Difference Between Deadbolt Lock and DoorKnob Lock – Which One Do You Need?

Feb 23, 2019

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Difference Between Deadbolt Lock and DoorKnob Lock – Which One Do You Need?

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

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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

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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