The cooling system is a Mitsubishi Citi-multi zoned system, providing A/C on four floors. It is a ducted system ( air supply slots in photo above) It also can supply back up heat on very cold days. Condensers are on the roof, and air handlers are concealed in closets and above ceilings with access panels for service. The main heating system is provided by radiators
( a water based system ) with a gas boiler in the cellar for all 4 floors, most of the radiators are concealed behind custom wood cabinets below the windows, There is supplemental heat
in the bathrooms, radiant electric mats in the floor. All of the heating and cooling sytems are on zoned thermostats throughout the house.