Commercial Sensor Calibration in Rialto, CA

What we calibrate

Accurate sensors are the foundation of efficient, healthy buildings. We calibrate and verify the devices that matter most to your HVAC performance and indoor air quality.

• Temperature sensors: RTDs, thermistors (10k Type II/III), immersion and duct probes
• Humidity sensors and transmitters
• CO2 and VOC sensors for IAQ ventilation control
• Static and differential pressure sensors for ducts, filters, and VAVs
• Airflow stations and anemometer-based readings
• Refrigerant and water pressure sensors for chillers, boilers, and heat pumps
• Enthalpy and economizer sensors
• 0–10V and 4–20 mA transmitters; BACnet/Modbus networked sensors

Our calibration process

We follow a rigorous, NIST-traceable process designed for commercial facilities in Rialto and the Inland Empire.

• Discovery: Review site goals, issues, and control sequences; map sensors to equipment and BAS points.
• Baseline: Compare live readings to independent reference instruments and site conditions.
• Reference standards: Use calibrated meters, manometers, and gas/temperature/humidity references traceable to NIST.
• Multi-point mapping: Test across operating ranges; document tolerances and offsets.
• Adjust & correct: Apply on-device adjustments or controller/BAS offsets where appropriate.
• Controls validation: Confirm sequences react correctly (e.g., economizer, VAV tracking, staged capacity).
• Documentation: Provide certificates with pre/post data, methods, serials, and traceability.
• Labeling: Tag each device with date, technician, next-due window.
• Turnover: Review results with your team; recommend repairs or sensor replacements if needed.

Systems and brands we service

From single-tenant retail to multi-building campuses, our engineers calibrate sensors across RTUs, split systems, VRF/mini-split, VAV boxes, DOAS/make-up air, chillers, boilers, and heat recovery systems. We are factory-trained by Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). We also verify BAS/BMS points and sequences over BACnet and Modbus to ensure the data your operators see reflects reality.

Industries we support

• Office and multi-tenant commercial
• Healthcare clinics and medical offices
• Education and municipal facilities
• Retail, restaurants, and hospitality
• Warehouses, logistics, and light manufacturing

If your facility relies on precise ventilation, comfort, and energy control, calibrated sensors are non-negotiable.

Compliance and quality

Our calibration approach supports ASHRAE 55 and 62.1, California Title 24, and CalGreen objectives. Reports include instrument serials, uncertainty, methods, and pre/post values to satisfy audits and commissioning closeout. Need LEED documentation support? We can align our deliverables to your project’s requirements.

Why #1 AC Guys

• 4th-generation family of engineers; 80+ years of engineering experience
• Specialists in complex commercial projects and controls troubleshooting
• NIST-traceable references and multi-point verification
• Factory training: Fujitsu, Mitsubishi Electric, Midea, Gree, Haier
• Clear reports, labels, and practical recommendations
• Fast scheduling, same-day and after-hours options

Results you can measure

Properly calibrated sensors reduce hot/cold complaints, cut short cycling, avoid over-ventilation, and stabilize humidity—all while lowering energy spend. You’ll see fewer nuisance alarms, better filter maintenance timing via accurate pressure readings, and verified BAS trends your team can trust.

Service area and response

We serve Rialto and nearby Inland Empire communities from our Greater Los Angeles base, as well as Los Angeles County, Orange County, Ventura County, and Western Riverside County. Need quick help after hours? We offer flexible windows to keep operations running.

Maintenance plans

Choose quarterly, semiannual, or annual calibration aligned to your facility’s risk profile and seasonal loads. Plans bundle reports, trend checks, and replacement recommendations for aging sensors.

FAQs

How long does a typical calibration take?
Most small sites finish in a few hours; multi-floor or campus sites can span a day or more depending on point counts.

Do you provide certificates?
Yes—each device includes pre/post data, methods, instrument traceability, and next-due date.

Will you coordinate with our BAS vendor?
Absolutely. We collaborate on point mapping, offsets, and trending to ensure end-to-end accuracy.

Get a precise quote

Tell us your building type, equipment, and approximate sensor count. We’ll provide a clear scope, timeline, and pricing—then deliver calibration that puts trustworthy data back in charge of comfort, health, and energy performance in your Rialto facility.