
Many homeowners in the Phoenix Valley are confused about the difference between a deadbolt and a doorknob lock. Understanding these two can greatly improve your home or business security.
Main Differences
Feature | Doorknob Lock | Deadbolt Lock |
|---|---|---|
Security Level | Basic / Low | High |
Locking Mechanism | Spring loaded, easy to push back | Throws a solid bolt into the frame |
Key Operation | Usually key on outside only | Key on one or both sides |
Best Used For | Interior doors, privacy | Exterior doors, main entry points |
Resistance to Forced Entry | Low | Much higher |
When to Use Each
Doorknob Locks
Good for interior doors (bedrooms, bathrooms, closets)
Convenient but not secure enough for outside doors
Deadbolt Locks
Essential for all exterior doors
Much stronger against kick-ins and forced entry
Highly recommended for front doors, back doors, and garage doors

Our Recommendation for Arizona Homes
For maximum security, we recommend installing a deadbolt on every exterior door. Many people combine a deadbolt with a doorknob for convenience, but the deadbolt is what actually protects your home.
We also offer high-security deadbolts and smart deadbolts with thumb turns or keyless entry.
Related Services
Full Lock Replacement
Service Areas: Tempe Phoenix Mesa Scottsdale Chandler Gilbert Glendale Peoria Avondale Goodyear and surrounding cities.
Not sure which lock is best for your doors? Call Speedway Locksmith at 480-277-7674. We’ll give you honest advice and professional installation.
Last Updated: June 6, 2026
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