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COVID-19 Update:

To protect the health of our staff and our customers, Efficiency Vermont offices are closed to the public. In the meantime, our customer support team is available to help you remotely. Contact us at (888) 921-5990 or

We have cautiously begun scheduling project related site visits when required. You can find more information on our safety protocols here.

Drain Water Recovery Training Video


Heating, Cooling & Ventilation - Intermediate | 34 min training
Professional Credits: .5
June 1, 2020

Water heating comprises a large portion of the total household energy use, learn how to recover energy that’s going down the drain every time you use hot water. Drain water heat recovery devices capture the energy from hot water going down the drain and use it to preheat water feeding the hot water heater. Learn how to maximize the potential of this device by using it as part of a whole house water heating system and using equal flow plumbing to achieve peak efficiency.

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