Key Stats for Comfort Systems Stock
- Past-Week Performance: -0.6%
- 52-Week Range: $276.4 to $1,500
- Current Price: $1,470.6
What Happened?
Comfort Systems USA (FIX), a national mechanical, electrical, and plumbing contractor that installs and services the infrastructure powering data centers, factories, and commercial buildings, posted Q4 2025 EPS of $9.37, up 129% year over year, as data center construction demand drove quarterly gross margin above 25% for the first time in company history.
On February 19, Comfort Systems reported Q4 revenue of $2.65 billion, beating the IBES consensus of $2.4 billion by 13%, while Q4 net income of $330.8 million nearly doubled the analyst estimate of $242.4 million.
Backlog, the company’s forward order book representing legally committed, priced, and scoped construction contracts, reached $11.94 billion at December 31, up 99.3% year over year, as technology customers, overwhelmingly data center hyperscalers, pushed the segment from 33% to 45% of total FY2025 revenue.
CEO Brian Lane stated on the Q4 2025 earnings call that “backlog increased to a new all-time high of $12 billion, thanks to fantastic bookings in the quarter,” reflecting the October 2025 acquisitions of Feyen-Zylstra Holdings in Michigan and Meisner Electric in Florida, which expanded the company’s electrical contracting footprint.
Modular capacity expansion from 3 million to 4 million square feet by end of 2026, mid-to-high-teen same-store revenue growth guidance, a record $1.04 billion in FY2025 free cash flow, and a dividend raised to $0.70 per share position FIX to compound its data center infrastructure dominance well into the next construction cycle.
Wall Street’s Take on FIX Stock
The record $11.94 billion backlog, legally committed and priced before a shovel moves, converts directly into FY2026 revenue growth of roughly 20.3% to an estimated $10.95 billion, sustaining the EPS compounding cycle that drove FY2025 earnings up 98%.
FY2026 consensus EPS of $36.76, up 27.3% from FY2025’s $28.88, and FY2027 EPS of $44.30, up another 20.5%, rest on a backlog already booked, a modular capacity expansion from 3 million to 4 million square feet underway, and data center technology revenue that grew from 33% to 45% of total revenue in a single year.
Six analysts rate FIX a buy and two rate it a hold, with a mean price target of $1,613.20, implying 9.7% upside from the March 25 close of $1,470.64, as the consensus prices in continued above-market execution on a backlog that has doubled in one year.
The target spread runs from $1,196 on the low end, roughly anchored to execution risk on the modular ramp and a 23% 2026 tax rate headwind, to $1,800 on the high end if hyperscaler demand accelerates the backlog conversion pace into late 2026 and 2027.
What Does the Valuation Model Say?
The TIKR mid-case target of $1,707.57, reached by December 31, 2030, assumes a 12.5% revenue CAGR and a 12.3% net income margin, supported by management’s mid-to-high-teen same-store revenue growth guidance and EBITDA margins expanding from 16.0% in 2025 to an estimated 17.4% by 2027.
The market prices FIX at 40x forward earnings, but the consensus misses that $11.94 billion in committed backlog, twice last year’s level, makes FY2026 revenue largely non-discretionary.
Backlog of $11.94 billion, up 99.3% year over year, against FY2025 revenue of $9.1 billion underwrites the TIKR target of $1,707.57 without requiring a single new contract win in 2026.
CEO Brian Lane confirmed on the Q4 earnings call that the workforce is sized to execute the current backlog without overcommitting, removing the labor bottleneck risk that most bear cases cite.
The TIKR model’s 3.2% annualized IRR to $1,707.57 assumes P/E compression of 3.7% per year; a slower-than-expected modular ramp or a hyperscaler CapEx pause would accelerate that multiple contraction and push the return below model.
Q1 2026 results are the first test: same-store revenue growth in the high-teen range and gross margin holding above 24% would confirm the backlog conversion pace the TIKR model requires.
Should You Invest in Comfort Systems USA, Inc.?
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