 mityfowlPremium
join:2000-11-06
Dallas, TX | reply to alkizmo
Re: Two dryers in one vent said by alkizmo:said by mityfowl:Vent stacks or side stacks really don't matter. Run two. Why take a chance with your family?
If done correctly you'll never have to deal with a leak.
Ya ya I will run two if I go forward with the project of two dryers. I will start with just one dryer and see if it suffices. However I like to keep my options open and have the information ready on hand when/if I exercise the option. Adding a second dryer will be a major investment on another matter where I'd have to finally give in and upgrade to a 200A service. With my 100A service, I'd only have 15A to spare if my two dryers (50A) and oven/stove (35A) run simultaenously at full capacity. In a simple matter of timing, where all units are drawing their max amps + starting the central vac or a power tool, one of the two service 100A fuses would pop. (And that's in winter, in summer I'd have to decomission a dryer because of the AC). Not that I'd upgrade to 200A just for the second dryer. It would be a tipping point to justify the upgrade. Oh shit man you got a lot of problems with a family of 6 or 7.
You need to upgrade that panel.
You aren't even close to putting in 2 eclectic dryers
Good Luck |
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 KenPremium,MVM
join:2003-06-16
Markle, IN | reply to mworks
said by mworks:Code allows for multiple dryers on a single vent , it is done usually for apartment buildings or coin laundries, the requirements are pretty clear on what is required and you have covered most of it, the main one being that the exhaust piping be large enough to accommodate all dryers with little to no back pressure.
US residential building code, specifically IRC 1501.1, disallows combining a dryer exhaust with anything else. Large buildings obviously can't have a vent for every dryer, but those types of systems are engineered to take into account all the variables. My original point was it simply isn't worth the effort to engineer a system for 2 dryers just to avoid cutting a 2nd hole. Also it may or may not be allowed by code in his area. |
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mityfowlPremium
join:2000-11-06
Dallas, TX | reply to alkizmo
I'm not a sparky but don't you want 15-20% excess in your panel? |
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 alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | said by mityfowl:Oh shit man you got a lot of problems with a family of 6 or 7.
You need to upgrade that panel.
You aren't even close to putting in 2 eclectic dryers
said by mityfowl:I'm not a sparky but don't you want 15-20% excess in your panel?
Correct that my panel (And the overhead lines) aren't of sufficient amperage capacity for two dryers, hence why I said that I'm staying with just the one dryer and that if it's delaying the laundry process too much, then I will talk with my wife about the expense of upgrading the panel (And bring forth other points promoting it, such as a heat pump upgrade being possible when we replace the furnace and AC).
I won't hook up two dryers with my current panel.
However, as it is now, the panel is fine with one dryer.
I'd have to have the dryer, oven and AC all be pulling their respective MAXIMUM circuit protection amperage rating at the same time for something like a full minute to risk popping a service fuse (Because then I'd only have 20A left per leg).
I'm not a sparky, but I believe all those appliances pulling that much amperage at the same moment for more than a minute is unlikely.
BUT I could imagine a more reasonable situation where we're at 80% load on those appliances' max circuit amperage (64A).
Then have a combination of any 120V appliances/tools that draw 10A-15A running all that once (Could be, with 4 adults) to go over the 100A limit.
We'll see what happens  Those 100A service fuses are there for a reason after all. Maybe I'll buy a couple of spare ones when the in-laws arrive just in case. |
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mityfowlPremium
join:2000-11-06
Dallas, TX | reply to alkizmo
Man I really hate to get involved when your close to the threshold.
Think of 4 hair dryers. About 1500 watts each.
I don't see your house carrying the load. |
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mityfowlPremium
join:2000-11-06
Dallas, TX | reply to alkizmo
When I had a young family the washer and dryer never stopped. |
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mityfowlPremium
join:2000-11-06
Dallas, TX
1 edit | reply to alkizmo
For about 14 years.
Day and night.
Maybe 20 years |
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| reply to alkizmo
I tried what your talking about years ago. Sadly. it didn't work. One would give more exhaust then the other could handle and the weaker dryer thought the vent was plugged and shut the gas off. which it is designed to do if the vent is plugged. I ended up running separate lines outside and was done with it.
Hope this helps!
--
"Safe in the permanent gaze of a cold glass eye" |
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alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | reply to mityfowl
said by mityfowl:Man I really hate to get involved when your close to the threshold.
Think of 4 hair dryers. About 1500 watts each.
I don't see your house carrying the load.
Ok cmon, hair dryers are like the extreme daily appliances in terms of size/wattage.
They're so light yet hungry that I have one in a box near my generator for load tests.
We've done fine with 2 adults in the house for a year at this state. And the previous owners also did fine with the same appliances for 4 years before us.
We'll see what happens with 4 adults. If the 100A fuses start to pop, I'll have an easy time convincing my wife to upgrade the service.
said by mityfowl:When I had a young family the washer and dryer never stopped.
For about 14 years.
Day and night.
Maybe 20 years Poopy pants. |
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mityfowlPremium
join:2000-11-06
Dallas, TX | said by alkizmo:said by mityfowl:Man I really hate to get involved when your close to the threshold.
Think of 4 hair dryers. About 1500 watts each.
I don't see your house carrying the load.
Ok cmon, hair dryers are like the extreme daily appliances in terms of size/wattage. They're so light yet hungry that I have one in a box near my generator for load tests. We've done fine with 2 adults in the house for a year at this state. And the previous owners also did fine with the same appliances for 4 years before us. We'll see what happens with 4 adults. If the 100A fuses start to pop, I'll have an easy time convincing my wife to upgrade the service. said by mityfowl:When I had a young family the washer and dryer never stopped.
For about 14 years.
Day and night.
Maybe 20 years Poopy pants. Not ever.
Women |
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mityfowlPremium
join:2000-11-06
Dallas, TX | reply to alkizmo
OT
I'm still using that same washer  |
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 nunyaWho is John Galt?Premium,MVM
join:2000-12-23
O Fallon, MO
kudos:8 | reply to alkizmo
Edit: Someone already posted this link earlier in this very thread.
I've seen them do it in apartment buildings. When all is said and done, it's probably simpler to just have two though.
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...because I care. |
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alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | reply to mityfowl
Hey now it's not like it's a couple of hundred dollars expense.
We're talking about 2,000$ at least for a service upgrade
I, myself, hope I won't need the upgrade until I want to replace my furnace (Which is only 5 years old now).
It's much cheaper when you're getting a bi-energy furnace + service upgrade installation on the same contract. |
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mityfowlPremium
join:2000-11-06
Dallas, TX | reply to mityfowl
said by mityfowl:OT
I'm still using that same washer
I'm not using that wife |
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scooper
join:2000-07-11
Youngsville, NC
kudos:2 Reviews:
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| reply to alkizmo
If you really want 2 dryers , with your 100 amp service, and if gas is available - I'd have at least one be gas (preferably both). That way - your electric requirements for the 2 dryers is pretty low compared to electric dryers.
I can tell you that 1 washer is more than enough to have to wait on the one electric dryer , nevermind trying to run two washers. |
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 dosdoxiesPremium
join:2004-12-15
Wallingford, PA | said by scooper:I can tell you that 1 washer is more than enough to have to wait on the one electric dryer , nevermind trying to run two washers.
Likewise. Any two dryer set-up I ever saw still only used one washer since it takes a lot longer to dry clothes than to wash them. |
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| reply to alkizmo
and whatever you do, please dont start air drying in the winter... some of the worst humidity issues ive encountered were in the tree hugger houses where people air dry |
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 Jack_in_VAPremium
join:2007-11-26
Mathews, VA
kudos:1 | said by telco_mtl:and whatever you do, please dont start air drying in the winter... some of the worst humidity issues ive encountered were in the tree hugger houses where people air dry
In winter people spend lots of money and have lots of high maintenance humidifiers to add humidity to extremely dry air. Air drying some clothes should help considerably in adding moisture. |
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| said by Jack_in_VA:said by telco_mtl:and whatever you do, please dont start air drying in the winter... some of the worst humidity issues ive encountered were in the tree hugger houses where people air dry
In winter people spend lots of money and have lots of high maintenance humidifiers to add humidity to extremely dry air. Air drying some clothes should help considerably in adding moisture. up here in quebec (alkizmo is about 20 minutes from me) its the contrary, with the advent of electric baseboard heating we had extremely bad air quality until the codes changed in the 90s requireing air exchangers. Many of these late 80s early 90s can have humidity up to 70% in the winter. when it hits -20c outside you have niagara falls on your windows and walls. it wasnt until the 90s that our codes required exhaust fans in bathrooms and kitchens as well.
on the other hand, if the house has combustion sourced heating (oil or gas) in a non sealed system then there is rarely a humidity problem. |
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alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | reply to scooper
said by scooper:If you really want 2 dryers , with your 100 amp service, and if gas is available - I'd have at least one be gas (preferably both). That way - your electric requirements for the 2 dryers is pretty low compared to electric dryers.
I can tell you that 1 washer is more than enough to have to wait on the one electric dryer , nevermind trying to run two washers.
It's probably more advantageous per $ to pay 2000$ for a service upgrade to 200A than pay 1000$ for a new NG dryer + NG branch.
said by telco_mtl:on the other hand, if the house has combustion sourced heating (oil or gas) in a non sealed system then there is rarely a humidity problem.
Correct about baseboard heated houses in late 80s and early 90s. My parents bought a brand new house in 1991 and woah, the windows were weeping! We had to put towels under the living room windows because those frames were made of wood and it would start rotting. They later installed an air exchanger but it wasn't exactly superb because it didn't actually dehumidify, it just took air from outside. Not the most efficient.
My current house is built in 1964 with NG heating for the furnace and water. My NG furnace does "dehumidify", it dumps a lot of water in the drain pipe during the winter.
Last winter I made a thread about whole house humidifiers because my house was in the 30% humidity
So yes I can air dry indoor no problem. I have a colleague of mine with a house of the same generation that air dries ALL THE TIME and never has high humidity problems in winter.
Actually my laundry room project includes air drying lines, since the ceiling is over 10 feet high in that room. |
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