Debra Dunning is an American actress, model, television host, spokesperson and comedienne. She is best known for playing Heidi on Home Improvement (1993-1999). Dunning played Heidi Keppert, the "Tool Time girl", on the ABC sitcom Home Improvement from season 3 to season 8, having guest-starred in an earlier season. She appeared in Dangerous Curves (1988) and the American Gladiators Celebrity Challenge (1989).
Her first pregnancy with daughter Spencer was written into Home Improvement (1991)'s season six.
Mother, with ex-husband Steve Timmons, of one daughter, Spencer Schae Timmons (b. December 2, 1996), and two sons, Stony Timmons (b. 2000) and Sysco Timmons (b. 2008).
(May 11, 1997) Married her longtime boyfriend Steve Timmons. They divorced in 2018.