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Re: overwhelmed was: ants, now geothermal

One of our neighbors has the closed loop heat pump like yours; another uses
the well system.  Right now, with our lack of water, I cringe at seeing the
water from the well pour into the TN River.  These systems work
economically, especially the closed loop as not much water is wasted.  When
I replaced our system several years ago, I considered the water system but
our water is so hard that I decided to just go with the air system.  

> [Original Message]
> From: Cathy Carpenter <cathy.c@insightbb.com>
> To: <gardenchat@hort.net>
> Date: 6/17/2007 10:35:35 PM
> Subject: Re: [CHAT] overwhelmed was: ants, now geothermal
> We have a "Water Furnace". Ours is a closed loop system going into  
> the farm pond next to the house. Other options could be horizontal or  
> vertical earth loops. There are also open loop systems, using ground  
> water, when good quality well water is available at a reasonable  
> pumping depth, along with a good water discharge system (ditch, field  
> tile, pond, or stream). Our closed loop is filled with a water- 
> antifreeze solution which is continually circulated through. If we  
> need cooling the solution's heat is dissipated as it flows through  
> the pond. When we need heat, it is likewise absorbed from the pond.  
> Of course we have supplemental heat and air conditioning, but these  
> do not have to use as much energy because we borrow so much from the  
> earth. In essence our heating and cooling systems receive a "boost".  
> The bottom line: for our house of 3000+ square feet, we pay about  
> $80.00 per month for heat or air conditioning. Yes, we love it, and  
> should we move, we would definitely want a home that is geothermal.  
> It is more expensive than regular systems, but pays for itself in  
> lower heating and cooling costs and should last 20 - 30 years. We  
> have forced air heating and cooling with it. Hope this helps.
> Cathy, west central IL, z5b
> On Jun 17, 2007, at 3:30 AM, Marge Talt wrote:
> >>
> > -----
> > Cathy, what kind of system do you have?  I understand there are
> > several ways to do this.  How do you like it?  What kind of back up
> > heat do you have and do you find it actually reduces heating bills?
> > How is the heat delivered?  Forced air, hot water, radiant floor???
> > Thanks for any input on this one.
> ---------------------------------------------------------------------
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