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Aaon vs Tecogen: AAON and TGEN compared
Aaon is the larger company: $627M of revenue in its latest quarter (Q2 2026) against $5.7M for Tecogen (Q2 2026). Aaon is growing faster (+101% against -21% a year earlier). Aaon is more profitable, with an operating margin of 11.0% against -37.4%.
Where the money goes: AAON and TGEN
Aaon (AAON) · Q2 2026
Aaon, Q2 2026: revenue $627M (+101% year over year), operating margin 11.0%, net earnings $56.7M, operating cash flow $21.0M. The chart follows the revenue to costs, profit and cash.
Tecogen (TGEN) · Q2 2026
Tecogen, Q2 2026: revenue $5.7M (-21% year over year), operating margin -37.4%, net loss $2.1M, operating cash flow −$2.4M. The chart follows the revenue to costs, profit and cash.
| Aaon (AAON) | Tecogen (TGEN) | |
|---|---|---|
| Latest quarter | Q2 2026 | Q2 2026 |
| Revenue | $627M | $5.7M |
| Revenue growth, Y/Y | +101% | -21% |
| Gross margin | 24.3% | — |
| Operating margin | 11.0% | -37.4% |
| Net earnings | $56.7M | −$2.1M |
| Net margin | 9.0% | -37.3% |
| Operating cash flow | $21.0M | −$2.4M |
| Market value | $4.8B | — |
| P/E | 30.1× | — |
| Analysts’ mean target | $128.50 | — |
Where the revenue comes from
Aaon
- AAON Oklahoma: $262M (42%)
- BasX: $218M (35%)
- AAON Coil Products: $147M (23%)
Tecogen
- Services: $4.4M (76%)
- Products: $1.1M (20%)
- Energy production: $236K (4%)
Questions
Which is bigger, Aaon or Tecogen?
Aaon is the larger company: $627M of revenue in its latest quarter (Q2 2026) against $5.7M for Tecogen (Q2 2026).
Is Aaon or Tecogen growing faster?
Aaon is growing faster (+101% against -21% a year earlier).
Which is more profitable, Aaon or Tecogen?
Aaon is more profitable, with an operating margin of 11.0% against -37.4%.
More: Aaon earnings · how Aaon makes money · Tecogen earnings · how Tecogen makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Aug 10, 2026; 10-Q filed Aug 13, 2026). Fiscal quarters can end on different dates. Not investment advice.