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 prevent corrosion and oxidation1 and last for years. Reliable heat year after year? It can’t get much better than that. 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 closes on its own when the boiler turns off. In fact, its efficiency ratings can achieve nearly 84% AFUE, leading to more dollars subtracted from your monthly utility bills. Installion is a breeze when it’s the GWB8-E. 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 house. Concerned about using natural gas? That’s fine. 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: well-made parts, energy efficiency and dependability. Call your Roland J. Down Service Experts Heating & Air Conditioning in at 518-417-2938 to learn more or schedule a free appointment. We’re located in Albany, 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.