7 Types of Door Knobs Explained

Door knobs might seem like a small detail, but they play a big role in functionality and security. The right type ensures easy access while meeting privacy and safety needs. Whether you're replacing old knobs or choosing new ones, it's important to understand the different options available.

From simple passage knobs for interior doors to high-tech smart knobs, each type serves a specific purpose. Some are designed for security, while others are decorative. Knowing the differences helps you choose the right one for your home or project.

This guide breaks down seven common types of door knobs, explaining their functions and best uses. By the end, you'll know which type suits your needs best.

Passage Door Knobs

Passage door knobs are designed for interior doors where no locking mechanism is needed. They allow free movement between rooms, making them ideal for hallways, closets, and other non-private spaces. Unlike privacy or keyed entry knobs, passage knobs turn freely on both sides without a lock.

These knobs come in various styles and finishes, allowing homeowners to match them with their décor. They’re also among the easiest to install, typically requiring only a screwdriver.

Because they don’t include locks, passage door knobs are often more affordable than other types. They’re a practical solution for spaces where security isn’t a concern but a functional, stylish door knob is still needed.

Privacy Door Knobs

Privacy door knobs are designed for rooms where privacy is important, such as bedrooms and bathrooms. Unlike passage knobs, they feature a simple locking mechanism, usually a push-button or turn lock on the inside. This allows occupants to lock the door while still allowing emergency access from the outside using a small tool.

These knobs are common in homes, hotels, and rental properties, offering a balance between convenience and security. They come in various finishes and styles to complement different interiors.

While privacy knobs provide basic security, they aren’t meant for exterior doors since they can be unlocked easily. They work best for spaces where keeping others out temporarily is the main concern.

Dummy Door Knobs

Dummy door knobs are purely decorative and do not turn or latch. They’re typically used on doors that don’t require a locking or latching mechanism, such as wardrobe doors, cabinets, or double doors where only one side functions.

These knobs are usually surface-mounted, attaching directly to the door without internal hardware. They come in single or double configurations, depending on whether one or both sides need a handle.

Available in various styles and finishes, dummy door knobs offer a cohesive look while maintaining simplicity. They’re a great choice for adding a touch of design without full functionality.

Keyed Entry Door Knobs

Keyed entry door knobs provide added security, making them ideal for exterior doors, garages, and other entry points. They require a key to lock and unlock from the outside, while the inside usually features a turn-lock or push-button mechanism.

For extra protection, these knobs are often paired with deadbolts. Many models include security features like anti-pick and anti-bump technology.

Keyed entry knobs come in various styles and finishes to match different décors. If security is a priority, choosing a high-quality option ensures durability and peace of mind.

Storeroom Door Knobs

Storeroom door knobs are designed for security-focused areas, particularly in commercial settings. Unlike standard keyed entry knobs, they remain locked from the outside at all times and require a key to open. This ensures doors never accidentally remain unlocked, protecting valuable inventory or restricted spaces.

From the inside, the door can always be opened without a key, allowing for quick exits in an emergency. This makes storeroom knobs popular for storage rooms, supply closets, and secure offices.

These knobs are built for durability and frequent use, often featuring reinforced internal components. While most common in businesses, homeowners may also use them for securing garages, workshops, or home offices.

Communicating Door Knobs

Communicating door knobs are used for doors that connect two separate rooms while maintaining security. They typically feature locks on both sides, making them ideal for offices, hotel suites, or healthcare facilities where restricted access is necessary.

These knobs come in various configurations. Some allow both sides to be locked or unlocked as needed, while others have a key-operated mechanism for controlled access. This flexibility makes them useful in settings where privacy and security must be balanced.

In commercial buildings, communicating door knobs regulate access between spaces without needing multiple doors. While less common in homes, they can be useful in properties with shared living spaces or home offices requiring restricted entry.

Smart Door Knobs

Smart door knobs offer keyless entry and enhanced security, making them a modern alternative to traditional locks. They use keypads, fingerprint scanners, or smartphone connectivity to grant access. Many models also include remote access features, allowing homeowners to lock and unlock doors from anywhere.

These knobs are particularly useful for rental properties, Airbnb homes, and businesses, where managing multiple keys is inconvenient. Some models track entry logs, providing a record of access.

Smart door knobs require a power source, usually batteries, and may integrate with smart home systems. While they offer convenience, choosing a model with strong encryption prevents hacking.

For those wanting both security and ease of use, smart door knobs are a great option.

Choosing the right door knob depends on functionality, security, and design preferences. From passage door knobs for easy movement to keyed entry knobs for security, each type serves a specific purpose. Privacy knobs offer discretion, while dummy knobs add style without function. Storeroom and communicating knobs provide controlled access, and smart knobs bring modern convenience.

Before making a decision, consider the room’s purpose and security needs. With various styles and finishes available, there’s a door knob to suit every space. Investing in a high-quality option ensures durability, safety, and a polished look for your home or business.