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 earned ENERGY STAR® certification, so it’s met the highest federal guidelines for energy efficiency. But there’s more. The GWB9-IH boiler also produces 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 enjoy lower energy bills. But, you’ll also 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 be too hot or too cold. It’ll be just right. The GWB9-IH boiler will provide warmth quietly for years to come 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. 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. Speaking of installation, let our experts at Neal Harris Service Experts Heating, Air Conditioning & Plumbing in Kansas City take care of that for you. When you buy through Neal Harris Service Experts, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Kansas City, we’ll be close when it’s time for an annual tune-up. Call 816-787-0500 or schedule a free appointment today so we can make your boiler replacement stress-free.