Craftsman bungalows and stucco boxes from before the war often heat from one wall unit or a floor furnace. Cooling hits harder in the Valley than on the Westside. Ductless heat pumps fit the houses that still have no ducts.
Ask for a heat pump sized to keep your home warm on the coldest usual winter day. The price uses the CA and utility programs your address qualifies for. No sales call, no information sold, no pressure.