Do you need air conditioner repair or repairs on your baseboard heater for the winter? If so, you need a Santa Rosa hvac contractor for all your heating and air conditioning needs. Hanson Heating & Air is here to help. Locally owned and operated, Hanson Heating & Air has been serving the North Bay and San Francisco area for years and wants to serve you. We specialize in residential and commercial furnace repair, air conditioner repair, installing radiant heat systems, servicing your boiler, and we even install warm floor systems too. We offer many services, including high-efficiency green systems and state-of-the-art solar products. Additional Resources.