GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers heat at the times you need it most. This boiler uses a cast iron heat exchanger and stainless steel burners created 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 other boilers, this boiler has an electronic ignition control that starts the burner only when it’s needed. Additional energy savings are possible with the GWB8-E’s thick fiberglass insulation and vent damper, which closes on its own when the boiler turns off. In fact, its efficiency ratings can achieve nearly 84% AFUE, leading to a decrease in your utility bills. The GWB8-E makes our installation job even easier. It’s easy to integrate with your radiator system and it’s available in a variety of sizes. That means you can install this boiler nearly anywhere you want. Don’t want your boiler to use natural gas? That’s fine. The GWB8-E can also 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: high-quality parts, energy efficiency and dependability. Call your Levy & Son in at 469-250-0932 to find out more or schedule a free appointment. We’re located in Dallas, so a cozy home is closer than you might think. 1 262 and 299 models feature titanium burners. 2 Shipped as natural gas; convertible to LP.