At what temperature is my HRV/ERV going to shut down?

12/27/2017

There are several variables that influence the point at which the fans are shut off, such as outdoor air temperature, return air temperature, whether the unit is an HRV or ERV, system size and cfm, use of boost mode, etc. The unit is programmed to monitor all of these variables, and depending on the combination of factors it’s possible for the fans to be shut off anytime the outdoor temperature is below freezing. But in general, an HRV with an

Read More

Why do I have an A7 error code on my controller?

12/27/2017

The most common source of an A7 error code is when a unit with an internal pre-heater turns off the fans because the temperature has dropped below the safe operating limit. This is exactly what we want the unit to do in these conditions so that the HRV or ERV core doesn’t freeze. The pre-heater works to avoid or delay a necessary shut-down, but if the temperature gets cold enough even the pre-heater isn’t enough to protect the core, so

Read More

What Is the warranty policy of Zehnder America?

8/17/2017

Zehnder America, Inc. Limited Warranty When installed according to the applicable Zehnder America, Inc. Installation instructions and the applicable local, state, and federal building codes and unless specified otherwise, all Zehnder America, Inc. products sold in North America carry a two (2) year LIMITED WARRANTY (from the original date of shipment by Zehnder America, Inc.) covering defects in the original manufacturer.  The warranty does not apply to damage from accident, misuse or alteration; or where the equipment has been improperly installed,

Read More

How easy is the ERV/HRV system to install?

1/31/2014

Because Zehnder designs whole-house ventilation systems, components easily fit together. This integrated functionality allows for a more rapid system installation saving both time and money for both the installer and the end user.

Why should I install a ventilation system?

1/31/2014

A user-independent supply of fresh air is necessary as buildings become increasingly air-tight. Today’s new builds and refurbishments demand ventilation concepts for protection against moisture, which prevents mildew formation and helps retain the value of the property. Advantages include energy savings of up to 50%, pollen-free air for allergy sufferers and generally improved comfort.

Does a ventilation system increase energy consumption?

1/31/2014

A ventilation system with heat recovery considerably reduces your energy consumption. The energy won from the extract air is approximately 15 – 20 times greater than the energy consumed by the highly efficient DC motors of the ventilation device.

Can the air in a ventilation system become too dry in winter?

1/31/2014

When cold outside air is heated to room temperature its relative humidity drops and the air feels dry. The same applies to window ventilation. Zehnder has the enthalpy heat exchanger for this application. It provides heat recovery and recovers moisture from the extract air.

How can dust in the air pipes be prevented?

1/31/2014

Dirt particles in the outside air are removed by the filter in the ventilation device. In addition, extract air filters and the special, smooth internal walls in the air ducts prevent dirt deposits. The distribution system is designed to allow easy cleaning of the air ducts.