GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E provides warmth 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. Consistent 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. 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 achieve 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. 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. Concerned about using natural gas? That’s okay. 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: well-made parts, energy efficiency and dependability. Call your Service Experts Heating & Air Conditioning in at 440-252-1375 to discover more or schedule a free appointment. We’re located in Cleveland, 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.