GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re searching for a high-efficiency boiler, the Lennox® GWB9-IH is the model for you. This boiler has achieved ENERGY STAR® certification, so it’s met the highest federal guidelines for energy efficiency. But that’s not all. The GWB9-IH boiler also achieved an AFUE rating of 90%, which leads to 90% of the fuel used is converted to heat. Yes, being energy efficient helps the environment, but what’s in it for you? Well, you could enjoy lower energy bills. Further, you’ll experience a home that heats up fast 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 be too hot or too cold. It’ll be just right. The GWB9-IH boiler will provide warmth quietly year after year with its sealed combustion. It’ll stay durable for years, too, having been created with heavy-gauge steel and receiving a baked-on paint finish. The benefits are plentiful, but they don’t add up to a massive machine. In fact, the GWB9-IH is compact and easy to install in smaller spaces. While we’re talking about installation, let our experts at Climate Control Service Experts Heating & Air Conditioning in Mobile take care of that for you. When you buy through Climate Control Service Experts, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Mobile, we’ll be nearby when it’s time for your regular tune-up. Call 251-202-7503 or schedule a free appointment today so we can assist with all your GWB9-IH needs.