Rekeying vs. Replacing Locks: Which Is Right for You?

Lost keys? New home? Broken lock? You need either rekeying or replacement.


Rekeying changes your existing lock so old keys won't work ($20-$50). Replacement installs brand-new hardware ($50-$300+). One saves money, the other upgrades security.



Here's how to choose what's best for your Manchester home.

Key Takeaways

Rekeying = Same lock, new key. Good for: Lost keys, moving homes, or just wanting peace of mind. Costs $20–$50 per lock.


Replacing = Brand-new hardware. Good for: Broken locks, smart upgrades, or style changes. Runs $50–$300+ per lock.



Pro Tip: If your lock looks like it’s survived a zombie apocalypse, replacement’s your best bet. Otherwise, rekeying’s the wallet-friendly move.

What Is Rekeying a Lock?

Rekeying changes your lock's inner workings. A locksmith rearranges small pins inside. Your old key stops working. Only the new key will turn the lock.

When should you rekey?


New homeowners should always rekey. Previous owners might have extra keys. Lost your keys? Rekey immediately. Businesses rekey when employees leave. It's fast and affordable security.

Why pick rekeying?


It costs less than replacement - usually $20-$50 per lock. The job takes about 30 minutes per lock. You keep your existing hardware. No need to buy new locks.

When rekeying won't work


Broken locks need replacement. Rusty or sticking mechanisms won't improve. Old locks lack modern security features. If your lock looks worn out, consider replacement instead.

What Does Replacing a Lock Mean?

Replacement means getting all new hardware. The old lock comes out completely. A brand new one goes in its place. You get fresh keys and updated technology.

Time for new locks?


Replace when your current lock is broken or worn out. Upgrading to smart locks or high-security deadbolts? That requires replacement too. Want a fresh look? New finishes can modernize your doors.

Why people choose replacement


New locks offer better protection. Modern designs resist picking and drilling. You can add keyless entry or smart features. Everything works smoothly from day one.

The trade-offs


New locks cost more - typically $50-$300+ per lock. Installation takes longer than rekeying. You'll need to choose new hardware that fits your door

Rekeying vs. Replacement: A Simple Comparison

A man is opening a door with a key in his hand.

Let's look at how these options differ. Rekeying is the more affordable choice, typically costing between $20 to $50 per lock. Full replacement runs higher, usually $50 to $300+ depending on the hardware you select. The price difference comes down to materials - rekeying uses your existing lock while replacement needs all new parts.


Time is another key factor. A professional can rekey most locks in about 30 minutes. Complete replacement takes longer - plan for 1-2 hours per lock. Why the difference? Installation requires precise fitting and testing to ensure proper operation. Rekeying simply modifies what's already there.


Security needs matter too. Rekeying maintains your current protection level by changing the key configuration. Replacement lets you upgrade to modern security features like bump-proof cylinders or smart lock technology. New locks often come with better construction and warranty coverage too.



So which should you choose? Rekeying works best when you just need to invalidate old keys - after moving, losing keys, or changing access permissions. Replacement makes sense for damaged mechanisms, security upgrades, or when you want a fresh look. Both solutions have their place in home security.

How to Choose Between Rekeying and Replacing Your Locks

Stuck deciding? Answer these simple questions.

First, check your current locks. Do they work smoothly? No rust or damage? If yes, rekeying makes sense. It's the smarter choice when your hardware still has life left.

Want better security? Replacement is the way to go. New locks offer modern protection. Look for Grade 1 or ANSI-rated models - they resist picking and forced entry better than basic locks.

Money tight? Rekeying saves big - often 50-80% compared to replacement. It solves most access problems without the higher cost of new hardware.

Should You DIY or Call a Locksmith?

Thinking about handling your locks yourself? Here's what you should know first.

The Risks of DIY


You might void your lock's warranty by tampering with it yourself. One wrong move can leave you with a jammed door that won't open. Misaligned parts can damage your door frame over time. Without proper tools, you could strip screws or break delicate components.

Why Professionals Do It Better


Locksmiths have specialized tools you don't. We've seen every lock problem imaginable. Our work comes with guarantees - if something isn't right, we'll fix it at no extra cost. We get the job done right the first time, saving you frustration.

When DIY Might Work


Simple tasks like lubricating a sticky lock are fine to try yourself. Changing batteries in smart locks is usually safe. But for anything involving internal mechanisms, the risks often outweigh the savings.

After Your Lock Service: What's Next?

Your locks are working perfectly now - here's how to keep them that way.

Test Everything Immediately


Try every key in every lock before we leave. Make sure they turn smoothly without sticking. Check that deadbolts throw completely and doors latch properly. This quick test prevents future headaches.

For Rentals and Businesses


Keep a written record of who has which keys. Note the date of service and how many copies exist. This documentation helps track access and simplifies future rekeying needs. Digital notes work great for this.

Ongoing Maintenance Matters


Schedule annual lock checkups - we can do this during other home maintenance visits. Regular lubrication prevents wear and keeps mechanisms working smoothly. Watch for early warning signs like difficulty turning keys or delayed locking.


Bonus Tips


Store spare keys securely (not under doormats!)

  • Consider a keyless entry system if you frequently lose keys
  • Update your security whenever living situations change.

Frequently Asked Questions

Can all locks be rekeyed?


Most standard locks can be rekeyed without issues. However, antique locks or certain smart lock models might need complete replacement instead. Our locksmiths can check yours during a free assessment.

How long does rekeying take?


A professional typically needs about 30 minutes per lock. The exact time depends on the lock type and condition. We work efficiently to minimize disruption to your day.

Do you offer mobile rekeying in Hartford?


Absolutely! Atlas provides 24/7 mobile locksmith services across all of Central Connecticut, including Hartford. We come to your home, office, or vehicle with all necessary equipment. Same-day service is available for emergencies.

Is rekeying cheaper than replacing locks?


Yes, significantly. Rekeying costs about 50-80% less than full replacements. It's the budget-friendly way to maintain security when your existing hardware is still in good shape.

How often should locks be serviced?


We recommend annual maintenance checks. Regular lubrication and inspection can prevent most common lock problems. Businesses with high traffic might need more frequent service.

Can you rekey locks to use the same key?


Yes! We can configure multiple locks to work with a single key for your convenience. This is especially helpful for homes with several exterior doors.


What's your service area?


We cover Manchester, Hartford, and all surrounding towns in Central CT. Same reliable service whether you're in Glastonbury or East Hartford.

Emergency services available?

Our team responds 24 hours a day to lockouts and urgent security needs. Call any time - nights, weekends, and holidays included.

Which Option is Right For You?

Here's the simple breakdown to help you decide:

  • Choose rekeying when you just need to update your keys – it's fast, affordable, and keeps your existing hardware

  • Go with replacement if your locks are damaged, outdated, or you want upgraded security features

Still unsure? That's exactly what we're here for. Our Manchester locksmiths can assess your situation and recommend the best solution during a free, no-pressure consultation. We'll explain your options in plain English – no confusing jargon or pushy sales tactics.

Need an expert opinion right now?

Call Atlas Locksmiths at 860-558-9940 for:

✓ Same-day service in Manchester and all of Central CT

✓ 24/7 emergency lock assistance

✓ Honest advice you can trust

We make it easy to get the right security solution – whether that's a simple rekey or complete lock replacement. Your safety is our priority.

Call today and sleep easier tonight knowing your property is properly secured.

Call Now