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 features a cast iron heat exchanger and stainless steel burners designed to avoid corrosion and oxidation1 and last for years. Consistent 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 automatically closes when the boiler turns off. In fact, its efficiency ratings can reach nearly 84% AFUE, leading to a decrease in your 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 nearly anywhere in your house. Don’t want your boiler to use natural gas? That’s fine. The GWB8-E can also 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 Service Experts Heating & Air Conditioning in at 239-908-6991 to discover more or schedule a free appointment. We’re located in Fort Myers, so a cozy home is closer than you might think. 1 262 and 299 models feature titanium burners. 2 Shipped as natural gas; convertible to LP.