Types of Commercial Door Closers: How to Choose the Right One

A door closer that's undersized for its opening slams. One that's oversized won't let people push it open. And the wrong arm configuration can violate ADA opening-force requirements before the door is even installed. On a project with dozens or hundreds of openings, getting the door closer wrong is one of the most common (and most expensive to fix after the fact) specification mistakes in commercial door hardware.

Door closers control how a door returns to its closed position, and they come in more variations than most people realize: multiple mounting types, six ANSI/BHMA size ratings, and several arm configurations, each suited to a different door, traffic pattern, and code requirement. Get any one of those variables wrong, and you end up with a door that won't close fully (a life-safety and fire-code problem), one that closes too hard (a liability and accessibility problem), or hardware that wears out years before it should.

This guide breaks down the real decision points: mounting type, duty level, and arm configuration, so you can specify with confidence, whether you're speccing a single opening or standardizing hardware across a portfolio of buildings.

In This Article

What Is a Door Closer?

A door closer is a mechanical or hydraulic device mounted on a door and frame that controls the speed, force, and final latching action as the door swings shut. Beyond convenience, door closers serve a life-safety function: on fire-rated doors, a properly functioning closer is what keeps the door from being propped open and defeating the fire rating, and on any commercial door, it's the mechanism that keeps the opening compliant with accessibility and fire-code closing requirements.

Every commercial door closer sold in the U.S. is rated under ANSI/BHMA A156.4, the American National Standards Institute / Builders Hardware Manufacturers Association standard that governs cycle life, closing force, and durability testing for door closers.

What Are the Different Types of Door Closers?

Commercial door closers fall into two broad mounting categories, and the choice between them is mostly about aesthetics, door construction, and budget, not one being universally "better."

Surface-mounted closers are installed on the face of the door and frame, visible from one side of the opening. This is by far the most common configuration in commercial buildings because it's easier to install, easier to service, and works with almost any door and frame material. PDQ's 3100, 5100, 5300, 5500, and 7100 Series are all surface-mounted closers, together spanning light duty through extra heavy duty and covering the full range from low-traffic offices to the heaviest-use commercial entrances.

Concealed (overhead concealed) closers are mortised into the door and frame so the closer body is hidden from view, leaving a cleaner sightline. They cost more, take longer to install, and are harder to service, since accessing the mechanism means removing trim or, in some cases, the door itself. Architects specify them on high-end lobbies, historic renovations, and glass storefront systems where appearance is a priority worth the added cost and maintenance tradeoff.

Floor closers, mounted in a pocket in the floor beneath the door's pivot point, are a third, less common option used almost exclusively on all-glass doors and monumental entrances.

For the vast majority of commercial applications, including offices, schools, healthcare facilities, retail, and multifamily buildings, a surface-mounted closer is the right call. It costs less, installs faster, and is simpler for a facilities team to maintain over the life of the building.

What Duty Level Do You Need?

Once you've settled on surface-mounted, the next decision is duty level: how much daily traffic and force the closer needs to withstand. ANSI/BHMA A156.4 sizes closers 1 through 6 based on door width and weight, but in practical terms, most commercial specifiers think in four tiers:

The 5300 and 5500 Series are both Standard Duty and both ANSI/BHMA A156.4 Grade 1 rated with a cast, high-strength aluminum alloy body and adjustable sizing from BF through 6. The difference between them is cosmetic, not performance: the 5300 has a slimmer cover profile, while the 5500 uses a full cover. Choose between them on appearance, not duty level.

The 5100 Series steps up to Heavy Duty, still Grade 1 rated but built for demanding, high-traffic openings that exceed what a Standard Duty closer is designed to handle. The 7100 Series tops the lineup at Extra Heavy Duty with a cast iron body, forged steel arm, and a 1-1/2" diameter piston built to hold up under the highest-traffic, highest-abuse conditions.

A citation-ready fact worth remembering: ANSI/BHMA A156.4 Grade 1 closers, the classification covering all five PDQ closer series above, are cycle-tested to a minimum of 1 million cycles, meaning a closer used 100 times a day would be expected to perform reliably for more than 27 years before reaching its tested limit.

Undersizing a closer for its duty level is the single most common closer-related warranty call: a light-duty closer on a high-traffic entrance will wear out in a fraction of its expected life, while a closer sized correctly the first time avoids that entirely.

Regular Arm, Parallel Arm, or Top Jamb: Which Arm Configuration Do You Need?

The arm configuration determines where the closer body mounts and how much of its rated force actually reaches the door, and it's one of the most commonly overlooked variables in a hardware spec.

• Regular arm: mounts the closer body on the pull side of the door and delivers the closer's full rated closing force. This is the benchmark against which the other configurations are measured.

• Parallel arm: mounts the closer body on the push side, parallel to the door, for a lower-profile look in corridors and vestibules. Because of the arm geometry, this configuration delivers roughly 20–25% less closing force than the same closer mounted as a regular arm, meaning a closer that provides Size 4 force as a regular arm may only deliver Size 3 force as a parallel arm.

• Top jamb: mounts the closer body on the frame head rather than the door itself, used when a door's top rail is too narrow to accept a regular-arm mounting.

This is why closer selection isn't just "pick a size": the arm configuration can shift the effective duty level down a full size, which matters most on doors that are already near the upper end of their traffic and weight range.

Do Door Closers Need to Meet ADA and Fire Code Requirements?

Yes. Two separate sets of requirements apply to almost every commercial door closer installation

Accessibility (ADA/ICC A117.1): On interior, non-fire-rated doors along an accessible route, the door must open with no more than 5 pounds of force. Closing speed is also regulated: from a 90-degree open position, the door must take a minimum of 5 seconds to reach 12 degrees from the latch, giving people using mobility aids or carrying items enough time to clear the opening. Exterior and fire-rated doors are exempt from the 5-pound limit and instead follow International Building Code (IBC) limits of 30 pounds of force to set the door in motion and 15 pounds to fully open.

Fire rating: On a labeled fire door, the closer isn't optional equipment; it's part of what allows the door to carry its UL fire rating. PDQ's 5500, 7100, and 3100 Series closers are all UL listed for use on swinging fire doors rated up to three hours, meaning they've been tested as part of a complete fire door assembly, not just as a standalone closing mechanism. Swapping in a non-listed closer on a rated opening voids that listing, even if every other component of the door is compliant.

How Do You Adjust a Door Closer?

Most commercial closers have three adjustment valves on the closer body:

• Sweep speed: controls general closing speed across most of the door's swing.

• Latch speed: controls the final few degrees of closing, where the door needs enough speed to fully engage the latch.

• Backcheck: cushions the door against over-swinging when it's opened forcefully. 

Meeting the ADA closing-speed requirement above usually means slowing the sweep valve slightly while confirming latch speed still lets the door fully close and engage. A closer adjusted only for a slow, "soft" close can sometimes fail to latch at all, a security and fire-code problem hiding behind what looks like a comfort feature. On a fire-rated door, confirm the final adjustment still allows full latching every time; a door that swings closed slowly but doesn't latch does not maintain its fire rating.

Key Takeaways

• Surface-mounted closers cover the vast majority of commercial applications; concealed closers trade cost and serviceability for a cleaner appearance.
• ANSI/BHMA A156.4 rates closers in sizes 1–6, and duty level (light, standard, heavy, or extra heavy duty) should match actual door traffic, not just door width. PDQ's lineup runs 3100 (light) through 5300/5500 (standard) to 5100 (heavy) and 7100 (extra heavy).
• Arm configuration matters as much as size: a parallel arm installation delivers roughly 20–25% less force than the same closer mounted as a regular arm.
• ADA limits opening force to 5 pounds on interior accessible doors and requires a minimum 5-second closing time from 90 to 12 degrees; fire and exterior doors follow IBC's 30/15-pound limits instead.
• A closer on a fire-rated opening must be UL listed as part of that door assembly. Swapping in a non-listed closer voids the door's fire rating regardless of its other specs.

Ready to Specify the Right Door Closer?

Whether you're specing a single opening or standardizing hardware across a portfolio, PDQ's 3100, 5100, 5300, 5500, and 7100 Series door closers cover light, standard, heavy, and extra-heavy-duty applications, all ANSI/BHMA A156.4 Grade 1 rated and UL listed for fire doors up to three hours. Contact PDQ or talk to a regional sales representative to work through the spec for your project.