GWB8-E: A Gas-Fire Water Boiler You Can Depend On The Lennox® GWB8-E offers warmth just when you need it most. This boiler features a cast iron heat exchanger and stainless steel burners created to avoid corrosion and oxidation1 and last for years. Consistent heat year after year? It can’t get much better than that. Similar to our other boilers, this boiler has an electronic ignition control that starts the burner 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, this boiler’s efficiency ratings can reach nearly 84% AFUE, leading to more dollars subtracted from your monthly utility bills. Installion is a breeze when it’s the GWB8-E. We can easily integrate it with your radiator system and it’s available in nine sizes. That means you can install this boiler nearly anywhere in your home. 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: well-made parts, energy efficiency and dependability. Call your Comfortech Service Experts Heating & Air Conditioning in at 601-852-3105 to learn more or schedule a free appointment. We’re located in Jackson, 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.