Trane Heat Pump – Quality of product and cost to repair is terrible

I have created this petition. Please support it by adding your signature.

I think it's just that they've been cealld that for such a long time that that's what they're cealld.On some old 707s, the complete air conditioning pack could be removed as a unit. The 707 was available with either a standard air cycle machine system, or with a conventional freon system. The freon system came out of the airplane as a complete unit; all components were mounted to a frame, which bolted up to the airplane. This modular system could very well have been cealld a pack', and if so, the name stuck.(The reason for two systems was that the early air cycle systems didn't work very well on the ground; they needed a lot of airflow through their heat exchangers in order to effectively cool a lot of air. The conventional freon systems didn't have that problem. If I remember correctly, most (if not all) TWA 707s had freon packs, and I think at least some of the later Pan Am ones did as well.)I've never seen an air cycle system on an airliner that could be removed as a unit, however. All the components are attached to the airplane structure separately, though they are all located together in the same part of the airplane (in the belly underneath the wings on Boeings, in the nose on the DC-8, and in the tail on the DC-9/MD-80/MD-90 series).As far as it originating with an abbreviation of PACS, well, that's entirely possible. I've never seen that abbreviation used in reference to an airliner, but maybe it was a military term (after all, the military just loves abbreviations). However it originated, that's what everyone calls them.

CyD1PI xyiqbsbpjnpb

rcJUQm szedqmfffptn