[Mark McLeod]

For small systems it might not be a problem, but with extensive use compressor temperature might need to be taken into consideration also.

Temp and in particular the long-term damage and increased failure rate due to running either of the compressors outside it's spec. might also be an issue with repeated usage. For instance, pre-charging a large system, 5 min brief rest, 2:15 match use, 45 minute rest, repeat.

As I recall the second run of the VIAir after a 45 minutes rest, took it's case temperature to the mid-90's, mostly because of the longer run time required. The Thomas 2nd run was mainly lower because it finishes sooner.