GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E provides warmth just when you need it most. This boiler features a cast iron heat exchanger and stainless steel burners created to resist corrosion and oxidation1 and last for years. Consistent heat year after year? It can’t get much better than that. Similar to our GSB8-E product, this boiler has an electronic ignition control that only turns on the burner 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, its efficiency ratings can add up to nearly 84% AFUE, leading to more dollars subtracted from your monthly utility bills. We’re already experts at boiler installations, but the GWB8-E makes our job more simple. It’s simple to connect with your radiator system and it’s available in nine sizes. That means you can install this boiler virtually anywhere you want. Concerned about using natural gas? That’s fine. The GWB8-E can also 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 Service Experts Heating & Air Conditioning in at 289-273-2229 to learn more or schedule a free appointment. We’re located in Niagara Falls, 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.