Introducing the Secret Perks and Uses of Heat Recovery Ventilation in Sustainable Design Heat Recovery Ventilation (HRV) systems play an important role in sustainable design. They promote a continual exchange of stale indoor air with fresh outdoor air, considerably improving interior air high quality. Additionally, HRVs add to energy performance https://ductwork19628.nico-wiki.com/1711907/frequently_asked_questions_about_hrv_answered