Why are ammonia systems seldom used for air conditioning in large buildings?

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Ammonia systems are seldom used for air conditioning in large buildings primarily due to their toxicity. Ammonia is a hazardous substance that can pose serious health risks if there is a leak or exposure. In applications where a large number of occupants are potentially present, such as in large commercial or residential buildings, the safety risks associated with ammonia usage become significant. This concern over exposure and the potential for serious harm makes building owners and operators wary of using ammonia-based systems for air conditioning.

Additionally, while ammonia systems can be efficient in certain industrial applications, the risks related to their use in populated areas lead to stringent regulations and safety requirements that complicate installation and operation. Thus, the primary reason for their limited use is the toxicity of ammonia, which necessitates stringent safety measures.

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