What should be used to cover the exterior terminations of HRVs and ERVs?

Using metal screens is the best choice for covering the exterior terminations of Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs). Metal screens serve several essential functions in this context.

Firstly, they provide a physical barrier that helps prevent the entry of larger debris, such as leaves, twigs, and insects, which can obstruct airflow and reduce the efficiency of the ventilation system. By keeping these elements out, the metal screens help maintain optimal performance and longevity of the HRV or ERV.

Additionally, metal screens are durable and weather-resistant, making them suitable for outdoor applications where they may be exposed to various environmental conditions. Unlike other materials that may degrade or rust over time, properly installed metal screens offer a reliable and long-lasting solution.

Moreover, the use of metal screens does not hinder airflow significantly, allowing the system to function efficiently while still providing protection. Ensuring air can flow freely is crucial for maintaining the balanced air exchange process that HRVs and ERVs are designed to facilitate.

In summary, metal screens provide the necessary protection without compromising the efficiency of ventilation systems, making them the appropriate choice for covering exterior terminations.