MTSC - 1958, Volume 11-3 Air Conditioning Service

[@Mike-n7q]

These older units were overdesigned and were made for serviceability. Much of this older equipment over 70 years old is still in service today. I lost my job at chrysler because I was driving 50 year old Dodges and Desotos to work everyday. Every bit as dependable as the new ones

[@johnevans9751]

It's compact, lightweight, and whisper quiet, too.

[@dmoore7519]

Highly technical compared to today’s methods.