A Heat Recovery Ventilator (HRV) is a mechanical device designed to improve indoor air quality while conserving energy. It works by exchanging stale indoor air with fresh outdoor air, capturing heat from the outgoing air to warm the incoming air during colder months. This process helps maintain a comfortable temperature inside without wasting energy. HRVs are particularly useful in tightly sealed buildings where natural ventilation is limited. They help reduce humidity and remove pollutants, making the indoor environment healthier. By using an HRV, homeowners can enjoy fresh air while minimizing heating costs, contributing to energy efficiency and comfort.