Wantz was recalled from Triple-A Salt Lake on Friday, J.P. Hoornstra of the Los Angeles Daily News reports.
The right-hander will provide an extra arm in the Angels' bullpen after Steve Cishek was placed on the bereavement list Friday. Wantz has allowed three runs on four hits and three walks while striking out nine in 5.1 innings across four relief appearances in the majors this year.