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OT plumbers, contractors, and men who use tool belts. Water heater vent question

Posted on 12/18/15 at 9:25 am
Posted by LSU alum wannabe
Katy, TX
Member since Jan 2004
27005 posts
Posted on 12/18/15 at 9:25 am
We have an older home (mid 80s). Water heater is in attic. Putting Christmas crap in attic and removing some I notice the pipe from the exhaust vent has fallen. Basically venting air into our attic. I am typing this so we are not dead which is a plus.

My questions....

How dangerous is this? I know CO is being vented from heater, but the pipe is still open to the outside? Meaning the middle section of this pipes span has fallen. There is still a hole for gas to escape as well as our attic ventilation (soffit setup).

Reason IMO this is not a DIY job is that I am not a DIY guy and this pipe portion sits above the portion of our ceiling that is vaulted. If I our my dad were to fall it's about 16' to the floor through ceiling. Every contractor who has been in my attic laughs or curses about the layout. And these are people that know what they are doing.

It needs to be fixed but how quickly? Our CO detectors are not going off and as I have mentioned, we are alive so "we are venting"(Apollo 13).

How pricey of a job is this? Houston/Katy area?

Thanks in advance.
Posted by whit
Baton Rouge
Member since Sep 2010
10999 posts
Posted on 12/18/15 at 9:32 am to
That's a relatively cheap fix. Get a plumber to do a quick house call. Can't imagine it being more than $200ish. I just had one vented through the roof with shingle repair. It was about $275
Posted by NYNolaguy1
Member since May 2011
20898 posts
Posted on 12/18/15 at 9:34 am to
I wouldn't mess with CO. I'd get it fixed ASAP, and close the gas valve and turn off the water heater in the meantime.

Not a plumber, just my .02.
Posted by LSU alum wannabe
Katy, TX
Member since Jan 2004
27005 posts
Posted on 12/18/15 at 9:43 am to
quote:

I just had one vented through the roof with shingle repair. It was about $275


Already have the vent through the roof and from the heater. It's just the middle piece. Don't know if that makes it much cheaper. But I do want it done right and not jacked up. So that's what my Dave Ramsey snowball plan emergency fund is there for.
Posted by cave canem
pullarius dominus
Member since Oct 2012
12186 posts
Posted on 12/18/15 at 9:43 am to
The moisture is going to be a far bigger threat than the CO. You are getting primed for a mold explosion due to condensation. JMHO

Posted by VetteGuy
Member since Feb 2008
28193 posts
Posted on 12/18/15 at 9:44 am to
quote:

I wouldn't mess with CO. I'd get it fixed ASAP, and close the gas valve and turn off the water heater in the meantime.
Posted by LSU alum wannabe
Katy, TX
Member since Jan 2004
27005 posts
Posted on 12/18/15 at 9:50 am to
Ok. Thanks for replies. I'm not that cheap. It has to be fixed, and will, but will CO not rise? There is nothing above my attic. It is not a 1/2 attic either with a room that is lateral to the attic?

Young guys out there heed these threads. If you have a nice apartment that you enjoy, stay in it.

This is what every old dude who says with a sarcastic chuckle, "Livin' the dream" is talking about.
Posted by cave canem
pullarius dominus
Member since Oct 2012
12186 posts
Posted on 12/18/15 at 10:00 am to
I would be willing to bet you can repair it in less than 5 min. Lively the pipe was just knocked out of place by you/someone moving something around. It most likely will just snap back together, should just be very thin wall galvanized tin tubing.

Unless there is some issue present your heater should not be producing CO, the vent is a precaution.

Think of all the gas heaters in homes without vents.
Posted by cave canem
pullarius dominus
Member since Oct 2012
12186 posts
Posted on 12/18/15 at 10:04 am to
quote:

but will CO not rise


Again a proper flame does not create CO, other wise every single person with a space heater or vent free gas logs would be dead.

You need to fix this yes,but it is not an emergency though and you can do it yourself easily.
Posted by Cdawg
TigerFred's Living Room
Member since Sep 2003
59532 posts
Posted on 12/18/15 at 10:08 am to
quote:

Meaning the middle section of this pipes span has fallen. There is still a hole for gas to escape as well as our attic ventilation

Just put it back up and duct tape it. it's just venting.

I've seen in older homes that use a "natural" venting system where it's open about 3-6 inches above the water heater and naturally rises to the vent pipe.

quote:

How pricey of a job is this? Houston/Katy area?

Give me $250 and I'll be there in 20 minutes.
Posted by LSU alum wannabe
Katy, TX
Member since Jan 2004
27005 posts
Posted on 12/18/15 at 10:09 am to
Cool. Thanks.

Other than water not being hot, how would I know if my gas were not burning properly? Smell of gas? Meaning NG. I know CO has no odor.
Posted by tigeraddict
Baton Rouge
Member since Mar 2007
11812 posts
Posted on 12/18/15 at 10:12 am to
This is an easy DIY project. All u need to do is get the flue piping from Lowes/Homedepot, or hit one of the local plumbing supply houses (coburns/LCR, ect). Some self tapping sheetmetal screws, and duct sealeat for the seams and screw taps

Or if you really dont want to DIY, call a local sheetmetal shop. Cheaper then a plumber, and their craft anyways
Posted by VetteGuy
Member since Feb 2008
28193 posts
Posted on 12/18/15 at 10:15 am to
See below for better info
This post was edited on 12/18/15 at 10:19 am
Posted by VetteGuy
Member since Feb 2008
28193 posts
Posted on 12/18/15 at 10:17 am to
So how does CO compare with air? It is 3% lighter. So it distributes very easily through a house.



But when CO is produced, it immediately begins mixing, and therefore diluting, with the air around it. Therefore, it mixes with nitrogen, which doesn't burn, oxygen, which is burned creating the CO, H2O (humidity) and CO2 which are in the air. So the CO produced is not in pure form in the air. It is very diluted. And as CO is produced, it is warmer than the air around it.
Posted by brew400
West side Best side
Member since Sep 2009
575 posts
Posted on 12/18/15 at 10:27 am to
A plumber or local HVAC company should have materials on hand. 10 min fix and you can attach it with 1/4" screws so it doesn't come apart again.
Posted by Purplehaze
spring, tx
Member since Dec 2003
1800 posts
Posted on 12/18/15 at 10:32 am to
Not quite what you are asking but you say you have a house from the 80's. How old is your water heater? I live in the spring area and our house is 20 years old, single story, 3 br 2 ba with the water heater in the attic. I just replaced it (40 gal natural gas) and it cost $925. there was no problem, I felt it was time to replace it while I could afford to do that.

You may want to check your water heater's age. Imagine all the fun you will have replacing a ceiling due to a water leak and discovering just how good/bad your homeowners insurance is
Posted by TheAlmightySmash
New Orleans
Member since Jun 2014
5479 posts
Posted on 12/18/15 at 10:35 am to
Easy fix. I can do the job but...


Posted by cave canem
pullarius dominus
Member since Oct 2012
12186 posts
Posted on 12/18/15 at 5:00 pm to
quote:

how would I know if my gas were not burning properly


The color of the flame is the immediate tip off.

Rather than a lot of explaining in a thread, go with this as a guide LINK
Posted by llfshoals
Member since Nov 2010
15455 posts
Posted on 12/18/15 at 5:57 pm to
Honestly if it's an option, getting the water heater out of the attic and relocated elsewhere would be a good idea.

Lots can go wrong with that in the attic, none of it is good, and just about all of it is damn expensive.
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