An apparatus for deterring theft of an outdoor-type HVAC condenser unit that includes a first cut-resistant, elongate restraint for being extended across a top and down opposing sides of the unit, and includes on opposite ends thereof a respective anchor for being secured in a supporting structure on which the unit is positioned. A second cut-resistant, elongate restraint is provided for being extended across the top and down opposing sides of the unit in spaced-apart relation to and intersecting the first restraint, and includes on opposite ends thereof a respective anchor for being secured in the supporting structure on which the unit is positioned. At least one lock is provided for connecting together the first restraint and the second restraint at a point of intersecting the first restraint and the second restraint.