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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

 
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  #1  
Old 2/9/07, 1:39 PM
gmathias gmathias is offline
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Default Electric Hot Water Heat

I have an inspection scheduled next week for a home that has a "electric hot water" heating system, as described on the MLS sheet. I am not familiar with a heating system like this. I expect that there is some sort of tank or apparatus where electric coils heat water, a pump, and distribution system. I would like to know what issues I should look for, other than any normal electric appliance. Has anyone seen these? or is there a site where I can read up on them? Thanks.
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  #2  
Old 2/9/07, 1:59 PM
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David A. Andersen David A. Andersen is offline
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Default Re: Electric Hot Water Heat

There is a hot water heater with 4 connections. Hot water is circulated through a water coil (like an a/c coil) in the air handler. Makes the cold air warm.

Just turn it on and see if it makes warm air. Inspect the water heater like any other. Air handler like any other. Instead of refrigerant in the coil, you'll have hot water.
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  #3  
Old 2/9/07, 2:08 PM
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Roy D. Cooke, Sr Roy D. Cooke, Sr is offline
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Default Re: Electric Hot Water Heat

Gee I have never heard of an electric being large enough to heat the home .
I have done a lot of gas ones .
Please keep us posted thanks .
Roy Cooke



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  #4  
Old 2/9/07, 2:46 PM
Richard L. Bennett Richard L. Bennett is offline
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Default Re: Electric Hot Water Heat

Have seen it here in FL on one small home.

It was a DIY in a rental -- Renters paid the electric bill

Hope the MLS is wrong

rlb
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  #5  
Old 2/10/07, 5:39 AM
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Russel Ray Russel Ray is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by rcooke
Gee I have never heard of an electric being large enough to heat the home .
I've run across a couple in small homes out in the boondocks where they don't have gas.



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  #6  
Old 2/10/07, 7:18 AM
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David P. Valley David P. Valley is offline
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Default Re: Electric Hot Water Heat

It's called hydronic heating. I see this type of heating in the newer homes.

Here's an illustration, except this one's gas.

"Click to Enlarge"
Attachment 9051

Inspect the water heater like you would on an average water heater. Then follow the piping to the air handler. Then inspect the air handler like you would on an average air handler. The system looks complicated, but it's not.

Last edited by dvalley; 10/7/07 at 4:42 PM..
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  #7  
Old 2/10/07, 9:19 AM
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Michael Larson Michael Larson is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by rray
I've run across a couple in small homes out in the boondocks where they don't have gas.
That's why they sell Propane Russel.
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  #8  
Old 2/10/07, 11:12 AM
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Russel Ray Russel Ray is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by mlarson
That's why they sell Propane Russel.
You haven't checked the price of propane out in the boondocks!



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  #9  
Old 2/10/07, 11:26 AM
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Roy D. Cooke, Sr Roy D. Cooke, Sr is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by rray
You haven't checked the price of propane out in the boondocks!
Regardless I do not think they build an electric Water heater that could heat a home in most of North America.
Roy Cooke



Need help on inspection call my cell 613-827-2011

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  #10  
Old 2/10/07, 11:38 AM
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Russel Ray Russel Ray is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by rcooke
Regardless I do not think they build an electric Water heater that could heat a home in most of North America.
Roy Cooke
I guess we have different definitions of "home" because they do make them, and they seem to work quite well. Of course, you did say "most of North America," so if you include Canada and the U.S. states that border Canada, where the cold is bone-chilling, yea, you're probably right.



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  #11  
Old 2/10/07, 11:39 AM
gmathias gmathias is offline
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Default Re: Electric Hot Water Heat

Thanks for your replies. It makes more sense that this would be a hot air system with the heat supplied through coils of heated water, but I share the concern that it will be sufficient for our PA climate. Of course, we're in a prolonged cold snap at this time. I wonder if there is a capacity measurement for the system. BTU's vs sq. ft. of living area? Anyone familiar with something like this?
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Old 2/10/07, 11:52 AM
homebild homebild is offline
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Default Re: Electric Hot Water Heat

There are hydronic hot water baseboard systems that exclusively use electricity to heat the circulating water.

They operate similarly to tankless water heaters immediately heating the water on demand as it is required.

Scroll down at this link:
http://oee.nrcan.gc.ca/publications/...er2.cfm?attr=4


There is no forced air component and I have seen them used in Pennsylvania, albeit rarely.

Last edited by homebild; 2/10/07 at 11:55 AM..
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  #13  
Old 2/10/07, 11:55 AM
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Default Re: Electric Hot Water Heat

It may be an electric hydronic boiler, I see these on occasion and they are quite efficient:






Equipment for Electric Hydronic Systems

DESIGN AND OPERATION
Electric hot water or hydronic systems deliver heat to a house by means of hot water. The three main components of such a system are:
1.
a boiler to heat the water;
2.
heating equipment – generally baseboard heaters or radiators – in most rooms, often installed against an outside wall; and
3.
a pump to circulate water from the boiler to the radiators and ensure that it flows back through the pipes.


Figure 5: Central boiler for an electric hydronic system


The boiler in an electric hot water heating system is compact. Its heating elements are immersed directly in the water (as in an electric kettle). Where space is limited, the boiler can be installed on a basement wall, in a closet, under a kitchen cabinet–it can even be hung from basement ceiling joists.
If you are replacing a boiler in an existing hydronic system with a new electric boiler, you can probably use the existing heat distribution pipes.

Last edited by Jason1; 2/10/07 at 12:02 PM..
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  #14  
Old 2/10/07, 12:34 PM
gmaher gmaher is offline
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Default Re: Electric Hot Water Heat

The next home we plan to build for our retirement stage of life will have hot water heat. The water tubes will be in the floor (called radiant heating, check it out) and the water will be heated with a natural materials burning boiler (they burn corn, barley, or wood pellets). Up until recently, due to the interest in ethanol made from corn, the price was very affordable as a heating fuel. When technology catches up, we will be making ethanol from cellulosic materials such as switchgrass, cattails, and other high cellulose plants (incidently cellulosic plants yield ethanol much more efficiently than does corn). But, even at the current rate of $3.50 per bushel for corn, and $2.80 per bushel for barley, it is still cheaper than oil, propane, or electricity. Do a search for "corn stoves" or "corn boilers" or "corn heating" and see what you'll be reading.
George Maher
Home - Safe Home, LLC
Fargo, ND
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  #15  
Old 2/10/07, 12:58 PM
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Roy D. Cooke, Sr Roy D. Cooke, Sr is offline
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Default Re: Electric Hot Water Heat

Quote:
Originally Posted by gmaher
The next home we plan to build for our retirement stage of life will have hot water heat. The water tubes will be in the floor (called radiant heating, check it out) and the water will be heated with a natural materials burning boiler (they burn corn, barley, or wood pellets). Up until recently, due to the interest in ethanol made from corn, the price was very affordable as a heating fuel. When technology catches up, we will be making ethanol from cellulosic materials such as switchgrass, cattails, and other high cellulose plants (incidently cellulosic plants yield ethanol much more efficiently than does corn). But, even at the current rate of $3.50 per bushel for corn, and $2.80 per bushel for barley, it is still cheaper than oil, propane, or electricity. Do a search for "corn stoves" or "corn boilers" or "corn heating" and see what you'll be reading.
George Maher
Home - Safe Home, LLC
Fargo, ND
Do a search here and see how many use this type of heating make sure they do live where other heating equipment is available .
See how long they have used it and how satisfied they are .
Many have done like you wish to do and have in time saw it is not as good as some say it is .
Roy Cooke. Been there done that and do not want to go there again.



Need help on inspection call my cell 613-827-2011

I like email Roycooke@hotmail.com

Never wrestle with a pig (however titled) as you just get dirty and the pig has all the fun.



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