Choosing Between ERV and HRV for Your Passive House
By Graham Mann | Published: 12/26/2025
Compare ERV and HRV for Passive Houses: climate fit, moisture control, costs, efficiency, and maintenance to pick the best whole‑house ventilation system.
Choosing Between ERV and HRV for Your Passive House When deciding between an ERV (Energy Recovery Ventilator) and an HRV (Heat Recovery Ventilator) for your Passive House(https://en.wikipedia.org/wiki/Passivehouse), the choice largely depends on your climate, indoor humidity needs, and budget. Here’s the quick breakdown: - ERVs manage both heat and moisture, making them ideal for humid or very dry climates. They help stabilize indoor humidity, reducing strain on heating and cooling systems. - HRVs focus solely on heat recovery, making them better for cold, dry climates or homes with high indoor humidity from activities like cooking or showering. Key Points to Consider: - Climate: ERVs are better for humid or mixed climates, while HRVs work well in colder, drier regions. - Cost: HRVs cost $600–$1,800; ERVs range $800–$2,000+. Installation costs can add $3,000–$10,000. - Energy Efficiency: Both systems recover 60–95% of energy from outgoing air, but ERVs also recover moisture. - Maintena...
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