Lennox Precise Comfort Technology is an innovative way to maintain efficiency while providing greater comfort than any single stage furnace.  To demonstrate the difference, let's first take a look at a conventional single stage furnace in the winter.  With the single stage furnace you only have one speed.  So you are either at maximum heat and full air speed, or waiting for your home to cool down enough for the furnace to start up again.  But Precise Comfort Technology lets your furnace adjust its heat output to any point between 35% and 100% of its maximum capacity.  

So while a single stage furnace is constantly moving the temperature up and down, a furnace with Precise Comfort controlled by a Lennox thermostat or other compatible programmable thermostat can keep your home consistently comfortable day in and day out.