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 uses a cast iron heat exchanger and stainless steel burners built to avoid 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 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 on its own when the boiler turns off. In fact, the GWB8-E’s efficiency ratings can add up to nearly 84% AFUE, leading to reduced energy 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 multiple sizes. That means you can install this boiler nearly anywhere in your home. 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: well-made parts, energy efficiency and dependability. Call your Rob's Albertan Service Experts Heating & Air Conditioning in at 780-800-9047 to find out more or schedule a free appointment. We’re located in Edmonton, 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.