The Blazers struggled to claim control in the first half at the EnergySolutions Arena but a strong third quarter display helped them to a 105-94 triumph.
"We played sluggish tonight," Aldridge told reporters after the game. "We didn't have that killer [instinct] in us tonight. Guys were just tired tonight.
"Every game can't be great. I thought tonight was a good win for us because we came here and didn't make shots, but guys still put it up."
Portland have made their best start to a season since the 1990-91 campaign.