Johnson Controls International (NYSE:JCI) just found a way to sell power that the data center industry was throwing away. On July 28, the company launched its Absorption Chiller Reference Design Guide, a blueprint that converts waste heat from on-site generators into cooling capacity, freeing up electricity that would otherwise go to running chillers. In a 1GW AI Factory, that shift can unlock up to 97MW of additional computing capacity without adding a single watt of new power generation. The math behind that number is what makes this more than an engineering footnote.
Bull Case: A Blueprint That Prints Capacity
The design guide targets the 57% of energy typically lost as waste heat from on-site power generation, according to the announcement. By routing that heat into absorption cooling instead of venting it, operators can cut cooling-related electric demand by up to 44%, push PUE as low as 1.23, and run with zero on-site water use. Johnson Controls says the resulting efficiency gains could support up to $18 billion in additional revenue over a facility’s life, based on a typical US AI Factory model. The architecture is built to scale from 100MW campuses to gigawatt-scale sites without a redesign, which matters for operators racing to bring capacity online faster than new power plants can be built.
That launch landed one day before Johnson Controls reported fiscal third quarter 2026 results on July 29, and the numbers backed up the data center story. Sales rose 9% to $6.6 billion, with organic sales up 10%. Orders grew 27% organically year over year, and total backlog reached $21.0 billion, up 32% organically. The Americas segment, where data center demand runs hottest, saw orders climb 37% and backlog hit $15.9 billion, up 40% year over year. Johnson Controls raised its full-year guidance on the back of it, lifting organic sales growth to about 8% from a prior 6% estimate and adjusted EPS to about $5.05 from $4.85. CEO Joakim Weidemanis pointed to margin expansion alongside the growth, a sign the demand is translating into profit rather than just volume.
Bear Case: Cracks Beneath The Momentum
Not every signal points the same direction. On August 4, Lei Zhang Schlitz, the company’s VP and President of GP & Solutions, sold 23,417 shares in the open market at a weighted average price of $153.07, cutting his direct stake by 61% to 15,017 shares. Because the sale was executed directly rather than through a pre-scheduled trading plan, it carries more weight than routine insider activity, and it came after the stock had already climbed 44% over the prior year as of that date. That kind of run leaves less room for error if data center orders ever cool off. Elsewhere in the results, EMEA sales slipped 1% as conflicts in the Middle East weighed on the region, and GAAP corporate expense rose 18%, driven by incentive compensation accruals. None of that undercuts the growth story, but it is a reminder the business still has segments moving in the opposite direction.
What The Market Is Pricing In
Hedge fund ownership of Johnson Controls rose to 82 funds from 75 the prior quarter, which points to institutions adding rather than trimming. Short interest sits at just 2.02% of float, a level that suggests little organized skepticism about the story. The stock trades at a forward P/E of 24.94, a multiple that already assumes the data center backlog keeps converting into revenue.
Conclusion
The tension in Johnson Controls right now is straightforward. The chiller technology and the backlog numbers make a real case for sustained AI infrastructure demand, while the insider sale and the stretched valuation are reminders that a lot of good news is already priced in. For the bull case to keep playing out, that 97MW-per-gigawatt efficiency gain needs to show up in actual deployed projects, not just a design guide.
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