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  #1  
Old 2007-03-29, 01:50 PM
Lendex Lendex is offline
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Default Tankless Water Tank?

Hi there,

I've been quoted for a tankless water system from Fieldgate homes for $3k. I'm the type that loves to take long hot showers and better yet long baths. I've been told that if i do that, I'm going to deplete all the hot water from our standard hot water tank. So therefore, I should get a tankless hot water system for our house.

The truth is...we really want to save money, we don't have a lot of money but at the same time, we don't want to run out of water either. What's the best thing to do?

The standard for our hot water tank is either 40-50 gallons I believe. Should we get the tankless system from the builder (fieldgates) or get it done later for cheaper?

Please help!

Thanks

Last edited by Lendex; 2007-03-31 at 01:05 PM.
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  #2  
Old 2007-03-29, 06:45 PM
oakvillehomeowner oakvillehomeowner is offline
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better yet, get a "high recovery" water heater on a rental basis. they're about 65,000 btu and require a 3' vent, but i can take a 40 minute shower without running out of water, and i can take a 25 minute shower while the soaker tub is filling at the same time. it's cheaper than the tankless and it handles higher flow rates.

for added efficiency, get them to install a wastewater heat recovery pipe in your main stack - it's about 2' long, 3" diameter copper and wrapped with a 1/2" copper tube spiralling around it. The water feeding into your tank flows throught the wrap-around pipe to draw in the heat from the shower drain water - some water heaters can keep up almost indefinitely that way.
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  #3  
Old 2007-03-30, 10:47 AM
Lendex Lendex is offline
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Quote:
Originally Posted by oakvillehomeowner View Post
better yet, get a "high recovery" water heater on a rental basis. they're about 65,000 btu and require a 3' vent, but i can take a 40 minute shower without running out of water, and i can take a 25 minute shower while the soaker tub is filling at the same time. it's cheaper than the tankless and it handles higher flow rates.

for added efficiency, get them to install a wastewater heat recovery pipe in your main stack - it's about 2' long, 3" diameter copper and wrapped with a 1/2" copper tube spiralling around it. The water feeding into your tank flows throught the wrap-around pipe to draw in the heat from the shower drain water - some water heaters can keep up almost indefinitely that way.

Thank you so much for replying. Where can I get information on a high recovery water heater on a rental basis? Do you know who I have to call to get this done or who can install one? Can the builder to this? Do i get the builder to install a heat recovery pipe in my main stack?

This is such a great idea. Thank you so much.
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Old 2007-03-30, 05:32 PM
oakvillehomeowner oakvillehomeowner is offline
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mine was offered to me by the builder as an upgrade. i had to pay him $100 for the larger venting. find out who is supplying the rental water heaters for your development and then call them or look up their price list on their website. they'll have a bunch of options for you.

if they offer you a model where the combustion air intake is vented to the outside as well, take it. it really cuts down on the negative air pressure inside the house. you usually only see this on furnaces and commercial models.
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Old 2007-04-02, 10:36 AM
Lendex Lendex is offline
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Thank you again for your reply.

We went back to our builder and asked them about this heat recovery system and they don't have it. They only have the usual tanks and the tankless system so I guess we're out of luck
I think it's great that your builder has it as an upgrade but it's too bad that Fieldgate doesn't.
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Old 2007-04-02, 11:43 AM
oakvillehomeowner oakvillehomeowner is offline
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if your tank is a rental, find out who they are signing you up with. you may have some options with them.
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Old 2007-04-02, 09:46 PM
mcalearm mcalearm is offline
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I lived in Japan for a number of years and they don't have any hot water tanks there for residential houses. My wife (whose Japanese) was surprised that Canada doesn't use them. Of course in winter there's a slight delay in getting hot water compared to a hot water tank but overall the energy savings is considerable because you aren't constantly burning gas or using electricty to keep water heated. But what I did find was that if they break it does cost a lot to have them fixed. If I could afford one I would.
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