American Standard Heating & Air Conditioning's easy-to-read, easy-to-program thermostats give you precise control over your home's temperature. Take control of comfort and costs at the same time. Keep cool and comfortable when it heats up outside and when you open your cooling bill. Our air conditioners cool the hottest days with reliability and efficiency you can count on year after year. American Standard ZM Air Conditioner: This top of the line air conditioner features two-stage cooling and helps you save up to 60 percent on your cooling energy usage.