GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers warmth just when you need it most. This boiler uses a cast iron heat exchanger and stainless steel burners created to avoid 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. It further maximizes energy savings with a thick fiberglass insulation and vent damper, which closes on its own when the boiler turns off. In fact, this boiler’s efficiency ratings can reach nearly 84% AFUE, leading to reduced energy bills. The GWB8-E makes our installation job even easier. It’s simple to connect with your radiator system and it’s available in a variety of sizes. That means you can install this boiler virtually anywhere you want. Concerned about using natural gas? That’s fine. 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: high-quality parts, energy efficiency and dependability. Call your Chief / Bauer Service Experts Heating & Air Conditioning in at 217-689-2469 to find out more or schedule a free appointment. We’re located in Champaign, 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.