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 uses 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’s just as sweet as it sounds. Similar to our GSB8-E product, this boiler has an electronic ignition control that turns the burner on only when it’s needed. Energy savings are maximized with a thick fiberglass insulation and vent damper, which closes by itself when the boiler turns off. In fact, its efficiency ratings can reach 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 multiple sizes. That means you can install this boiler almost anywhere in your home. Concerned about using natural gas? That’s fine. The GWB8-E can also 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: well-made parts, energy efficiency and dependability. Call your Service Experts Heating & Air Conditioning in at 613-817-1591 to learn more or schedule a free appointment. We’re located in Kingston, 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.