Zehnder Q unit ERV/HRV core removal. How to: Pull the core.

Zehnder ventilation units are easy to work on if and when they need maintenance OR repair.

[@PassiveHouseCody]

Great tip! Thank you!

[@walnutcontractors5661]

If you don't put the unit into service mode the core is potentially locked by bypass. Hold the shift key for 10 seconds, enter the installer password ( depends on region ), goto installer menu / main board / service mode and then unplug the unit.