GWM-IE Boilers Offer the Highest Efficiency that will Keep You Warm For the finest option available in boilers, go with the Lennox® GWM-IE high-efficiency, gas-modulating condensing water boiler. This product earned ENERGY STAR® certification and a 95% AFUE efficiency rating. That’s an efficiency rating 40% higher than standard boilers! This boiler proves that sometimes, less is more. More energy efficient, more savings, more comfort for your family. Technology is the secret to the GWM-IE’s efficiency. For example, these boilers include a modulating burner that operates primarily on a low-flame setting and adjusts as necessary. This helps produce 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. Have we captured your attention? Let’s switch gears. The GWM-IE boiler is safer and more convenient than standard 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 to mount on the wall so you can save space. We’re convinced...how about you? Browse through the GWM-IE boiler product brochure to learn even more. Our San Antonio Air Service Experts Heating & Air Conditioning team in San Antonio will help you with everything you need to purchase and install a new GWM-IE boiler. Add the most energy efficient and reliable boiler offered by San Antonio Air Service Experts to your home. Schedule an appointment with us today.