downwards, when the dryer is offline cold air can't drift in and migrate up and into the dryer.
Cold air sinks, warm air rises.
Been doing this in a couple friends houses for 10+ years, no issues.
Love the channel
Great strategy! Glad you enjoy the channel!
Previous owner of my house vented into the floor joists directly below the unit. 😅
I had to drill a 13" long hole through the stone block exterior wall to create a straight shot out the back of the dryer.
@@mikemojica I’ve seen it many times!
Great video and one of the worst tape jobs I’ve ever seen on that elbow 😂
Unfortunately it is too common!
the builder of my home put in like 5 90s and the connection at the bottom is wonky and at a weird angle
Unfortunately, many HVAC installers and builders don't understand the implications of poorly installed ductwork.
Wouldn’t buy it. Won’t buy any house unless the dryer is directly on an outside wall. Makes no sense to vent up and around and out.
Many times you do not have an option the way a house is engineered.... One 90 bend in an entire run is just fine... lint collection is always going to occur and regular cleanout is recommended no matter what. I see no issue here.
This may be true in an existing home but we must always account for the dryer duct run in our planning, engineering, and design phase. The building code limits a dryer duct run to 35 feet with no fittings. Each 90 degree elbow reduces this by 5 feet. The long sweep 90 shown as an alternative in the video does not have the 5 foot penalty and is smooth on the interior to minimize trapping lint. As noted in this video, there is likely no issue with this particular installation, other than lint buildup in the hard 90 elbow. Add a few more elbows, and you have a definite issue.
@@AddisonHomes clearly not 35 feet. Agreed otherwise.
@@KodiakEL correct as noted in the video - should be no major issues. Trying to point out that there are better, readily available alternatives to the way we’ve always done things!
Dryer vent box should be code in this day and age. I have yet to find a exterior vent that is effective in keep the cold out, the current versions with flaps don’t keep cold out.
Agreed! The dampers on the exterior terminations aren't very good at keeping out the cold air. This can be true of some of the interior dampers as well. We have found that the interior dampers on Panasonic fans are pretty good at sealing out the cold.
@@AddisonHomesi can say the same for broan bathroom exhaust fans. The cheap 70 cfm unit has a damper that does a decent job at stopping drafts In my experience. It’s not perfect on super windy days however as the flap is constantly opening and closing.
Why don’t you just go straight out the wall there’s a outside wall why go to the attic another problem?
If the laundry room is on an outside wall, straight out would be best. Often the laundry room is not on an outside wall and we have to go up or down with the dryer vent ducting