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 – that’s up to 40% more efficient than traditional boilers. This unit proves that sometimes, less is more. More efficiency, more savings, more comfort for your home. Technology is the secret to the GWM-IE’s efficiency. Some of this technology is shown through a modulating burner that operates primarily on a low-flame setting and adjusts as necessary. This produces an even temperature without turning on and off, so you can have a quieter home. Additionally, 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 standard boilers. A factory-installed low water cut-off switch ensures safe operation. A CPVC flue condensate collector protects against corrosion and leaking. A wall-hung design makes it easy to mount on the wall so you can save space. We’re convinced...what about you? Check out the GWM-IE boiler product brochure to learn even more. Our Calverley Service Experts Heating and Air Conditioning team in Fort Worth 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 Calverley Service Experts to your home. Schedule an appointment with us today.