FAQs for HRV & ERVs

Frequently Asked Questions for Heat and Energy Recovery Ventilators

Please review the FAQs listed below for the most commonly asked question. Please feel free to contact Air Venting Solutions if you have unanswered concerns.

Q: What is the Warranty for an ERV or HRV unit?

A: All products are warranted by the manufacturer. Please see Warranty listed on the Spec Sheet.

Q: Isn’t incoming air dusty?

A: No. Make-up air or incoming fresh air is filtered prior to going through the heat exchanger. Most ERV or HRV units now come with washable filters. Since filters are washed and dried before reinserting back into the unit, it is recommended you keep a spare filter(s) on hand. Filter should be washed as needed but never longer than twice per year.

Q: Having gone through the ERV or HRV, should fresh air be dumped back into a return air line?

A: No, fresh air coming from the ERV or HRV unit should be distributed in larger rooms throughout the home. Example – Great room, Kitchen, dining and bedrooms.

Q:  Where should the ERV or HRV pull exhaust air from inside the home?

A: Exhaust air should be pulled from rooms where high humidity or odors most commonly occur. Example – Rooms with a bathtub or shower, toilet rooms, utility rooms or basements are the best rooms to exhaust from. Exhausting from these rooms will not only remove the unwanted moisture and odors, as the air is exhausted it will be replaced with fresh clean air. 

Q: Is the unit noisy?

A: The unit should be centrally placed inside the envelope of the home - most generally in a closet location. ERV or HRV units are very quiet and should never be heard. 

Q: Will an ERV or HRV increase my energy usage?

A: If properly sized, an ERV or HRV should actually reduce the amount of energy required to maintain a comfortable and healthy environment within the home. Energy from the exhaust air is extracted and placed back inside of the home by way of the fresh air supply thereby reducing the amount of HVAC run time.

Q: Why should I install and ventilation system in my home?

A: Air pollution found within most homes is far greater than outside air. It is therefore critical to exhaust these pollutants (formaldehyde, VOCs, mold and mildew caused from excessive moisture, cooking odors and even carbon dioxide from breathing) to maintain a healthy environment within a home. Neglecting to ensure adequate fresh clean air could be the cause for many illnesses.