AAON (AAON) Q1 2024: Data Center Pipeline Drives Basics Backlog to 20% of Bookings
AAON’s Q1 revealed a mixed start, with softer volumes offset by robust backlog growth and margin expansion. Data center demand is reshaping the Basics segment, now contributing 20% of bookings, and management expects a pronounced second-half recovery as capacity projects come online. Investors should focus on the timing of refrigerant transition and execution on capacity expansion as key levers for the year.
Summary
- Data Center Demand Reshapes Mix: Basics segment now accounts for 20% of bookings, signaling structural shift.
- Margin Expansion Amid Volume Dip: Gross margin improved on price and cost discipline, despite operational disruptions.
- Second-Half Recovery Hinges on Execution: Backlog conversion and capacity ramp are critical for full-year growth realization.
Business Overview
AAON designs and manufactures premium commercial and industrial HVAC (heating, ventilation, and air conditioning) systems, generating revenue through equipment sales, aftermarket parts, and service. The business is organized into three major segments: AAON Oklahoma (rooftop units), AAON Coil Products (custom coils), and Basics (custom airside and liquid cooling, with a growing data center focus). Revenue is driven by project-based orders, with backlog and bookings as leading indicators of future sales performance.
Performance Analysis
Q1 results showed a slight decline in net sales, driven by a 5.7% drop in volumes, particularly in the AAON Coil Products and Basics segments, which saw sales declines of 27.4% and 9.3% respectively. These declines were largely attributed to the timing of backlog conversion and operational disruptions from ongoing facility expansions. However, gross profit margin expanded to 35.2% (up from 29% YoY), reflecting effective price-cost management and moderating material inflation, even as labor costs rose.
SG&A expenses increased as a percentage of sales, reaching 17.3%, a function of lower volumes, higher compensation, and incremental technology and legal investments. Cash flow from operations surged to $92.4 million, enabling AAON to pay down its line of credit and finance capex and dividends without increasing leverage. The balance sheet remains debt-free, supporting continued investment in capacity and growth initiatives.
- Backlog Dynamics: Total backlog increased for the second consecutive quarter, with Basics now contributing 20% of bookings, up from 10% of revenue last year.
- Segment Divergence: AAON Oklahoma remained stable, while Coil Products and Basics experienced short-term disruption but retained strong order pipelines.
- Parts Growth: Aftermarket parts sales grew 10%, reflecting normalized supply chains and steady end-market demand.
Management expects volume comps to improve in the second half, with much of the pent-up demand converting as capacity expansions in Redmond and Longview come online and operational disruptions subside.
Executive Commentary
"Our engineering and sales teams are executing at a first-class rate. All the feedback we are receiving from our customers leads us to believe we are in the midst of becoming the best-in-class solutions provider for both airside and liquid cooling applications."
Gary Fields, Chief Executive Officer
"Volumes were down 5.7%, partially offset by pricing, which contributed 4.3%. The decline in volumes were driven by the Aon Coil products and basic segments, which realized total sales declines of 27.4% and 9.3% respectively. Both segments had strong backlogs entering the quarter compared to a year ago, so the revenue declines at both were largely based on timing of backlog conversions."
Rebecca Thompson, Chief Financial Officer and Treasurer
Strategic Positioning
1. Data Center Expansion as Structural Growth Lever
AAON’s Basics segment is rapidly evolving into a data center solutions provider, now accounting for 20% of bookings. The company’s engineering-led approach to custom airside and liquid cooling systems positions it as a preferred partner for hyperscale and AI-driven data center projects. Management expects this vertical to drive outsized growth and margin expansion as the pipeline materializes over the next several years.
2. Refrigerant Transition as Competitive Advantage
AAON is ahead of industry peers in offering a full portfolio of low-GWP refrigerant equipment, with pricing and cost parity to legacy R410A systems. The company expects a surge in last-minute R410A orders before the regulatory cutoff, followed by accelerated adoption of its next-generation products. Internal manufacturing of new safety devices further enhances margin resilience.
3. Capacity Investments to Unlock Backlog Conversion
Ongoing expansions in Redmond and Longview, Texas will increase manufacturing square footage by 15%, with anticipated revenue capacity gains exceeding that figure due to scale and mix shift. On-time completion of these projects is critical to realizing second-half growth and meeting data center demand.
4. Electrification and Heat Pump Leadership
AAON’s early lead in fully electric, cold-climate heat pump rooftop units positions it to capitalize on building decarbonization trends and new DOE initiatives. The company’s Alpha Class products are expected to attract national accounts seeking turnkey electrification solutions.
5. Channel Consolidation and Aftermarket Strength
Consolidation among channel partners and enhanced support services (parts, marketing, service) are driving improved sales execution and deeper market penetration, particularly as supply chain normalization boosts aftermarket parts growth.
Key Considerations
This quarter’s results underscore the importance of execution on capacity and backlog conversion as AAON pivots toward higher-growth verticals and regulatory-driven product cycles.
Key Considerations:
- Timing of Backlog Conversion: Delays from construction and customer project schedules will impact revenue recognition until Q3, making second-half execution pivotal.
- Data Center Pipeline Visibility: The scale and pace of data center orders will determine the magnitude of Basics’ growth and the company’s long-term mix shift.
- Refrigerant Regulatory Cutoff: Surge in R410A orders expected by late summer could create short-term volatility and operational complexity.
- SG&A Leverage: Elevated SG&A as a percent of sales highlights the need for volume recovery to restore operating leverage.
Risks
Execution risk remains high as AAON juggles major facility expansions, customer-specific engineering projects, and a looming refrigerant transition. Any delays in capacity ramp or supply chain disruptions could push backlog conversion further out, impacting near-term financials. Regulatory changes, competitive responses to refrigerant and electrification trends, and macroeconomic headwinds (interest rates, construction activity) also pose potential challenges to growth and margin targets.
Forward Outlook
For Q2 2024, AAON guided to:
- Sales comparable to Q2 2023
- EPS modestly down year-over-year
For full-year 2024, management maintained guidance:
- Volume: down low single digits to flat, with improvement expected in the second half
- Gross margin: up year-over-year
- SG&A: up 50 to 100 basis points as percent of sales
- CapEx: $125 million
Management highlighted several factors that will shape results:
- Backlog conversion and capacity completion timing are key to second-half growth
- Refrigerant regulatory cutoff in late summer could drive a wave of orders and operational volatility
Takeaways
AAON’s Q1 shows a business in transition, with near-term softness masking strategic positioning for secular growth in data center and electrification markets.
- Backlog and margin resilience offset volume dip: The company’s ability to expand gross margin and maintain a robust backlog positions it well for a second-half rebound, provided capacity projects stay on track.
- Data center and refrigerant transition are structural tailwinds: Basics’ growing share of bookings and readiness for regulatory change support a positive long-term outlook, but require operational discipline to realize potential.
- Investors should monitor capacity ramp and regulatory-driven order flow: Successful execution in these areas will determine whether AAON can accelerate growth and gain share in evolving end markets.
Conclusion
AAON’s Q1 2024 results reflect a business managing through temporary operational headwinds while laying the groundwork for long-term growth in data center and electrification markets. Execution on capacity expansion and regulatory transition will be decisive for the year’s trajectory.
Industry Read-Through
AAON’s experience highlights the sector-wide impact of data center expansion and refrigerant regulation on HVAC manufacturers. The shift toward custom engineering and liquid cooling solutions for AI and cloud infrastructure is reshaping product mix and capital allocation across the industry. Peers lagging in refrigerant transition or electrification readiness risk margin compression and lost share as regulatory deadlines approach. Capacity investments and channel consolidation are emerging as key differentiators for HVAC suppliers aiming to capture secular growth and navigate cyclical volatility.