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Old 01-28-2012, 02:50 PM   #1
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HWH vented up chimney--want chimney gone


Group,
Here is my situation and idea. Now that I have a HE Furnace and vented with PVC my HWH is all that uses the chimney for venting. It is a non power vented water heater. Where the chimney comes up through the main house level I would like to remove the wall because it goes between the kitchen and living room and would open up the rooms very well ..*IF* it was possible to remove the chimney.
So I was wondering if anyone has "thinned" down a chimney to just large enough for the vent for the water heater. By thinning down I am thinking of if I could run an insulated type of vent up through where the chimney is and then box in around that vent so I could have the opened space with the big chimney gone.
I have not talked to a chimney contractor yet but just wanted to get anyones idea from on here who has any input they would like to offer.
Thanks
Joel

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Old 01-28-2012, 03:05 PM   #2
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HWH vented up chimney--want chimney gone


You'll need "B Vent" and a fireproof chase to run it through...
top of my head I'll say that comes out to a min of 10" square.
Does that work?

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Old 01-28-2012, 03:29 PM   #3
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HWH vented up chimney--want chimney gone


ehh... 10" square would be do able.... tho Id naturally prefer it smaller IF possible. I've emailed a few chimney people so Ill wait to hear from them and see what my options are...
Ill check into a B vent. Thanks for the info.
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Old 01-28-2012, 03:51 PM   #4
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HWH vented up chimney--want chimney gone


Local codes will dictate what you can do in the end.The codes here state that B vent requires only a 1 inch clearance to anything thats combustible.If you make a chase out of a fire rated dry wall, the chase could be even smaller then 10 x 10. the other option is to switch to a "on demand" tankless HW, or switch to a power vented HWT and vent it side wall.
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Old 01-28-2012, 05:22 PM   #5
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HWH vented up chimney--want chimney gone


How about just installing a power vent water heater?
By the time you buy all the b-vent and fittings then build a new wall around it i dont see you saving any money over the power vent heater run through wall like your new furnace
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Old 01-28-2012, 06:05 PM   #6
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HWH vented up chimney--want chimney gone


You could use a power venter but I doubt you would like it as it means another motor to make water heater work.
You could buy a direct vent water heater but they tend to be expensive.
A natural vent heatewr is quiet and cheap,I would run a 4" B-vent.The inside dimensions would be 6 1/2 " x 6 1/2" for the chase.7"x7" would be better.
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Old 01-28-2012, 06:53 PM   #7
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HWH vented up chimney--want chimney gone


"Just say NO!" to the power venting WH's!
when the power is out regular WH owners can still shower.
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Old 01-28-2012, 07:51 PM   #8
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Quote:
Originally Posted by TarheelTerp View Post
"Just say NO!" to the power venting WH's!
when the power is out regular WH owners can still shower.
lmfao............power (around here anyway) goes out once every ten years at best.......that is NO reason to stay with a gas eating monster.Tankless HW systems save at least 50%off your annual expense or generating HW.The cost of a Tankless HW system installed is down to an average of $2500, a natural draft standing pilot tank is $ 925 for a low baller.....a power vented tank goes in at $1750. if your annual cost of heating your HWT on a standing pilot is $1200 ($100 a month) and you switch to a tankless system.........in just 3 years you save enough to pay for the difference in tanks......just 3 year.....no other single gas burning appliance can save you that much that fast.Are you willing to give up that kind of savings just waiting for the power to go out? Hey maybe the money you save you can invest in a whole house generator.....
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Old 01-29-2012, 06:49 AM   #9
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HWH vented up chimney--want chimney gone


I would just install an electric water heater and be done with it forever.

Rip that chimney out.
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Old 01-29-2012, 07:45 AM   #10
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HWH vented up chimney--want chimney gone


or,,, go solar with electric backup!!! just an other option to think about!!!
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Old 01-29-2012, 09:58 AM   #11
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HWH vented up chimney--want chimney gone


Quote:
Originally Posted by harleyrider View Post
lmfao.............
And your solution is a 2500 piece of equipment? Ha!
In addition to the $2500 up front equipment costs...
what other costs (like gas/electric service & changes) are involved?

I'll stick with the plain vanilla $300 + a $5 thermocouple every 5 years WH tyvm.

Last edited by beenthere; 01-29-2012 at 10:05 AM. Reason: Removed uncalled for comment/question
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Old 01-29-2012, 10:40 AM   #12
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HWH vented up chimney--want chimney gone


Quote:
Originally Posted by TarheelTerp View Post
And your solution is a 2500 piece of equipment? Ha!
In addition to the $2500 up front equipment costs...
what other costs (like gas/electric service & changes) are involved?

I'll stick with the plain vanilla $300 + a $5 thermocouple every 5 years WH tyvm.
Me Too.
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Old 01-29-2012, 07:18 PM   #13
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HWH vented up chimney--want chimney gone


Thanks for all the info and suggestion guys. Unfortunatly when I moved into the house in spring of '09 I knew the water heater was shot and bought a new replacment normal gas type. At that time I had no plans for tearing out walls and all that jazz...
I have now 3 chimney guys I am waiting to hear back from to get their ideas for what I can do. It is only me in the house so I dont need a super duper water heater.
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Old 01-30-2012, 06:04 AM   #14
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HWH vented up chimney--want chimney gone


Think about it, small electric water heater one wire and circuit breaker, years of trouble free hot water, no chimney guys to deal with, no more old chimney in your way, were talking cheap here 300/400 bucks and your done. Sell the other heater on e bay or Craig's list for a few bucks. Sit back and relax.
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Old 01-31-2012, 10:22 AM   #15
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HWH vented up chimney--want chimney gone


Cold,
I may just do that...tho Ive never had issues with the gas fired water tank. Just need to mull things over a bit...

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