Garage Door Supply & Repair in Ontario, CA
Keystone Garage Door Supply & Repair · 601 S Dupont Ave, Ontario, CA 91761
Commercial-grade garage door parts, replacement panels, torsion springs, openers, and same-day repair service across Ontario and the Inland Empire.
Request a Fast Call Back
Leave your number and door issue. Our Ontario dispatch team calls back promptly during 7 AM – 10 PM hours.
Finding Our Ontario, CA Location
Our supply and dispatch hub is located at 601 S Dupont Ave, Ontario, CA 91761 inside the California Commerce Center corridor, minutes from I-10, I-15, and CA-60 for rapid dispatch across San Bernardino and Riverside counties.
Keystone Garage Door Supply & Repair
Verified Business Details & Operating Hours
- Street Address 601 S Dupont Ave, Ontario, CA 91761
- Phone / Dispatch
- Email Address info@keystonegaragedoorrepairs.com
- Business Hours Monday – Sunday: 7:00 AM – 10:00 PM
Garage Door Supply & Repair Services in Ontario
Whether you are a homeowner with a stuck door or a local contractor sourcing heavy-duty hardware, we stock and service all major residential and commercial overhead door systems.
Garage Door Repair
Full mechanical diagnostics, off-track door resets, roller replacements, hinge hardware, and structural balance checks.
Garage Door Spring Repair
Precision torsion and extension spring replacement calibrated to exact door weight for safe, smooth lifting.
Garage Door Parts Supply
Direct supply of torsion springs, drums, cables, nylon rollers, weather seals, tracks, and replacement sections in 91761.
Opener Repair & Installation
Belt-drive, chain-drive, and wall-mount jackshaft openers, smart Wi-Fi controls, keypads, and safety photo-eye alignment.
Cable & Track Replacement
Frayed lift cable replacement, bent vertical/horizontal track realignment, and heavy-duty bottom bracket reinforcement.
New Door & Panel Installation
Insulated steel, modern glass, carriage-house, and commercial roll-up doors supplied and installed to code.
Why Ontario Properties Trust Keystone
From residential neighborhoods near Euclid Avenue and Ontario Ranch to industrial loading bays along Dupont Ave and Wanamaker Ave, local doors face intense summer heat and daily heavy cycling.
Inland Empire Heat & Spring Fatigue
High summer temperatures in Ontario and San Bernardino County dry out lubricants and accelerate metal fatigue in torsion springs and opener gears. We supply high-cycle oil-tempered springs and heat-resistant nylon rollers built for Southern California conditions.
Combined Supply Counter & Mobile Service
Because we operate both as a garage door supplier and a repair team out of 601 S Dupont Ave, our service trucks carry exact-match springs, cables, and hardware—eliminating multi-day part delays for urgent repairs.
Where We Supply & Service Around Ontario, CA
Dispatched from 601 S Dupont Ave (91761), we cover all Ontario ZIP codes (91761, 91762, 91764) and surrounding Inland Empire communities.
Ontario Garage Door Supply & Repair FAQ
What are your operating hours in Ontario, CA?
We are open 7 days a week from 7:00 AM to 10:00 PM for both parts supply inquiries and residential or commercial garage door repairs.
Do you supply garage door parts to homeowners and contractors?
Yes. From our 601 S Dupont Ave location in Ontario (91761), we supply torsion springs, extension springs, rollers, cables, hinges, weather stripping, openers, and replacement door sections.
How quickly do you respond to a callback request?
During our 7:00 AM – 10:00 PM operating hours, our Ontario dispatch team typically calls back within 10 to 15 minutes to confirm your door symptom, parts availability, or technician arrival window.
Which cities outside Ontario do you cover?
Alongside Ontario (91761, 91762, 91764), we serve Rancho Cucamonga, Fontana, Eastvale, Chino, Upland, Montclair, and Jurupa Valley.
Request a Call Back or Free Estimate
Tell us the door position, what happened, and your street or ZIP code. Clear upfront pricing is explained before any repair work begins.
Keystone Garage Door Supply & Repair
- Address 601 S Dupont Ave, Ontario, CA 91761
- Phone
- Email info@keystonegaragedoorrepairs.com
- Hours 7:00 AM – 10:00 PM (Mon – Sun)