Accelsius delays breakeven, reinforcing concerns that two-phase cooling commercialization is lagging

Overview

Using Accelsius's slower commercialization timeline disclosed during INV's earnings call as its entry point, this report evaluates the outlook for two-phase direct-to-chip cooling in the data center thermal management market. The authors believe management's delay of breakeven beyond 2026, order delays, and shift toward hyperscaler pilots all indicate that two-phase technology remains some distance from large-scale commercial deployment.

Core views

The report's core view is that single-phase liquid cooling is gaining a clearer advantage. Although two-phase cooling theoretically offers heat-transfer advantages, engineering challenges, difficulties in scaling deployments, and limited commercial orders constrain its near-term appeal. Hyperscalers will participate if they recognize a mature, scalable, and technically reliable solution, but two-phase solutions have not yet provided sufficient evidence.

Analysis framework

The report assesses the technology maturity and order-conversion risks of two-phase cooling through interpretation of Accelsius management commentary, industry interviews, equipment power-specification comparisons, and analogies to the historical competition between direct-to-chip cooling and immersion cooling; it also presents valuation methodologies and target prices for covered companies.

Methodology notes

• Valuation methodsEnterprise value/EBITDA multiple

  Valuation based on forward enterprise value/EBITDA multiples

  JCI, TT, and VRT use forward enterprise value/EBITDA multiples; CARR uses a forward enterprise value/EBIT multiple.

• Valuation methodsSum-of-the-parts valuation

  Value business segments separately and sum them

  NVT applies different forward enterprise value/EBITDA multiples to its EC and SP businesses to derive fair value per share.

• Industry researchTechnology commercialization assessment

  Validate technology commercialization through pilots, orders, and deployments

  Progress in hyperscaler pilots, actual orders, and subsequent deployments are viewed as key evidence that could change the assessment of two-phase cooling.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Johnson Controls International PLC

  An Accelsius investor and beneficiary of data center cooling demand

  Strengths

  Maintains an Outperform rating; target price is $190.

  Weaknesses

  Delays in two-phase cooling commercialization may reduce the near-term returns on related technology investments.

  Comparison

  Compared with two-phase solutions still in early validation, mature cooling products offer greater certainty in scalability.

  Risks

  Failure to effectively execute the lean transformation, chiller headwinds weakening the data center business, and operating leverage below management guidance.

• Trane Technologies PLC

  A beneficiary of the data center cooling and liquid-cooling supply chain

  Strengths

  Maintains an Outperform rating; target price is $575.

  Weaknesses

  If commoditized competition emerges in liquid cooling, product innovation advantages may be weakened.

  Comparison

  The technological maturity of single-phase liquid cooling is more favorable for industry leaders.

  Risks

  Escalation of price-fixing litigation, more competitors achieving comparable liquid-cooling innovation capabilities, deterioration in residential and transportation businesses, and chiller headwinds outweighing liquid-cooling benefits.

• Carrier Global Corporation

  An HVAC and data center cooling-related name

  Strengths

  Maintains an Outperform rating; target price is $78; improving U.S. residential and light-commercial cycles could provide a catalyst.

  Weaknesses

  Sensitive to changes in data center capital spending and chiller operations.

  Comparison

  Growth in single-phase liquid-cooling demand may partially offset pressure on traditional refrigeration businesses.

  Risks

  Escalation of price-fixing litigation, slowing hyperscaler capital spending, and R-410A supply tightening falling short of expectations or lasting longer.

• Vertiv Holdings Co

  A core data center power and thermal management name

  Strengths

  Maintains an Outperform rating; target price is $368; highly correlated with data center liquid-cooling demand.

  Weaknesses

  The company may face pressure if technology shifts rapidly away from direct-to-chip cooling or 800V DC and its response is not timely.

  Comparison

  The report believes single-phase liquid cooling is currently more commercially viable than the two-phase route.

  Risks

  Cooling-efficiency improvements reducing demand, an unexpected slowdown in data center expansion, a shift from NVIDIA chips toward custom chips, and technology-route migration.

• nVent Electric PLC

  A coolant distribution unit and data center infrastructure-related name

  Strengths

  Maintains an Outperform rating; target price is $229; expansion in data center liquid cooling provides opportunities.

  Weaknesses

  Coolant distribution units may commoditize faster, and production ramp-up carries execution risk.

  Comparison

  Broader adoption of single-phase solutions benefits suppliers of mature liquid-cooling infrastructure.

  Risks

  Faster-than-expected commoditization of coolant distribution unit and Open Compute Project products, weak production-line performance, and overly long hiring cycles for key positions.

Key data

• Accelsius breakeven timingBeyond 2026Delayed relative to prior expectations and may imply revenue below the previous approximately $100M run-rate guidance.
• Accelsius coolant distribution unit pilot specification250kWThe report states that most single-phase equipment currently exceeds 2MW.
• Single-phase cold plate validation specification15kWThe report states that it provides cooling headroom of approximately six times current chip thermal design power.
• JCI target price$190Based on a 20x forward enterprise value/EBITDA multiple and forward EBITDA of $5.3B.
• TT target price$575Based on a 22x forward enterprise value/EBITDA multiple and forward EBITDA of $5.9B.
• CARR target price$78Based on an 18x forward enterprise value/EBIT multiple and forward EBIT of $4.04B.
• VRT target price$368Based on a 27x forward enterprise value/EBITDA multiple and forward EBITDA of $5.3B.
• NVT target price$229Applies 17x and 26x forward enterprise value/EBITDA multiples to the EC and SP businesses, respectively.

Impact & implications

If two-phase direct-to-chip cooling continues to lack verifiable large orders and deployments, its market penetration may be slower than expected, and data center liquid-cooling demand is more likely to flow first to single-phase solutions and their related supply chains. For covered companies, the report maintains positive ratings, but performance will still depend on data center capital spending, chiller operations, and liquid-cooling product competitiveness.

Risks

• A breakthrough in engineering reliability, cost, or scalable deployment for two-phase direct-to-chip cooling could overturn the report's cautious assessment.
• If Accelsius's hyperscaler pilots quickly convert into substantive orders and deployments, commercialization expectations for two-phase cooling could improve.
• Slower data center capital spending would weaken demand for liquid cooling, coolant distribution units, and related equipment.
• Intensifying industry competition or product commoditization could compress margins for liquid-cooling equipment suppliers.

What to watch

• The progress of Accelsius's collaborations and pilots with hyperscalers.
• Whether pilots convert into actual orders and subsequently lead to real deployments.
• Whether engineering issues such as recirculation in two-phase cooling are resolved.
• Continued increases in the power capacity of single-phase cooling equipment and cold-plate heat-dissipation capability.
• Hyperscaler data center capital spending and liquid-cooling procurement pace.