The Air-Conditioning, Heating, and Refrigeration Institute (AHRI), warns consumers about the dangers of unauthorized and unapproved altering or any gas-fired heating appliance.  Thus, manufacturers must use specific engineering and design knowledge to develop gas-fired heating appliances that operate safely and properly under a variety of conditions.

According to the Institute, any unauthorized modification to a gas-fired appliance, no matter how minor, can alter the design and compromise the safety of that unit.  For example, an alteration that changes the combustion process may cause carbon monoxide (CO) emissions that exceed the limits specified in the safety standards. In addition, consumers should also beware of companies that offer to make, or instruct consumers about how to make, modifications to various appliances without expressed, written authorization of the OEM.

"Any unauthorized modification to a gas burning appliance voids its safety certification and may expose consumers to a risk of property damage, personal injury, or even death," said AHRI Chief Technical Advisor Frank A. Stanonik. "AHRI is committed to providing consumers with information on the proper installation and safe and efficient use of gas-fired appliances," Stanonik said.

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