Groundbreaking Technology and Efficiency Defines The Lennox® Comfort System O'Brien Heating & Air Conditioning in the Main Line delivers the most progressive heating and cooling products and features around, all bundled into one system. The Ultimate Comfort SystemTM from Lennox® brings you pioneering HVAC technology that delivers exceptional energy efficiency. The Ultimate Comfort System is a collection of highly innovative pieces of technology that all work as a team to take your comfort to an amazing new level, with excellent efficiency. Read more below. Precise Comfort® technology includes variable capacity and a variable speed motor, which operate like your car’s cruise control to make sure the system maintains consistent temperatures without temperature cycling. This keeps your home at your preferred temperature and level of comfort all day, while enhancing overall efficiency. iHarmony Zoning® takes your comfort and energy savings to the next level. It permits the Ultimate Comfort System to direct air to specific rooms of your home while cutting back airflow to other areas. This adjusts your comfort by room and floor. The iComfort Wi-Fi® touchscreen thermostat makes iHarmony Zoning easy to use. The most evolved thermostat Lennox has ever made, the iComfort Wi-Fi thermostat permits you to watch and adjust your temperature—and save energy—from anywhere in the world, using your smartphone, tablet or laptop. Climate IQ® technology allows the Ultimate Comfort System to accommodate your needs and your climate. In warmer areas, it fine tunes airspeed to provide greater 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 route any surplus energy it generates into your home to run small appliances and electronics. This can greatly reduce 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 conventional cooling systems, it may save you hundreds of dollars each year. Advanced variable-capacity technology makes the SLP98V one of the most efficient heating systems you can have. Like the XC25, this furnace may markedly 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.