GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re looking for a high-efficiency boiler, look no further than the Lennox® GWB9-IH. This boiler has earned ENERGY STAR® certification, which means it meets or exceeds 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. High efficiency products are good for the environment, but what’s in it for you? Well, you could start seeing a decrease in your utility bills. But, you’ll also experience a home that heats up quicker thanks to the boiler’s cast-aluminum heat exchanger. This exchanger is stunning – it alone can transfer 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 heat your home with minimal operating sounds for years to come 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. It may seem like a lot, but all this doesn’t add up to a large machine. In fact, the GWB9-IH boiler is compact and easy to install in smaller spaces. As long as we’re on the topic of installation, let our staff at Rolf Griffin Service Experts Heating & Air Conditioning in Fort Wayne take care of that for you. When you buy through Rolf Griffin Service Experts, it just makes sense to have us do your installation and any other necessary HVAC work, too. Since we’re in Fort Wayne, we’ll be nearby when it’s time for your regular tune-up. Call 260-557-1275 or schedule a free appointment today so we can assist with all your GWB9-IH needs.