Which of the following is not true about the ammonia refrigerant?

Ammonia refrigerant is widely recognized for several characteristics that contribute to its application and regulatory considerations. It is indeed commonly used in commercial refrigeration, especially in large industrial systems due to its efficiency and effectiveness at heat transfer. Additionally, ammonia has a low global warming potential, making it a more environmentally friendly option compared to synthetic refrigerants. It is also classified as a natural refrigerant, derived from natural sources, which is beneficial for sustainability initiatives in refrigeration systems.

The assertion regarding its legal status in New Jersey is not true; ammonia is still utilized as a refrigerant in various applications, subject to specific safety and environmental regulations. This means that the claim that it is no longer legal to use ammonia in New Jersey is misleading. Therefore, the correct answer identifies the inaccurate statement about ammonia refrigerant's legal status, while the other statements accurately reflect its properties and uses.