You have central heat/air.  Be sure the thermostat is set correctly and the unit has a clean filter.  Free filters can be obtained at the JSM office. Please check your filter regularly to ensure maximum efficiency.  Set thermostat on HEAT and fan on AUTO.  Do not place items in the furnace closet as this could cause a fire.  There is a power switch for the heat.  It looks like a standard light switch and is located in the utility closet.  If your heat will not turn on, be sure this switch is on before contacting maintenance.