Jett's Heating & Air Inc. has the Packaged Unit You Need for Year-Round Comfort Ask anyone and they’ll agree that they could use more space in their homes. Jett's Heating & Air Inc. in Crystal Lake has a streamlined solution for you: a packaged HVAC system. Providing comfortable indoor air month after month, a packaged system is designed to house the makings of a common split system into one sleek cabinet. Plus, it’s easy to install in almost any residence, positioned outside your home or fitted to your roof. That frees more of your indoor space for hard-to-come-by storage! When shopping for any kind of HVAC system, people rank energy efficiency at the top of their must-have benefits list. With energy ratings as high as 15.00 SEER* and 8.00 HSPF,** our packaged units have what people want. In fact, our Dave Lennox Signature® Collection units are all ENERGY STAR® qualified. Jett's Heating & Air Inc. has the perfect packaged system for your wish list and your budget. Explore our options. Dave Lennox Signature® Collection ELITE® Series MERIT® Series Jett's Heating & Air Inc. in Crystal Lake is ready to help, whether you’re shopping for a new packaged unit or require an expert to service your existing system. Set up your appointment online today or call us at 815-459-4700 to see how we can serve you. *SEER, or Seasonal Energy Efficiency Ratio, measures the cooling efficiency of your air conditioner or heat pump. A higher SEER rating means greater energy efficiency and more savings for you and the environment. **HSPF, or Heating Seasonal Performance Factor, measures the heating efficiency of your heat pump. A higher HSPF rating means greater energy efficiency, more savings and is better for the environment.