GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re in the market for a high-efficiency boiler, consider the Lennox® GWB9-IH boiler. This boiler has received 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 means 90% of the fuel is converted to usable heat. High efficiency products are good for the environment, but what does it really mean for you? Well, you could see lower utility bills. But, you’ll also 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 quietly warm your home 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. The benefits are plentiful, but they don’t add up to a bulky machine. In fact, the GWB9-IH boiler is compact and easy to install in smaller spaces. While we’re talking about installation, let our experts at Service Experts Heating & Air Conditioning in Fort Myers 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 Fort Myers, we’ll be here when it’s time for an annual tune-up. Call 239-908-6991 or schedule a free appointment today so we can assist with all your GWB9-IH needs.