The Zehnder HRV Project

With all the remodeling we have done to our house over the last ten or so years, we have been slowly tightening up the building envelope. We also both have bad allergies. We even had a dog that had allergies so bad, he got regular allergy shots. So one of our remodeling projects that has been on the radar for some time, is the addition of an HRV (Heat Recovery Ventilator). I won’t go into all the specifics, as that is what Google is for, and I have probably read all of the top 10 pages of results several times. So, in preparation of ordering up the unit, we install the Awair indoor air quality meter. After several weeks of data, it was clear we need mechanical ventilation in our home.

Several months ago, I went on the Zehnder website and requested a quote. A week or so later I was provided a quote, and a specification sheet with the expected performance data for my home. After watching all the installation videos and reading all the installation documents, I was convinced I could install the unit myself. Zehnder is one of the few HRV systems made for DIY and adds profession commissioning of the system when the homeowner completes the installation, to make sure the system performs as designed.

I made a bunch of measurements, decided placement of the unit, and ordered the system up. My distributor is Small Planet Supply in Tumwater, WA, about an hour and a half north of here. 2 days later a freight truck dropped off the system at my work. I loaded the 2 pallets work of product into my trailer, for the trip back to my house.