GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers heat just when you need it most. This boiler includes a cast iron heat exchanger and stainless steel burners created to avoid corrosion and oxidation1 and last for years. Effective heat year after year? It really is that good. 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, the GWB8-E’s efficiency ratings can reach nearly 84% AFUE, leading to a decrease in your utility bills. Installion is a breeze when it’s the GWB8-E. 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 almost anywhere in your home. Don’t want your boiler to use natural gas? No problem. 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: reliable parts, energy efficiency and dependability. Call your Peel Heating Service Experts Heating & Air Conditioning in at 289-201-2226 to discover more or schedule a free appointment. We’re located in Brampton, 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.