HVAC Stocks

Mechanical climate control providers engineer and maintain the essential thermal management infrastructure required for commercial, residential, and high-density industrial environments. Revenue models center on high-margin aftermarket services, replacement cycles driven by energy efficiency mandates, and specialized components for air filtration and fluid handling.

As of Oct 23, 2026, HVAC has 37 US-listed companies worth $629B combined. The median member moved -1.0% over the past week; TTAN led among the 25 largest at +16.1% and FIX trailed at -19.3%.

Companies in HVAC

TT – Trane Technologies plc, $104B
JCI – Johnson Controls International PLC, $86.6B
VRT – Vertiv Holdings Co, $75.3B
CARR – Carrier Global Corp, $46.4B
FERG – Ferguson Plc, $43.9B
FIX – Comfort Systems USA Inc, $40.9B
SUNB – Sunbelt Rentals Holdings, Inc., $32.3B
EME – EMCOR Group Inc, $29.1B
APG – Api Group Corp, $16.8B
WSO – Watsco Inc, $13.5B
MLI – Mueller Industries Inc, $13.5B
LII – Lennox International Inc, $13B
WTS – Watts Water Technologies Inc, $11.9B
MAIR – Madison Air Solutions Corporation, $11.6B
IESC – IES Holdings Inc, $10.6B
RRX – Regal Beloit Corporation, $9.8B
AOS – Smith AO Corporation, $8.1B
SPXC – SPX Corp, $8B
TTAN – ServiceTitan, Inc. Class A Common Stock, $7.9B
LGN – Legence Corp. Class A Common stock, $7.2B
MOD – Modine Manufacturing Company, $7.1B
AAON – AAON Inc, $6.1B
FTDR – Frontdoor Inc, $5.5B
CSW – CSW Industrials, Inc., $4.8B
TPC – Tutor Perini Corporation, $4.1B
ATMU – Atmus Filtration Technologies Inc., $3.6B
WOR – Worthington Industries Inc, $3.1B
REZI – Resideo Technologies Inc, $2.5B
LMB – Limbach Holdings Inc, $607M
SGU – Star Gas Partners LP, $423M
KWY – Kingsway Corporation, $273M
AIRJ – AirJoule Technologies Corporation, $265M
HDSN – Hudson Technologies Inc, $223M
ENGS – Energys Group Limited Ordinary Shares, $118M
TGEN – Tecogen Inc., $69.4M
CNTM – ConnectM Technology Solutions, Inc., $29.5M
WXM – WF International Limited Ordinary Shares, $11.1M

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