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1 edit | reply to workablob
Re: Gas Odor from Furnance said by workablob:said by AVD:next time call a plumber, not the utility.
Plumbers do this kind of work? I would have thought an RHVAC guy but there's a lot I don't know. I'd only call a plumber if the gas leak is coming from a clogged toilet  Over here, we have licensed gas techs who'd handle it as long as the sniffer doesn't hit 4%.. If it does, your house becomes the utility's and the fire department's problem 
Edit: On a side-note, if you reported a gas leak to the utility and hear a KNOCK soon after, it might be a good time to get out of the house and find something to do a couple of blocks over, just in case 
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If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.
—George Bernard Shaw |
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| reply to slcpd6469
I've been watching it over the last couple days and no longer smell gas. I don't know why it would just stop but it has. |
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| said by slcpd6469:I've been watching it over the last couple days and no longer smell gas. I don't know why it would just stop but it has.
Are you sure you were feeling it? Mercaptan (well, technically butanethiol) is pretty smelly stuff and if there was a leak, you'd be able to smell it. Might have been psychosomatic, considering the fact that you had a real emergency.
If you REALLY wanna make sure, spend the cash and have a gas tech go over your system with soapy water and a sniffer. It's probably a 1 hour job, but the peace of mind can be worth it.
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If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.
—George Bernard Shaw |
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 nunyaWho is John Galt?Premium,MVM
join:2000-12-23
O Fallon, MO
kudos:5 | reply to slcpd6469
Because it got so cold and the furnace has been running more.
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...because I care. |
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| reply to slcpd6469
said by slcpd6469:The intake is drawing straight from the basement (installer said this was fine) and the exhaust is going straight outside.
95% efficient and you're drawing combustion air from inside the house?? That's not a good install.
The whole idea of having a very high efficiency device is two-fold:
a) combust the fuel efficiently
b) use outside air for combustion to minimize ACH's (air changes per hour) within the building envelope
Both of these contribute to lower heating costs. Having one without the other is less than optimal. |
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 mityfowlPremium
join:2000-11-06
Dallas, TX | reply to slcpd6469
I think he has a real smell issue.
I have it in my dryer |
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TheMGPremium
join:2007-09-04
Canada
kudos:1 Reviews:
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| reply to MaynardKrebs
said by MaynardKrebs:said by slcpd6469:The intake is drawing straight from the basement (installer said this was fine) and the exhaust is going straight outside.
95% efficient and you're drawing combustion air from inside the house?? That's not a good install. Exactly what I was thinking. Every install of a 90%+ efficiency furnace I've seen, has taken the combustion air from outside. Typically through a special double-walled vent pipe on the side of the house.
I've NEVER seen the intake of such a furnace be left open to intake indoor air for combustion.
That is NOT a proper install, and the furnace will most likely not meet the manufacturer's specified efficiency in this configuration. |
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| In the manual it states that the furnace can use indoor air for combustion but the room where the unit is installed must meet specific size requirements. The room my unit is in is an unfinished/unconditioned open basement that is approx 675 sqf. This amount of space according to the mfg will accommodate 105,000BTUH. I have a 75,000 BTUH furnace. How in this case would using indoor air not be a good install? Is it the norm, they way you would do it, they way I would do it? Maybe not but its not a bad install according to the mfg. I will say the only bad thing about my install and using indoor air is there is not a 90 degree elbow on the intake to prevent blockages. I will be adding one soon. |
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 mix
join:2002-03-19
Utica, MI | Because you are drawing air from your home into the furnace for combustion and then exhausting it outside. This creates pressure differential which sucks cold air from outside your home in through every nook and cranny to equalize the pressure. If you use outdoor air for combustion, and exhaust it back outdoors, no pressure differential. Think about it. |
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 SandSharkLong may you runPremium,MVM
join:2000-05-23
Santa Fe, TX
kudos:3 | reply to slcpd6469
As far as I am aware, it is permissible to use combustion air from an unconditioned basement as long as the proper quantity and quality of air is provided. The installation is commonly referred to as "one pipe" or "single pipe" installation. |
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 bcoolPremium
join:2000-08-25
The Ozarks | Wow...it is interesting that I just had this discussion with my HVAC guy who is suggesting that it's not such a good idea to bring cold winter air into gas furnace---better to use basement air. But I wonder. He also said you have to be careful of double-wall piping because of wasps. I think drawing in outside air for combustion is best practice on my RUUD 95% AFUE single stage gas furnace. I'm sure HVAC guy will come around.
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"in flagrante delicto" |
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garys_2kPremium
join:2004-05-07
Farmington, MI | His opinion doesn't mean squat if the manufacturer recommends it. Look up the manual and let that decide. |
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| reply to bcool
said by bcool:He also said you have to be careful of double-wall piping because of wasps. I think drawing in outside air for combustion is best practice on my RUUD 95% AFUE single stage gas furnace. I'm sure HVAC guy will come around.
I'd still go with A or B depending on the needs, especially when venting through unconditioned space. Otherwise you risk condensation, which can cause pitting and release exhaust gases into your home (CO2 if you're lucky, CO if you're not).
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If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.
—George Bernard Shaw |
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bcoolPremium
join:2000-08-25
The Ozarks | said by FiReSTaRT:said by bcool:He also said you have to be careful of double-wall piping because of wasps. I think drawing in outside air for combustion is best practice on my RUUD 95% AFUE single stage gas furnace. I'm sure HVAC guy will come around.
I'd still go with A or B depending on the needs, especially when venting through unconditioned space. Otherwise you risk condensation, which can cause pitting and release exhaust gases into your home (CO2 if you're lucky, CO if you're not). "A" or "B" depending on the needs? Venting through unconditioned space? ----Could you clarify just a bit for a thick head tonight?
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"in flagrante delicto" |
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| Brainfart. Not surprising considering the fact that I was between shifts. Carry on, nothing to see here  |
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