9
votes
Is it safe to live in a home with a blocked water heater flue?
A blocked/non functioning vent is very bad. Bad as going to sleep and never waking up bad. There should be CO detectors in that building. Quite a few locations have it as a law they are to be ...
- 28.3k
5
votes
Furnace Exhaust Flue Behind A/C
The outside unit does not interact with your inside air,
Instead it compresses and condenses a refrigerant after which the liquid refrigerant gets pushed to the inside air handler where it is made to ...
- 12.8k
4
votes
Is it safe to live in a home with a blocked water heater flue?
With the faulty heater turned off, you're safe.
For your neighbour if it's winter and they have no heating probably it's not safe, but that is a legal question not home improvement.
- 23.2k
3
votes
Accepted
Chimney damper does not open
You need to slide that handle over to the larger slot and then pull it down or push it up.
Ok, good you got it. It was hard to tell from the picture which way it operated. You could try some WD-40 but ...
- 83.7k
2
votes
What are these copper pipes and do I need to do anything to them before covering them with a wall?
What are these copper pipes and do I need to do anything to them
before covering them with a wall?
Since they have been open behind a wall for nearly 40 years without an issue i think is is safe to ...
- 13.7k
2
votes
Accepted
Gas Combustion Air Duct Re-Route Considerations
Consulting with an HVAC technician advised:
disconnect the left duct from the fireplace just below the first floor subfloor
disconnect the right duct just above the wye on the first floor
route the ...
- 246
2
votes
Wood burning stove chimney leaking
A normal fix for this would be to get some tile adhesive, roof sealer, and spread it over all the vent cap edges. Spread it under all the tile edges and also along the lower exposed edge of the cap. ...
- 83.7k
2
votes
HVAC flue vent making weird noise
Because that furnace flue is plastic pipe we know that your furnace is a 90% (or higher) efficiency unit. In some installations the flue length may be very short such that water vapor never does ...
- 32.1k
2
votes
Furnace Exhaust Flue Behind A/C
There are two concerns:
Combustion Products - CO, CO2, particulates
The outdoor A/C unit is sealed, so none of this can get into the house, and none of this will, under any reasonably anticipated ...
2
votes
Accepted
How should I seal a flexible flue liner passing through large clay thimble?
There is a flexible aluminum flue liner inside the chimney, and that passes through the clay thimble by way of a mortar sleeve. To repair this: remove the wye, adapt the flexible liner to type B gas ...
- 76
1
vote
Furnace Exhaust Flue Behind A/C
Fix it.
There is no risk of exhaust air entering your house from this arrangement. The A/C condenser does not handle air from the house at all. It sucks air in through its sides and blows it out ...
- 43.4k
1
vote
Furnace Exhaust Flue Behind A/C
Yes this is mildly problematic - not an emergency, mind you, but it shouldn't have been done this way. The two problems I see are these:
Exhausting to a semi-restricted space. The exhaust stream, ...
- 32.1k
1
vote
Accepted
HVAC flue vent making weird noise
Does the indoor portion of the vent pipe have a low spot? Perhaps it has some bends to get around an obstruction? If so, you may have an accumulation of water that has condensed from combustion gases. ...
- 12k
1
vote
Accepted
Remove fireplace leave metal chimney on roof
You can cap it with a chase cover if its not functional, your local sheet metal shop can probably make one at a low cost, here's an example:
https://www.kmsheetmetal.com/shop/Chimney-Chase-Cover-...
- 560
1
vote
Chimney Questions
Typically the important detail is how the two flues are lined. Older properties with brick built chimneys and no linings can leak flue gasses from one hot flue into the adjacent cold one (through ...
- 3,321
1
vote
Vent 80% gas water heater through rim joist?
4" B vent requires 1" to combustibles and has an OD of 4.5".
So, can you put a 6.5" hole in a 10" rim joist? IDK, the rule for joists is one third their depth.
I wouldn't ...
- 13.5k
1
vote
I think my gas boiler flue looks off
Assuming it's a UK installation, then "snorkels" aren't unusual. They are required to prevent exhaust gases from entering through windows, or doors in this case.
You can't have the flue ...
- 4,131
1
vote
Accepted
How can I best connect this metal gas flue pipe to the old asbestos cement chimney pipe?
What I did. I purchased a new flexible elbow and borrowed a five blade HVAC crimper from my local Tool Library.
I carefully spray painted the transite asbestos flue pipe, just to make it a bit less ...
- 10.9k
1
vote
Smell from recently capped chimney
You are likely correct with your analysis.
All the properly capped chimneys I have seen have an air vent top and bottom to allow slower air movement compared to the original chimney.
When people ...
- 28.1k
1
vote
Leak from base of flue
To properly seal the fireplace flue, I’d 1) Install a flue cap, 2) put a cement “wash” between the flue and fireplace bricks for positive drainage, 3) Install a clear sealer on the fireplace bricks, 4)...
- 23.4k
1
vote
B-Vent Flue Condensation
To answer your question I suppose it could although I have never seen it. I doubt your vent cap is too restrictive unless you have or have had in the recent past a bad sooting problem. I rather ...
- 7,015
1
vote
Accepted
Chimney repair for old unused flue
I've had two masonry contractors out. They both agreed the flue is unused, both stated it is a dummy flue. I'm not convinced, but it doesn't matter.
Both noted the water getting inside. Booth ...
- 2,025
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