Commercial BAS (Building Automation System) Maintenance in Fontana

For commercial facilities in Fontana, a well‑maintained BAS is the difference between stable comfort and costly downtime. #1 AC Guys delivers rigorous, engineering‑driven Building Automation System maintenance that optimizes HVAC performance, safeguards indoor air quality, and reduces energy waste—while giving your operations team clear visibility into what matters.

What our Commercial BAS maintenance includes

• Network and controller health check: BACnet scan, device status, MS/TP token statistics, IP reachability and latency review.
• Sequence and schedule validation: verify start/stop logic, setpoints, setbacks, holidays, and occupancy modes align with your real operations.
• Sensor calibration: temperature, humidity, CO₂, and pressure checks to ensure accurate control decisions.
• Ventilation and IAQ optimization: outside air measurement, economizer testing, demand‑controlled ventilation review, and filtration checks to support healthier buildings.
• Equipment control verification: VFDs, fans, dampers, valves, and safety interlocks tested under load and at edge conditions.
• Alarm rationalization: reduce nuisance alarms, set meaningful thresholds, and add escalation to protect uptime.
• Firmware, backups, and documentation (where applicable): maintain controller images, export databases, and keep your as‑builts current.
• Graphics and naming hygiene: clean navigation, consistent point naming, and useful dashboards for faster troubleshooting.
• Trend log strategy: configure critical trends, review KPIs, and convert findings into actionable tasks.
• Mechanical coordination: integrate BAS work with coil cleaning, filter replacement, damper inspection, and economizer repairs.
• Compliance‑minded checks: align sequences with California best practices and Title 24 intents where applicable.
• Clear closeout reporting: risk register, priority list, and capital planning notes for stakeholders.

Platforms, protocols, and parts we support

We maintain open and multi‑vendor BAS environments across BACnet/IP, BACnet MS/TP, Modbus TCP/RTU, and LonWorks, including supervisory platforms such as Niagara‑based frameworks and site controllers. We also service HVAC systems that use components and controls sourced through AC PRO, helping you standardize parts, streamline procurement, and keep critical spares on hand. Whether your site combines rooftop units, DOAS, VRF, boilers, or ERVs, we coordinate controls so the whole system works as one.

Why #1 AC Guys for complex commercial sites

We are a fourth‑generation family of engineers with 80+ years in engineering. Our team has been factory‑trained by Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That depth shows up on large and challenging projects where precision matters—multi‑building campuses, logistics centers, healthcare clinics, and mixed‑use properties. Our mission is simple: healthier air at work for healthier lives. Every maintenance plan is designed to improve IAQ, comfort stability, and energy performance, backed by transparent data so you can see the results.

Service plans and process

• Discovery and data pull: export histories, review graphics and naming, gather site goals and constraints.
• On‑site maintenance and tuning: execute the checklist, calibrate sensors, tune loops, and verify sequences against your use case.
• Findings review: deliver a prioritized action list, with quick wins, code‑safe recommendations, and capital planning guidance.
• Ongoing care: quarterly or biannual BAS maintenance with optional remote trend reviews between visits.
• Upgrades and integrations: phased improvements to networks, controllers, and sequences to reduce risk and boost performance.

Industries we serve

• Logistics and industrial warehouses
• Office campuses and multi‑tenant buildings
• Retail, grocery, and restaurants
• Education and municipal facilities
• Healthcare clinics and labs
• Hospitality and entertainment venues

Areas we serve from Fontana

Based in Greater Los Angeles, we support Fontana and the surrounding Inland Empire—including Ontario, Rancho Cucamonga, Rialto, and Bloomington—along with Western Riverside County (Riverside, Corona, Jurupa Valley). We also cover Los Angeles County, Orange County, and Ventura County for regional portfolios.

Make your BAS dependable, efficient, and healthy

Give your operations team fewer surprises and better air quality. Partner with #1 AC Guys for Commercial BAS maintenance in Fontana, including systems that use AC PRO–supplied components. Tell us about your site, and we’ll build a maintenance plan that fits your goals and budget—so your building performs at its best every day.