Out-of hospital cardiac arrest (OHCA) is associated with poor outcomes, with only 10% reported survival. Bystander CPR and early defibrillation with an Automated External Defibrillator (AED) can increase survival up to 5-fold. Currently, AEDs are used in 3% of OHCA cases in Toronto, compared to 20% in Seattle, where survival rates are double those in Toronto. A small proportion of AEDs in Toronto are registered. Over a one-year period, we set out to improve the AED landscape in Toronto.