Preventive Maintenance Services
Rialto, CA
Former Army depot, now one of the best warehouse markets in the IE. Old buildings need more PM, not less. Direct Source provides scheduled PM visits for warehousing and distribution facilities in Rialto — written reports every visit, a technician who knows your equipment, and direct contact between visits. Not a call center.
Request a PM Quote
Same-day response. Tell us what equipment you're running in Rialto — we'll get back to you today.

Trusted by industry leaders
Direct Source serves Southern California’s top manufacturers







What We Do
PM Services We Provide in Rialto
Every visit is documented. Every finding is reported. Here's what's included depending on your equipment scope.
Electrical PM
Panel inspections, thermal imaging, connection checks, breaker testing. We catch electrical issues before they become fires or failures.
Available for all Rialto facility types. NFPA 70E compliant procedures on every visit.
PLC & Controls PM
Controller backups, battery replacement, I/O testing, firmware checks, and signal verification.
We service Allen-Bradley, Siemens, Omron, Mitsubishi, and other major platforms. Full documentation of all changes.
Mechanical PM
Lubrication, alignment, belt and chain inspection, vibration analysis, coupling checks.
We keep rotating equipment running smooth and catch wear patterns before they cause failures in Rialto facilities.
HVAC & Cooling PM
Coil cleaning, refrigerant checks, belt and motor inspection, filter changes.
Inland heat puts extra stress on cooling systems. We maintain them before they fail.
Compressed Air PM
Compressor service, dryer maintenance, leak surveys, filter and belt changes.
Compressed air leaks cost more than most facility managers realize. We find them and fix them.
OEE & Condition Monitoring
Sensor installation, data logging, baseline trending, and condition-based monitoring setup.
We wire and install OEE monitoring systems for Rialto facilities wanting to track machine uptime, performance, and quality.
Why Direct Source
PM That Fits Around Your Operation
Written Reports Every Visit
You get a timestamped report every time: what was checked, what was found, what needs attention. Your maintenance records stay current.
Scheduled Around Your Production
PM visits happen on your calendar. Early morning, evenings, weekends, between shifts — we build the schedule around your operation, not ours.
Same Technician, Every Visit
The tech who services your Rialto facility knows your equipment. Not a rotating crew — a consistent person who notices when something changes.
Direct Contact, Not a Call Center
Between visits you reach your technician directly. A real person who knows your facility — not a dispatcher reading from a script.

Direct Source at a Glance
How It Works
From First Call to Full PM Program
No long sales process, no complicated onboarding. You tell us what you're running in Rialto and we build the program from there.
Call or Submit
Tell us what equipment you run and where in Rialto. We respond same day.
Site Walkthrough
We walk your Rialto facility, document equipment, note condition, and identify PM priorities.
PM Schedule & Scope
You get a custom PM calendar — visit frequency, equipment covered, and scope — built around your production schedule.
Ongoing Service
Regular visits, written reports after every one, and a direct line to your technician. That's the program.
Who We Serve
Industries We Serve in Rialto, CA
Rialto's industrial operations run warehousing, distribution, and more. Different equipment, different demands, different PM requirements. We build the program around what you actually run.
Warehousing
Warehousing operations in Rialto depend on conveyor systems, dock levelers, and electrical infrastructure that needs consistent attention. We build PM programs around your operational windows.
Distribution
Distribution and logistics facilities in Rialto operate conveyor systems, dock equipment, and automated sorting around the clock. We maintain this equipment with minimal disruption to your operation.
Food processing
Food processing facilities in Rialto run continuous shifts with hygiene-critical equipment. We maintain conveyor lines, refrigeration compressors, pump systems, and processing equipment with the protocols food facilities require.
Manufacturing
Rialto's manufacturing operations depend on reliable equipment. We provide scheduled PM, written reports, and direct technician contact for facilities in this sector.
HVAC & Cooling Systems
Rialto facilities of all types depend on HVAC and cooling equipment. We provide coil cleaning, refrigerant checks, motor inspection, and belt service on your schedule.
Compressed Air Systems
Compressed air leaks and compressor failures cost more than most facilities realize. We audit, maintain, and document your compressed air system as part of any PM program.
What Clients Say
Trusted by Rialto & San Bernardino County Facilities
“We were experiencing electrical and PLC problems at our manufacturing plant and needed help ASAP. Direct Source came in the same day, gave us a very fair estimate, found the problem, and fixed it. We got back up and running with little downtime. These guys know what they're doing.”
“We had an unexpected production issue at our facility and Direct Source responded quickly. Their team diagnosed the problem fast and got us back up and running the same day. Professional and dependable.”
“They were professional and prompt, diagnosed the issue quickly, and fixed it at no charge since it was an easy fix. That type of customer service goes a long way in showing how they operate. They will be our FIRST call for the next electrical need.”
Serving Rialto, CA
Preventive Maintenance Services in Rialto, CA
Rialto's industrial facilities run warehousing and distribution operations across Rialto Airport Business Park, Ayala Dr Industrial Zone — equipment that runs hard and can't afford unplanned downtime. These facilities need PM that fits around production schedules, not the other way around.
Direct Source serves Rialto as part of our core San Bernardino County coverage. Our technicians handle electrical PM, PLC and controls maintenance, mechanical inspection, HVAC service, and compressed air systems. We also service nearby San Bernardino, Fontana, Colton. Zip codes served: 92376.
Get Started
Request a PM Quote for Your Rialto Facility
- Same-day response to your quote request
- Electrical, mechanical & controls PM in one program
- Written reports after every visit
- 24/7 emergency priority for PM contract clients
Tell Us About Your Facility
Submit below and our team will reach out today.
FAQ
Frequently Asked Questions — PM in Rialto
How quickly can you respond to Rialto facilities?
Our shop is in Santa Fe Springs — San Bernardino County is part of our core territory. For PM contract clients, we respond same day or next day for emergency issues. Scheduled visits are set up in advance on your production calendar.
What types of equipment do you maintain in Rialto?
In Rialto, we commonly maintain: conveyor systems, refrigeration, compressors, electrical panels, dock equipment, HVAC. If you have equipment outside that scope, tell us what you're running and we'll let you know upfront if it fits our program.
How often do you recommend PM visits for warehousing operations?
It depends on equipment age, criticality, and run hours. For most warehousing facilities, we start with quarterly visits and adjust based on what we find. High-cycle equipment often warrants monthly checks. We'll make a specific recommendation after a site walkthrough.
Do we need to stop production for a PM visit?
Rarely. We schedule around your shifts and work on equipment during natural downtime windows. When we need a brief shutdown for specific tasks, we coordinate that in advance — no surprises.
What's included in a PM visit report?
Every visit produces a written report: what was inspected, what was found, measurements logged, parts replaced, and anything flagged for follow-up with our recommendation. The report is yours to keep — it becomes your maintenance history.
Do you handle emergency calls between PM visits?
Yes. PM contract clients get priority scheduling for emergency calls. We cover Rialto and all of San Bernardino County and can typically respond same day or next day.
Stop Reacting. Start Preventing.
A PM program costs a fraction of an emergency repair. Let's build one for your Rialto facility.