GESI Guam
GESI PRODUCT WARRANTY – Our local product warranty means NO HASSLE, QUICK TURN AROUND AND IMMEDIATE RESPONSE.
  • Exclusive Distributor Therm X
  • Long Term Service & Maintenance
  • US/UL Certified 
  • Long Term Warranties
  • Large Selection of Products
  • ETL/DLC Certified
  • Licensed & Insured
  • 9 Years Specializing in Renewables
  • Guam Trusted Trader

ENERGY AUDITS

THERM X/SOLAR THERMAL
HVAC & REFRIGERATION

LED LIGHTING
FIXTURES & LAMPS

VRF CENTRAL
AIR CONDITIONING SYSTEMS

SOLAR PHOTOVOLTAIC

SOLAR STREET LIGHTING

“Friendly, efficient, punctual, who could ask for more?”
– Mr. Scott, Tamuning