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Crenshaw Lock

Door Closer Repair in Covina · 24/7 mobile

Door Closer Repair in Covina, California

Crenshaw Lock Company provides mobile door closer repair, adjustment and replacement for commercial doors in Covina, California. We are available 24/7 and come to your business with the tools and parts to work on site. Call (323) 997-8867 to describe the problem with your door.

  • Mobile to your Covina 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 the door slams, hangs open, drifts shut too slowly, or never latches, and the problem shows up as a security gap, a safety concern or an annoyed customer. In Covina, where small retail, offices, restaurants and apartment common areas often share older buildings, a worn closer is one of the most common reasons a commercial door stops working the way it should.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We repair, adjust and replace hydraulic door closers on commercial doors. Many closer complaints are not a dead closer at all. They are a closer that has lost its speed or latch settings, a loose mounting bracket, a bent arm, or a door that has dropped on its hinges. We look at the whole door, not just the part you pointed to.

We are fully mobile. There is no storefront to visit, so we come to you, whether that is a shop on Citrus Avenue, an office off Azusa Avenue, or a building near the Covina Metrolink station. If a door will not close and lock properly after hours, call us any time of day or night and we will work out the next step with you.

How it works in Covina

  1. 1

    Describe what the door is doing

    When you call (323) 997-8867, tell us how the door behaves. Does it slam, creep shut, stop short of the latch, or hang open? Is oil leaking from the closer body? Those details help us bring the right parts and tell you whether an adjustment or a replacement is more likely.

  2. 2

    Inspect the door, frame and hardware

    On site we check the closer, its mounting plates, the arm and the hinges. A sagging door, a worn hinge or a misaligned strike can mimic a failing closer. Finding the real cause first avoids installing a new closer on a door that will keep fighting it.

  3. 3

    Adjust the closer where possible

    Hydraulic closers have valves that control sweep speed, latch speed and sometimes backcheck. If the unit is sound, we tune those settings, tighten loose fasteners and correct arm geometry so the door closes smoothly and latches firmly every time.

  4. 4

    Replace the closer when it is failing

    If the closer is leaking fluid, has a cracked body or will not hold an adjustment, we replace it. We match the size and mounting style to the door, its width and its traffic, and fit it so the door swings and closes the way the building needs.

  5. 5

    Test the door and secure the opening

    After the work we cycle the door repeatedly, confirm it closes fully and latches, and check that it opens without excessive force. We also confirm the lock and strike line up, so the door actually secures the business when you leave.

Need door closer repair in Covina?

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

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What affects the price

  • Whether the closer needs only an adjustment or a full replacement, since replacement adds the cost of the unit itself.
  • The size, grade and mounting style of the closer the door requires, such as a heavy-duty unit for a high-traffic entry versus a lighter interior door.
  • Door and frame condition, including whether hinges, brackets or the strike need repair for the closer to work properly.
  • Door type and material, such as aluminum storefront, wood or hollow metal, which affects mounting and any drilling or plate work.
  • Time of day and urgency, since after-hours calls and same-day needs are handled differently from scheduled work.
  • The number of doors involved, as a property with several worn closers may be handled in one visit.

Why Covina chooses us

  • Fully mobile service, so repairs happen at your door with no need to remove or transport anything.
  • Operating in the Los Angeles area since 1987, with a lead technician who has seen how closers fail on older and newer buildings alike.
  • We diagnose the whole door, including hinges, latch and strike, instead of swapping parts until something works.
  • Available 24/7, which matters when a door that will not latch leaves a business unsecured overnight.
  • Straight advice on adjustment versus replacement, so you do not pay for a new closer when a tune-up will do.
  • One call can cover closers, locks, rekeying and other commercial hardware on the same visit.

Door Closer Repair across Covina

Covina has a character most nearby cities lack. Historic Downtown Covina, centered on Citrus Avenue, is a walkable stretch of 1920s and 1930s commercial buildings with small retail, restaurants and offices. Doors in older storefronts are often original or have been modified over the years, and they can sag or shift, which puts extra strain on a closer. Businesses near the Covina Center for the Performing Arts and Heritage Plaza see steady foot traffic, so a door that slams or fails to latch quickly becomes noticeable.

We work throughout the city, including ZIP codes 91722, 91723 and 91724. In Charter Oak, in 91724, commercial doors along the main corridors serve neighborhood shops and service businesses, while apartment buildings and offices across the rest of Covina rely on closers for fire-rated and common-area doors. Covina Hills to the south has its own mix of offices and community buildings that need the same attention.

Because we are mobile, getting to you depends on where we are when you call, not on a shop location. Whether your building sits near Interstate 10, along Azusa Avenue, Grand Avenue, Badillo Street, San Bernardino Road or Arrow Highway, or close to the Covina Metrolink station, call (323) 997-8867 and we will talk through the problem.

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Other Covina locksmith services

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

Door Closer Repair in Covina — FAQs

Can you repair a door closer on a Covina storefront at night?
Yes. We are available 24/7 and fully mobile. If a door will not close or latch and your business is left open, call (323) 997-8867 and we will talk through what is happening and how to get the door secured.
Should I repair or replace my door closer?
It depends on its condition. If the closer is sound but out of adjustment, tuning the speed and latch valves often fixes it. If it is leaking oil, cracked or will not hold a setting, replacement is the better choice. We check on site and tell you which applies.
Why does my door slam shut?
Usually the sweep or latch speed is set too fast, or the closer is too strong for the door. A worn or leaking closer can also act unpredictably. Slamming wears out the door, frame and latch, so it is worth correcting.
Why won't my door latch all the way?
Common causes include a latch speed that is too slow, a sagging door, worn hinges or a strike that no longer lines up. We check all of these, not just the closer, so the door closes and locks reliably. Call (323) 997-8867 if you want us to take a look.
My closer is leaking oil. Can it be fixed?
A hydraulic closer that leaks fluid has typically lost its seals and will keep losing performance. In most cases replacement is the sensible fix. We can fit a closer sized for your door and traffic.
Do older downtown Covina buildings cause special closer problems?
They can. Older doors may be heavy, slightly out of square or hung on worn hinges, which makes a closer work harder. We look at the door itself and set up the closer to suit what is actually there.
Do you work on closers for apartment and office common doors?
Yes. We repair, adjust and replace closers on commercial doors, including offices, retail entries and common-area doors. Call (323) 997-8867 to discuss your building.
Do I need to visit a shop?
No. Crenshaw Lock Company is mobile only, with no storefront. We come to your door in Covina and do the work on site.
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