In Calgary, you can recycle a used or damaged car seat at KidSeat Recyclers for a $15 fee. A CPST may be able to use your seat (clean and in usable condition, even if the harness has been cut for insurance purposes), so you can reach out to a CPST near you.
Can you donate car seats in Canada?
You cannot advertise, sell or give away car seats or booster seats unless they meet Transport Canada safety requirements.
Where can I donate a car seat and stroller near me?
You can check with churches, homeless shelters, women's shelters, and your local job and family services. Obviously, rules will vary from place to place. But a lot of these places – especially women's and homeless shelters may love to have your old car seat.