GREENLAND, N.H. — Zehnder America announced it is now locally sourcing in the United States both its new ComfoFlex ducting and register boxes as part of its comprehensive approach to providing a heat ...
Ducting energy recovery ventilators (ERV) can be challenging for HVAC contractors because no two installations are the same. ERVs bring in outdoor air that’s energy-efficiently preheated or precooled ...
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