Geothermal Heat Exchangers by Zehnder America

Geothermal energy is collected in the fluid in the tubing and used to pre-heat or pre-cool the supply air before entering the ventilation device.


The ground source heat exchanger ComfoFond-L is designed to temper incoming air to the CA 350, CA 550, Paul by Zehnder Novus 300 and Paul by Zehnder Focus 200. During cold winter weather, the incoming air is warmed to help prevent frost and increase efficiency. During hot, humid summer periods the incoming air is cooled, and some moisture is removed. Controls are integrated for the ComfoAir units while the Novus and Focus units utilize an external controller and power connection allowing for easy installation and flawless operation.

Product details

Heat Recovery Ventilators & Energy Recovery Ventilators
Zehnder America
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