![](http://www.alamy.com/thumbs/6/ADA47F67-F280-48D0-912C-480346221A24/2HX9DR2.jpg)
diagram of a classic colonial house with planar or areal ground source heat pump as source of energy for heating in floor heating
Size: 6222px × 6193px
Photo credit: © Slavomir Valigursky / Alamy / Afripics
License: Royalty Free
Model Released: No
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