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electric AC Compressor

T

toddwallace

Member
has anyone tried or have any thoughts on an electric compressor with my classic auto air AC in my 1966? My paxton supercharger is on the driver side and struggling to find a passenger side alternator bracket. Other than upgrading the alternator, seems pretty straight forward as I am not dealing with a belt anymore.


Here is what I was looking at:
generic electric AC compressor
 

In the videos above he used a 12,000 BTU compressor which needs a 100A fuse. He GUESSES it runs at about 60A at 12v. He has no way to measure the actual power requirements. He already has a very large 150A alternator. For reference the 1G alternator that came in my 69 Mach is 55A.
The blower at the evaporator (in the cabin) was only 300cfm and was not adequate. He ran it for one hour with the engine off, and the voltage dropped to 11.4v and it shut itself off. That was below the threshold for his engine electronics (Holley EFI?).
It needed a bigger blower to circulate more cfm in the cabin, so he changed this to 600cfm (which sucks even more power). He also changed the fan for the condenser from 233 cfm to 1400 cfm (requires even more power). He kept stressing that the power requirements are intense and it needs a BIG (dare I say huge) charging system. He added a second battery in the trunk just to run the AC and used some impressive cables.
All of this was by the seat of his pants. He didn't know how much power it used to start with, or how much more he added.
 
Like said : these ac systems draws alot of power. Your charging system is the first thing to upgrade before adding an electronic ac system.
Read: big alternator, much thicker wires and big battery.
 
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