Sergeant Bevan Roe and Constable Darren Norman spent two days in Yarloop to assist with co-ordinating road blocks during the blaze that claimed more than 160 homes and killed two men.
Mirrabooka officer in charge Neil Morton-Smith said his staff spent 30 hours in two days assisting.
“They went down on January 9 and did 16 hours, came back to Perth, then went back down on the 10th and did 14 hours,” Senior Sergeant Morton-Smith said.
He said officers from other Perth metro stations were also sent down.
More than 100 firefighters continued to fight the blaze last week.
The blaze burnt more than 71,000ha.