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Crenshaw Lock

Door Closer Repair in Claremont · 24/7 mobile

Door Closer Repair in Claremont, CA

Crenshaw Lock Company provides mobile door closer repair, adjustment and replacement for commercial doors in Claremont, California. We are available 24/7 and come to your door, whether it is a Village shop or a campus building. Call (323) 997-8867 to talk through what your door is doing.

  • Mobile to your Claremont location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Hydraulic door closer mounted at the top of a commercial door
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A door closer is easy to ignore until it fails. Then a door slams hard enough to rattle the frame, hangs open and defeats the latch, or drifts shut so slowly that it never engages. In Claremont that can mean a shop on Yale Ave letting the air conditioning out, a office door that will not secure at night, or an academic building door that no longer meets the access-control hardware it was installed with.

We repair, adjust and replace hydraulic door closers on commercial doors. Many problems are not a dead closer at all. Speed valves drift, arms loosen, mounting screws strip out of old frames, and a door that has sagged on its hinges makes a good closer behave badly. Part of our job is figuring out which of those you really have before suggesting a replacement.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead tech David Shar. We are fully mobile, with no storefront to visit. We bring the work to Claremont, at any hour, and explain what we find in plain language.

How it works in Claremont

  1. 1

    Describe the symptom

    Call (323) 997-8867 and tell us what the door does: slams, stalls, hangs open, leaks oil, or will not latch. Tell us whether it is an exterior door, a stairwell door, or a fire-rated door, since that affects what we can change.

  2. 2

    Inspect the whole door

    We look at the closer body, arms, brackets and mounting, and also at hinges, the latch, the strike, the threshold and the frame. A sagging door or a binding latch is often the real culprit.

  3. 3

    Adjust before replacing

    If the closer is sound, we tune the sweep and latch speeds and any backcheck, and tighten or re-seat the mounting. Often this restores normal operation without new hardware.

  4. 4

    Replace when it is warranted

    If the unit is leaking fluid, cracked, or no longer holds adjustment, we replace it with a closer sized properly for the door's width, weight and exposure, and mount it correctly.

  5. 5

    Test and hand off

    We cycle the door repeatedly, confirm it closes and latches fully, and check that it works with any electric strike or access-control hardware. We show you where the adjustment valves are for future reference.

Need door closer repair in Claremont?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • Whether the closer needs only adjustment and tightening or a full replacement
  • The size, weight and traffic of the door, which determines the closer grade and sizing required
  • Whether other problems, such as worn hinges, a sagging door or a misaligned strike, must be fixed first
  • Fire-rated or accessibility-regulated doors, which limit which hardware and settings may be used
  • The number of doors being serviced in one visit, common for retail rows and campus buildings
  • Time of day, since we are available 24/7 and after-hours calls are handled differently than scheduled work

Why Claremont chooses us

  • Fully mobile, so the work happens at your door in Claremont with no need to take the door off site
  • Adjust-first approach: we will not recommend replacement when a tune-up solves it
  • We look at hinges, latches and frames, not just the closer, so the fix actually lasts
  • Experience since 1987 across commercial doors of many ages and hardware types
  • Awareness of access-control and master-key setups, important around institutional buildings
  • Straightforward explanations of what failed and why, without pressure

Door Closer Repair across Claremont

Claremont's commercial doors range widely. Around Claremont Village and Yale Ave, small shops, restaurants and offices often sit in older buildings where frames have settled over decades. A closer that was fine years ago can now fight a door that has dropped slightly, and a clean adjustment of the door and closer together makes more difference than a new unit alone. ZIP code 91711 covers the Village and much of the city, and we serve it around the clock.

The Claremont Colleges, including Pomona, Harvey Mudd, Scripps, Claremont McKenna and Pitzer, plus the graduate institutions, have many doors in dorms, labs and academic buildings. Those doors cycle constantly and often work with access-control hardware, so a closer that is too slow or too fast can cause latch and reader problems. We take that into account when adjusting or replacing.

Further out, North Claremont and the Claraboya hillside bring offices and mixed-use properties with their own exposure to wind and sun, which can change how a door closes. Whether you are near Foothill Blvd, Indian Hill Blvd, Base Line Rd or the I-10 and SR-210 corridors, we come to you and test the door in its real conditions.

Locked out or need a locksmith now?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

Other Claremont locksmith services

See all of our Claremont services, or our citywide door closer repair page.

Door Closer Repair in Claremont — FAQs

Can you repair a door closer in Claremont at night?
Yes. We are available 24/7 and fully mobile, so call (323) 997-8867 any time, including for a door that will not latch and leaves a building unsecured.
How do I know if I need a new closer or just an adjustment?
If the closer is not leaking oil, is not cracked and still responds to its adjustment valves, it often only needs tuning. We check this on site and tell you which applies.
Why does my door slam shut?
Usually the sweep or latch speed valve is set too fast or has drifted, or the arm is loose. Sometimes a worn hinge or wind pressure contributes. We inspect all of these.
My door will not latch unless I push it. What is wrong?
The latch speed may be too slow, the strike may be misaligned, or the door may have sagged. We correct the cause rather than just speeding up the closer.
Do you work on doors in Claremont Colleges buildings?
We handle closers on commercial and institutional-style doors, including those tied to access-control hardware. For campus work, contact the building's facilities contact first, then call (323) 997-8867 to discuss the door.
Can a closer be installed on a fire-rated door?
Fire-rated doors have requirements about hardware and how they close and latch. We keep those in mind and will tell you if a requested change is not appropriate.
What affects the cost of door closer repair?
Mainly whether it needs adjustment or replacement, the door's size and traffic, any hinge or frame repairs, and how many doors we service. Call (323) 997-8867 to describe your situation.
Do you have a shop I can visit in Claremont?
No. We are fully mobile and come to your location, so there is no storefront to visit.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7