Comfort Systems USA, Inc. (FIX) - Stock Analysis

Last updated: Jul 25, 2026

Research Idea

Research content for general circulation. Not individualized advice. Methodology & Disclosures

Excellent operating momentum with sharp Q4 2025 and Q1 2026 revenue/net income growth, strong Q1 free cash flow, record backlog, historically high pipelines, and demand tied to data centers, power, and AI infrastructure.

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Idea window: 4/27/2026 – 5/4/2026Sector: Industrials

AI Analyst Overview

Last Price
$1626.32
Market Cap
$71.53B
1D Return
-6.02%
YTD Return
+74.42%

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Valuation Metrics

P/E
58.5
P/B
25.4
P/S
7.1
EV/EBITDA
41.3
Div Yield
0.11%

Price Behavior

5.0

Key Price Behavior Insights: • Support held • Lower highs • Rebound fading Support Level: $1,674-$1,681 Resistance Level: $1,775-$1,831 FIX has rebounded from $1,674-$1,681 support after a sharp drop over the last month, but the trend remains damaged below $1,775-$1,831 resistance and needs a reclaim of $1,830-$1,865 to turn constructive.

rebound
resistance

Sentiment & News

8.0

Key News Insights: • Record backlog • AI demand • Margin expansion Comfort Systems USA posted record backlog, beat Q2 estimates with revenue above $3 billion, and continues to benefit from AI/data-center demand and margin expansion, though its sharp rally and valuation remain a watchpoint.

AIInfrastructure
ValuationWatch
AI

AI Summary

8.0
Positive

FIX should be viewed less as a generic cyclical contractor and more as a backlog-rich AI/data-center infrastructure beneficiary, with record cash flow and margin expansion suggesting earnings are now being pulled through from already-won work; the key risk is whether this project backlog converts on time and at 17% EBIT margins as sentiment and valuation remain stretched after the strong run.

Backlog
Execution
AIInfra
AI summary updated 3 days ago

Description

Comfort Systems USA, Inc. delivers mechanical and electrical construction and lifecycle services across commercial, industrial, and institutional buildings in the United States, including design, installation, renovation, maintenance, and replacement of MEP systems. Its offerings cover HVAC, plumbing, electrical and fire protection work as well as off-site construction and system controls, serving building owners, developers, contractors, architects, engineers and property managers. The company was founded in 1917 and is headquartered in Houston, Texas.

Idea History

DateCloseTickerCompanySummaryStatusP/L
Apr 27May 4FIXComfort Systems USA, Inc.
Excellent operating momentum with sharp Q4 2025 and Q1 2026 revenue/net income growth, strong Q1 free cash flow, record backlog, historically high pipelines, and demand tied to data centers, power, and AI infrastructure.
Closed+5.5%
Apr 17Apr 24FIXComfort Systems USA, Inc.
Supported by record Q4/full-year 2025 results, a dividend increase, and a backlog that doubled to $12B with strong AI/data-center demand. Management expects continued same-store revenue growth and strong margins, while the stock remains near recent highs after a 13.5% 21-day gain.
Closed+4.6%
Feb 20Feb 27FIXComfort Systems USA, Inc.
Blowout Q4/FY2025 results and dividend hike announced 2026-02-19, record backlog and cash flow, plus ~20% share gain in three weeks with price 12–13% above 21-day SMA create a strong near-term momentum and post-earnings follow-through setup over the next few sessions.
Closed-2.3%
Research content for educational purposes only. Not investment advice. All decisions are your responsibility.