BMS Upgrades & Retrofits in Sussex
Alpha Controls upgrades and retrofits building management systems across Sussex — migrating legacy platforms to current supported architectures, extending system capabilities, and improving energy performance without the disruption of a full replacement. We work with Trend 963 end-of-life migrations, Honeywell Excel upgrades, Satchwell replacements, and Johnson Controls legacy systems.
The case for upgrading a legacy BMS is usually made by one of three factors: the platform has reached end of support (technical support for Trend 963 ended in January 2025), hardware replacements are becoming difficult to source, or the building's energy performance requirements can no longer be met by the existing control strategy.
Our upgrade approach for Sussex buildings prioritises retaining existing IQ field controllers and field wiring where they remain serviceable. We assess each system individually and provide an honest view of what can be retained, what needs replacing, and what the realistic payback period looks like for the capital investment.
BMS Upgrades in Sussex — Local Context
Sussex has a concentration of 1960s and 1970s commercial and civic buildings — particularly in Brighton, Worthing, and Crawley — that were built with early pneumatic or basic electric controls that have long since passed their useful life. Upgrading these buildings to modern BMS often coincides with wider refurbishment programmes driven by MEES compliance or change of use. Each conversion type — office to residential, retail to mixed-use, civic to commercial — requires a different approach to the environmental control strategy.
What We Cover
- Trend 963 end-of-life migration to IQVISION
- Honeywell Excel, Satchwell, and Johnson Controls legacy upgrades
- Field controller retention where serviceable — significant cost saving
- Front-end replacement with modern supervisory platforms
- Energy performance improvement through updated control strategies
- Remote monitoring capability added to previously local-only systems
- Full commissioning and documentation of upgraded system
- Post-upgrade support and planned maintenance
Areas We Cover in Sussex
Brighton and Crawley are the main commercial centres, with Gatwick airport generating significant demand for high-reliability environmental controls and BMS in adjacent logistics and office premises.
Ready to discuss your project?
Talk to our team about bms upgrades requirements for your Sussex building.
Get in TouchFrequently Asked Questions
What legacy BMS platforms can you upgrade in Sussex?
We upgrade Trend 963, Honeywell Excel, Satchwell, Johnson Controls Metasys, and older Siemens platforms. For Trend upgrades, we migrate to IQVISION as the supervisory front end, retaining existing IQ field controllers wherever their condition justifies it.
Can the upgrade be done in phases to spread the cost?
Yes. We regularly phase BMS upgrades across financial years or building zones — upgrading the supervisory platform first, then field controllers floor by floor or plant by plant. We design the phasing sequence so each phase delivers a fully functional system.
How disruptive is a BMS upgrade for building occupants?
Most upgrade work, including in Sussex, is carried out during normal working hours with minimal occupant disruption. Plant downtime is typically limited to individual changeover points — usually minutes per zone — rather than extended shut-downs. We agree the works programme with the FM team before starting.
BMS Upgrades in Sussex — Talk to Our Team
Alpha Controls provides bms upgrades services across Sussex. Trend-, Distech- and Siemens-trained engineers. Honest pricing, proper documentation.