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 created to prevent corrosion and oxidation1 and last for years. Effective 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 turns the burner on only when it’s needed. Additional energy savings are possible with the GWB8-E’s thick fiberglass insulation and vent damper, which closes by itself when the boiler turns off. In fact, its efficiency ratings can add up to nearly 84% AFUE, leading to a decrease in your utility bills. The GWB8-E makes our installation job even easier. It’s easy to integrate with your radiator system and it’s available in a variety of sizes. That means you can install this boiler nearly anywhere you want. Prefer not to use natural gas? That’s fine. 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 Neal Harris Service Experts Heating, Air Conditioning & Plumbing in at 816-787-0500 to learn more or schedule a free appointment. We’re located in Kansas City, 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.