Chris Carter belted a two-run homer off Jerome Williams in the seventh inning, and Bud Norris and two relievers combined on a shutout in Houston's 2-0 triumph over the Angels.
Norris (5-4) allowed four hits, walked three and fanned six over six innings. The right-hander is 3-0 -- all this season -- with a 0.43 ERA in three lifetime starts against the Angels.
"Facing the Angels, I took the challenge," Norris said. "They're a good ball club. I can't give enough credit to (catcher Jason) Castro. This group is coming together and it's good to see."
Jose Cisnero allowed two hits over the ensuing two innings and Jose Veras worked out of trouble in the ninth for his 10th save.
The Astros won their season-high fourth straight game. It's their longest winning streak since taking four in a row May 21-25 last season.
Williams (4-2) fanned six over seven innings, but allowed three hits, including the homer, and a trio of walks to have his three-decision winning streak broken.
The Angels, losers in four of their last six following an eight-game winning streak, got a pair of doubles from Mike Trout.
Los Angeles wasted a bases-loaded opportunity in the sixth, an inning that saw Trout picked off at second following a double. Howie Kendrick struck out to end the inning.
J.D. Martinez singled to center with one out in the seventh, and with two down, Carter smashed the first pitch of his at-bat over the wall in left field.
"Everything was working for me. I thought I pitched well throughout the game," Williams said. "That one pitch to Carter, I left it up and he took advantage of it."
Trout grounded out to leave two runners on base in the seventh and he again failed to come through in the ninth. J.B. Shuck was hit by a pitch with two outs, and Erick Aybar's base hit fell between three fielders in right-center. Trout, though, grounded into a force play to end it.
Houston leads the season series, 5-3 ... This was Williams' first loss since May 5 against Baltimore ... The Angels left 11 men on base ... Norris threw 100 pitches, five less than Williams.