Firefighters responded to two fires in the same housing complex just after 11pm, Monday night.
Crews were called to 2614 Meadowbrook and 2609 Sycamore in East Windsor and found the laundry rooms in each building on fire. Both laundry room fires were extinguished and firefighters used fans to draw smoke from all of the buildings.
Dozens of residents were forced outside during the fires as smoke spread throughout the buildings.
No injuries have been reported.
Windsor Fire & Rescue says the fires were intentionally set.
Windsor Police are also on scene conducting an investigation.