SPX Technologies Q3 EPS up 20% on strong HVAC demand and acquisitions

What happened

SPX Technologies reported third-quarter 2026 adjusted earnings per share of $2.21, up 20% year-over-year and marking the fifth consecutive quarter of adjusted EPS growth above 20%. The company attributed the gains to robust HVAC demand, particularly from data centers, and contributions from recent acquisitions. This supports the underlying thesis that SPX is successfully converting strong backlog into earnings growth, but the report did not resolve questions about HVAC segment margins and the efficiency of capacity expansions. While the earnings trajectory is positive, investors should still verify that organic growth is sustainable and that start-up inefficiencies are being absorbed without diluting profitability. The stock's high valuation leaves little room for operational missteps, so the next few quarters remain critical for confirming the durability of this growth.

Implication

The 20% EPS growth confirms that SPX's data-center cooling demand remains robust, but the heavy reliance on acquisitions for revenue growth introduces integration risk that could obscure organic performance. Investors should monitor the HVAC segment margin closely, as the company previously guided to 24.25%-24.75% for FY2026, and any deterioration would suggest capacity expansion costs are not being offset by higher throughput. With the stock trading at a significant premium to the market, the current price already bakes in flawless execution, leaving little tolerance for any slowdown in backlog conversion or unexpected costs. A prudent strategy is to hold existing positions and wait for either a pullback to more attractive levels or confirmation that margins are stabilizing and organic revenue growth is accelerating. Over the long term, if SPX can sustain this earnings momentum while expanding capacity, the valuation may become justified, but until then, risk-reward remains balanced.

Thesis delta

The core investment thesis remains unchanged: SPX benefits from secular data-center cooling demand and has a large backlog to support growth. However, the Q3 report reinforces the earnings growth trajectory but does not yet address the margin execution concerns that underpin our WAIT rating; we need to see HVAC segment margins hold within guidance and organic growth outpace acquisition contributions before turning more constructive.