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. 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. High efficiency products are good for the environment, but what’s in it 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 alone transfers 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 heat your home with minimal operating sounds 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. These features 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, just have our staff at Air Engineers Service Experts Heating & Air Conditioning in Jacksonville take care of that for you. When you buy through Air Engineers Service Experts, it just makes sense to have us do your installation and any other necessary HVAC work, too. Since we’re in Jacksonville, we’ll be here when it’s time for your regular tune-up. Call 904-450-5672 or schedule a free appointment today so we can make your boiler replacement stress-free.