Ammonia is an ideal refrigerant for many applications. Worldwide, ammonia is used on a large (and increasing) scale as a refrigerant. The security risks are comparable to other accepted risks. Experience has been built up worldwide in how to handle ammonia safely. We ensure that the entire security chain remains secure. The SCM Ref standard NH3 units meet all safety regulations, are durable, energetically efficient and are suitable for use in service and care buildings.