Harden came up two rebounds short of a triple-double, pumping in 27 points to go with 10 assists and eight rebounds. Howard had 20 points and 22 rebounds for the 16th 20-point, 20-rebound double-double of his career against his former team on his 28th birthday. Jones had 16 points and 13 rebounds.
Chandler Parsons added 18 points as the Rockets improved to 10-3 in their last 13 games.
Glen Davis netted 18 points and collected six rebounds for the Magic, who fell to 1-9 on the road this season.