Zehnder
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Preparing to Install an ERV in a Not-So-Old House
My 60-year-old house is about to get a Zehnder ERV
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A Heat-Recovery Ventilation System for the Potwine Passivhaus
A Zehnder unit brings in fresh ventilation air while simultaneously exhausting stale air
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My Earth Tube Story
Buried ventilation ducts represent an absurdly simple and cheap source of limitless free energy
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Commissioning Our Heat-Recovery Ventilator
The supply and exhaust airflows of a ducted HRV have to be measured and balanced after installation for the system to function properly
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Our Top-Efficiency Heat-Recovery Ventilator
We expect our state-of-the-art HRV from Zehnder to provide fresh air to our home, with very low energy consumption, for years to come
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A Few Product Highlights from GreenBuild
The GreenBuild conference, as usual, was the place to find out about innovations in green building products
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A ‘Magic Box’ For Your Passivhaus
Can Americans buy a combination appliance incorporating an HRV, heat pump, and water heater?
