Cooling down without Air Conditioners

[Guest]

Yes its an irritant and hazerous in large quanities. but in roof top units like most buildings use it is not hazerdous. They only people who it can bother in such a case is repair men, but there are safety measure which negate this issue easly for professional hvac service.

And ammonia is not less effiecent than freon.

It is still used in the largest capacity freezers such as icecream warehouses.