GWM-IE Boilers Offer the Highest Efficiency that will Keep You Warm For the most efficiency in boilers, select the Lennox® GWM-IE high-efficiency, gas-modulating condensing water boiler. This product earned 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 efficient, more savings, more comfort for you. Technology is key to the GWM-IE’s efficiency. It includes a modulating burner that operates primarily on a low-flame setting and makes adjustments as necessary. This produces an even temperature without turning on and off, so you can have a quieter home. Further, the condensing water feature we mentioned earlier helps retain heat that would otherwise be wasted, thanks to specially designed tubes in the vertical stainless steel heat exchanger. Since we have your attention, we’re now going to switch gears. The GWM-IE boiler is safer and more convenient than traditional boilers. A factory-installed low water cut-off switch allows for safe operation. A CPVC flue condensate collector safeguards against corrosion and leaking. A wall-hung design makes it easy for you to save space with its wall mounting ability. We’re convinced...how about you? Browse through the GWM-IE boiler product brochure to learn even more. Our Atmostemp Service Experts Heating & Air Conditioning team in Voorhees will help you with whatever you need to purchase and install a new GWM-IE boiler. Add the most energy efficient and reliable boiler offered by Atmostemp Service Experts to your home. Schedule an appointment with us today.