The building automation industry is entering a period of planned transition as LonWorks (LON) technology moves toward the end of its manufacturing lifecycle. While many LON-based systems continue to operate reliably today, recent announcements across the industry signal that now is the right time for building owners and facility managers to begin planning for the future.
At Mechanical Services and Design, our goal is to help clients stay ahead of these changes with clear information, thoughtful planning, and long-term solutions.
What’s Changing in the Industry
Several key developments are shaping the future of LON-based systems:
- LON controllers are no longer being actively manufactured, with only limited inventory still available.
- Neuron chips, a core component of LON controllers, have ceased production. Final deliveries are expected to conclude by March 2026.
- Manufacturers such as Distech Controls, Johnson Controls (JCI), and others have already ended production of LON controllers.
- Trane and Honeywell have not yet formally announced end-of-production timelines, but industry-wide trends indicate a broader shift away from LON technology.
- Industry organizations, including LonMark International and ASHRAE, have published guidance outlining the transition toward more widely supported open protocols.
These changes do not mean existing systems will suddenly stop working. However, they do affect long-term serviceability, parts availability, and future expansion options for buildings currently operating LON-based automation systems.
Why Proactive Planning Matters
For facilities with LON-based controls, the primary risk is not immediate failure, but future limitations. As components become harder to source and manufacturer support declines, maintaining or expanding these systems may become more complex and costly over time.
Proactive planning allows building owners to:
- Avoid emergency replacements
- Align upgrades with capital planning cycles
- Improve system performance and cybersecurity
- Transition on their own timeline rather than reacting to supply constraints
Migration Paths and Long-Term Solutions
Modern building automation has largely standardized around protocols such as BACnet/IP, which offer broader manufacturer support, improved integration, and long-term viability.
Migration strategies can include:
- Phased controller replacement
- Hybrid systems during transition periods
- Full system upgrades aligned with renovations or energy initiatives
Each facility is different, which is why a customized approach is essential.
How Mechanical Services and Design Is Supporting Clients
To support clients during this industry transition, we are taking several proactive steps:
- Identifying client sites currently operating LON-based systems
- Developing clear talking points and upgrade strategies tailored to each facility
- Coordinating educational outreach through direct mail and social media
- Providing one-on-one guidance to help clients make informed decisions
Vincent Havlin will serve as the primary point of contact for clients navigating this transition. Vincent and our controls team are available to review existing systems, discuss options, and help develop a long-term plan that fits operational and budgetary goals.
Let’s Start the Conversation
The transition away from LON technology is an industry-wide evolution, not a crisis. By starting the conversation now, building owners can stay in control of their facilities, budgets, and timelines.
If your facility currently uses LON-based controls, or if you are unsure what protocol your system is running, we encourage you to reach out and start planning ahead.
Contact Information
Vincent Havlin
📧 [email protected]
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