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Old 02-04-2009, 10:02 AM   #16
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Is my water heater large enough?


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Originally Posted by logan View Post
Everything I've read online would suggest that 50 gallons is MORE than enough.

Home Depot says that 50 gallons is about right. One of the commentors on this Yahoo post said that a 60 gallon tank was more than enough for their family of SEVEN!

But when I just do the basic math: Let's say two showers at 12 minutes each, with water flowing at about 2 GPM -- that's 48 gallons right there...my entire tank! That doesn't take into account the First Hour Rating of, I believe, 70+ Gallons for my heater. But I'm not convinced it heats quick enough for back to back showers.

Is it possible that my wife and I take unusually long showers? Is 12 minutes that long?

Thanks again,
Michael
You're assuming that you're using 100% hot water out of the shower. It's probably more like 75% hot, 25% cold. Therefore your usage numbers are high. You should be fine with 50 gallon. Have you measured the outlet temp of the hot water?

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Old 02-04-2009, 10:05 AM   #17
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welp, this will certainly give you longer showers, but i'd advise against going TOO high a temp.
150 would be overkill just to gain an extra 10 or 15 minutes of quality shower time. experiment in 5 degree increments over the next few days and see how much longer you can shower each day. let us know if we've helped and we'll be sending you the bill soon. lol

have a great shower!

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Old 02-04-2009, 10:08 AM   #18
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Is my water heater large enough?


good point on my math error jerry! thanks!
...hang on while i go make another pot....

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Old 02-04-2009, 10:12 AM   #19
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Is my water heater large enough?


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You're assuming that you're using 100% hot water out of the shower. It's probably more like 75% hot, 25% cold. Therefore your usage numbers are high. You should be fine with 50 gallon. Have you measured the outlet temp of the hot water?
I haven't measured the outlet temp yet. What's the best way to do that?
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Old 02-04-2009, 10:15 AM   #20
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Is my water heater large enough?


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I haven't measured the outlet temp yet. What's the best way to do that?
Cooking thermometer at the closet faucet to the WH. Keep things like this in mind when adjusting the WH temperature:
http://www.med.umich.edu/1libr/pa/pa_hotwatr_hhg.htm

Last edited by jerryh3; 02-04-2009 at 10:18 AM.
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Old 02-04-2009, 10:24 AM   #21
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if you don't own a cooking thermometer, just open the faucet and let it run a sec, then if it stings your hand but you can keep it in the flow, you're around 110, 120. if you need to pull your hand away, 120 to 130ish, i'd guess.
(nice, informative link, jerry)
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Old 02-04-2009, 10:28 AM   #22
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Is my water heater large enough?


I lived in a condo for years that had three floors on my building, and fifteen units per floor. We had 5 buildings all with two or three floors of 15 each. In the basement we had a single 50-gal water heater with a recirc pump in all the buildings that had three floors. The two buildings that only had two floors each, only had 30-gal units. I know that the pumps kept the water recirculating at all times so that each condo could have hot water constantly.

But my point is that the heater was no larger than you have in your house.
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Old 02-04-2009, 11:38 AM   #23
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Is my water heater large enough?


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I lived in a condo for years that had three floors on my building, and fifteen units per floor. We had 5 buildings all with two or three floors of 15 each. In the basement we had a single 50-gal water heater with a recirc pump in all the buildings that had three floors.
A single 50 gal heater for...45 units? Umm...I'm sure there was something else going on there. I don't think we're taking 45 people worth of showers!!
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Old 02-04-2009, 11:42 AM   #24
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keyword=recirculating=constant heating

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Old 02-04-2009, 05:53 PM   #25
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Is my water heater large enough?


I am sure you have gotten a lot of answers, but I just want to say 50 gallons is *plenty* big for two people and there is something up if you are having hot water issues. Not sure if anyone mentioned this to you, but also, since it is electric, make sure there isn't some timer that turns it off to conserve energy at inopportune times for you.


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Hi everyone.

My apartment has a 50 gallon electric water heater. Both the top and bottom burners are set to the "middle" position on the thermostat, which I think is just called "hot." There is barely, but not quite, enough hot water for two 10-15 minute back to back showers. Does that sound right? I thought that a 50 gallon tank would be plenty for just two people. Any thoughts?

To be exact, my heater is the M-2-50T6DS from Bradford-White -- specs are here

Thanks,
Michael
Chicago, IL
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Old 02-04-2009, 06:41 PM   #26
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Is my water heater large enough?


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keyword=recirculating=constant heating

DM
No it means hot water is available quicker. It does not produce more hot water.
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Old 02-04-2009, 06:45 PM   #27
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Is my water heater large enough?


I have a 50g electric, temp set at 120
I can take a 45 minute hot shower without running out
My basement pipes are all insulated
Are you sure it is connected correctly?
I saw someone hook one up to 120v instead of 240v
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Old 02-04-2009, 11:05 PM   #28
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Is my water heater large enough?


ALL these posts and not ONE of them saying "Shower together to save water(hot)" I am in utter disbelief it hasnt been mentioned from THIS group d ; ~ )

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