Which of the following systems is best for removing pollutants indoors?

To determine the best option for removing indoor pollutants, it's essential to understand how Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs) function. Both systems are designed to improve indoor air quality by facilitating the exchange of stale indoor air with fresh outdoor air while recovering energy to maintain temperature efficiency.

HRVs are particularly effective in colder climates as they transfer heat without adding moisture. They effectively lower indoor pollutant levels by providing a continuous supply of fresh air, thus diluting contaminants produced by activities such as cooking, cleaning, and even off-gassing from furniture and building materials.

ERVs serve a similar purpose but also transfer moisture between the incoming and outgoing air streams. This makes them particularly advantageous in climates where humidity control is a concern. They not only help to manage indoor air quality by removing pollutants but also assist in regulating the indoor humidity levels, which can contribute to the overall comfort and health of occupants.

Both systems contribute to better indoor air quality by continuously replacing stale air with fresh air, thus effectively lowering pollutants. Therefore, using either an HRV or an ERV can significantly enhance air quality indoors. Given that both systems are equipped to handle the influx of fresh air and the expulsion of polluted air, they