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 prevent 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 starts the burner only when it’s needed. Additional energy savings are possible with the GWB8-E’s 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. Installion is a breeze when it’s the GWB8-E. We can easily integrate it with your radiator system and it’s available in nine sizes. That means you can install this boiler virtually anywhere you want. Don’t want your boiler to use natural gas? No problem. The GWB8-E can be fueled by LP gas instead.2 Containing three qualities we want to see in a boiler, the GWB8-E has it all: reliable parts, energy efficiency and dependability. Call your Abbey Air Service Experts Heating & Air Conditioning in at 289-813-5566 to learn more or schedule a free appointment. We’re located in Oakville, so a comfy home is closer than you might think. 1 262 and 299 models feature titanium burners. 2 Shipped as natural gas; convertible to LP.