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 created to resist corrosion and oxidation1 and last for years. Effective heat year after year? It really is that good. 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. It further maximizes energy savings with a thick fiberglass insulation and vent damper, which closes on its own when the boiler turns off. In fact, the GWB8-E’s efficiency ratings can achieve 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. It’s easy to integrate 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? 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: well-made parts, energy efficiency and dependability. Call your BW/Cook Service Experts Heating & Air Conditioning in at 574-218-6404 to learn more or schedule a free appointment. We’re located in Elkhart, 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.