What both systems do
HRVs and ERVs exchange indoor and outdoor air while recovering heat between the air streams. An ERV can also transfer moisture. These systems are ventilation equipment, so they have a different purpose from a filter that cleans recirculated indoor air.
The right choice depends on the house
Climate, occupancy, moisture levels and the building’s airtightness all affect the design. An ERV is not a stand-alone dehumidifier, and neither system repairs a leak or removes an established moisture source. Describe when the house feels stuffy and whether condensation occurs. A ventilation assessment should consider the cause as well as the symptom.
Installation and upkeep matter
Ask how the airflows will be balanced, how controls will work and where outdoor intake and exhaust openings will be located. Filters and the core need attention according to the manufacturer’s instructions. Keep accessible outdoor openings clear without modifying the installation. Comfort Nest can help assess a replacement or new ventilation system and explain how it fits the rest of your HVAC equipment.