The Air-Conditioning, Heating and Refrigeration Institute warns consumers about the dangers of unauthorized and unapproved altering or any gas-fired heating appliance. Manufacturers must use specific engineering and design knowledge to develop gas-fired heating appliances that operate safely and properly under a variety of conditions.
designs are tested and certified by third-party independent testing agencies,
like CSA International, ETL/Intertek and Underwriters Laboratories, for
compliance with nationally recognized voluntary consensus safety standards. 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. Modifications should only be made
that are authorized by the original equipment manufacturer (OEM) or other
recognized authority and performed by qualified service personnel.
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. Always check with the OEM or their local
representative to ensure that a modification is authorized.
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 AdvisorFrank A.
Stanonik. “AHRI is committed to providing consumers with information
on the proper installation and safe and efficient use of gas-fired appliances,”