GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E provides warmth at the times you need it most. This boiler uses a cast iron heat exchanger and stainless steel burners designed 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. Energy savings are maximized with a thick fiberglass insulation and vent damper, which automatically closes when the boiler turns off. In fact, the GWB8-E’s efficiency ratings can reach nearly 84% AFUE, leading to reduced energy bills. We’re already experts at boiler installations, but the GWB8-E makes our job more simple. 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 virtually anywhere in your house. Concerned about using natural gas? No problem. The GWB8-E can also be fueled by LP gas instead.2 Containing three qualities we want to see in a boiler, the GWB8-E has it all: high-quality parts, energy efficiency and dependability. Call your Wesley Wood Service Experts Heating & Air Conditioning in at 484-401-7577 to learn more or schedule a free appointment. We’re located in West Chester, 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.