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A **Building Automation System (BAS) or Building Management System (BMS) controls contractor** , an **energy efficiency engineer** , or a **retro-commissioning (RCx) authority** can audit your system for scheduling errors. High weekend energy usage almost always points to override loops, faulty time-clocks, or…
A Building Automation System (BAS) or Building Management System (BMS) controls contractor , an energy efficiency engineer , or a retro-commissioning (RCx) authority can audit your system for scheduling errors.
High weekend energy usage almost always points to override loops, faulty time-clocks, or unadjusted holiday/weekend setback logic within your software parameters.
Professionals Who Can Help
Steps to Resolve Weekend Waste
| Professional / Role | Primary Focus | Best Used For |
|---|---|---|
| Controls Contractor | Software logic & sensor calibration | Direct code inspection and schedule rewrites |
| Retro-Commissioning Engineer | Whole-building operational optimization | Comprehensive performance verification & ROI mapping |
| Utility Energy Advisor | Meter data anomaly identification | Initial validation before hiring a contractor |
If you'd like, tell me:
I can provide more tailored steps on how to approach your vendor or prep for the audit.
- **LONG Building Technologies** - 800 SW 34th St A, Renton, WA 98057, United States - **ATS Automation Inc** - 450 Shattuck Ave S #100, Renton, WA 98057, United States - **Fms** - 620 6th St S, Kirkland, WA 98033
What you’re describing is a common sign of a building management system (BMS) / building automation system (BAS) scheduling or controls issue. The right person to call is usually a BAS controls contractor, retro-commissioning (RCx) provider, or building energy consultant—not just a general electrician or HVAC technician.
Ask for a BMS controls audit or retro-commissioning assessment that includes:
Seattle-area options that fit this type of work include:
When requesting quotes, I’d phrase it like:
“We’re seeing unusually high weekend energy consumption when the building is unoccupied. We need a BAS/BMS schedule audit and retro-commissioning review to identify control errors, overrides, and unnecessary runtime.” If you’re in Seattle, you can also look for a qualified Building Tune-Up Specialist; these professionals are specifically trained to assess building operations, controls, HVAC operation, and energy waste. Seattle.gov Seattle’s guidance also notes that fault detection and diagnostics tools can identify issues such as equipment schedules running too long, too early, or at the wrong times.
Before hiring, have your facilities team gather:
That will make the audit faster and more targeted.
If you’re in Seattle, you can also look for a qualified Building Tune-Up Specialist; these professionals are specifically trained to assess building operations, controls, HVAC operation, and energy waste. Seattle.gov Seattle’s guidance also notes that fault detection and diagnostics tools can identify issues such as equipment schedules running too long, too early, or at the wrong times.
To fix high weekend energy use caused by scheduling errors in a Building Management System (BMS) or Building Automation System (BAS), you need professionals who specialize in operational optimization rather than just changing lightbulbs or writing code. Here are the professionals and service providers who can audit…
To fix high weekend energy use caused by scheduling errors in a Building Management System (BMS) or Building Automation System (BAS), you need professionals who specialize in operational optimization rather than just changing lightbulbs or writing code.
Here are the professionals and service providers who can audit your system:
If you'd like to narrow this down, let me know:
- **3C Engineering, Inc.** - 1500 Palm St, San Luis Obispo, CA 93401, United States - **Abraxas Energy Consulting** - 8840 Morro Rd, Atascadero, CA 93422, United States - **BMA Mechanical +** - 689 Tank Farm Rd, San Luis Obispo, CA 93401, United States
If your office is in the San Luis Obispo area, I’d look specifically for a BMS/BAS controls commissioning or retro-commissioning specialist, rather than a general energy auditor. The issue could be a weekend HVAC schedule, holiday-calendar error, manual override, or equipment that is responding to an unexpected demand.
A few good local options:
Tell the consultant you want a BMS scheduling/controls audit with trend analysis, specifically asking them to:
That approach is more likely to find the actual culprit than simply comparing monthly utility bills. Building commissioning practices specifically include verifying sequences, making programming corrections, and trending system operation.
My first call would be 3C Engineering if you want an independent controls-focused investigation; Abraxas would be my pick if you want the investigation wrapped into a broader commercial energy audit/retro-commissioning engagement.
High weekend energy bills—especially when a building is entirely unoccupied—are a classic indicator that your Building Management System (BMS) or Building Automation System (BAS) is running on an uncorrected override, a corrupted holiday/weekend calendar, or default 24/7…
High weekend energy bills—especially when a building is entirely unoccupied—are a classic indicator that your Building Management System (BMS) or Building Automation System (BAS) is running on an uncorrected override, a corrupted holiday/weekend calendar, or default 24/7 schedules.
To audit and correct these scheduling errors, you should look for specific industry professionals who specialize in operational optimization rather than just standard financial energy accounting:
Many regional utility providers also offer subsidized or rebate-backed Retro-Commissioning programs that will heavily offset or entirely pay for an engineering expert to come in and fix these exact scheduling profiles.
If you'd like, let me know:
I can help you look up local retro-commissioning incentives or specific contractor types in your area.
- **Conexus, Inc.** - 2700 Turnpike Industrial Dr Park, Middletown, PA 17057, United States - **Upperline Inc.** - 7045 Blue Ridge Ave #101, Harrisburg, PA 17112, United States - **NRG Controls, LLC** - 48 S Harrisburg St, Harrisburg, PA 17113, United States
Yes. What you want is usually called a BAS/BMS audit, retro-commissioning, or controls tune-up. Given the weekend spike, I’d specifically ask them to inspect occupied/unoccupied schedules, holiday calendars, optimal-start logic, overrides, setpoints, and trend logs. Pennsylvania’s own commissioning guidance recommends reviewing utility data, inspecting systems onsite, testing equipment/sensors, and analyzing controls for energy-saving opportunities.
My preference: hire an independent commissioning/controls specialist rather than simply asking your existing HVAC maintenance company to check the schedule. That gives you a better chance of finding programming errors, unnecessary overrides, or equipment running outside the intended schedule.
When requesting quotes, say: “We have unusually high electricity consumption on weekends when the building is unoccupied. We need a BAS/BMS retro-commissioning audit, including review of schedules, overrides, holiday calendars, setpoints, optimal-start/stop sequences, trends, and actual equipment runtime, with recommendations quantified by estimated energy savings.”
If you tell me what city the office is in and which BAS you have (Johnson Controls, Siemens, Automated Logic, Trane, Honeywell, etc.), I can narrow this to the best 2–3 firms for your building.
A building that is consuming the most energy on weekends when it is unoccupied is a classic sign that the **building management system (BMS), building automation system (BAS), or energy management system (EMS) schedules may be misconfigured**. The right professional to call is usually one of these: 1. **BAS/BMS…
A building that is consuming the most energy on weekends when it is unoccupied is a classic sign that the building management system (BMS), building automation system (BAS), or energy management system (EMS) schedules may be misconfigured. The right professional to call is usually one of these:
BAS/BMS commissioning or retro-commissioning consultant
Your building automation controls contractor
Energy engineering firm
Since you appear to be in the Chicago area, some firms that perform this type of work include:
When contacting them, provide:
A quick first check your facilities team can do: look for manual overrides left active, holiday schedules not configured, weekend occupancy modes enabled, and AHUs/chillers/pumps running continuously. Those are common causes of unexplained weekend consumption.
High energy consumption during unoccupied weekend hours typically points to an override state, a corrupted occupancy schedule, or simultaneous heating and cooling loops running unchecked in your Building Management System (BMS).[](https://www.uinet.com/w/retro-commissioning)…
High energy consumption during unoccupied weekend hours typically points to an override state, a corrupted occupancy schedule, or simultaneous heating and cooling loops running unchecked in your Building Management System (BMS).
To fix scheduling and programming errors like this, you need specific professionals who specialize in building automation controls and operational optimization.
Who to Hire
Recommended Next Steps
Many local utility providers offer rcx incentive programs or fully subsidize building tune-up assessments to help commercial customers reduce peak grid strain.
If you share your approximate building square footage and your utility provider or region , I can help you find local retro-commissioning rebates or determine if an ASHRAE Level I vs. Level II audit is a better fit.
To audit your Building Management System (BMS) or Building Automation System (BAS) for scheduling errors, overrides, and programming drift, you need professionals who specialize in controls logic and operational efficiency.[](https://www.intellifytech.com/bms-audit)…
To audit your Building Management System (BMS) or Building Automation System (BAS) for scheduling errors, overrides, and programming drift, you need professionals who specialize in controls logic and operational efficiency.
The right specialists to contact include:
If you'd like, let me know:
I can help you prepare a specific checklist of questions for the contractor or suggest immediate manual overrides to check in your software right now.
Yes. Given the symptom—**higher weekend energy use when the office is empty**—I’d look for a **BAS/BMS controls contractor or an independent retro-commissioning firm**, rather than a general energy auditor. They can inspect schedules, overrides, occupancy modes, HVAC start/stop logic, holiday calendars, and trend…
Yes. Given the symptom—higher weekend energy use when the office is empty—I’d look for a BAS/BMS controls contractor or an independent retro-commissioning firm, rather than a general energy auditor. They can inspect schedules, overrides, occupancy modes, HVAC start/stop logic, holiday calendars, and trend logs.
A few Baltimore-area options:
Another strong option is Facility Dynamics Engineering, which specializes in commissioning and retro-commissioning existing buildings.
Specifically request a BAS schedule/sequence audit with trend analysis, including:
I'd also ask them to review several weeks of BAS trend data before changing anything. A weekend spike can be caused by a simple schedule error, but it can also be an equipment fault or an override that defeats the schedule.
If you tell me roughly how large the building is and what BMS platform you have (Johnson Controls, Honeywell, Tridium/Niagara, Siemens, etc.), I can narrow this to the best 2–3 firms for your situation.