Armstrong Heating & AC, Inc. With a total of 200 years of combined service, we can better serve you. Heating & Air Conditioning Amana LASTS AND LASTS AND LASTS. Amana EnergyEfficiency Dealer Alliant Energy. 2 Full-Time Service Techs 3 Installation Techs 220 S. 14th Washington 319-653-4276 Armstrong Heating & AC, Inc. With a total of 200 years of combined service, we can better serve you. Heating & Air Conditioning Amana LASTS AND LASTS AND LASTS. Amana EnergyEfficiency Dealer Alliant Energy. 2 Full-Time Service Techs 3 Installation Techs 220 S. 14th Washington 319-653-4276