Carrier vs Trane Technologies Q3 2026: both have record HVAC backlogs, but one wrote down $3.1B of Europe

Carrier Global and Trane Technologies are the two biggest pure-play heating, ventilation and air-conditioning (HVAC) makers in the S&P 500, and both reported Q3 2026 results on the same day, Oct 29. Both told a similar top-line story — demand, especially from data centers and large commercial buildings, is running well ahead of what either company can ship — and both raised full-year sales guidance while leaving profit guidance unchanged. Underneath, the reasons their margins aren't keeping pace with demand are different, and one company's results were distorted by a one-time writedown that the other didn't have.

At a glance

• Backlog: both hit records. Carrier's signed-but-undelivered orders topped $8.5B (up ~60%); Trane's reached $12.5B (up 73%, with Americas commercial HVAC backlog up ~80%). Both say this is why they raised sales guidance.
• The reported EPS numbers mislead in opposite directions. Carrier's GAAP result was a $3.16-a-share loss (from a $3.1B Europe goodwill writedown) next to adjusted EPS of $0.87, up 30% — though about half of that 30% came from one-time tariff refunds, not operations. Trane's GAAP EPS rose a clean-looking 25% to $4.79, but about a third of that gain came from a lower tax rate and a smaller share count rather than from the business.
• Both raised sales guidance without raising profit guidance — a sign that incoming revenue is coming in at lower margin than the existing book, at both companies.

Side by side

Why the margins aren't following demand — for different reasons

At Carrier, the Americas segment (54% of sales) is the strongest piece: organic sales up 25%, margin up 250 basis points to 22.2%. But the release itself says that gain came from "the benefit of ~$120 million of IEEPA refunds and organic growth, partially offset by increased input costs and tariffs" — strip out the refund and the Americas margin was about 18.6%, actually below last year's 19.7%. The $3.1B Europe writedown, on the Viessmann heat-pump business Carrier bought in 2024, is a separate, non-cash admission that the unit will earn less than assumed at purchase; it doesn't touch Q3 operations but it is why GAAP results show a loss.

At Trane, there's no one-time writedown and no tariff-refund boost — the margin slip is smaller and comes from different places. Add up Trane's three segments and their combined operating margin was 21.2%, almost flat versus 21.3% a year ago; what actually pulled the company margin down 40 basis points was unallocated corporate expense, which rose 58% to $92.3M, for a reason the release doesn't explain. Gross margin also fell 160 basis points to 35.3%, for a second straight quarter. None of Trane's three segments improved margin: Americas was flat-to-up slightly, EMEA's margin fell 250 bps even as EMEA orders turned positive, and Asia Pacific's margin fell 390 bps.

The EPS lesson, side by side

Both headline EPS numbers need adjusting, but for opposite reasons. Carrier's GAAP EPS looks terrible (a $3.16 loss) only because of the non-cash Europe writedown — the underlying adjusted business grew, just not by the full 30% the adjusted figure shows once tariff refunds are backed out (closer to 15%). Trane's GAAP EPS looks great (+25%) partly because its pretax profit only grew 17.7% — the rest came from a tax rate that fell more than 4 points and a 1.3% smaller share count, neither of which is guaranteed to repeat.

Takeaway: Both companies have more HVAC demand than they can currently convert into matching profit growth — record backlogs, raised sales guidance, flat-to-lower adjusted margins. Carrier's quarter adds a one-time Europe writedown and a one-time tariff-refund tailwind on top of that story; Trane's is cleaner operationally but leans on a lower tax rate that the companies haven't explained and can't be assumed to continue. Whichever one you're watching, the Q4 question is the same: does backlog convert to revenue at margins at or above the company average, or does mix dilute it the way it did again in Q3?

Figures are each company's own, from their Q3 2026 reports: Carrier Global Q3 2026 and Trane Technologies Q3 2026.