Why a Legacy BMS Upgrade Should Be Planned Now
What Happens When BMS Support Ends?
From April, support for many older Building Management Systems will reduce significantly, increasing the need for a planned legacy BMS upgrade.
If your building operates on a Trend system, this includes Trend 963.
While your system may continue to run, extended support and replacement options will no longer be available. For organisations relying on older or legacy BMS hardware, this marks a critical turning point.
Once support is withdrawn and components become harder to source, what could have been a planned improvement quickly becomes a reactive decision.
For many organisations, a legacy BMS upgrade is no longer optional; it is a matter of risk management. In Trend environments, this would mean moving from 963 to the upgraded modern platform IQVISION.
If you are responsible for estates, facilities or operational continuity, planning your legacy BMS upgrade now helps avoid unplanned downtime, rushed decisions and increased costs later.
What is a legacy BMS system?
A legacy BMS system is an older platform that is no longer fully supported by the manufacturer.
This includes older headend software such as Trend 963, along with ageing controllers and hardware that are now being phased out.
While these systems may still function, they present increasing challenges:
- Limited technical support
- Reduced availability of spare parts
- Compatibility issues with newer hardware
- Greater cybersecurity exposure
Over time, maintaining unsupported systems becomes more expensive and more risky.
Why is support ending?
All technology follows a lifecycle.
As modern platforms are introduced, older systems are retired. Updates stop, spare parts become limited and technical support is withdrawn. This does not mean your system will fail immediately. However, when a component does break, replacing it like-for-like may no longer be possible. That is when what could have been planned maintenance becomes an urgent legacy BMS upgrade.
For buildings operating on Trend systems, this is where IQVISION becomes relevant. IQVISION is the modern replacement for Trend 963 and forms a key part of legacy BMS upgrade strategies. It is the updated viewing window for your BMS, designed with clearer graphics, improved reporting, enhanced alarm handling and stronger remote access capability.
Think of it as moving from Windows 10 to Windows 11. It performs the same core role but is built for modern cybersecurity standards and current hardware compatibility.
Importantly, IQVISION can communicate with current Trend controllers and older ones. This makes it a practical and phased approach to a legacy BMS upgrade, allowing organisations to modernise their system without necessarily replacing all hardware at once.
What happens if you delay a legacy BMS upgrade?
Your system may continue operating normally today.
However, once BMS support ends and hardware is phased out, replacement components may become unavailable. Like-for-like swaps may no longer be possible, and new hardware may not integrate properly with older platforms. As a result, downtime risk increases and costs rise due to urgency.
A single component failure can quickly escalate into a reactive legacy BMS upgrade. Planning a legacy BMS upgrade in advance ensures timing, cost and disruption remain within your control.
It is also important to understand that a legacy BMS upgrade is not plug-and-play. Modern platforms differ in hardware footprint, system architecture and integration methods. A structured approach is essential to minimise downtime and protect operational continuity. Leaving upgrades until after failure significantly increases disruption and forces reactive decision-making.
If your system includes Trend 963, you can read more about IQVISION upgrades and features in our Trend 963 to IQVISION blog.
Why plan your trend 963 to IQVISION upgrade now?
Planning early gives you control.
Planned Implementation
Works can be scheduled around maintenance windows and operational priorities.
Reduced Disruption
Upgrading before failure avoids emergency call-outs and downtime.
Future Compatibility
Ensure your system aligns with modern IT and security standards. IQVISION is built to support modern hardware, cybersecurity requirements and future expansion.
Clear Support Visibility
A supported platform provides defined lifecycle clarity, allowing proactive management rather than reactive repair.
A useful comparison
A useful way to understand the need for a legacy BMS upgrade is to compare it to how smartphones evolve.
A phone can work perfectly for years. However, as manufacturers release new models, both hardware and software move on. Charging connections change, making older accessories harder to replace, and eventually software updates stop altogether. The device may still function, but without updates it becomes less secure, less compatible and increasingly unsupported.
It is not that the phone has suddenly failed. It is that the support around it has ended.
Legacy BMS systems follow the same pattern. Your Building Management System may continue running, but once BMS support ends, hardware is phased out and updates stop, risk increases. When a component eventually fails, a simple repair is no longer possible and a legacy BMS upgrade becomes unavoidable.
What should you do next?
With the April deadline approaching, the priority is clear:
- Identify ageing headend software and controllers
- Assess support status
- Evaluate compatibility risk
- Develop a phased upgrade plan
Waiting does not remove the need for a legacy BMS upgrade.
It simply removes your ability to control how and when it happens.
Plan the upgrade — Don’t be forced into it
A legacy BMS upgrade is not about replacing something that is broken.
It is about avoiding being forced into change when something eventually fails.
If you want to protect uptime, reduce risk and maintain operational control, now is the time to plan.
Frequently Asked Questions
A legacy BMS is generally an older system that is no longer fully supported by its manufacturer. You may find that software updates have stopped, replacement parts are becoming harder to source or newer equipment is no longer compatible. If you’re unsure, ATS can review your existing BMS and check the support status of your software and controllers.
No. The end of manufacturer support doesn’t mean your BMS will suddenly stop working. The problem comes when something goes wrong. Without manufacturer support, software updates or readily available replacement equipment, what would previously have been a straightforward repair can become more difficult and may require an upgrade.
Not necessarily. A legacy BMS upgrade can often be planned in stages rather than replacing everything at once. We can review your existing system to identify what can remain and what needs upgrading, helping you plan the work around your building and budget.
For sites still using Trend 963, IQVISION is Trend’s newer BMS supervisor platform. Moving to IQVISION provides a modern platform for viewing and managing your BMS, while an assessment of the existing system can determine what other hardware, if any, needs to be upgraded.
Ideally, before an unsupported component fails. Planning ahead gives you time to understand what needs replacing, budget for the work and schedule the upgrade around your building. Waiting until a failure occurs can leave you with fewer options and make the work more urgent.
Talk to Our BMS Specialists
Complete the form below with a brief summary of your enquiry, and the appropriate member of our team will be in touch shortly.
