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Natural ventilation system using no energy

EnergySage Customer
Quick Facts
Energy Needs Met

75% to 99%

of air conditioning


What You Need to Know


Earthtubes carry fresh air into house without power. Summer air cooled naturally on way in; winter air heated naturally on way in.

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annual savings
Ryan Horton

Residential|Energy Efficiency

Rivera Greens
annual savings
Rivera Greens

Single-Family Residence|Solar PV

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