The portable, lightweight, V.A.C. Freedom Therapy Unit for advanced wound healing aids patients to return to their daily activities. It has the potential to decrease the number of nurse visits and dressing changes compared to traditional wound care. It comes with a 300 ml easy to remove and replace canister. The filtration reduces wound odor, extended battery life allows for day-long mobility, and dressing changes are simplified with T.R.A.C. Pad™. Improved comfort for patients with adjustable dressing draw down rates and the carrying case design provides for discreet on the go delivery of therapy. T.R.A.C. allows for the use of Smart Alarms™ that ensure patient safety and T.R.A.C. Technology watches and sustains the target pressure.