DOI : 10.17577/A contractor who installs cooling infrastructure in data centers told me last spring that his backlog had stretched to nine months. In the same conversation, he admitted that half his customers were asking whether they’d still need his product in five years. That tension sits underneath much of the investment interest in data center infrastructure right now. Demand is real and immediate. The technology it depends on is changing faster than the buildings can.
The Unglamorous Part of the Boom
Most investor attention goes to chips and the companies designing AI models. The physical buildout gets less coverage, though it involves enormous sums: power equipment, cooling systems, structured cabling, and the enclosures that keep hot and cold air apart.
Containment is a good example of a business that grows quietly. Servers pull in cool air from one aisle and push hot exhaust into the next. Without barriers, the two mix, and cooling systems work harder than they need to. Walling off one aisle lets operators raise supply air temperatures and cut cooling energy, often noticeably. For a large facility paying millions a year in electricity, the payback on containment is usually measured in months, not years.
Older facilities offer a steady retrofit market. Plenty of halls built a decade ago never had containment at all.
Panels, Doors, and Fire Code
Installed well, hot aisle containment panels form a ceiling above the exhaust aisle, with doors at each end of the row and blanking panels filling every empty rack slot. Skip the blanking panels and hot air leaks back through the gaps, undoing much of the benefit.
Fire code complicates every project. Containment can block sprinkler coverage, so many ceiling panels are designed to drop away or shrink at a set temperature, letting water reach the fire. Local inspectors interpret these requirements differently, and a design approved in one county can stall in another.
Retrofits carry their own headaches: cable trays in the wrong place, uneven rack heights, and work that has to happen around live equipment without disrupting customers.
For investors, the distinction worth noticing is between fabrication and installation. Panels and frames are fairly commoditized sheet metal. Design, permitting, and installation in a running facility take skilled labor that’s genuinely scarce, and that’s where pricing power tends to sit.
Does Liquid Cooling Shrink This Market?
Partly. Traditional enterprise racks draw roughly 5 to 15 kilowatts. Racks built for AI training often exceed 40, and some newer designs go well past 100. Air alone can’t remove that much heat, so operators are moving to liquid cooling, piping coolant directly to the chips.
The common assumption is that this makes air containment obsolete. It doesn’t, at least not soon. Liquid cooling typically handles most of the chip heat, but memory, power supplies, and networking gear still dump heat into the room. Most AI halls being built today are hybrids. Add the large stock of conventional colocation and enterprise space, and containment demand stays healthy, just growing more slowly than the headline AI numbers suggest.
The risk for a containment-focused business is concentration. A supplier selling mostly into hyperscale AI builds is more exposed to design changes than one with a wide base of colocation and retrofit clients.
What Fills the Racks
AI training gets the attention, but a large share of data center demand comes from ordinary enterprise data work: pipelines that collect, clean, and move business data for reporting and analytics. Tools that make those pipelines easier to build expand how much compute a company uses. Prophecy, a visual pipeline builder that generates code for cloud data platforms, is one example of the tooling pushing more of that work onto large cloud infrastructure.
That demand is less dramatic than AI training runs and considerably steadier. Companies don’t pause their nightly sales reporting because a model release slipped.
A Better Question to Ask
The data center boom rewards plenty of boring businesses, but not all of them equally. Before backing any physical infrastructure play, ask a narrow question: what happens to this product if rack density doubles again in five years? The suppliers with a confident, specific answer are usually the ones that saw the last doubling coming.
