Request a Commissioning

The optimum operation of Zehnder ComfoSystems heat recovery ventilation systems requires proper design, installation, and commissioning of these systems.  The final step in this process is the commissioning or QA (quality assurance) of your system.  Zehnder America, Inc., with qualified and trained staff or QA agents of the US and Canada, provides commissioning services for builders and homeowners who have installed our complete ventilation systems.  This process assures that the installation meets the design criteria used to maximize comfort, efficiency, proper ventilation, and operation.

Zehnder America utilizes a network of professionals to provide this service, and it is important that the following checklist is completed and accurate in order to allow for the commissioning/QA process to be completed properly.

If the QA agent arrives at the site and this checklist is not accurate and the system is not ready for commissioning, there will be a charge for a “No-Show” or failure to perform of $165, plus travel expenses.

Additionally, if commissioning is not completed in a timely manner and the failure to commission contributes to or causes a mechanical failure to the installed Zehnder equipment, the warranty may be affected, and the homeowner may be responsible for repair.

Please complete the checklist below, and press the Submit your Request to send to Zehnder America. You will be contacted by our program administrator within a few days to acknowledge your request and with any questions they may have. The administrator will then assign your request to an appropriate agent who will contact you to schedule a date.  Please allow for some leeway in scheduling so that this professional can optimize his travel and time with other duties that he/she may be scheduling in your area.

Note that certifying Passive House projects requires your PH Consult to complete an “Additional Information Request” conforming to the ventilation requirements of PHPP or WUFI® Passive in order to proceed.

Request a Commissioning

Contact Information

If you do not have an email address, please call 1-603-601-8544 x 110

Project Location

Certification Requirements

Is this project being considered for ANY certification program? *
This information was requested during the quoting process, but things change during a project, so we’re just double-checking.

Reporting Requirements

Does this project require any specific reporting requirements for commissioning, e.g. for a certification program or for the local building officials?
The commissioning coordinator or commissioning technician will contact you to discuss in detail.

Pre-Commissioning Checklist

HRV/ERV fully installed and connected to ducting system. *
HRV/ERV plugged in to 240V/60Hz power, and in running condition. *
Control wired, and system operating at control unit on wall. *
Where applicable, boost switches connected and operating. *
All ducts connected, system installed per design specification. *
All Diffusers and Register Covers installed with drywall up or a flat surface to fit a 16"x16" flow hood around the register. *
All Diffusers and Register Covers accessible for measurement of flows by agent using a flow hood. *
Ladder or equiv. available so that agent can access each supply and return point with flow hood. *
Intake and exhaust grills installed at outside of dwelling. *
Home substantially completed, with doors and windows installed throughout, and finish work substantially completed. *
Filters in HRV/ERV clean, or new set available on site. *
Have there been any field changes to the ventilation strategy that was laid out in the quote designed by your Zehnder Representative? *
It is preferable that the homeowner or builder (or representative) is on site during commissioning. *
When scheduling, please remember that no one should be going in or out of the home during the commissioning to ensure that the air flow rates are being measured accurately. *
If this checklist is not accurate when the Commissioning Agent/QA Inspector arrives, and he/she are unable to perform their work, you will be charged a no-show/failure to perform fee of $165 plus travel expenses.