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Ventilation & Indoor Air Quality
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Balance Indoor Air with Panasonic ERVs

What is an ERV?

An ERV is a central ventilation system that provides fresh, filtered outside air and removes stale indoor air – balancing the humidity within the room space. Inside the unit, two separate air streams pass through a heat-exchanger core, transferring energy and moisture without mixing.

The result? Fresh air that's already close to indoor temperature and humidity, boosting comfort and efficiency.

An ERV–airflow–diagram shows how incoming fresh air is pre-treated by transferring heat and moisture from the outgoing air. It can help reduce the load on an HVAC system—especially in terms of cooling and dehumidifying.

What Kind of ERV Do I Need?

Watch how Panasonic’s latest ERV models are designed to meet key ventilation standards, recover heat and moisture efficiently, and deliver quiet, reliable performance for every home.

How Do ERVs Work?

Learn how ERVs continuously replace stale indoor air with fresh, filtered outdoor air—removing harmful pollutants before they reach your lungs.
  • VOCs from paints and cleaning products
  • Mold spores and moisture that lead to buildup
  • Allergens like dust, pollen, and pet dander
  • Airborne bacteria and viruses that circulate longer in dry air

Frequently Asked Questions

  • ERVs are typically installed by connecting the unit to your home’s HVAC system or using dedicated ductwork. The unit brings in fresh outdoor air and removes stale indoor air, while transferring heat and moisture between the two.

    Panasonic ERVs offer flexible top or side port options, making installation easier in a variety of home layouts. For best performance, we recommend having a licensed HVAC professional handle the setup to ensure proper airflow and compliance with ventilation codes.

  • ERVs and heat recovery ventilators (HRVs) both do the same core job — replacing stale indoor air with fresh outdoor air while saving energy. The key difference? Moisture. ERVs transfer both heat and moisture between air streams, helping your home stay humid in the winter and drier in the summer. HRVs only transfer heat, making them a better fit for colder, drier climates where extra humidity isn't needed.

  • ERVs support a healthier, more energy-efficient home. By recovering heat and moisture from outgoing air, Panasonic systems reduce energy demand and limit HVAC overuse—helping you cut utility bills and reduce your carbon footprint. It’s fresh air, with a lighter impact.

    • Saves energy by reducing HVAC load
    • Helps meet LEED and net-zero goals
    • Cuts utility bills while reducing emissions

Discover More About ERVs

Learn how Energy Recovery Ventilators work, where they fit in your home, and why they’re essential for cleaner air, better comfort, and long-term energy savings.