Hollis Energy Companies 2 companies listed

VIRSTAR Geothermal Energy

Basic Member
Since Oct, 2021

Specializing in Water-Source Heat Pump Systems since 1978, the VIRSTAR Geothermal Energy HVAC Group can provide a total solution, from system sizing and layout through installation supervision, for new…

Virstar Corporation

Basic Member
Since Apr, 2020

Geothermal Energy HVAC Group   Specializing in Water-Source Heat Pump Systems since 1978, the VIRSTAR Geothermal Energy HVAC Group can provide a total solution, from system sizing and layout through…