Frequently Asked Questions

You can determine the type of appliance you have by opening the unit and looking at the core within. An HRV has a metal core, while an ERV has a non-metallic core.

Alternatively, the appliance type can be determined by your model and serial number.

For instructions on how to properly use your wall control please refer to your owners’ manual.

Or see instructions for your wall control in the following video.

For instructions on how to properly use your timers please refer to your owner’s manual.

Or see instructions for your timers in the following video.

The model and serial of your appliance is listed on a label on the exterior of the unit. Be sure to check all sides as the label may be placed on the side of the unit that is against the wall.

Your ERV/HRV may run continuously on high speed if:

• The main control is set for high speed
• A timer has been pressed for high speed override
• The set point for RH (Relative Humidity) is below the actual relative humidity of your home
• Other auxiliary controls or timers are engaged in high speed
• The appliance is in ‘Defrost’ mode. Your ERV / HRV automatically cycles into defrost mode when temperatures fall below -3 C (27 F).

Please reference your homeowner’s manual for instructions on how to make mode and fan speed adjustments.

If there is no high-speed demand from any of the above and the unit is still running on high speed, contact your service contractor.

A flashing ‘RH’ indicates the appliance is operating on high speed in the Dehumidistat function. Once the indoor humidity level reaches the RH set point, the ERV/HRV reverts to its previous set speed and operational mode.

Your ERV/HRV is not a dehumidifier. You will need to use a dehumidifier and/or a properly sized cooling unit to control high humidity problems.

To reduce dryness in your home:

• Make sure the relative humidity is not set too low and is not causing the appliance to run on high speed all the time
• Reduce the fan speed of the appliance
• Use the intermittent ventilation setting mode (20/40 or 10/50)
• Install a humidifier

 Please reference your homeowner’s manual for instructions on how to make mode and fan speed adjustments.

The most popular setting for residential applications is continuous low speed ventilation.

Please reference your homeowner’s manual for instructions on how to make mode and fan speed adjustments.

Your ERV/HRV may not be working if there is no active power source. Confirm:

• The breaker is on
• The ERV/HRV is plugged into a live power outlet
• The main control is displaying a mode and fan speed

 If your ERV/HRV is still not functioning after confirming its power source is active, contact your service contractor.

A flashing light on the timer and/or main control usually indicates a wiring, voltage or communication error. Please contact your service contractor to resolve the issue.

It is important to inspect and maintain your ERV/HRV on a regular basis. The label on the core inside your ERV/HRV notes maintenance instructions. Alternatively, the homeowner’s manual specific to your model provides a maintenance routine for you to follow. Please visit the product section on our website to find your unit, in the downloads section there you will find the homeowners manual.

If your ERV/HRV model is no longer listed on our website, please submit an online request for a manual. 

Manuals for current models can be found on the product’s detail page. View All Products

If your ERV/HRV model is no longer listed on our website, please submit an online request for a manual.

Yes, our ERV/HRVs are designed to be used for energy-efficient fresh air/ventilation all year round.

Your ERV/HRV will occasionally have some condensation discharged from the drains. Most moisture is directed outdoors with the exhausted air so it isn’t unusual for there to be no water in the drains.

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We are the manufacturer. If you require service, please contact a contractor for questions regarding servicing.