If that happens, forced-air comfort systems will have stiff competition. A valance convector located near the ceiling provides both heating and cooling. The casing shields the fin-tube convector from view and collects any condensation. Hydronic comfort systems offer several advantages over forced air. Circulating water requires less energy than blowing air through ducts.
Ducted systems are notoriously leaky, which reduces system efficiency and indoor air quality.
Forced air systems can harbor dust and organisms that reduce indoor air quality and might affect occupant health. Blowers, cabinets and ducts consume considerable space inside a building. Hydronic systems are quiet, easy to zone, and often allow unrestricted furniture placement. They are well suited to high-efficiency heat pumps. These advantages support the idea that thermal comfort could be provided by a hydronic system, while indoor air quality and moisture control could be provided by a much smaller fresh air ventilation system.