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  1. #1
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,670

    Maintenance on geothermal system?

    Still curious about this whole geothermal thing and am still entertaining the idea of installing one within a few years.

    Talking to a friend the other night and he claimed that geothermal systems were "High Maintenance"??!!??

    Now I can't see too much maintenance that would need to be done to a properly installed and set up system, but maybe I'm wrong.

    Can anyone tell me what regular maintenance costs would be over and above a normal split system heat pump?

  2. #2
    Join Date
    Oct 2008
    Location
    OFFICES IN : ARIZONA - NEVADA - TEXAS
    Posts
    258
    wHO'S YOUR FRIEND ! Geo systems have fewer components ! Many years ago everyone was against heat-pumps , because no one understood them , Same as the air bags, same as the catalytic converters, same as the hybrid, and same as the Geo systems..

    One day most of the systems will be Geo units do to the fact that they are easier to maintain and are much more cost effective to operate, currently in many states they are the number one sellers -- Do however shop around before you buy.., some systems are a better bang for your buck..
    "Rock-n-Roll " Ain't noise pollution..

  3. #3
    Join Date
    Sep 2007
    Location
    NC Coast
    Posts
    2,604
    open loop with questionable water quality will be more costly than closed loop. The chance of a clogged heat exchanger and crap getting into your solenoid valves and allowing them to leak buy or not open will IMHO make them more repair prone. Water Furnace has some good systems out their but they are costly up front. They seem to have a great customer service from what I have seen. (we had at my old company send a brand new envision unit sent to a customer because his 3rd compressor had just failed.) old sys was about 6 or 7 yrs old.
    Silent Service........ Death From Below!

    Somewhere in Kansas, a town found a village idiot!

  4. #4
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,670
    Quote Originally Posted by INTECHBILL View Post
    wHO'S YOUR FRIEND ! Geo systems have fewer components ! Many years ago everyone was against heat-pumps , because no one understood them , Same as the air bags, same as the catalytic converters, same as the hybrid, and same as the Geo systems..

    One day most of the systems will be Geo units do to the fact that they are easier to maintain and are much more cost effective to operate, currently in many states they are the number one sellers -- Do however shop around before you buy.., some systems are a better bang for your buck..
    Y'know that guy who knows EVERYTHING? This guy knows a little more than HE does.

    He is also comparing someone else's experience with a 25-30 year old system with newer systems.

    I figured I would ask. I didn't think that a closed loop system would be a big problem as far as PM goes.

  5. #5
    Join Date
    Jan 2007
    Posts
    1,359
    We recommend that our customers have their wells re drilled every 3 years just to keep it efficient !!

  6. #6
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Quote Originally Posted by EarthLoop View Post
    We recommend that our customers have their wells re drilled every 3 years just to keep it efficient !!
    I hope your joking?

    If your not please explain.
    Karst means cave. So, I search for caves.

  7. #7
    Join Date
    Sep 2005
    Location
    Texas
    Posts
    2,793
    the single biggest problem with geo is DESIGN. The depth of the loop wells and spacing is very critical. Needless to say the fix of such problems is very costly.

  8. #8
    Join Date
    Mar 2010
    Location
    Fayetteville, AR
    Posts
    5
    There is not a lot to do a pm on a geo. I will say that you want to have a closed loop. A lot of people will tell you to run methanol in the loop to keep it from freezing but the down side is it will kill your pump. Put glycol in the loop tests it every few years and keep it to about 17% and you will be fine

  9. #9
    Join Date
    May 2005
    Posts
    161
    Quote Originally Posted by Lawrence a View Post
    There is not a lot to do a pm on a geo. I will say that you want to have a closed loop. A lot of people will tell you to run methanol in the loop to keep it from freezing but the down side is it will kill your pump. Put glycol in the loop tests it every few years and keep it to about 17% and you will be fine
    How does methanol kill a pump?

  10. #10
    Join Date
    Jun 2009
    Location
    New Haven,MO
    Posts
    34

    Methanol good

    You will have to prove to me that methanol is bad. Glycol breaks down, pumps sieze up. Been using methanol 20 years and do not have any problems related to our closed loops.

  11. #11
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,670
    Ok. On the topic of methanol vs glycol.

    Any empirical evidence as to one being better than the other?

    You state the glycol breaks down. Does methanol?

  12. #12
    Join Date
    Jun 2009
    Location
    New Haven,MO
    Posts
    34

    Methanol

    It doesn't breakdown. That is what we were told when we got into geo 20+ years ago and we haven't had a single system with loop conditioning breakdown problems.

  13. #13
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,670
    Explain this, then, if you will.

    A friend of mine was told that the loop fluid, some sort of alcohol, was bad leading to poor system performance.

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