GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re looking for a high-efficiency boiler, consider the Lennox® GWB9-IH boiler. This boiler has earned 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 means 90% of the fuel is 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. Further, you’ll experience a home that warms up quick thanks to the boiler’s cast-aluminum heat exchanger. Even alone, this exchanger 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 will always be the perfect temperature. The GWB9-IH boiler will provide warmth quietly year after year with its sealed combustion. It’ll stay durable for years, too, since it was made with heavy-gauge steel and has a baked-on paint finish. These features don’t add up to a large machine. In fact, the GWB9-IH is compact and easy to install in smaller spaces. Speaking of installation, leave it up to our experts at Service Experts Heating & Air Conditioning in Charlotte 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 Charlotte, we’ll be nearby when it’s time for your regular tune-up. Call 704-464-4307 or schedule a free appointment today so we can help with all your GWB9-IH needs.