Silvia Umana, her 19-year old son Gilbert Diaz and 7-year-old daughter Guadalupe Perez died when flames ripped through their home July 21 in Richmond Hill.
Firefighters say a damaged cord from an air conditioner sparked the flames.
The funeral will be held at 10:15 a.m. at Holy Child Jesus Roman Catholic Church located at 111-86th Avenue in Richmond Hill.
Two firefighters suffered minor injuries battling the fire.
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