Do Gas Boilers Condense? Condensing Boiler | How Much Condensate | Plumber

If you've ever heard the term condensing boiler and wondered what it really means, you’re not alone. As a plumber, I get questions all the time about whether gas boilers condense and how that affects their efficiency. So let's break it down. First off, yes, gas boilers can condense. In fact, that’s the whole idea behind condensing boilers. These systems are designed to extract as much heat from the gas they burn as possible. When you burn gas, it creates both heat and water vapor. Traditional boilers let a lot of that heat escape, but condensing boilers capture and use this heat by cooling the exhaust gases. This causes condensation and results in additional heat that can be used to warm your home. Now you might be wondering, how much condensate can you expect? Typically, a condensing boiler can produce quite a bit of water, especially in cold weather when they are working hard to keep up with demand. It’s important to make sure that you have a proper drainage system in place since this condensate can be acidic and needs to be drained correctly to avoid any damage. For DIYers and homeowners considering a switch to a condensing boiler, it’s a solid investment in your heating system. Not only do they save on energy bills, but they are also better for the environment due to their increased efficiency. So next time someone asks you if gas boilers condense, you can confidently say yes and explain how they work wonders in efficiency. Interested in learning more? Check out the video above for a deeper dive into condensing boilers and the science behind them. Happy plumbing!