Aaon — Key Risks

Backlog Has More Than Doubled, But It Is Not Guaranteed Revenue

AAON's order backlog (confirmed customer orders not yet delivered) grew from $867 million at end of 2024 to $1,828.5 million at end of 2025 — a remarkable jump. However, customers can reduce or cancel orders, sometimes with only modest penalties. If a large portion of that backlog were pulled back, the revenue investors are expecting could fall well short of reality. The size of the backlog also means pricing changes take longer to flow through to actual financial results.

Refrigerant Regulation Is Forcing Costly, Ongoing Product Redesigns

The U.S. EPA required AAON to switch to a new, lower-emissions refrigerant for all equipment manufactured starting January 1, 2025. That transition is already done, but new rules — including a New York State regulation effective 2034 requiring refrigerants with an even lower global warming potential — will demand significant additional research and development. California, Washington, and other states are expected to follow with their own timelines and requirements, creating a patchwork of compliance demands that could raise production costs and complexity considerably.

Tariffs on Materials Could Squeeze Profit Margins

AAON relies on steel, copper, and aluminum — all materials exposed to import tariffs. The current U.S. administration has significantly increased tariffs on goods from China and other countries, and policy uncertainty continues. If input costs rise and AAON cannot pass those increases on to customers, profit margins shrink. The company also locks into non-cancellable supply contracts lasting 6 to 18 months, which limits flexibility if prices move against them.

Most Manufacturing Is Concentrated in One Location

The vast majority of AAON's production happens at its Tulsa, Oklahoma facilities, a region with a well-documented tornado risk. A serious natural disaster, fire, or other disruption there could halt manufacturing operations entirely. Insurance provides some protection, but the filing is explicit that it may not cover all losses, and premiums could rise meaningfully over time.

Sales Depend Heavily on Third-Party Representatives

AAON does not sell directly to all customers — it relies on independent third-party sales representatives to market its products in many areas. Larger competitors with more resources have been actively trying to lock these same representatives into exclusive agreements. If AAON loses key representatives and cannot replace them quickly, revenues in affected regions could drop materially.

A Large ERP System Overhaul Introduces Operational Risk

AAON is in the middle of replacing its core business management software with a new enterprise resource planning (ERP) system. These implementations are notoriously difficult. Delays, cost overruns, or errors during the transition could disrupt financial reporting, internal controls, and day-to-day operations — all at a time when the company's backlog demands smooth execution.