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Is it Really Worth Using PVC?

Boiler and hot water heater manufacturers frequently recommend using PVC pipe for combustion gas venting. But are you aware of the safety risks and potential liability associated with PVC?

PVC is a thermoplastic which degrades when when it's heated; in fact the maximum operating temperature for PVC is only 140°F. The temperature of the flue gasses from a furnace or boiler can easily exceed that threshold, especially when operating conditions are abnormal, or proper maintenance hasn't been performed. Degraded PVC pipe can sag and leak, allowing acidic liquid condensate and poisonous carbon monoxide gas to escape. In addition to the potential for liquid leaks to cause mold formation or damage to the building structure, carbon monoxide leakage is a serious health concern that can injure or even kill building occupants.

Learn more about the risks of using PVC piping for your furnace or water heater

Selkirk has been manufacturing chimney and venting systems for over 80 years, making them one of the most well-known leaders in the industry. Selkirk makes products for use in Category II to IV venting systems, in materials including 304 and 316 stainless steels, as well as AL29-4C. Selkirk chimney and venting systems are built to last and easy to install, and they are far superior to PVC. Don't worry about what might go wrong with a PVC venting system - choose Selkirk for safety, longevity and peace of mind!

Interested in Learning More About Selkirk?


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