Can I reduce dryer vent through basement wall?

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Can I reduce my 4" solid dryer vent pipe to a 3" at the outlet, my foundation has only 3 1/2 " opening between floor and concrete to cut through.

This picture shows where the vent to outside will go. To the right is an existing bath fan vent. I would like to place the dryer vent on the same wall.

dryer vent

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edited 3 hours ago

isherwood

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up vote
1
down vote

favorite

Can I reduce my 4" solid dryer vent pipe to a 3" at the outlet, my foundation has only 3 1/2 " opening between floor and concrete to cut through.

This picture shows where the vent to outside will go. To the right is an existing bath fan vent. I would like to place the dryer vent on the same wall.

dryer vent

share|improve this question

edited 3 hours ago

isherwood

42.9k453107

asked 4 hours ago

Cheryl

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

up vote
1
down vote

favorite

up vote
1
down vote

favorite

Can I reduce my 4" solid dryer vent pipe to a 3" at the outlet, my foundation has only 3 1/2 " opening between floor and concrete to cut through.

This picture shows where the vent to outside will go. To the right is an existing bath fan vent. I would like to place the dryer vent on the same wall.

dryer vent

share|improve this question

edited 3 hours ago

isherwood

42.9k453107

asked 4 hours ago

Cheryl

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

Can I reduce my 4" solid dryer vent pipe to a 3" at the outlet, my foundation has only 3 1/2 " opening between floor and concrete to cut through.

This picture shows where the vent to outside will go. To the right is an existing bath fan vent. I would like to place the dryer vent on the same wall.

dryer vent

dryer vent

share|improve this question

edited 3 hours ago

isherwood

42.9k453107

asked 4 hours ago

Cheryl

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 3 hours ago

isherwood

42.9k453107

asked 4 hours ago

Cheryl

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

share|improve this question

edited 3 hours ago

isherwood

42.9k453107

edited 3 hours ago

isherwood

42.9k453107

edited 3 hours ago

isherwood

42.9k453107

42.9k453107

asked 4 hours ago

Cheryl

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 4 hours ago

Cheryl

84

asked 4 hours ago

Cheryl

84

84

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

New contributor

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

Cheryl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

add a comment | 

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You can probably convert to a rectangular vent that equals the cross-sectional area of a 4" duct. You may have to get creative. The area of a 4" circle is about 12.5 inches square, so 3 by 5 would do, for example.

I would not reduce the area (as with a 3" round vent) as you'll increase backpressure and create a lint trap.

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edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
3
down vote



accepted

You can probably convert to a rectangular vent that equals the cross-sectional area of a 4" duct. You may have to get creative. The area of a 4" circle is about 12.5 inches square, so 3 by 5 would do, for example.

I would not reduce the area (as with a 3" round vent) as you'll increase backpressure and create a lint trap.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

add a comment | 

up vote
3
down vote



accepted

You can probably convert to a rectangular vent that equals the cross-sectional area of a 4" duct. You may have to get creative. The area of a 4" circle is about 12.5 inches square, so 3 by 5 would do, for example.

I would not reduce the area (as with a 3" round vent) as you'll increase backpressure and create a lint trap.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

add a comment | 

up vote
3
down vote



accepted

up vote
3
down vote



accepted

You can probably convert to a rectangular vent that equals the cross-sectional area of a 4" duct. You may have to get creative. The area of a 4" circle is about 12.5 inches square, so 3 by 5 would do, for example.

I would not reduce the area (as with a 3" round vent) as you'll increase backpressure and create a lint trap.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

You can probably convert to a rectangular vent that equals the cross-sectional area of a 4" duct. You may have to get creative. The area of a 4" circle is about 12.5 inches square, so 3 by 5 would do, for example.

I would not reduce the area (as with a 3" round vent) as you'll increase backpressure and create a lint trap.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

share|improve this answer

share|improve this answer

edited 3 hours ago

edited 3 hours ago

edited 3 hours ago

answered 4 hours ago

isherwood

42.9k453107

answered 4 hours ago

isherwood

42.9k453107

answered 4 hours ago

isherwood

42.9k453107

42.9k453107

add a comment | 

add a comment | 

Cheryl is a new contributor. Be nice, and check out our Code of Conduct.

 

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