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Any geothermal techs or experts?

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Any geothermal techs or experts?

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Old 03-22-2016, 11:34 AM
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Default Any geothermal techs or experts?

Specifically residential. If so, please pm me. Got a quick question or two. Thanks.
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Old 07-16-2016, 05:35 AM
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Didn't get any responses so I'll post my question and see what I get back,

Our 2200sf home is 18 years old. When we built it we chose geothermal heat pump for hvac. Had 5 trenches dug, coolant lines are coiled and buried in them. All in all one of the best investments we've ever made and would do it again.

My question is, does it make any sense to replace all the mechs now, before the $3k federal tax credit expires end of the year? It's running perfect and hasn't cost me a dime except for preventative maintenance in its life but it is 18 years old. Two local companies have given me prices in $9-10k range which shocked the heck out of me. At this point our plans are to stay here for a while. Thanks.
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Old 07-16-2016, 05:59 AM
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Of it ain't broke don't fix it. Spend $10K plus for a $3K credit? Meh, no thanks.
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Old 07-16-2016, 06:01 AM
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What type and brand of unit do you have?
Is it water to water with a separate air handler or a packaged all in one unit?

Most HVAC equipment is usually around a 15 year design life cycle. Best brands maybe a little longer but you are reaching the end. I have never encountered a 20 year old heat pump if that tells you anything.
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Old 07-16-2016, 06:30 AM
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Originally Posted by s_ebels View Post
What type and brand of unit do you have?
Is it water to water with a separate air handler or a packaged all in one unit?

Most HVAC equipment is usually around a 15 year design life cycle. Best brands maybe a little longer but you are reaching the end. I have never encountered a 20 year old heat pump if that tells you anything.
Waterfurnace. All one unit, closed loop, forced air, desuperheater for domestic water (tempers water before hot water tank).

Originally Posted by Badbagger View Post
Of it ain't broke don't fix it. Spend $10K plus for a $3K credit? Meh, no thanks.
My initial thoughts too. Just trying to gather more info to make sure I'm not missing something.


Thanks guys.

Last edited by kone; 07-16-2016 at 06:44 AM.
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Old 07-16-2016, 06:31 AM
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The life of a water source heat pump is much longer than 15 years. I am assuming you have a closed loop system. I would leave it alone. I recently replaced a 30 year old air to air heat pump, but that is very rare, but they can last a long time. I have also replaced a 12 year old water source heat pump, but they were open loop using well water that caused the heat exchanger to fail.
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Old 07-16-2016, 06:41 AM
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Originally Posted by N D H View Post
The life of a water source heat pump is much longer than 15 years. I am assuming you have a closed loop system. I would leave it alone. I recently replaced a 30 year old air to air heat pump, but that is very rare, but they can last a long time. I have also replaced a 12 year old water source heat pump, but they were open loop using well water that caused the heat exchanger to fail.
Yes, closed loop. Thanks for the advice.
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Old 07-16-2016, 08:46 AM
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Originally Posted by kone View Post
Yes, closed loop. Thanks for the advice.

Closed loop and running fine I would not touch it. Depending on location most standard systems condensing sections get deteriorated to the point of needing replacement at around 15 to 20 years. The coastal locations being the worst.

Not much to go wrong unless you get an evaporator or condenser leak. That would most likely indicate its time to change out the system. Run it till it quits.
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