DeVos was admitted to Butterworth Hospital in Grand Rapids, Mich., on Aug. 19, Amway officials said in a statement. He underwent tests and was released from the hospital on Aug. 21.
One of DeVos' sons, Magic chairman Dan DeVos, said his father is recovering at home in Michigan and is "doing well."
"He hasn't lost his sense of humor and continues to improve," Dan DeVos wrote in an e-mail message to the Orlando Sentinel. "It just takes some time to get his strength back.
"He is looking forward to getting back to Orlando and to the Magic games."
Rich DeVos, 86, attended at least five Magic home games last season, the 2012
This summer, DeVos and members of his family met with finalists for the Magic's general manager and head-coaching positions.
In 1997, DeVos received a new heart during a transplant procedure in London.