GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E provides warmth effectively when you need it most. This boiler features a cast iron heat exchanger and stainless steel burners built to resist corrosion and oxidation1 and last for years. Consistent heat year after year? It’s just as sweet as it sounds. Similar to our some of our other products, this boiler has an electronic ignition control that only turns on the burner when it’s needed. Energy savings are maximized with a thick fiberglass insulation and vent damper, which closes on its own when the boiler turns off. In fact, the GWB8-E’s efficiency ratings can add up to nearly 84% AFUE, leading to a decrease in your utility bills. We’re already experts at boiler installations, but the GWB8-E makes our job more simple. We can easily integrate it with your radiator system and it’s available in a variety of sizes. That means you can install this boiler nearly anywhere in your home. Don’t want your boiler to use natural gas? That’s okay. The GWB8-E can alternatively be fueled by LP gas instead.2 Having many of the qualities we want to see in a boiler, the GWB8-E has it all: well-made parts, energy efficiency and dependability. Call your Service Experts Heating & Air Conditioning in at 919-578-4329 to learn more or schedule a free appointment. We’re located in Raleigh, so a relaxing home is closer than you might think. 1 262 and 299 models feature titanium burners. 2 Shipped as natural gas; convertible to LP.