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, meaning it meets or exceeds federal guidelines for energy efficiency. And that’s only the beginning. The GWB9-IH boiler also reached an AFUE rating of 90%, which translates to 90% of the fuel being converted to usable heat. Yes, being energy efficient helps the environment, but how does it actually affect you you? First off, you could see lower utility bills. Another nice benefit is that you may experience a home that warms up quick 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 will always be the perfect temperature. The GWB9-IH boiler will provide warmth quietly 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. These features don’t add up to a bulky machine. In fact, the GWB9-IH is compact and easy to install in smaller spaces. As long as we’re on the topic of installation, just have our professionals at Strand Brothers Service Experts Heating & Air Conditioning in Austin take care of that for you. When you buy through Strand Brothers Service Experts, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Austin, we’ll be here when it’s time for your regular tune-up. Call 512-592-3072 or schedule a free appointment today so we can assist with all your GWB9-IH needs.