Products We Offer

Systems To Keep You Comfortable

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Products We Install


There is very little difference in the air conditioning equipment available in our area, but there is a huge difference in the knowledge and attitude of the installers & service techs.

At E&J Geothermal we are committed to installing your new system to factory specifications with a smile.


Stay comfortable all year long. E&J Geothermal are ready to keep you heating and cooling systems working perfectly.

Enjoy the Benefits of Planned Maintenance

E&J Geothermal knows how much of an investment a new heating, air conditioning, air quality or geothermal system can be. That's why we want to help you protect your investment!

Click the button below to learn more about our maintenance plan!

Service Agreements

Greenstar Combi Gas Boilers

"Combi" (combination) unit with space heating and integrated water heating in one highly efficient' compact unit. With special insulation to ensure ultra quiet operation and the exclusive keypad safety lock feature to prevent unwanted tampering with heating controls' this unit is the ideal "green" upgrade for detached & terraced houses and is also suitable for apartments.

  • Aluminum-Silicon heat exchanger delivers high efficiency - 96.8% with low temperature applications (94.3% AFUE)
  • Low NOx emissions ahead of 2012 SCAQMD regulations
  • Simple' intelligent control options optimize efficiency and fuel consumption
  • Low electrical consumption when the boiler is in standby mode
  • Electronic Ignition
  • Available as NG or LP
  • Special insulation ensures ultra-quiet operation
  • Compact dimensions and built-in frost protection offer flexibility for location of installation
  • ECO mode for energy saving fuel consumption
MODELInput MBtuHOutput MBtuHAFUEDimensions
HxWxD
Water Content
Gal.
Weight
Lbs.
ZWB28-3 Greenstar Combi 100100.8 89.4 96.0 33.5 x 17.4 x 13.9 0.95 110
ZWB42-3 Greenstar Combi 151 151.6 134.4 94.3 33.5 x 17.4 x 13.9 0.95 110
ZBR16-3 Greenstar 5757.2 50.8 96.1 33.5 x 17.4 x 13.9 0.95 104
ZBR28-3 Greenstar 100100.8 89.4 96.0 33.5 x 17.4 x 13.9 0.95 104
ZBR35-3 Greenstar 131131.9 116.7 96.0 33.5 x 17.4 x 13.9 0.95 104
ZBR42-3 Greenstar 151151.6 134.4 94.3 33.5 x 17.4 x 13.9 0.95 104

Warranty Information

  • Heat Exchanger - Lifetime Warranty
  • All Parts for 60 months -
  • Limited Labor for 60 months -

Available Documents