When Should You Replace a Lock Instead of Repairing It?

A faulty lock doesn’t always need to be replaced. Depending on the problem, repairing or rekeying the existing lock may be a better option.

So how do you know when a mechanical lock can be repaired and when it’s time to replace it? We explain the warning signs, common causes of lock problems and what our locksmith technicians consider before recommending a repair or replacement.

Signs Your Lock Needs Attention

City Locksmiths has handled thousands of locks over the past 65-plus years and, in our experience, they rarely fail without warning. There are usually warning signs that something isn’t working properly before a lock stops working altogether.

Some of the warning signs our locksmiths regularly see include:

• A key becoming harder to turn than it used to be
• Having to jiggle or reposition the key
• A lock that has become stiff or occasionally jams
• Handles or lock hardware becoming loose
• Having to push or pull the door before it will lock
• A key becoming difficult to insert or remove
• Visible wear, corrosion or damage to the lock

Importantly, these signs don’t always mean the lock itself needs replacing. What appears to be a failing lock can sometimes be caused by the door, frame or other hardware. Identifying the actual cause is the first step in deciding whether the lock should be repaired or replaced.

When Can a Lock Be Repaired?

Many lock problems can be repaired without replacing the entire lock. If the lock is still in good condition, the problem may be caused by a worn component, damaged cylinder or sticking latch that can be repaired without changing the entire lock.

Our locksmiths will first identify what is causing the problem and whether the existing lock can be repaired safely and reliably.

If the existing lock is still secure, in good condition and replacement parts are available, repairing it can often be the better option.
Whether a repair is worthwhile depends on the age, condition and type of lock, as well as what has caused the problem.

When Should a Lock Be Replaced?

A lock should generally be replaced when it is badly worn, damaged, unreliable or no longer provides the level of security you need. Replacement may also be the better option if parts are no longer available or the lock has required repeated repairs.

Locks should also be inspected after a break-in or attempted break-in. Even if the lock still works, damage to the lock, door or surrounding hardware could affect its security.

We were once called to a commercial property in Onehunga where a lock was still operating after years of heavy use, but had become worn and unreliable. Although it could potentially have been repaired, our locksmith recommended replacement because we couldn’t be confident it would remain secure and reliable.

Is the Problem Actually the Lock?

What looks like a faulty lock can sometimes be a problem with the door. Doors can shift over time, causing the lock and strike plate to fall out of alignment.

For example, we often get calls from Auckland businesses where a lock has become difficult to operate. In some cases, the lock itself is still in good condition and simply needs the door alignment corrected.

Our locksmiths check the lock, door and surrounding hardware before recommending a repair or replacement.

What About Lost or Stolen Keys?

Losing a key doesn’t automatically mean the entire lock needs to be replaced. In many cases, a locksmith can rekey the existing lock, changing it so the missing key will no longer work.

If a key has been stolen and could be linked to your property, the lock should be rekeyed or replaced promptly so the key can no longer be used.

For digital locks, the solution may simply be to remove a lost credential, change a PIN or reprogram access rather than replace the lock.

Should You Change the Locks After Moving Into a New Property?

When you move into a new home or business premises, you don’t always know who may still have copies of the existing keys. Previous owners, tenants, employees, contractors or property managers may all have had access at some point.

You don’t necessarily need to replace the locks. If the existing locks are suitable and in good condition, they can often be rekeyed so the old keys no longer work. This gives you control over who has access without the cost of replacing the entire lock.

Is It Worth Upgrading an Older Lock?

If you’re replacing an older lock, don’t automatically replace it with the same type. It’s worth considering whether a newer lock could provide better security, reliability or convenience.

For some properties, this might mean upgrading to a higher-security mechanical lock. For others, particularly businesses, it could be an opportunity to consider digital locks or electronic access control.

A locksmith can recommend options based on the door, how the property is used and the level of security required.

How Do City Locksmiths Decide Whether to Repair or Replace a Lock?

Our technicians will first identify what is causing the problem and assess the overall condition of the lock. We also consider its age, security, availability of replacement parts and whether repairing it is likely to provide a reliable long-term solution.

Our aim is to recommend the most practical option rather than replace a lock unnecessarily. If it can be repaired safely and reliably, we’ll tell you. If replacement is the better option, we’ll explain why.

“You can’t always tell from the age of a lock whether it needs replacing. We still come across older locks that are perfectly serviceable, while relatively new locks can sometimes be beyond economical repair. It really comes down to the condition of the lock and what’s gone wrong with it.” — Daniel, Locksmith Technician at City Locksmiths

Need Help With a Problem Lock?

If your lock is becoming difficult to use, unreliable or has stopped working, our team can help identify the problem and recommend the best solution.

Contact City Locksmiths if you need a lock repaired, rekeyed or replaced. We work with residential and commercial locks across Auckland, including mechanical and digital locking systems.

Reviewed by Daniel, Locksmith Technician at City Locksmiths

Daniel has been a locksmith technician for over five years, with experience across all areas of locksmithing. As part of the City Locksmiths team, he works with both residential and commercial customers.