Crews had just responded to an issue with a water sprinkler when another call came in on the east side.
Platoon chief Kevin Forrest tells CHSJ News the first call was at a home on Brigadoon Court in Millidgeville.
He says on arrival crews found it was an activated sprinkler system in the house that caused some water damage.
At the same time, Fire crews were called to a possible structure fire on Simpson Drive in East Saint John.
It turned out the release valve on the home's water heater went causing steam to fill the home. Firefighters shut down power to the area and turned the house back over to the homeowner.