Commercial Sensor Calibration in Los Angeles

Accurate sensors are the foundation of every high-performing commercial HVAC system. If temperature, humidity, CO2, pressure, or airflow readings drift, your BAS/DDC reacts incorrectly—overheating, overcooling, wasting outside air, or missing ventilation targets. #1 AC Guys brings 80+ years of engineering discipline to commercial sensor calibration across Los Angeles, optimizing comfort, indoor air quality, and energy use with evidence-based adjustments and clear documentation.

What we calibrate

• Temperature sensors: space, return, supply, mixed air, water (CHW/HW)
• Humidity and dew point sensors for zones and supply air
• CO2 sensors for demand-controlled ventilation and IAQ monitoring
• Pressure sensors: duct static, differential pressure across filters/coils, hydronic differential
• Airflow measurement stations and VAV box airflow sensors
• Economizer sensors: outdoor air, mixed air, enthalpy
• Plant and equipment sensors: chiller/boiler temperatures, condenser water, RTUs, AHUs

We verify wiring, placement, shielding, and sensor selection, then calibrate or replace as needed to meet tolerances defined by your sequence of operations and best practices.

Our calibration process

• Discovery and planning: review drawings, sequences, trends, and alarm history to prioritize critical points and zones.
• Baseline testing: compare live readings to professional reference instruments; identify offsets, drift, and noise.
• Calibration and correction: apply point-by-point adjustments, re-range devices, and update controller parameters as needed.
• Functional verification: validate control responses (e.g., VAV airflow tracking, economizer changeover) against the sequence.
• Reporting: deliver before/after data, tolerances, exceptions, and recommendations for replacement or relocation.
• Ongoing strategy: propose calibration intervals and monitoring to keep sensors within spec throughout the year.

Because large and complex facilities demand precision, we coordinate with your facilities team to schedule work during low-impact windows and provide phased execution for campuses and high-occupancy buildings.

Why #1 AC Guys

• Fourth-generation engineering family with 80+ years in engineering—built for complex projects and critical environments.
• Factory-trained on Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China) equipment.
• Specialists in both commercial and residential systems, with a focus on large commercial portfolios.
• Mission-driven: healthier indoor air leads to healthier, more productive people.
• Data-first approach: traceable reference instruments, documented methods, and actionable reporting.

Our team understands how small sensor errors cascade into poor control—mis-set economizers, unstable VAV boxes, or false alarms that erode trust. We solve the root causes and verify results with trend analysis.

Benefits you can measure

• Comfort and IAQ: maintain stable temperatures and ventilation aligned with ASHRAE recommendations.
• Energy savings: reduce excessive OA intake, reheats, and runtime driven by bad data.
• Compliance support: help align with California Title 24 control requirements and commissioning best practices.
• Fewer alarms and truck rolls: better data means fewer nuisance calls and faster diagnostics.
• Longer equipment life: right sequencing reduces short cycling and thermal stress.

Whether you manage offices in Downtown LA, a manufacturing site in the Valley, a healthcare facility in Pasadena, or a retail portfolio across LA, Orange, Ventura, and Western Riverside counties, we tailor calibration scopes to your occupancy, ventilation strategy, and energy goals.

Industries we serve

• Office, retail, hospitality, and mixed-use
• Healthcare clinics and labs (non-licensed areas)
• Industrial and light manufacturing
• Education and public facilities
• Multifamily common areas and amenities

We work seamlessly with your building automation team and controls vendor to ensure changes are captured in the BAS database, graphics, and trends. If a sensor is beyond calibration or poorly located, we provide upgrade and relocation options with clear ROI.

Recommended intervals

Typical commercial programs calibrate temperature and pressure sensors annually, with semiannual checks for humidity and CO2 in high-importance zones. We’ll design a schedule based on equipment type, criticality, and environmental load to keep your control loops stable year-round.

Deliverables you’ll receive

• Calibration plan listing devices, locations, and target tolerances
• Before/after readings with variance and pass/fail status
• Notes on placement, wiring, shielding, and environmental influences
• Recommendations for replacements, relocation, or control sequence adjustments
• Post-calibration verification steps and trend points to monitor

As a family business rooted in Southern California, #1 AC Guys is committed to reliable service, transparent communication, and durable results. From single buildings to multi-site portfolios, our team scales quickly and executes with minimal disruption.

Service area and scheduling

We serve Los Angeles County and nearby regions, including Orange County, Ventura County, and Western Riverside County. Ask about after-hours or phased work to keep occupants comfortable and operations uninterrupted.

Ready to restore true readings and smarter control? Contact #1 AC Guys for commercial sensor calibration in Los Angeles and get a proposal with scope, timeline, and pricing tailored to your site.

Healthy air for a healthy life starts with accurate data—let our engineering family put your building back on solid ground.