State Police released photographs of the man taken by surveillance equipment at the store off Route 924.
The thief is described by police as white, with brown hair and of average height and weight.
A red pickup truck and a red car were observed being operated in association with the thefts, State Police at the Bel Air Barrack said; however, there is a description of only one thief.
The snowblowers were stolen between 6:30 and 7:30 p.m. on both occasions, according to State Police, who said the total value of the stolen items is estimated at $1,800.
Anyone with information is asked to call Trooper Michael Dowling at the State Police Bel Air Barrack at 410-879-2101 ext. 404, or via e-mail at firstname.lastname@example.org.