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size of HWT for basement suite

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  • Jun 4th, 2021 10:40 pm
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Jun 3rd, 2021 11:30 am
miningminer [OP]
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Dec 15, 2017
779 posts
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Jun 3rd, 2021 11:30 am

size of HWT for basement suite

We had a 2 story 3 bedroom just built for us with a legal basement suite and asked the builder to size the HWT up accordingly. Now I'm seeing they have installed a 55 gallon tank which just seems like the standard. I see some rule of thumb guidelines for sizing a tank but would like some first hand experiences. Would this be enough for 5 people in total in the household with separate laundries?
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Jun 3rd, 2021 11:36 am
fergy
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Sep 27, 2006
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Not so easy there Ma…

Jun 3rd, 2021 11:36 am

miningminer wrote: ↑ We had a 2 story 3 bedroom just built for us with a legal basement suite and asked the builder to size the HWT up accordingly. Now I'm seeing they have installed a 55 gallon tank which just seems like the standard. I see some rule of thumb guidelines for sizing a tank but would like some first hand experiences. Would this be enough for 5 people in total in the household with separate laundries?
Look on the unit for the BTU rating or take a photo of the model number, some are higher than normal BTU and can provide almost continuous hot water.
Jun 3rd, 2021 1:03 pm
pootza
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Dec 19, 2009
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Jun 3rd, 2021 1:03 pm

You'll definitely be running out of hot water on lots of occasions even if you do your laundry in cold water only.
Jun 3rd, 2021 1:15 pm
tralexus1
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Feb 28, 2018
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Waterloo region

Jun 3rd, 2021 1:15 pm

pootza wrote: ↑ You'll definitely be running out of hot water on lots of occasions even if you do your laundry in cold water only.
I would think for 5 people it would be adequate... pretty standard for a family dwelling
Jun 3rd, 2021 2:37 pm
pootza
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Dec 19, 2009
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Jun 3rd, 2021 2:37 pm

tralexus1 wrote: ↑ I would think for 5 people it would be adequate... pretty standard for a family dwelling
It's a two family dwelling ... and at 40,000 BTU's they will run out.
Jun 3rd, 2021 2:51 pm
KevinM56081
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Jun 4, 2020
1634 posts
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Clarington, ON

Jun 3rd, 2021 2:51 pm

What province... If ontsrio, unless it's a totally custom build, it's almost guaranteed to be a rental. Trying to upgrade to a larger tank Capacity tank, or one with a faster recovery may be an option.
Jun 3rd, 2021 11:08 pm
1chinaman
Sr. Member
Jan 19, 2013
669 posts
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Ottawa

Jun 3rd, 2021 11:08 pm

Mixing valve probably installed for code spec
You can always get the tank temp turned up higher to get more first hour of hot water
Chances are pretty slim you ll run out of hot water unless everybody has the same schedule
+1
Jun 4th, 2021 10:40 pm
miningminer [OP]
Sr. Member
Dec 15, 2017
779 posts
899 upvotes

Jun 4th, 2021 10:40 pm

two family, seperate units entirely meaning seperate laundry as well.
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