GWM-IE Boilers Offer the Highest Efficiency that will Keep You Warm For the best in boilers, select the Lennox® GWM-IE high-efficiency, gas-modulating condensing water boiler. This product achieved ENERGY STAR® certification and a 95% AFUE efficiency rating, which is up to 40% more efficient than regular systems. This unit proves that sometimes, less is more. More energy efficient, more savings, more comfort for your family. Technology is a key component of the GWM-IE’s efficiency. It includes a modulating burner that operates primarily on a low-flame setting and changes settings as necessary. This produces an even temperature without turning on and off, resulting in a quieter home. Further, the condensing water feature we mentioned earlier helps keep in the heat that would otherwise be wasted, thanks to specially designed tubes in the vertical stainless steel heat exchanger. Now that we’ve got you hooked, let’s switch gears. The GWM-IE boiler is safer and more convenient than standard boilers. A factory-installed low water cut-off switch guarantees safe operation. A CPVC flue condensate collector protects against corrosion and leaking. A wall-hung design makes it possible to save more space. We’re convinced...what about you? Check out the GWM-IE boiler product brochure to learn even more. Our Knochelmann Service Experts Heating & Air Conditioning team in Sharonville will help you with all the details to purchase and install a new GWM-IE boiler. Add the most energy efficient and reliable boiler offered by Knochelmann Service Experts to your home. Schedule an appointment with one of our professionals today.