GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers warmth effectively when you need it most. This boiler includes 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’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 on its own when the boiler turns off. In fact, this boiler’s efficiency ratings can add up to nearly 84% AFUE, leading to reduced energy 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 multiple sizes. That means you can install this boiler virtually anywhere in your house. Prefer not to use natural gas? No problem. The GWB8-E can 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: high-quality parts, energy efficiency and dependability. Call your Knochelmann Service Experts Heating & Air Conditioning in at 859-905-0834 to learn more or schedule a free appointment. We’re located in Sharonville, 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.