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Building Controls News Roundup: Fall 2026

October 12, 202614 min readBy Vertex Control Systems

A lot moved in building automation while we were busy on jobsites this summer. This roundup covers what changed between June and mid-October 2026 across the platforms we install, the energy side, and the market, and what each item means for a building owner in Louisiana. Every claim below links to a primary source: a manufacturer bulletin, a government filing, a press release, or a dated advisory. If we couldn't verify something, it isn't here.

Platforms and vendors

Niagara 5 is coming, and Niagara 4.15 is the last N4

Tridium's Niagara 5 FAQ puts general availability of Niagara 5.0 at December 2026 as a target, and the document is explicit that it is non-binding. The same FAQ confirms that Niagara 4.15 is the last version of N4 and will serve as the long-term support release, with updates through Q3 2028. Also from the FAQ: JACE-8000 ordering closed in Europe at the end of 2025 and closes on December 31, 2026 in the Americas.

Tridium is running a JACE-8000 to JACE-9000 license-transfer promotion through October 31, 2026. On the security side, Tridium published security bulletin 2026-Tridium-1 on July 2 for a program-module vulnerability (CVE-2026-11804) in Niagara 4.14 and 4.15, fixed by the 4.14u6 and 4.15u5 updates or patch jars.

What it means: if you run JACE-8000s, the move to the 9000 is now a dated decision, not a someday one. Get stations onto 4.15 and current update levels this winter, and plan the hardware refresh into 2027 budgets. We cover this on our Niagara N4 programming page.

Johnson Controls: Metasys 16, and 2026 end-of-support dates

Johnson Controls launched Metasys 16.0 at the end of June. The release says the new version supports up to 1,300 IP devices, 30% more than before, adds native redundancy without special hardware, and is "aligned with" IEC 62443-4-2 Security Level 2.

Two dated advisories matter for existing sites. On August 13, CISA published ICSA-26-225-14, a cross-site scripting vulnerability in Metasys (CVE-2026-34491, CVSS 8.0) affecting releases 12 through 15; Metasys 16.0 is not affected and releases 12 and 13 are past end of support. And the Johnson Controls end-of-support list now carries 2026 dates for the Gen-3 NAE35, NAE45 and NAE55 network engines and for legacy N2 controllers.

For Niagara-based JCI sites, the FX80-to-FX90 license-transfer program is a limited-time offer; JCI positions the FX90 for long-term compatibility with Niagara 5. On the software side, JCI announced AI expansions to OpenBlue on August 5, with no availability dates given.

What it means: a building on Metasys 12 or 13 has an unpatched, high-severity vulnerability and no fix coming. Upgrade to a supported release, and segment the BAS from the corporate network while you plan it. Our Johnson Controls page lays out the NAE and N2 upgrade paths.

Honeywell is now a pure-play automation company

Honeywell completed the spin-off of Honeywell Aerospace on June 29, 2026. The remaining company trades as Honeywell Technologies, and Building Automation, which includes Tridium and Niagara, is one of its three segments. In its second-quarter results, Building Automation sales were $2.0 billion, up 9% organically, with orders up 13% "led by robust growth in data center and hospitality verticals." On August 19 Honeywell named Juan Picon president and CEO of Building Automation, effective October 1.

What it means: the business that owns Niagara is now a core segment of a smaller, buildings-and-automation-focused company. For owners of Honeywell WEBs and Optimizer systems, that is a reason for confidence, not concern.

Carrier bought 75F; Trane posted a record backlog

Carrier completed its acquisition of 75F on July 23, 2026. Carrier says 75F's AI and auto-commissioning capability will be combined with WebCTRL, Abound and Nlyte, and folded into its QuantumLeap data-center offering. Carrier's second-quarter release reported orders up about 40%, commercial HVAC orders up about 65%, and data-center orders up more than 300%, alongside record backlog.

Trane Technologies' second-quarter results showed bookings of $7.8 billion, up 39%, and a record backlog of $12.1 billion, up 70%, with Americas Commercial HVAC backlog up 90%. On September 17 Trane introduced Maintenance Manager in Trane Cloud, Trane Cloud Analytics, AI Control for Water Systems, a Cloud Connected BACnet Thermostat, and new Tracer Zone Sensors.

What it means: OEM backlogs this large mean longer lead times on Carrier and Trane equipment. Order early, and plan controls work around confirmed ship dates rather than target dates.

iSMA CONTROLLI is being acquired; MAC36NL reaches end of life

On October 7, IMI plc announced an agreement to acquire iSMA CONTROLLI for an enterprise value of €63 million, with completion expected in the fourth quarter of 2026 subject to approvals. Separately, iSMA's MAC36NL end-of-life announcement sets a last-time-buy window from August 1 through December 31, 2026, with Niagara 4 support for the MAC36NL continuing through the end of 2028; the MAC36PRO is the replacement.

What it means: MAC36NL sites have a two-year runway on Niagara 4, but the hardware swap to the MAC36PRO should be in the plan before N4 support ends.

Smaller notes

Acuity, Distech Controls' parent, reported fiscal fourth-quarter results on October 1 with Intelligent Spaces sales of $297.6 million, up 16.6%. Strato Automation's OPENSTAT VAV controller, announced in January with availability planned for summer 2026, was still listed as "coming soon" as of this writing. And CISA's August 13 advisory ICSA-26-225-08 covers a BACnet denial-of-service issue in Siemens Desigo DXR2 and PXC controllers, fixed in current firmware.

Energy efficiency and incentives

179D now only covers projects that broke ground by June 30

The 2025 tax law put a sunset on the Section 179D deduction for energy-efficient commercial buildings. The statute now reads that the deduction "shall not apply with respect to property the construction of which begins after June 30, 2026," and the IRS summarized the change in Fact Sheet FS-2025-05. For projects that did begin construction by that date, the deduction is still worth claiming when the property is placed in service: for tax years beginning in 2026, the Form 7205 instructions put it at $0.59 to $1.19 per square foot depending on the energy savings achieved, or up to $5.94 per square foot where prevailing-wage and apprenticeship requirements are met.

What it means: document when construction started. If a lighting, HVAC or controls project broke ground before July 1, keep that paper trail and raise 179D with your tax advisor. If it didn't, leave 179D out of the pro forma.

ENERGY STAR is moving to DOE, and Portfolio Manager keeps running

EPA and DOE published an ENERGY STAR Transition Plan on August 28, 2026 that transfers primary leadership of the program to the Department of Energy, with migration of Portfolio Manager and the other tools "targeted for completion before July 2027."

What it means: keep benchmarking. The scores, reports and certifications continue; the agency running the tool is what changes.

Codes: ASHRAE 90.1-2025 is out, and Louisiana moves to the 2024 codes in 2027

ASHRAE has published Standard 90.1-2025, which adopts new annualized efficiency metrics for unitary equipment (IVEC) and heat pumps (IVHE) among many other changes, and ASHRAE said in July that 90.1 will keep its energy-and-cost focus through the 2028 and 2031 editions. Louisiana's commercial energy code is still the 2021 IECC, which took effect July 1, 2023; the state's construction code information sheet says the 2024 ICC editions become effective January 1, 2027. On the sequences side, ASHRAE approved addendum h to Guideline 36-2024 on September 14, and addenda e and l, the latter covering heat-pump plant sequences, went out for public review on July 31.

What it means: design work aimed at 2027 permits in Louisiana should be checked against the 2024 IECC now. And because Guideline 36 keeps changing, a sequence specification should name the edition and addenda it is written to.

Louisiana utility programs: a new rulebook and money on the table

The Louisiana Public Service Commission's general order adopting the Louisiana Energy Efficiency Program (LEEP) rules, dated January 8, 2026, builds on the earlier Quick Start programs with four-year program cycles and most of each utility's budget directed to customer incentives. Entergy Louisiana selected ICF on August 5 to implement its efficiency programs; Entergy's manager of energy efficiency said the programs "will allow us to spend more than $100 million in incentives over the next four years." In New Orleans, the Energy Smart business page showed $4 million of a $9 million fund remaining as of mid-October.

What it means: a controls retrofit, a scheduling and optimization project, or a rooftop unit replacement may qualify for an incentive. Ask before you sign the contract, not after, and move quickly on Energy Smart while funds remain.

What the research says controls are worth

ACEEE's brief on building energy management and control systems reports that these systems typically reduce the energy use of small and medium commercial buildings by 10–20%, and that about 85% of small commercial buildings do not have one. A 2026 ACEEE Summer Study paper by Slipstream on Guideline 36 field demonstrations reports whole-building electricity savings of 11–35% and HVAC savings of up to 58%.

What it means: the savings case for controls and good sequences in small and mid-size buildings is documented, not anecdotal. Our energy management page explains how we scope that work.

Building performance standards, for owners with buildings elsewhere

Washington's Clean Buildings Performance Standard Tier 1 schedule is June 1, 2026 for buildings over 220,000 square feet, June 1, 2027 for 90,001 to 220,000 square feet, and June 1, 2028 for 50,000 to 90,000 square feet. In New York City, the Department of Buildings' Local Law 97 service notice set 2026 compliance reports due by June 30, with extensions to August 29 available on request.

What it means: a Louisiana headquarters does not exempt the rest of a portfolio. If you own buildings in these jurisdictions, the data your BAS collects is now a compliance input.

The market

Data centers are the demand story, including in Louisiana

The Census Bureau's construction spending release for August (published October 1) put private data-center construction at an $84.95 billion annual rate, up 73.2% from a year earlier, while total private nonresidential construction was down 1.0% year over year. In Louisiana, Meta expanded its Richland Parish data center to 5 GW of compute capacity, supporting over 7,500 jobs at peak construction, and Amazon added a third Shreveport-area campus, bringing its planned investment in the region to $18 billion. Applied Digital's $3.6 billion campus in Rapides Parish was announced in May.

Johnson Controls' fiscal third-quarter release shows the same pull: orders up 27% organically and backlog of $21.0 billion, up 32%.

What it means: data-center projects are absorbing controls technicians, electricians and equipment across the Gulf South. That shows up as longer lead times and tighter labor on every other job, including yours.

Outside data centers, construction is soft

The AIA's July 2026 Consensus Construction Forecast projects nonresidential building spending down 0.3% in 2026, with data centers up 33% and commercial construction up 4.8% overall but down about 1% excluding data centers. The August Architecture Billings Index came in at 47.2, meaning billings at architecture firms were still declining.

What it means: for an owner planning a retrofit, controls upgrade, or recommissioning, contractors outside the data-center lane have capacity right now. That is a good position to negotiate from.

Rates, tariffs, and material costs

On September 16 the Federal Open Market Committee raised the federal funds target range by a quarter point to 3.75–4.00%, noting that inflation remains elevated. On tariffs, ACHR News reported that the Section 232 rate on residential HVAC equipment and parts was cut from 25% to 15%, effective June 8; commercial HVAC equipment was not part of that change. ACHR News also compiled an August 2026 list of HVAC price increases from several manufacturers, including increases of up to 7% on some light-commercial lines.

What it means: borrowing got slightly more expensive and equipment did not get cheaper. Projects with a clear energy payback still pencil out; projects that were marginal in the spring need a second look.

Labor is the constraint

The AGC/NCCER 2026 Workforce Survey, released September 3, found 87% of firms have openings for hourly craft workers, and that demand for workers on data centers is keeping labor conditions tight. The Bureau of Labor Statistics projects 11% growth for HVACR mechanics and installers from 2025 to 2035, with about 40,600 openings a year.

What it means: service response times across the industry depend on technician headcount. Preventive maintenance contracts with guaranteed response are worth more in a tight labor market than a loose one. If you know a good controls technician, we are hiring.

Cybersecurity got more specific

Beyond the Metasys and Desigo advisories above, NIST published "Tips & Tactics" for building automation and control system cybersecurity on August 19 and said a draft revision of SP 800-82 is planned for later in 2026.

What it means: the baseline has not changed, but the paper trail has. Network segmentation, current patches, and no inbound remote access are now things an insurer or auditor can point to a federal document and ask about.

What we'd do about it this quarter

  • JACE-8000 sites: confirm 4.15 with current updates, use the license-transfer promotion before October 31, and budget JACE-9000 hardware for 2027.
  • Metasys 12 or 13 sites: upgrade to a supported release and apply the August advisory; put the NAE and N2 end-of-support dates on the capital plan.
  • MAC36NL sites: decide on last-time-buy spares before December 31 and schedule the MAC36PRO migration before 2028.
  • Any site adding equipment: place orders against OEM backlogs now; sequence controls scope to real ship dates.
  • Any efficiency project: record the construction start date for 179D, and ask about Entergy Louisiana and Energy Smart incentives before signing.
  • Every site: segment the BAS, close inbound remote access, and keep firmware current. That is the whole of the NIST guidance in one sentence.

If one of these applies to your building, tell us about it and we will scope the work.

Sources

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