How to Change a Door Lock: Step-by-Step Guide

Changing a door lock might seem like a daunting task, but it's actually quite manageable with a bit of guidance. Whether you've just moved into a new home, lost your keys, or want to upgrade your security, knowing how to change a door lock is essential. In this guide, we'll walk you through everything you need to know, from deciding when it's time to change your locks to choosing the right type of lock and the step-by-step process to get the job done. So, grab your tools and let's get started on making your home a safer place!

When Should You Change Your Door Locks?

Changing your door locks is essential in several situations to ensure the security of your home. Here are some scenarios when you should consider changing your locks:

• Moving into a new home: You never know who might have a copy of the keys from the previous owners.
• Lost or stolen keys: If your keys are lost or stolen, it's crucial to change the locks immediately.
• Break-ins or attempted break-ins: Any sign of forced entry should prompt you to change your locks.
• Old or worn-out locks: Over time, locks can wear out and become easier to pick or break.
• Upgrading to modern security: Smart locks offer advanced features that can enhance your home security.

How to Choose Your New Door Lock

Choosing the right door lock involves considering several factors to ensure it meets your security needs and fits your lifestyle. Here are some key points to help you make the best choice:

1. Security Features

• Look for locks with high-security ratings. The American National Standards Institute (ANSI) rates locks from Grade 1 (highest) to Grade 3 (lowest). Grade 1 locks offer the best security for residential doors.
• Consider additional security features such as anti-pick, anti-bump, and anti-drill protection.

2. Type of Lock

• Deadbolts: These provide the highest level of security. Single-cylinder deadbolts are the most common, while double-cylinder deadbolts require a key for both sides, adding extra security.
• Knob Locks: These are less secure and often used in conjunction with deadbolts. They are suitable for interior doors.
• Lever Handle Locks: These are easier to operate, especially for people with disabilities, and are also commonly used for interior doors.
• Smart Locks: Smart locks offer advanced features such as keyless entry, remote access, and integration with home automation systems. They are convenient and can enhance your home security.

3. Aesthetics and Finish

Choose a lock that matches the style and finish of your door and other hardware. Common finishes include brass, nickel, bronze, and chrome.

4. Budget

Locks come in a wide range of prices. While it’s important to invest in a good quality lock, there are options available for various budgets. Consider your needs and choose the best lock you can afford.

By taking these factors into account, you can select a door lock that not only provides the security you need but also fits seamlessly with your home's style and lifestyle.

Replacing vs. Rekeying

When it comes to changing your door lock, you have two main options: replacing the lock or rekeying it.

Replacing the Lock:

Replacing the lock involves removing the old lock and installing a completely new one. This option is ideal if:

• Changing Lock Types: Sometimes, you may want to switch from one type of lock to another, such as upgrading from a knob lock to a smart lock for better security. For example, the eufy Smart Lock S230 offers reliable security with the added benefit of app control for remote access and monitoring. Similarly, the eufy  Video Smart Lock S330 not only provides robust security but also includes a video doorbell for added convenience and surveillance.

• Damaged or Worn-Out Locks: If your existing lock is damaged or showing signs of wear and tear, replacing it with a new one ensures that your door remains secure.

Rekeying the Lock:

Rekeying involves changing the internal pins of the lock so that it works with a new key while keeping the existing lock hardware. This option is suitable if:

• Lost or Stolen Keys: If you’ve lost your keys or they’ve been stolen, rekeying allows you to maintain security without replacing the entire lock.

• Moving into a New Home: When you move into a new house, rekeying ensures that previous owners or anyone with a copy of the old keys can no longer access your home.

• Cost-Effective Solution: Rekeying is generally less expensive than replacing the entire lock, making it a budget-friendly option if the existing lock is still in good condition.

Step-by-Step Guide on How to Change Locks on Door

Changing a door lock is a straightforward process that you can do yourself with some basic tools and a bit of patience. Here’s a step-by-step guide on how to replace door lock to help you through it:

1. Tools You'll Need

• Measuring tape: To check the backset and ensure the new lock fits.
• Chisel: For any adjustments needed on the door or frame.
• Hammer: Useful for chiseling and securing the strike plate.
• Pencil: For marking positions on the door.
• Wood shims: To hold the door steady during installation.
• Pin: Useful for removing interior knobs or handles.
• Allen keys: Sometimes needed for specific adjustments.
• Multi-bit screwdriver: Handy for different screw types.
• Door lock set: The new lock you’re installing.

2. Remove the Old Lock

Unscrew the Interior Screws:

• Locate the screws on the interior side of the door handle or deadbolt.
• Use a screwdriver or drill to remove these screws. This will release the interior knob or handle from the door.

Remove the Interior and Exterior Knobs/Handles:

• Gently pull apart the interior and exterior knobs or handles. You might need to wiggle them slightly to loosen them.

Remove the Latch Mechanism:

• Find the screws on the edge of the door that hold the latch mechanism.
• Unscrew these and carefully pull the latch mechanism out from the door.

3. Prepare the New Lock

• Measure the backset (the distance from the edge of the door to the center of the lock hole) to ensure the new lock matches.
• Verify that the new lock fits the existing holes in your door.

• Follow the manufacturer’s instructions to assemble the new lock parts. This often involves inserting the latch mechanism into the door and preparing the knobs or handles.

4. Install the New Lock

• Slide the new latch mechanism into the hole on the edge of the door.
• Secure it with screws, making sure it is properly aligned.

• Position the exterior part of the lock so that it aligns with the latch mechanism.
• Insert any necessary connecting rods or pins as per the instructions.

• Place the interior part of the lock on the opposite side of the door, aligning it with the exterior part.
• Insert and tighten the screws to secure both sides of the lock together.

5. Secure the Strike Plate

• Remove the old strike plate from the door frame.
• Position the new strike plate and secure it with screws.
• Ensure it aligns properly with the latch or bolt for smooth operation.

6. Test the New Lock

• Turn the handle or knob to ensure the latch operates smoothly.
• For deadbolts, use the key or thumb turn to extend and retract the bolt.

• If the lock doesn’t operate smoothly, slightly loosen and reposition the screws, then retighten them until the lock functions correctly.

Conclusion

Keeping your home secure is essential, and knowing how to change a door lock is a vital part of that. Whether you're upgrading to a smart lock, changing a front door lock, or replacing an old one, having the right tools and knowing the correct procedures will make the process smooth and successful. By following the steps in this guide, you can confidently handle your door locks and enhance your home's security.

FAQs

Do I Need Professional Help to Change a Door Lock?

Not necessarily. Changing a door lock is a relatively simple task that you can do yourself with basic tools. However, if you're unsure about the process, seeking professional help is always a good option.

How Often Should Door Locks Be Changed?

There isn't a specific timeline, but it's recommended to change your locks whenever you move into a new home, lose your keys, or experience a security breach.

Can I Use the Same Keys for the New Lock as the Old One?

If you choose to rekey your existing lock, you can use new keys without replacing the entire lock. However, if you're replacing the lock with a new one, you'll need to use the keys that come with the new lock.