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Home / Themes / Fiscal Spend '25: HVAC

Theme thesis · 5/5 sections · Tickers 7 with notes · 3 pending

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Bull / Bear Details has the investment thesis and bull/bear points. Overview is monitoring guidance (hiring, forums, second-order trends, search keywords, Google Trends, datasets).

Bull / Bear Details

Fiscal-driven reindustrialization, energy transition, and hyper-accelerating data center/AI infrastructure spending are driving sustained multi-year demand for

Thesis

Fiscal-driven reindustrialization, energy transition, and hyper-accelerating data center/AI infrastructure spending are driving sustained multi-year demand for electrification, thermal management, and efficient power conversion. The bull case is more compelling due to unprecedented data center demand and robust backlogs, despite persistent supply chain and labor constraints.

Bull case

Extraordinary growth in data center and AI infrastructure buildout is creating unprecedented demand for advanced thermal management and power solutions, with nearly 100 GW of new data centers expected between 2026 and 2030, effectively doubling global capacity, as evidenced by record backlogs and significant capacity expansions from key theme constituents.
Accelerating electrification and energy efficiency mandates, coupled with the ongoing refrigerant transition (phasing out R-410A for lower GWP alternatives like R-454B and R-32), are driving a secular pull for new and upgraded HVAC, power conversion, and energy storage systems across commercial, industrial, and federal facilities.
Ongoing infrastructure and manufacturing fiscal programs, including the final year of authorization for Infrastructure Investment and Jobs Act (IIJA) funds in FY26, continue to accelerate public and private project starts, boosting order pipelines for equipment and system suppliers, particularly for U.S.-centric manufacturers aligned with domestic production and reindustrialization initiatives.

Bear case

Persistent and evolving supply chain challenges, including fluctuating raw material costs (e.g., copper, aluminum), component shortages (e.g., heat pumps, AC units), global shipping delays, and tariffs on imported components, continue to drive up equipment prices and introduce significant execution risks, potentially delaying project revenue and compressing margins, despite active mitigation efforts by companies.
Intensifying skilled labor shortages across both the general HVAC industry and, critically, the rapidly expanding data center construction sector, pose a significant constraint on project execution and capacity expansion, leading to rising labor costs and potential project delays, with labor explicitly cited as a primary pinch point by theme constituents.
High valuations for companies within the theme, coupled with the risk of political gridlock potentially moderating new fiscal project awards or leading to budget cuts in some government programs, could make the sector vulnerable to any perceived slowdown in demand or execution missteps, leading to multiple compression.

Overview

Hiring Trend Watchpoints

High-performing operators like Comfort Systems (FIX), Modine (MOD), and Vertiv (VRT) are in an aggressive hiring phase to convert record backlogs and expand capacity, particularly for data center and modular construction projects. Expect to see sustained and increasing job postings for: Skilled Trades (HVAC Technicians, Electricians, Plumbers, Welders, Pipefitters, especially those with experience in industrial or data center environments); Engineering Roles (Mechanical Engineers for thermal management, Electrical Engineers for power distribution, Process Engineers, and Automation Engineers); Project Management (Senior Project Managers and Construction Managers with experience in large-scale commercial, industrial, or data center projects); and Manufacturing & Production roles related to new facility ramp-ups, lean manufacturing, and quality control. Geographically, watch for concentrated hiring in key data center hubs (e.g., Northern Virginia, Texas, Arizona, Ohio, Atlanta) and manufacturing sites (e.g., Modine's US facilities, Vertiv's Americas plants, FIX's modular assembly locations). Confirmation of theme execution: Continued growth in job postings for these critical roles, particularly for skilled trades and engineers, coupled with management commentary on successful workforce scaling and project execution. An increase in postings for automation or robotics specialists could signal proactive mitigation of labor shortages. Warning of deterioration: A slowdown or plateau in job postings for critical operational roles, an increase in "efficiency" or "cost reduction" focused roles without corresponding growth roles, or management commentary indicating significant project delays due to labor constraints.

Forum Watchlist

Reddit — r/datacenterHigh
Discussions on data center construction, cooling technologies (liquid cooling, immersion), power infrastructure, supply chain issues, project delays, and hyperscaler capex trends.
Reddit — r/HVACHigh
General industry sentiment, technician insights on supply chain (component availability, lead times), product performance, labor availability and skill gaps, and refrigerant transition challenges.
LinkedIn Groups — Data Center Professionals GroupMedium
Professional discussions on new technologies, project announcements, M&A activity, talent acquisition challenges, and regulatory impacts within the data center and critical infrastructure space.
Industry Forum — ASHRAE ForumsMedium
Technical discussions on HVAC standards, energy efficiency, refrigerant alternatives (A2L, R-454B), building automation systems, and advanced thermal management solutions.
Industry News Comments — Data Center Dynamics (DCD) / The Data Center Journal comment sectionsMedium
Real-time reactions to industry news, project updates, technology breakthroughs, and potential bottlenecks from industry practitioners and experts.

Second Order Trends

The Fiscal Spend '25: HVAC theme is evolving with several intensifying second-order trends: 1. Liquid Cooling as the New Standard: The shift from traditional air cooling to liquid cooling solutions for high-density AI servers is accelerating rapidly. This is driving demand for specialized infrastructure like Coolant Distribution Units (CDUs), direct-to-chip cooling, and immersion cooling, expanding the addressable market for thermal management providers beyond traditional HVAC. 2. Hyper-Modularization of Data Center Infrastructure: To meet unprecedented demand and accelerate deployment, there's a growing trend towards modular, pre-fabricated data center components and entire facilities. This includes modular power, cooling, and even fully integrated data center modules, benefiting companies with advanced manufacturing and assembly capabilities. 3. Energy Storage & Grid Interconnection: The immense power demands of AI data centers are pushing the limits of existing grids. This is leading to increased integration of on-site energy storage (e.g., large-scale batteries) and sophisticated grid interconnection solutions, creating new opportunities for power conversion and thermal management providers involved in these hybrid energy systems. 4. AI for HVAC Optimization: Beyond cooling AI, AI itself is increasingly being deployed to optimize HVAC systems for energy efficiency, predictive maintenance, and smart building management in commercial and industrial settings, creating a feedback loop for innovation and demand for advanced controls. 5. Geopolitical Reshoring & Supply Chain Diversification: Ongoing geopolitical tensions and fiscal incentives (e.g., CHIPS Act) are reinforcing the trend of manufacturing reshoring and supply chain diversification. This drives new factory construction and upgrades, creating a distinct but related demand for industrial HVAC and process cooling, with a focus on domestic production capabilities.

Search Keywords Brand Product

data center liquid cooling
AI server cooling
modular data center solutions
A2L refrigerant transition
heat pump commercial
industrial HVAC systems
800V DC power solutions
energy efficient thermal management
CDU coolant distribution unit
immersion cooling systems

Search Keywords Policy Regulatory

CHIPS Act construction
IRA manufacturing incentives
HFC phasedown schedule
US tariffs HVAC components 2026
data center energy efficiency regulations
electrification grants
IIJA infrastructure projects

Search Keywords Event Phrases

Q3 2026 earnings HVAC
hyperscaler capex guidance 2026
data center project awards
HVAC labor shortage impact
A2L refrigerant availability
AI infrastructure investment trends

Google Trend Product Category Intent

• liquid cooling for AI price • modular data center cost • A2L refrigerant alternatives • commercial heat pump efficiency • data center power consumption • industrial chiller solutions

Google Trend Consumer Intent

• best energy efficient AC • smart home climate control • heat pump installation cost • HVAC repair quotes • home energy audit • commercial building energy savings

Google Trend Macro Policy Terms

• US manufacturing boom impact • clean energy incentives 2026 • data center power demand growth • infrastructure spending bill updates • electrification subsidies

Top datasets to track

1. Total Construction Spending: Manufacturing in the United States Type: Economic Data · Provider: U.S. Census Bureau / FRED Cadence: Monthly Why it matters: Tracks the 'reindustrialization' aspect of the theme, indicating the pace of new factory and manufacturing facility construction, which drives demand for industrial HVAC and related systems. Suggested query: FRED TLMFGCONS Confidence: 0.95

2. Data Center Construction Starts / Capacity Additions (MW) Type: Industry Data · Provider: Dodge Construction Network / CBRE Cadence: Quarterly Why it matters: Directly gauges demand pull-through for thermal and modular HVAC systems, reflecting the core AI/data center build cycle. Extraordinary growth signals sustained demand for theme constituents. Suggested query: Dodge Construction Network data center starts MW Confidence: 0.98

3. U.S. Nonresidential Construction Spending (Mechanical & Electrical) Type: Economic Data · Provider: U.S. Census Bureau Construction Put-in-Place Cadence: Monthly Why it matters: Confirms the broader demand backdrop and fiscal project flow for commercial, industrial, and federal facilities, particularly for mechanical and electrical components critical to HVAC systems. Suggested query: U.S. Census Bureau Construction Put-in-Place mechanical electrical Confidence: 0.92

4. AHRI U.S. HVAC Shipments (Central AC + Heat Pumps) Type: Industry Data · Provider: Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Cadence: Monthly Why it matters: Gauges residential and light commercial HVAC demand, particularly important for tracking the impact of the A2L refrigerant transition and heat pump adoption rates across the market. Suggested query: AHRI HVAC shipments data Confidence: 0.9

5. Company Job Postings (Engineering, Project Management, Skilled Trades) Type: Alternative Data · Provider: Thinknum / Revelio Labs / Indeed / Company Career Pages Cadence: Weekly / Monthly Why it matters: Provides real-time insight into backlog conversion, capacity expansion, and project execution momentum by tracking hiring trends for critical roles at key theme constituents (e.g., FIX, MOD, VRT). Suggested query: Thinknum job postings Comfort Systems Modine Vertiv Confidence: 0.93

Key Metrics3 rows

Metric	Cadence	What It Signals	Update Source
Engineering & Project Management headcount growth (Manager–Staff)	Monthly	Tracks real-time backlog conversion and project execution momentum	Google_Sheets
Data center construction starts / capacity additions (MW)	Quarterly	Gauges demand pull-through for thermal and modular HVAC systems (MOD, AAON, FIX)	Google_Sheets
U.S. nonresidential construction spending (Mechanical & Electrical)	Monthly	Confirms demand backdrop and fiscal project flow for FIX, MOD, and FERG	Google_Sheets

Upcoming Catalysts18 rows

Catalyst	Estimated Timing	Estimated Date Start	Estimated Date End	Why It Matters	Ticker Or Theme Specific	Source Types	Contributing Tickers	Mention Count	Base Score	Source Weight	Specificity Weight	Macro Bridge	Macro Bridge Multiplier	Theme Score	Date Aggregated	Manual Override	Bridge Mention Count	Theme Base Score	Theme Importance Score	Catalyst Source	Catalyst ID	Transcript Date	Source Type
Federal Open Market Committee (FOMC) interest rate decisions and economic projections.	July 2026 - December 2026 (ongoing meetings)	2026-07-28	2026-12-09	Monetary policy, particularly interest rate changes, influences overall economic activity, construction spending, and the cost of capital for projects. Falling interest rates could reduce fiscal urgency and moderate new project awards, impacting the broader fiscal spend theme. The FOMC meetings provide crucial updates on the Federal Reserve's stance and economic outlook.	Theme	theme_composer	ALL	6	0.0018	1.18	0.92	Regulatory/Policy, Economic	1.688	0.3311	2026-06-21	False	1	1.0128	185.5454	Theme composer
Congressional action on the reauthorization of surface transportation programs under the Infrastructure Investment and Jobs Act (IIJA).	Q3 2026, leading up to the September 30, 2026 expiration, potentially extending into early 2027	2026-07-01	2027-01-31	The IIJA's surface transportation programs expire on September 30, 2026, and congressional action on a new multiyear transportation law or an extension will directly impact federal funding for infrastructure projects. This is a significant demand driver for the HVAC theme, particularly for companies involved in public works and large capital projects like Ferguson, Comfort Systems, Modine, and Trane Technologies.	Theme	theme_composer	FERG, FIX, MOD, TT	4	0.0066	1.18	0.92	Economic	1.25	0.8989	2026-06-21	False	2	0.6536	88.6995	Theme composer
Completion of the acquisition of FloWorks, a leading distributor of highly technical valves and flow control solutions.	in our third quarter	2026-07-01	2026-09-30	This is one of Ferguson's largest acquisitions, expected to be immediately accretive to adjusted EPS, increase total addressable market from $340 billion to $400 billion, and enhance growth strategy with expanded end market and product exposure.	Ticker															FERG (ticker)	FERG_0237cc80	2026-08-10	earnings_transcript
Stabilization and eventual recovery of the residential end markets, including the alleviation of pressure in the HVAC segment as the industry navigates new efficiency standards.	as we move throughout the year	2026-03-01	2026-12-31	Residential markets represent approximately half of Ferguson's revenue. A recovery would remove a significant headwind, contribute to overall revenue growth, and potentially allow the company to achieve the higher end of its 2026 guidance.	Ticker															FERG (ticker)	FERG_eae52a86	2026-02-24	earnings_transcript
Completion of the spin-off of Modine's Performance Technology segment and its merger with Gentherm, pending SEC and shareholder approvals, and an IRS determination letter.	before the end of the calendar year	2026-06-03	2026-12-31	This strategic action will allow Modine to focus on higher-growth businesses, potentially improving its valuation and investor sentiment, and will lead to an updated full-year outlook for the remaining business.	Ticker															MOD (ticker)	MOD_ab639094	2026-05-26	earnings_transcript
Modine's ability to successfully pass through and recover higher material costs and tariffs, including the new 32 aluminum tariffs, through pricing adjustments and surcharges.	in fiscal 27	2026-07-01	2027-03-31	Successful recovery is expected to drive margin improvement across all three business segments in fiscal 2027, significantly impacting profitability and investor sentiment.	Ticker															MOD (ticker)	MOD_01e5ca02	2026-05-26	earnings_transcript
Modine completing the ramp-up of its data center production capacity, effectively doubling the current operational capacity by the end of fiscal year 2027.	by the end of the fiscal year	2026-04-01	2027-03-31	This milestone is critical for meeting the strong demand from existing and new data center customers, including the $4 billion LTA, and achieving the aggressive data center revenue growth targets.	Ticker															MOD (ticker)	MOD_b8f034eb	2026-05-26	earnings_transcript
Modine securing additional long-term capacity agreements (LTAs) with other hyperscale data center customers beyond the recently announced $4 billion LTA.	ongoing, long-term	2026-06-03	2029-12-31	Such agreements would further de-risk future revenue streams, provide greater visibility into demand, and potentially necessitate further capacity investments, reinforcing Modine's position in the hyper-growth data center market.	Ticker															MOD (ticker)	MOD_8e015535	2026-05-26	earnings_transcript
The Scott Springfield commercial HVAC business achieving a strong recovery in fiscal 2027 after being negatively impacted by tariffs in the prior year.	expected to rebound in fiscal 27	2026-04-01	2027-03-31	A rebound in this segment would contribute to the overall commercial HVAC growth and profitability, diversifying revenue streams within the Climate Solutions segment.	Ticker															MOD (ticker)	MOD_99fa8903	2026-05-26	earnings_transcript
Closing of the Thermal Key acquisition.	anticipated to close in a few months	2026-07-01	2026-09-30	The acquisition is expected to expand Vertiv's thermal management portfolio and enhance capabilities for AI data centers, potentially driving revenue growth and strengthening its competitive position in a critical market segment.	Ticker															VRT (ticker)	VRT_af10a162	2026-04-22	earnings_transcript
Launch of Vertiv's 800-volt architecture product portfolio.	second half this year launches of portfolio	2026-07-01	2026-12-31	The successful introduction of 800-volt products is crucial for Vertiv to maintain its leadership and capture market share in the rapidly evolving high-density AI data center segment, expanding its addressable market.	Ticker															VRT (ticker)	VRT_eaa28596	2026-04-22	earnings_transcript
Successful mitigation of tariff exposures, including recent changes under Section 122 and 232.	continue to materially offset those	2026-04-01	2026-12-31	Effective tariff countermeasures are essential for protecting Vertiv's adjusted operating margins and achieving its profitability guidance amidst evolving trade dynamics.	Ticker															VRT (ticker)	VRT_c7ea5f9b	2026-04-22	earnings_transcript
EMEA returning to year-over-year sales growth.	second half	2026-07-01	2026-12-31	A recovery in EMEA sales would validate management's confidence in the region's demand trajectory, contributing to overall revenue growth and mitigating concerns about regional weakness.	Ticker															VRT (ticker)	VRT_b01bf2f8	2026-04-22	earnings_transcript
Realization of the demand trajectory for the aftermarket add-on replacement HVAC market in 2026, as management hopes for normalization after a 6% decline in 2025.	the season, balance of this year	2026-04-01	2026-12-31	A stronger-than-expected recovery or normalization in this market would be bullish for Watsco's unit volumes and sales, while continued weakness could negatively impact revenue and profitability.	Theme															WSO (ticker)	WSO_d4c3d057	2026-02-17	earnings_transcript
Realization of the overall industry sell-through volumes for HVAC equipment in 2026, as management acknowledges OEM forecasts (some down 0-15%) but states it's 'too early to tell' for their own business, hoping for normalization.	this year, in 90 days (from Feb 17, 2026)	2026-05-17	2026-12-31	Stronger-than-expected industry demand would be bullish for Watsco's sales and market share, while weaker demand could negatively impact revenue and profitability.	Theme															WSO (ticker)	WSO_ae6f47ed	2026-02-17	earnings_transcript
The full impact of diminishing 410A refrigerant availability on HVAC system replacement dynamics, requiring contractors to replace both indoor and outdoor units with new A2L systems.	near 0 today and will be at 0 soon, this coming year, next year, '27	2026-01-01	2027-12-31	This shift could drive higher unit volumes for full systems but also potentially lead to consumers delaying replacements due to increased cost, impacting overall demand and replacement cycles.	Theme															WSO (ticker)	WSO_08751f72	2026-02-17	earnings_transcript
Ferguson to update its full-year 2026 guidance to reflect the expected FloWorks acquisition.	alongside our Q3 earnings	2026-10-01	2026-11-30	This will provide a clearer financial outlook for the company, incorporating the significant impact of the FloWorks acquisition on sales, margins, and earnings per share.	Ticker															FERG (ticker)	FERG_9c5079e0	2026-08-10	earnings_transcript
Modine beginning to recognize revenue from the $4 billion long-term capacity locking agreement for data center cooling products in fiscal Q4 2027.	some ramp beginning in Q4	2027-01-01	2027-03-31	This marks the start of a significant revenue stream with high visibility, validating the capacity expansion investment and providing strong top-line growth for calendar years 2027-2029.	Ticker															MOD (ticker)	MOD_8f9713ef	2026-05-26	earnings_transcript

Notes2 rows

Earnings Overview

Date	Type	Comment	Detail	Sentiment	Tickers
2025-10-04	Earnings Summary	The Fiscal Spend '25: HVAC group saw broadly mixed Q2 (Jul–Sep 2025) results as execution and supply-chain dynamics diverged. Comfort Systems (FIX) led, posting record margins and +20% sales growth on electrical and modular demand, driving strong stock gains. Modine (MOD) and Belimo (BEAN) delivered steady results with resilient commercial demand but limited multiple expansion. AAON (AAON) missed on ERP and coil supply issues, sending shares down ~14% despite robust BASX growth and backlog strength. Trane (TT) and Johnson Controls (JCI) both cited order strength but faced China weakness and refrigerant headwinds. Overall, service-heavy names outperformed, while manufacturing-heavy peers lagged on execution risk.	Earnings Overview	mixed
2026-06-21	Theme Refresh Synthesis	The Fiscal Spend '25: HVAC theme is strongly validated by accelerating AI-driven data center demand, driving hyper-growth and record backlogs for Modine, Comfort Systems, and Vertiv. These companies are actively expanding capacity to meet unprecedented demand for thermal management and power solutions. Fiscal programs and energy efficiency mandates continue providing tailwinds, despite persistent supply chain and labor challenges, reinforcing a positive outlook.	Market Commentary	Positive	MOD, FIX, VRT, FERG

Constituents

AAONT3
— AAON, Inc.
FERGT3
— Ferguson plc
FIXT3
— Comfort Systems USA, Inc.
MODT3
— Modine Manufacturing Company
TTT3
— Trane Technologies plc
VRTT3
— Vertiv Holdings Co
WSOT3
— Watsco, Inc.
BEAN.SWT3
· no notes yet
JCIT3
· no notes yet
LIIT3
· no notes yet

Fiscal Spend '25: HVAC (view performance)