On Nov 3, 2:21*pm, DerbyDad03 wrote:
I have a Goodman 90+ furnace with a 3" PVC output pipe, which ends in
vertical T.

Here's a side view, with W being the wall:

W
W * * * |
W-------|
W * * * |
W

I've always thought that it makes more noise than it should when the
furnace is on. It's sounds like a steam pipe at a factory.

If I were to compare it to anything, I'd say it is 3 - 4 times louder
than my AC compressor.

Is that normal?

Mine is noisy, but I had no need to quiet it. Resonances can make
things worse,
and sharp exit point will make it worse. You can put a muffler on it.
Why vertical T ?
Odd thing people do. Put your hand over the top exit and see if
it improves sound. A muffler is made with a larger pipe, preferably
with a bend, with a lining of fiberglass
around the perimeter then a reduction in pipe size. You want the exit
to be smaller
than the main pipe size. You have TWICE the exit size as your main
pipe.

On Nov 5, 10:24*am, zek wrote:
On Nov 3, 2:21*pm, DerbyDad03 wrote:



I have a Goodman 90+ furnace with a 3" PVC output pipe, which ends in
vertical T.

Here's a side view, with W being the wall:

W
W * * * |
W-------|
W * * * |
W

I've always thought that it makes more noise than it should when the
furnace is on. It's sounds like a steam pipe at a factory.

If I were to compare it to anything, I'd say it is 3 - 4 times louder
than my AC compressor.

Is that normal?

Mine is noisy, but I had no need to quiet it. Resonances can make
things worse,
and sharp exit point will make it worse. You can put a muffler on it.
Why *vertical T ?
Odd thing people do. Put your hand over the top exit and see if
it improves sound. A muffler is made with a larger pipe, preferably
with a bend, with a lining of fiberglass
around the perimeter then a reduction in pipe size. You want the exit
to be smaller
than the main pipe size. You have TWICE the exit size *as your main
pipe.

I am waiting for a reply ????

On Nov 8, 10:11*am, zek wrote:
On Nov 5, 10:24*am, zek wrote:





On Nov 3, 2:21*pm, DerbyDad03 wrote:

I have a Goodman 90+ furnace with a 3" PVC output pipe, which ends in
vertical T.

Here's a side view, with W being the wall:

W
W * * * |
W-------|
W * * * |
W

I've always thought that it makes more noise than it should when the
furnace is on. It's sounds like a steam pipe at a factory.

If I were to compare it to anything, I'd say it is 3 - 4 times louder
than my AC compressor.

Is that normal?

Mine is noisy, but I had no need to quiet it. Resonances can make
things worse,
and sharp exit point will make it worse. You can put a muffler on it.
Why *vertical T ?
Odd thing people do. Put your hand over the top exit and see if
it improves sound. A muffler is made with a larger pipe, preferably
with a bend, with a lining of fiberglass
around the perimeter then a reduction in pipe size. You want the exit
to be smaller
than the main pipe size. You have TWICE the exit size *as your main
pipe.

I am waiting for a reply ????- Hide quoted text -

- Show quoted text -

"I am waiting for a reply ????"

Since that's appears to be a question, I'll answer.

Yes, you are waiting for a reply.

On Nov 8, 2:13*pm, DerbyDad03 wrote:
On Nov 8, 10:11*am, zek wrote:



On Nov 5, 10:24*am, zek wrote:

On Nov 3, 2:21*pm, DerbyDad03 wrote:

I have a Goodman 90+ furnace with a 3" PVC output pipe, which ends in
vertical T.

Here's a side view, with W being the wall:

W
W * * * |
W-------|
W * * * |
W

I've always thought that it makes more noise than it should when the
furnace is on. It's sounds like a steam pipe at a factory.

If I were to compare it to anything, I'd say it is 3 - 4 times louder
than my AC compressor.

Is that normal?

Mine is noisy, but I had no need to quiet it. Resonances can make
things worse,
and sharp exit point will make it worse. You can put a muffler on it.
Why *vertical T ?
Odd thing people do. Put your hand over the top exit and see if
it improves sound. A muffler is made with a larger pipe, preferably
with a bend, with a lining of fiberglass
around the perimeter then a reduction in pipe size. You want the exit
to be smaller
than the main pipe size. You have TWICE the exit size *as your main
pipe.

I am waiting for a reply ????- Hide quoted text -

- Show quoted text -

"I am waiting for a reply ????"

Since that's appears to be a question, I'll answer.

Yes, you are waiting for a reply.

Did it make more or less noise ??

Did you do anything I said ??

Are you there ??

On Nov 8, 2:46*pm, zek wrote:
On Nov 8, 2:13*pm, DerbyDad03 wrote:



On Nov 8, 10:11*am, zek wrote:

On Nov 5, 10:24*am, zek wrote:

On Nov 3, 2:21*pm, DerbyDad03 wrote:

I have a Goodman 90+ furnace with a 3" PVC output pipe, which ends in
vertical T.

Here's a side view, with W being the wall:

W
W * * * |
W-------|
W * * * |
W

I've always thought that it makes more noise than it should when the
furnace is on. It's sounds like a steam pipe at a factory.

If I were to compare it to anything, I'd say it is 3 - 4 times louder
than my AC compressor.

Is that normal?

Mine is noisy, but I had no need to quiet it. Resonances can make
things worse,
and sharp exit point will make it worse. You can put a muffler on it.