GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re searching for a high-efficiency boiler, consider the Lennox® GWB9-IH boiler. This boiler has earned ENERGY STAR® certification, meaning 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 means 90% of the fuel is converted to usable heat. Yes, being energy efficient helps the environment, but what’s in it for you? For starters, you could enjoy lower energy bills. Another nice benefit is that you may 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 heat your home with minimal operating sounds 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. It may seem like a lot, but all this doesn’t add up to a massive machine. In fact, the GWB9-IH boiler is compact and easy to install in smaller spaces. While we’re talking about installation, just have our experts at Service Experts Heating & Air Conditioning in Dallas take care of that for you. When you buy through Service Experts, it just makes sense to have us do your installation and any other necessary HVAC work, too. Since we’re in Dallas, we’ll be close when it’s time for an annual tune-up. Call 469-249-1971 or schedule a free appointment today so we can assist with all your GWB9-IH needs.