GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re in the market 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 that’s not all. 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 suffer from heating and cooling inconsistencies – it’ll always be just the temperature you want. The GWB9-IH boiler will quietly warm your home for years 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, just have our staff at Limcan Walker/Certified Service Experts Heating & Air Conditioning in Whitby take care of that for you. When you buy through Limcan Walker/Certified Service Experts Heating & Air Conditioning, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Whitby, we’ll be here when it’s time for an annual tune-up. Call (289) 274-4367 or schedule a free appointment today so we can help with all your GWB9-IH needs.