Both Springs: Chicago garage-door spring checklist

Quick answer

When a garage door spring breaks in Chicago, ask whether the company replaces both springs, whether the trip/diagnostic fee is credited toward the repair, and who will actually show up.

Checklist

1. Will you replace both springs? Springs work as a pair. Replacing only one often leads to the second one failing soon after.
2. Is the trip / service fee credited if I approve the repair?
3. Who is coming? Employee or subcontractor?
4. What warranty do you give on the springs and labor?
5. Do you have a phone and website I can find on your own site?

Notes

Customer never pays the directory. Call shops that publish their own contact information.