GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re searching for a high-efficiency boiler, look no further than the Lennox® GWB9-IH. This boiler has achieved 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. 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 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. Speaking of installation, let our staff at Service Experts Heating & Air Conditioning in Dublin 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 Dublin, we’ll be here when it’s time for your regular tune-up. Call 925-364-5427 or schedule a free appointment today so we can help with all your GWB9-IH needs.