GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E provides warmth just when you need it most. This boiler includes a cast iron heat exchanger and stainless steel burners designed to avoid corrosion and oxidation1 and last for years. Effective heat year after year? It can’t get much better than that. Similar to our some of our other products, this boiler has an electronic ignition control that only turns on the burner 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. 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 a variety of sizes. That means you can install this boiler almost anywhere you want. Prefer not to use natural gas? No problem. 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 Service Experts Heating & Air Conditioning in at 239-643-3000 to find out more or schedule a free appointment. We’re located in Naples, 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.