It pays to be caring! You are going to save SO much energy and money with this easy-to-install system. But we have one additional thought, mate: As a Caring Koala, you may be interested in increasing occupant health, comfort, and wellness by instead going with an electric or hydronic advanced performance dedicated outside air system (DOAS). By using the most efficient HVAC equipment and key design principles, this system offers a thoughtful way for Caring Koalas to support occupants with better indoor comfort and cleaner and safer air.