Since 1975, A-1 United Heating & Air has been serving the needs of people throughout Omaha. When you need a comfortable home, turn to us. We provide sales, service and maintenance for Lennox products. We also have a sheet metal shop for fabrication work. Our great services include Commercial cooling and heating, Residential new construction and Residential replacement find out how we can get you rebates and tax credits on your purchase with us. Also, check our web site for a current promotion. Call today, and live comfortably indoors.