ran into a American standard heat pump today w a 470(410a) head and 150 suction. put into cooling and everything was great.13 subcool. ambient was 65. As I am a newbie to the heating side, how different will my pressures be as opposed to cooling mode, and do you take sh and sc readings in the heating mode. Also, does variable speed blower increase speed when heat pump runs with electric heat? Thanks for any advice