GWB9-IH Boilers: High-Efficiency with Faster Heat Transfer If you’re looking for a high-efficiency boiler, look no further than the Lennox® GWB9-IH. This boiler has earned 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 translates to 90% of the fuel being converted to usable heat. We know energy efficiency is great for the environment, but what does it really mean for you? Well, you could start seeing a decrease in your utility bills. Further, you’ll experience a home that heats up quicker 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 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 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. While we’re talking about installation, leave it up to our professionals at Service Experts Heating & Air Conditioning in Canada take care of that for you. When you buy through Service Experts, it just makes sense to have us do your installation and any necessary HVAC repairs, too. Since we’re in Canada, we’ll be here when it’s time for an annual tune-up. Call 866-397-3787 or schedule a free appointment today so we can assist with all your GWB9-IH needs.