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 achieved ENERGY STAR® certification, so it’s met the highest federal guidelines for energy efficiency. And that’s only the beginning. The GWB9-IH boiler also achieved an AFUE rating of 90%, which means 90% of the fuel is converted to usable heat. We know energy efficiency is great for the environment, but how does it actually affect you you? Well, you could start seeing a decrease in your utility bills. But, you’ll also experience a home that heats up fast 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 will always be the perfect temperature. The GWB9-IH boiler will provide warmth quietly for years 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 massive 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, leave it up to our experts at Service Experts Heating & Air Conditioning in Columbus take care of that for you. When you buy through Service Experts, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Columbus, we’ll be close when it’s time for your regular tune-up. Call 614-334-3192 or schedule a free appointment today so we can help with all your GWB9-IH needs.