Martin Energetics—  Consulting services for residential energy efficiency
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Checklist of concerns before a Ground Source Heat Pump 
is installed on your home--
Retrofits are sometimes easy and sometimes not.  But they can pay big dividends in comfort and savings if practical and well-planned.    Making sure you pick all the "low hanging fruit" through weatherization and other savings measures FIRST is best.  Using a licensed contractor with certifications appropriate to HVAC and Ground Source installation is the smart way to go.

Here is a slideshow featuring FIVE items before pursuing a GSHP retrofit.  
Click in the upper left of the blue box to play (or pause).  The automatic viewing time is set for 9 seconds and re-runs until you click to stop it.
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