Re: Ground Source Heat Pumps
From: John Beutler (
Date: Tue, 24 Oct 2017 06:23:56 -0700 (PDT)
Hi Trudy:

John Beutler from Liberty Village here. We had ground source installed quite a 
while ago in each unit and have been very happy with performance overall. 
However, for reasons that are not entirely clear to me, the cost of comparable 
systems has roughly doubled in 17 years. Regular heat pumps have improved 
markedly in efficiency and quietness in that time. Photovoltaics have dropped 
hugely in price. On the other side, an Alphabet company, Dandelion launched 
recently with the goal of reducing the cost of ground source installations, but 
so far they are only operating in the Hudson Valley of NY.



Sent from my tricorder

> On Oct 23, 2017, at 9:54 PM, Trudy Macdonald <trumac [at]> wrote:
> Hi Friends,
> I am a member of Bay State Commons a Community in the process of designing 
> and building our site in Malden. MA.  We are considering using Ground Source 
> Heat Pump to heat and cool our building.  Has anyone built with a GSHP in the 
> past few years?  If so can you share your experience.  
> The only other cohousing group I know of is Cambridge Coho.  They installed 
> theirs 20 years ago and have lots of problems.  
> I assume the technology has improved over the past 20 years so would like to 
> hear from a group that has installed it in the past 5 years.
> Thank you so much for any information you can provide.
> Trudy
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