GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers heat 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. Effective 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 turns the burner on only 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, the GWB8-E’s efficiency ratings can add up to 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 you want. Concerned about using natural gas? That’s fine. The GWB8-E can alternatively be fueled by LP gas instead.2 Featuring most all the qualities we want to see in a boiler, the GWB8-E has it all: high-quality parts, energy efficiency and dependability. Call your Atmostemp Service Experts Heating & Air Conditioning in at 856-310-4824 to learn more or schedule a free appointment. We’re located in Voorhees, 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.