BMS replacement for facility owners whose controls have aged out.
Aqueduct can replace a BMS, BAS or EMS, along with water management and indoor air quality systems, by controlling equipment directly through LoRaWAN relay switches and through Modbus or BACnet via a field device network controller. Which functions are replaceable at your site is confirmed site by site, and every action runs with owner approval and an auditable command history.
When controls have aged out, take them over and prove every result.
Equipment controlled through relays and field devices you can trust
- LoRaWAN relays
Exhaust fans, control fans and lighting switch through LoRaWAN relay switches where control is enabled.
- Modbus and BACnet
AHUs, RTUs, chiller plants and VAV boxes are controlled through a field device network controller.
- Control clusters
Devices and sensors group into one system, so a zone sensor can inform how an RTU behaves.
Every rooftop unit shown as components and live states
- Component states
Dampers, cooling, heating, fans and the economizer each show a live state instead of raw points.
- Control quality KPIs
Setpoint attainment, comfort compliance and sequence exceptions show whether control is working, on every tab.
- Early signs of failure
Vibration, sound signature and energy drift schedule maintenance first, before a unit fails in service.
Automations keyed to occupancy, with lockouts and full history
- Occupancy triggers
Occupancy from sensors or schedules triggers rules that change how equipment runs in each zone.
- Lockouts by design
New commands wait while one is still acting, which protects equipment from short cycling.
- Savings on a baseline
Equipment power is baselined first, so savings from automation are reported against measured use.
Aged-out controls versus controls you can measure
- Controllers nobody can support still run critical equipment.
- Water, energy and air each need a separate system.
- Nobody can prove what a control change achieved.
- Control runs with no baseline to measure against.
- Failures are discovered when the unit finally stops.
The Aqueduct way- Relays and field devices put equipment under supported control.
- One platform covers water, energy and air with equal weight.
- Command history and the meter prove what each change did.
- Every unit is baselined before savings are claimed.
- Early signs of failure schedule maintenance before the stop.
Signs the BMS has aged out
Replacement is not a slogan. It is the right door when the system in place has stopped earning its keep.
Controllers no one can support
Parts are hard to source and every change needs an outside contractor.
Separate systems for each resource
One system for HVAC, another for energy, another for water and none for air. Nothing adds up.
No proof of what changed
Local, unlogged changes leave nothing to audit when a saving or a complaint is questioned.
Control without a baseline
Schedules run, but nobody can say whether they save anything after weather.
Which categories Aqueduct can take over
Aqueduct can fully absorb these categories. Which functions are replaceable at your site is confirmed site by site during scoping.
| Category | What Aqueduct takes over |
|---|---|
| BMS and BAS | Sequences, schedules and control of AHUs, RTUs, chiller plants, VAV boxes and other equipment |
| EMS and BEMS | Metering, demand, bill validation, weather-normalized baselines and HVAC savings M&V |
| Water management | Water balance, leaks and loss, baselines, treatment plant efficiency where RO and STP are metered |
| IAQ | Zone air targets with ventilation response, balanced against energy |
| FDD | Faults found, diagnosed and fixed, with the ticket routed to your CMMS |
| M&V | Savings verified at the meter against a modeled baseline |
How Aqueduct controls equipment
Two ways, and only two. Both are standard, and both are installed by partners.
LoRaWAN relay switches
For simple on and off loads: exhaust fans, control fans, light switches.
Modbus or BACnet field devices
Through a field device network controller, for AHUs, RTUs, chiller plants and VAV boxes.
Control clusters
Devices and sensors grouped to operate and be analyzed as one system.
Occupancy-driven automation
Occupancy from sensors or schedules triggers rules and changes how equipment operates.
Lockout warnings
New commands wait while one is still being acted on, which prevents short cycling.
Command history
Every command audited for whether it actually executed on the device.
How a replacement runs
Replacement is staged, not a weekend cutover.
Survey
Map what is installed, what works and what has aged out, site by site.
Confirm scope
Agree which functions Aqueduct takes over at this site and which systems stay.
Connect
Partners install relay switches, field device network controllers, meters and sensors where needed.
Baseline
Upload 6 to 12 months of utility bills for day-one baselines, or build one from at least 6 months of data.
Run and verify
Control runs with owner approval. The meter verifies the result, and it becomes the new baseline.
Replacing controls only makes sense when every result can be measured afterward.
Talk to our teamControl quality you can measure
On the device digital twin, control performance is tracked live.
| Measure | What it tells you |
|---|---|
| Setpoint attainment | How often the equipment reaches the setpoint it was given |
| Comfort compliance | How often the space stays inside its comfort band |
| Sequence exceptions | How often the equipment departs from its expected sequence |
| Communication health | Whether the device is talking to the platform reliably |
The three seats
“Can this replace my BMS, BAS and EMS, or only sit beside them?”
It can replace them. Which functions at your site is confirmed site by site, and you can keep anything that still works.
“Does replacement extend to my network control?”
No. For water and energy networks, Aqueduct reads alongside SCADA. Control stays with SCADA.
“Can I deliver a replacement?”
Yes. Relay switches, field device network controllers, BACnet and Modbus are standard paths for your crews.
Related terms
Glossary entries for this way in.
Where teams put it to work
Confirmed site by site
Which BMS, BAS or EMS functions are replaceable is confirmed in a site survey, so nothing is taken over that should stay.
Learn more
Faults fixed, failures prevented
Faults are diagnosed and routed to your CMMS, and early signs of failure schedule maintenance before the equipment stops running.
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Control that leaves a record
Every command runs with owner approval, lockouts and an auditable command history that security reviewers can check line by line.
Learn moreRelated
Common questions
Yes. Aqueduct can replace a BMS, BAS or EMS, along with water management and IAQ systems. Which functions are replaceable at your site is confirmed site by site.
Through LoRaWAN relay switches for simple loads, and through Modbus or BACnet via a field device network controller for AHUs, RTUs, chiller plants and VAV boxes.
Aqueduct is facilities and infrastructure intelligence that acts, then verifies. It can replace a BMS, but controls alone are not what it is.
The owner. Aqueduct only acts where control is enabled and with owner approval, and every command is in the command history.
No. Replacement is staged site by site, and anything that still works can stay.
See Aqueduct on your own facility.
Bring a site, a utility bill or a question. We will show you where the loss is.