What Is an ERV (Energy Recovery Ventilator)?
An ERV (Energy Recovery Ventilator) works like an HRV — exchanging stale indoor air for fresh outdoor air — but also transfers some humidity between the two air streams, not just heat. That makes it useful in climates with both hot-humid and cold-dry seasons, like Chicago.
Why It Matters to You
An ERV's humidity transfer can help balance a Chicago-area home's air between a humid summer and a dry winter, compared to an HRV, which only recovers heat.
Practical Guidance
Ask a technician whether an HRV or ERV is the better fit for your specific home and climate concerns — the right choice depends on your home's humidity patterns, not a one-size-fits-all answer.
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