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Verified Reviews for Locksmith Service pros in Greenville, OH

*The Angi rating for Locksmith Service companies in Greenville, OH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

*The HomeAdvisor rating for Locksmith Service companies in Greenville, OH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

Last update on January 06, 2026

Find Locksmiths in Greenville

Avatar for Guardian Protection

Guardian Protection

4.74(
2,120
)

Guardian Protection

4.74(
2,120
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."

William M on December 2024

Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."

William M on December 2024

Xenia Glass & Lock

4.77(
31
)

Xenia Glass & Lock

4.77(
31
)
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Additional DBAs - Xenia Glass & Lock Inc, Clinton County Glass. Additional phone - (937) 372-7171.

"It was necessary to install a second set of windows for three of the five replacements, Aaron who works for Xenia Glass and Lock checked all the windows the day after the installation and took videos and photos of the windows in question. His work indicated that three of the five window were defective. The young men , Kolton and Hunter Fox completed the project for Xenia Glass and Lock by replacing the ones that were not working properly. Kolton was helpful by explaining how to open/close and clean the windows. He was also helpful in the adjusting blinds for me. "

Theresa B on November 2025

Additional DBAs - Xenia Glass & Lock Inc, Clinton County Glass. Additional phone - (937) 372-7171.

"It was necessary to install a second set of windows for three of the five replacements, Aaron who works for Xenia Glass and Lock checked all the windows the day after the installation and took videos and photos of the windows in question. His work indicated that three of the five window were defective. The young men , Kolton and Hunter Fox completed the project for Xenia Glass and Lock by replacing the ones that were not working properly. Kolton was helpful by explaining how to open/close and clean the windows. He was also helpful in the adjusting blinds for me. "

Theresa B on November 2025

Sizemore Contracting LLC

5.00(
3
)

Sizemore Contracting LLC

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Additional emails - [email protected], [email protected]. Family owned & operated.

"Mr. Sizemore was prompt, professional and courteous."

Joann M on January 2018

Additional emails - [email protected], [email protected]. Family owned & operated.

"Mr. Sizemore was prompt, professional and courteous."

Joann M on January 2018

Avatar for Integrated MATRIX Solutions

Integrated MATRIX Solutions

5.00(
1
)

Integrated MATRIX Solutions

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Integrated-MATRIX-Solutions is a complete turn-key integrated low voltage systems design, installation and service corporation headquartered in Moraine Ohio. We employee roughly 40 full time employees and utilize a vast subcontract network across the USA to install and service all our systems and products.

Integrated-MATRIX-Solutions is a complete turn-key integrated low voltage systems design, installation and service corporation headquartered in Moraine Ohio. We employee roughly 40 full time employees and utilize a vast subcontract network across the USA to install and service all our systems and products.

Avatar for CINCINNATI HOME IMPROVEMENT COMPANY LLC

CINCINNATI HOME IMPROVEMENT COMPANY LLC

1.75(
4
)

CINCINNATI HOME IMPROVEMENT COMPANY LLC

1.75(
4
)
24 years of experience

Affordable Fire Storm Water Restoration, Damage Repair Contractor. Specializing in Roofing, Remodeling, Re Building and Repairs. Insurance Preferred Contractor. We are "Your Complete Property Solution".

"Horrible Horrible con artist ...... Took almost 10,000 dollars for a job never came close to even starting the job and supposedly used the money for materials for the job that i have yet to see the reciete or material. It is now to the point of taking legal action and contacting lawyer."

Ethan G on July 2019

Affordable Fire Storm Water Restoration, Damage Repair Contractor. Specializing in Roofing, Remodeling, Re Building and Repairs. Insurance Preferred Contractor. We are "Your Complete Property Solution".

"Horrible Horrible con artist ...... Took almost 10,000 dollars for a job never came close to even starting the job and supposedly used the money for materials for the job that i have yet to see the reciete or material. It is now to the point of taking legal action and contacting lawyer."

Ethan G on July 2019

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Locksmiths questions, answered by experts

First thing first: Make sure you’re using the right key. If it’s the correct key for your lock, there are a few reasons why it may not be working, like the key is worn out or the lock is jammed. Try lubricating the lock and pushing the door closed to ensure the mechanisms work correctly. If you’re still locked out, call in for help.

Keyless locks are often considered safer since they’re protected by passcodes instead of a physical key, making it harder to be picked. However, they are not infallible. And like all electronic devices, outdated models are more prone to problems and safety concerns. If you’ve experienced multiple lockouts in the past year, or your lock is responding slower than usual after you key in the passcode, it might be time to upgrade to a newer one. Even if your lock is working fine, you should still change your access code at least twice a year.

Rekeying should be done when employees leave or keys are lost, while replacement may be necessary for outdated or damaged locks.

Begin by checking the power source, typically a battery or wired connection. Ensure the battery is installed correctly, has sufficient charge, and isn't corroded. If it's a wired lock, examine the electrical connections to confirm they are secure and free from damage. Additionally, inspect the lock's programming or settings. Confirm that user codes or access credentials are programmed correctly and that any remote control devices are paired and functional.

Smart locks offer around the same level of safety as conventional locks with keys. The best way to secure your door locks is to combine routine locking mechanisms with other home safety features, like lighting, motion sensors, security cameras, and window and door sensors. 

Smart locks have the upper hand when it comes to convenience—you won't have to worry about your key not turning in the lock or fumbling around in your bag for your keys—but beyond that, any door with deadbolts will offer a similar degree of security.

The Greenville, OH homeowners’ guide to locksmith services

From average costs to expert advice, get all the answers you need to get your job done.

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