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Posted on 1/18/15 at 2:31 pm to CaptainJ47
Depends, but it is more to put a tankless in an attic bc they take a special exhaust. I would estimate about 1500-2000
Posted on 1/18/15 at 2:35 pm to Jobu93
quote:
will you ever get actual hot water with tankless?
depends on the amount of temperature rise you set it at.... but, yes... might be tougher to get there in the winter, of course, but yeah...
for me, it's about reducing my family's carbon footprint.... unfortunately, my daughter will have to live in this world, as we leave it, and if i can make it just a little bit better for her, great.... i just wanna do my part...
Posted on 1/18/15 at 3:17 pm to chRxis
quote:
trying to make this house as energy efficient as possible for a few reasons....
What other energy efficienct elements are you planning?
This post was edited on 1/18/15 at 3:18 pm
Posted on 1/25/15 at 1:40 pm to nolanola
Spoke to a builder and he said his concern with putting a unit outside is that during extreme cold (house will be in Covington) there could be issues with the unit freezing causing damage. Apparently he saw this happen last year with that really called January weather we had. Anyone have thoughts?
I like the idea of putting water heaters outside as it will be 2 less holes punched in the roof.
I like the idea of putting water heaters outside as it will be 2 less holes punched in the roof.
Posted on 1/25/15 at 2:21 pm to nolanola
My inlaws have constant problems with theirs installed outside. I believe the humidity around here affects the electronics. I have had one in the attic vented through the exterior wall for 8 years without a problem.
Posted on 1/25/15 at 2:23 pm to nolanola
I have a rinnai. I like it. Buy one if you want endless hot water, not because it will save you money. It does not save money. It costs more for the unit and installation.
If you have a larger house you will likely need two units. I would place one near the master bath and one near the kitchen.
If you have a larger house you will likely need two units. I would place one near the master bath and one near the kitchen.
Posted on 1/25/15 at 2:40 pm to Mariner
It absolutely saves you money in the long run by not keeping a tank full of water hot when not needed even with higher upfront costs. It's not a complicated install, I put mine in myself.
Posted on 1/25/15 at 2:42 pm to nolanola
quote:
What other energy efficienct elements are you planning?
extra insulation, solar attic fan, low flow faucets/showerheads, solar panels, etc.... whatever I can afford...
Posted on 1/25/15 at 3:33 pm to CajunAlum Tiger Fan
quote:
It absolutely saves you money in the long run by not keeping a tank full of water hot when not needed even with higher upfront costs. It's not a complicated install, I put mine in myself.
Unless youre paying cash for your house, you have to factor in the price difference with the interest rate on your mortgage, for the life of the loan.
15 years is the average time someone lives in a home. So unless you can see significant savings in that time, its a wash.
The average cost to run the water tank vs tankless is $15 a month (x12), or $180. Over 15 years that = $2700. Factoring in the difference in price, along with your interest rate over the life of the loan, there is almost no difference.
Posted on 1/25/15 at 3:44 pm to nolanola
I went with tanks, all electric. (Foamed attic)
Do not buy a hybrid water heater, they suck.
Do not buy a hybrid water heater, they suck.
Posted on 1/25/15 at 3:47 pm to Mariner
quote:
Buy one if you want endless hot water,
The endless hot water is important to me. Just don't want to sacrifice hot water for problems.
Posted on 1/25/15 at 3:50 pm to nolanola
You probably should decide first if you are going to use foam.
If you do, that will rule out (generally) putting a combustible unit in the attic.
If you don't, you can use whatever.
If you do, that will rule out (generally) putting a combustible unit in the attic.
If you don't, you can use whatever.
Posted on 1/25/15 at 4:54 pm to nolanola
quote:
concern with putting a unit outside is that during extreme cold (house will be in Covington) there could be issues with the unit freezing causing damage.
They make exterior units with an electric heating element that turns when the temp. drops below freezing. However the pipes going to and from the unit would need to be insulated.
Posted on 1/25/15 at 5:02 pm to Golfer
Just add a re circulation pump to tankless.
Posted on 1/25/15 at 5:18 pm to weadjust
quote:
They make exterior units with an electric heating element that turns when the temp. drops below freezing. However the pipes going to and from the unit would need to be insulated.
I figured this would be some sort of option.
Posted on 1/25/15 at 5:35 pm to nolanola
unlimited hot water is nice - took for.ev.er. for the water to actually heat up at my old place. we just moved and we have a tank hot water heater. not to say i wouldn't go back to tankless (because we have run out of water a couple of times ) but i'd probably go for the combo unit.
Posted on 1/25/15 at 7:38 pm to ItNeverRains
quote:
Just add a re circulation pump to tankless.
how do you set this up and what does it do for you?
if you put the unit in your attic, don't make a straight run out the roof. water will blow in the roof vent, and if the wh is directly below the vent, water will tend to accumulate in the very sensitive electronics. ask me how i know.
the stainless vent pipe was almost as expensive as the water heater. the vent is now offset with a drip leg directly below the vent cap.
Posted on 1/25/15 at 7:40 pm to VetteGuy
quote:
You probably should decide first if you are going to use foam.
I haven't fully decided but I'm probably not doing foam. What size tanks did you with? I have a 40 right now and it isn't cutting it.
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