GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re in the market for a high-efficiency boiler, look no further than the Lennox® GWB9-IH. This boiler has achieved ENERGY STAR® certification, so it’s met the highest federal guidelines for energy efficiency. But there’s more. The GWB9-IH boiler also achieved an AFUE rating of 90%, which translates to 90% of the fuel being converted to usable heat. We know energy efficiency is great for the environment, but what’s in it for you? First off, you could enjoy lower energy bills. Further, you’ll experience a home that heats up quicker thanks to the boiler’s cast-aluminum heat exchanger. This exchanger alone transfers heat three times faster than those made with cast iron. An electronic ignition control will monitor water temperature and turn the boiler on only when necessary, so your home won’t suffer from heating and cooling inconsistencies – it’ll always be just the temperature you want. The GWB9-IH boiler will quietly warm your home year after year with its sealed combustion. It’ll stay durable for years, too, because it was created with heavy-gauge steel and includes a baked-on paint finish. These features don’t add up to a bulky machine. In fact, this boiler is compact and easy to install in smaller spaces. As long as we’re on the topic of installation, just have our experts at Broad Ripple Service Experts Heating & Air Conditioning in Indianapolis take care of that for you. When you buy through Broad Ripple Service Experts, it just makes sense to have us do your installation and whatever HVAC repairs come up down the road, too. Since we’re in Indianapolis, we’ll be close when it’s time for an annual tune-up. Call 317-527-0271 or schedule a free appointment today so we can make your boiler replacement stress-free.