Commercial openers

Commercial Garage Door Operators

A commercial garage door opener is built for bigger, heavier doors and more cycles than a home unit. G Brothers has done 57 commercial operator jobs since 2018, covering trolley, wall-mount (jackshaft) and chain hoist operators, installed and repaired for businesses and properties across the Denver metro.

What this service covers

Real work by background-checked local technicians, quoted at a flat rate you approve before anything begins.

  • Commercial operator installation

    34 of the 57 jobs were installs or replacements. 15 named LiftMaster.

  • Commercial operator repair and service

    32 of the 57 were service or repair, including arms, brackets and trolleys.

  • Type by type

    Wall-mount or jackshaft (8 jobs), trolley (7 jobs) and chain hoist (2 jobs) where the type is named.

  • With a new door

    12 of the 57 went in together with a new commercial door.

From our job records

Counted from our own completed records that name a commercial opener or operator.

Commercial operator jobs since 2018
57
Busiest months
Mar to Apr
  • Feb 2023: LiftMaster commercial trolley operators with 12-foot and 14-foot rails, each with photo-eyes and a three-button station, one remote per door.
  • Sep 2022: a commercial opener with a bent lift arm needed a new arm.
  • Jul 2025: a commercial trolley opener was replaced during a spring replacement visit.

What the commercial operator jobs were

  • Installed or replaced34 of 57 jobs
  • Service or repair32 of 57 jobs
  • LiftMaster15 of 57 jobs
  • Installed with a new door12 of 57 jobs
  • Wall-mount or jackshaft8 of 57 jobs
  • Trolley7 of 57 jobs
  • Chain hoist2 of 57 jobs

Where we do this

Which commercial operator fits

  • Trolley operators suit standard sectional doors, including doors that need a 12- or 14-foot rail.

  • Wall-mount (jackshaft) operators suit high-lift or limited-headroom doors and keep the ceiling clear.

  • Chain hoists are a manual backup or a manual-only choice on larger doors.

  • Commercial trolley operators in our records came with photo-eyes and a three-button station.

How it works

  1. 1

    Call or book online

    Tell us the door size, how often it cycles, and what the building is used for.

  2. 2

    On-site check and flat quote

    The technician checks the door, springs and headroom and recommends an operator type, with a flat price to approve.

  3. 3

    Done and tested

    We install or repair the operator, set limits, force and safety devices, and test the door through a full cycle.

Why facility managers call G Brothers

Fast response, day or night

Our average response is about an hour and a half, and that holds for a commercial call at 2am.

Parts on the truck

Common springs, cables, rollers and operator parts are stocked on the truck, so many repairs are finished on the first visit.

Every operator, every brand

Jackshaft, trolley, hoist and gate operators on any make, so we repair the equipment you already have.

Insured, with paperwork fast

Licensed, insured, background-checked technicians, with a certificate of insurance usually sent within 24 hours.

One account for every property

Property managers can put every door on every building on one account.

Warranty on the work

One year on labor and three years on parts.

More than 40 years in the trade

Family-owned, BBB accredited, and rated 4.9 stars across 400+ Google reviews.

Reviews

Rated 4.9 across 400+ Google reviews

Property managers, contractors and homeowners trust G Brothers for fast, honest garage door work.

4.9

Based on 400+ Google reviews

We had a great experience with this garage door company! They responded quickly and came out right away to fix our garage door. The service was fast, professional, and very affordable. Everything is working perfectly now, and we really appreciate how easy they made the whole process. We would definitely use them again in the future and highly recommend them to anyone needing garage door repairs!

Sara F.

Google review • Jun 2026

After putting off a broken garage spring for over a year, I finally called G Brothers Garage Doors. I only wish I had done it sooner. I found them on social media and got an immediate response. Scheduling was easy, and Boddrick showed up exactly when he said he would at 8:45 AM. He took one look at the issue and confidently said he could fix it and had the springs in the truck. He replaced both springs quickly for the exact quoted price with no surprises. While testing the door, he noticed noise in the rails and took the time to tune everything up as well. Professional, knowledgeable, efficient, and honest. The kind of service that is hard to find these days. If you need garage door work done right the first time, call G Brothers. No question. Highly Recommend!

David B.

Google review • Apr 2026

G Brothers came to check out our garage door issue within a half an hour of calling them. They turned around a quote within that same day and I was able to schedule my garage door opener replacement within 48 hours. This was much faster than I expected (my issue wasn’t an emergency). The garage door works much better now than I knew it could (older garage door). I highly recommend working with G Brothers! And will certainly be going back to them with any future garage door needs.

Kate H.

Google review • Apr 2026

I highly recommend this company. They did a great job! I needed a new 2-door and single door garage door and they came the very next day, did a great job, and were the best experience. I've had at least 3 companies come out and do work on my garage doors over the past 10 years and wouldn't use any of them again. I will be using G Brothers again and again, they did great work at the price they quoted. They were on time, did the work quickly, and it looks and works great!

Jay D.

Google review • Oct 2025

So grateful for these guys, they helped me out so quickly and at a great price! When my old door jammed up and got crunched they were the only ones who could within a day fix it and they work so fast it only took them an hour and a half to install a completely new door and springs, great work ethic and super nice guys! Other companies told me it would be weeks till they could get a new door and wanted to charge me thousands more, I would highly recommend these guys to anyone!

Everett M.

Google review • Sep 2024

Upfront, flat-rate pricing

Your estimate is free. We diagnose the problem on site, then give you one flat price to approve before any work begins. No surprises, no pressure, and an honest recommendation on whether a repair or a replacement is the better value. Free estimates cover garage door repair, spring, opener, and replacement work. Remote and keypad programming is quoted when you book.

A G Brothers technician servicing a residential garage door

Visit us

Find G Brothers Garage Doors

Reach out for same-day garage door service. Our technicians come to you for every repair, replacement, and install.

Our shop

7700 W 9th Ave, Lakewood, CO 80214

Open 24/7 for emergency garage door service.

FAQ

Common questions

Quick answers about commercial door operators and related work from the G Brothers team.

Do you install commercial openers on new doors?

Yes. 12 of the 57 commercial operator jobs in our records went in together with a new door.

Is a commercial opener different from a home opener?

Yes. It is built for larger doors and more cycles. See the commercial versus residential opener guide.

Why won't my commercial garage door close?

Usually the photo eyes or reversing edge are blocked or faulted, so the operator closes only while someone holds CLOSE. Check interlocks and limits too.

Read full answer
How do I open a commercial roll up door manually?

Cut the power, then use the chain hoist or floor disconnect, or lift a door with no motor by its bottom bar. Stop if it feels far heavier than normal.

Read full answer
What is the difference between a commercial and a residential garage door opener?

Commercial openers are built for heavy doors, high daily cycle counts, and continuous operation under multiple users.

Read full answer
Why is my garage door opener motor overheating and shutting off?

The motor has a thermal overload protector that cuts power when it gets too hot, usually after repeated cycles without a cool-down break, or because it is straining against a heavy or unbalanced door.

Read full answer
What are the requirements for installing a jackshaft garage door opener?

A jackshaft opener requires a torsion spring system (not extension springs), at least 8 inches of clear wall space on one side of the door, 4 inches of clearance above the torsion bar, and a 1-inch diameter torsion bar.

Read full answer
What are the safety requirements for a commercial garage door?

A commercial garage door needs a UL 325 listed operator with a monitored photo eye or sensing edge, must meet the building and fire codes your city adopts, needs a yearly NFPA 80 test if it is fire rated, and falls under OSHA's duty to keep the workplace free of known hazards.

Read full answer

Service areas

Commercial Door Operators across the Denver metro

G Brothers services commercial door operators for warehouses, retail, storage and multi-unit properties across the Denver metro. Find your city below.

Ready to get started?

Book same-day service or a free estimate. Available 24/7.