The Powermax 900 will operate just fine with a height control system. It is the earlier version of the newer Powermax1000. It is a great unit, and parts and service are readily available through all authorized Hypertherm distributors. There is an upgrade torch available (the T60) which makes it cut faster and with longer consumable life...it is available in both a hand and machine version. The original torch however is just fine...I used the 900 for years on a PlasmaCam machine.