Originally Posted by Darral T.
chose to use a 15A breaker on my A/C unit WITH Heat Strip! ....
Well thats not good to hear. Even my cheap pop-up had a 20 amp circuit dedicated to the AC only. My biggest concern is the warrantee on the AC unit. If the install is not according to the manufacture's instructions then that could be a problem. The manual that I found, that seems to be for the units that Scamp installs, does specify a 20 amp circuit and breaker, as you stated.
I have a 20 amp outlet in my garage (need to get a 20 amp cord straight to the AC however). I would think as long as the 15 amp breaker does not trip it will be OK. The "locked" or inrush spike in current draw when the compressor comes on is actually like 70 amps, but it for such a short period of time that the 20 amp breaker is good, and hopefully the 15 too.
BTW, if you are using the heat strip then the compressor is not in use so if the breaker trips or the current is insufficient the only concern would be the low power to the fan (assuming otherwise adequate wiring).