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 received ENERGY STAR® certification, which means 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 leads to 90% of the fuel used is converted to 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 fast thanks to the boiler’s cast-aluminum heat exchanger. Even alone, this exchanger 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 heat your home with minimal operating sounds 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. It may seem like a lot, but all this doesn’t add up to a massive machine. In fact, the GWB9-IH is compact and easy to install in smaller spaces. Speaking of installation, leave it up to our experts at Service Experts Heating & Air Conditioning in Miami take care of that for you. When you buy through Service Experts Heating & Air Conditioning, it just makes sense to have us do your installation and any other necessary HVAC work, too. Since we’re in Miami, we’ll be nearby when it’s time for an annual tune-up. Call 305-440-1505 or schedule a free appointment today so we can help with all your GWB9-IH needs.