Must existing equipment be brought up to code once a new code has been adopted?

The assertion is that existing equipment does not have to be retrofitted to meet new codes once they have been adopted. This is based on the principle that codes are typically applied to new installations and major renovations rather than retroactively enforced on existing equipment. Existing systems that were compliant with the code at the time of installation are generally allowed to remain in service without modification, even if newer standards are established.

This principle promotes fairness and practicality, considering the potential financial burden and logistical challenges that might arise from requiring all existing systems to immediately adhere to the newest regulations every time a code changes. There are specific circumstances, such as significant remodels or upgrades, where bringing existing equipment up to the current code may be mandated, but in general, simply adopting a new code does not automatically require all existing equipment to comply.