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. But that’s not all. The GWB9-IH boiler also reached 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? For starters, you could start seeing a decrease in your utility bills. Further, you’ll experience a home that heats up quicker 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 suffer from heating and cooling inconsistencies – it’ll always be just the temperature you want. 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. It may seem like a lot, but all this doesn’t add up to a large 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, leave it up to our experts at A-PLUS Service Experts Heating & Air Conditioning in Waldorf take care of that for you. When you buy through A-PLUS Service Experts Heating & Air Conditioning, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Waldorf, we’ll be here when it’s time for a routine tune-up. Call 301-747-3140 or schedule a free appointment today so we can help with all your GWB9-IH needs.