Door Closer Repair & Installation
$150 - $400 | 30-60 minutes | Available 24/7
Triton Locksmith repair and install commercial door closers for $150-$400. LCN, Norton, Dorma/Dormakaba, and Yale closers. If yours is leaking oil, slamming, or not closing fully, we fix or replace it same-day. Takes 30-60 minutes.
What Door Closer Problems Do We Fix?
Oil leaks, doors slamming, doors not latching, inconsistent closing speed, and broken arms. Door closers are hydraulic. The cylinder contains oil that controls how fast the door swings. When the seals wear out, oil leaks and the closer loses hydraulic control. That's when doors start slamming or not closing at all.
We also see a lot of broken closer arms. Someone props a door open with the arm extended past its limit and the metal fatigues. Replacement arms are cheaper than a full closer and we carry the most common sizes in the van.
What Door Closer Brands Do We Install?
LCN, Norton, Dorma/Dormakaba, Yale, and Hager. LCN 4040XP and 4041 are the industry workhorses for commercial doors. We've installed thousands of them. Norton 7500 is a solid mid-range option. Dorma/Dormakaba TS93 is what we use for heavy doors and high-traffic entries.
According to the Door and Hardware Institute (DHI), a commercial door closer in a high-traffic building (80-100 cycles per day) should last 7-10 years. Cheaper closers fail in 2-3 years. We install closers rated for the traffic your door actually sees.
How Do We Size a Door Closer?
Closer size is rated 1-6 based on door width and weight. A size 3 handles standard 36-inch commercial doors up to 110 lbs. A size 5 handles 48-inch doors up to 220 lbs. Most storefront and office doors need a size 3 or 4. Double doors and heavy fire doors need size 5-6.
We also adjust the backcheck, sweep speed, and latch speed during installation. Backcheck prevents the door from swinging open too hard (important in windy South Florida). Sweep controls the closing speed. Latch speed controls the final 5 degrees where the door latches shut.
ADA Compliance and Door Closer Settings
The Americans with Disabilities Act (ADA) sets specific requirements for door closer force and speed. Interior doors must open with no more than 5 lbs of force. Exterior doors have no force limit but must close slowly enough for wheelchair users. The door must take at least 5 seconds to close from the fully open position to 12 degrees from the latch.
Triton Locksmith adjusts every closer we install to meet these ADA requirements. We carry a force gauge on the van to measure and document compliance. For ADA compliance audits, we test every door and provide a written report.
Types of Commercial Door Closer Mounts
- Regular arm (standard): Closer mounts on the pull side of the door. The arm extends straight out. Most common installation.
- Top jamb mount: Closer mounts on the frame header instead of the door. Used when the door face is not suitable for mounting (glass, decorative).
- Parallel arm: Closer mounts on the push side. The arm folds parallel to the door. Used on aluminum storefront doors and when aesthetic appearance matters. Slightly less efficient than regular arm.
- Concealed/overhead: Closer hidden inside the door header. Found in upscale lobbies and conference rooms. Dormakaba and ASSA ABLOY make the best concealed closers.
When to Repair vs. Replace a Door Closer
Replace if it is leaking oil, is more than 8 years old, or cannot hold adjustment. Repair if the problem is a broken arm, loose mounting screws, or incorrect valve settings. Arm replacement costs $75-$150 and takes 15 minutes. A full closer replacement costs $200-$400 and takes 30-60 minutes. Triton Locksmith always inspects the existing closer before recommending replacement.
Where Does Triton Locksmith Service Door Closers?
Any commercial building across South Florida. Offices, retail, restaurants, medical facilities, schools, and government buildings. Boca Raton, Coral Springs, Coconut Creek, Fort Lauderdale, West Palm Beach. Same-day service. Call (561) 524-8500.
Common Questions
How much does a door closer replacement cost?
Standard commercial closer (LCN 4040XP): $200-$300 installed. Heavy-duty closer (Dorma TS93): $300-$400. Repair of an existing closer (arm replacement, valve adjustment): $150-$200.
My door closer is leaking oil. Can it be fixed?
If it's a minor seal leak, sometimes yes. But most leaking closers are past the point of reliable repair. We usually recommend replacement because a new closer costs $200-$300 and a repaired one will likely leak again within months.
How long does a commercial door closer last?
Quality closers (LCN, Norton) last 7-10 years under normal commercial use. Cheap closers from the hardware store last 2-3 years. The difference in upfront cost is $50-$100. The difference in lifespan is 5-7 years.
Can you adjust a closer that's slamming the door?
Yes. We adjust the sweep speed and backcheck valves. Takes about 15 minutes. If the closer is old and the hydraulic fluid is degraded, adjustment won't hold and replacement is needed.
Do door closers need maintenance?
Annual inspection and adjustment is recommended for high-traffic doors. We offer maintenance contracts that include closer inspection.
What size door closer does my door need?
Size depends on door width and weight. Size 3 handles standard 36-inch doors up to 110 lbs. Size 4 handles wider or heavier doors. Size 5-6 for double doors and fire doors. Triton Locksmith sizes the closer during the visit.
Can you adjust a closer to meet ADA requirements?
Yes. ADA requires interior doors to open with no more than 5 lbs of force and close in at least 5 seconds. Triton Locksmith adjusts sweep speed, backcheck, and spring tension to meet these requirements and documents compliance.
What is the difference between regular arm and parallel arm mounting?
Regular arm mounts on the pull side with the arm extending straight. Parallel arm mounts on the push side with the arm folding flat. Parallel arm is used on storefront doors and for better appearance but is slightly less efficient.
Do you carry door closers on the van for same-day replacement?
Yes. Triton Locksmith carries LCN 4040XP, Norton 7500, and other common commercial closers in sizes 3-5 on the van. Most replacements happen on the first visit.
Can a door closer be repaired if the arm is broken but the body is fine?
Yes. Arm replacement costs $75-$150 and takes about 15 minutes. If the closer body is not leaking oil and holds adjustment, replacing just the arm is the cost-effective repair.
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Need Door Closer Repair & Installation?
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(561) 524-8500