Apart from heroku db:pull (uses taps and imports from psql to any local sql database) there is a faster way to download and import the production data to your local server.
1. Generate a dump file of the production database using
heroku pgbackups:capture
This will actually run the pg_dump script on the production server
2. List the backups
heroku pagbackups
3. Get the download-able url of the latest backup listed
heroku pgbackups {lates_backup_name}:url4. Download the file using the returned url.
Postgresql can use the files comming from the pg_dump with the usage of pg_restore.
Now try this
pg_restore --verbose --clean --no-acl --no-owner -h 127.0.0.1 -U savvasmsc -d sweetlifer_development ~/Downloads/b019.dump