Groundbreaking Technology and Efficiency Defines The Lennox® Comfort System 1st Choice Heating & Air Conditioning, Inc. in Lake Forest offers the most state-of-the-art heating and cooling products and features you can find, all together in one system. The Ultimate Comfort SystemTM from Lennox® brings you pioneering HVAC technology that delivers extraordinary energy efficiency. The Ultimate Comfort System includes advanced pieces of technology that all work together to take your comfort to an incredible new level, with extraordinary efficiency. Read more below. Precise Comfort® technology has variable capacity and a variable speed motor, which work like your car’s cruise control to make sure the system maintains consistent temperatures without temperature cycling. This keeps your home at your ideal temperature and level of comfort all day, while enhancing overall efficiency. iHarmony Zoning® takes your comfort and energy savings to a new level. It permits the Ultimate Comfort System to direct air to specific rooms of your home while reducing airflow to other areas. This customizes your comfort by room and floor. The iComfort Wi-Fi® touchscreen thermostat makes iHarmony Zoning simple to use. The most evolved thermostat Lennox has ever created, the iComfort Wi-Fi thermostat permits you to monitor and adjust your temperature—and save energy—from anywhere you are, using your smartphone, tablet or laptop. Climate IQ® technology allows the Ultimate Comfort System to adapt to your needs and your climate. In warmer areas, it fine tunes airspeed to allow better humidity control. In cooler climates, the system starts up more slowly to allow the air to absorb more heat before circulation. SunSource® solar modules can power your heating and cooling AND move any surplus energy it generates into your home to run small appliances and electronics. This can greatly lessen your energy cost—potentially reducing bills by up to half. The XC25 is the world's first residential air conditioner rated at 26.00 SEER.* Compared to common cooling systems, it could save you hundreds of dollars each year. Advanced variable-capacity technology makes the SLP98V one of the most efficient heating systems you can find. Like the XC25, this furnace may greatly reduce utility bills. *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.