EME vs FIX: How EMCOR Group and Comfort Systems USA Compare (2026)
Last updated August 2026
Short answer
FIX is the larger of the two ($60.88B market cap): the incumbent the market prices for continued execution (28.81x forward earnings, beta 1.66). EME is the smaller challenger ($35.17B), cheaper on forward earnings (22.44x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
EME vs FIX: the tie-breaker metrics
Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | EME | FIX | What it tells you |
|---|---|---|---|
| Market cap | $35.17B | $60.88B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 22.44 | 28.81 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 24.81 | 42.55 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 1.13 | 1.66 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 60% of range | 76% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 8.65 | 94.24 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: EME is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how EME and FIX affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. EME and FIX share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined EME and FIX exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does EMCOR Group (EME) do?
EMCOR Group is one of the largest mechanical and electrical construction service providers in the United States. The company provides design, construction, installation, and service of mechanical, electrical, plumbing, fire protection, and various building infrastructure systems. EMCOR's end markets span commercial buildings, healthcare facilities, education, manufacturing, transportation infrastructure, and increasingly data centers and semiconductor fabs.
What does Comfort Systems USA (FIX) do?
Comfort Systems USA is one of the largest mechanical, electrical, and plumbing (MEP) construction service providers in the United States. The company provides design, installation, and service of heating, ventilation, air conditioning (HVAC), plumbing, electrical, and piping systems for commercial, industrial, and institutional customers. End markets include data centers, semiconductor fabs, life sciences facilities, healthcare buildings, schools, and various other non-residential construction.
EME vs FIX: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- EME drivers: Data center construction; Semiconductor fab and advanced manufacturing.
- FIX drivers: Data center construction; Semiconductor fab buildouts.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Construction cyclicality. For FIX, construction cyclicality.
EME or FIX: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick EME if you believe its drivers more; FIX if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the EME and FIX guides.
EME vs FIX: the full fundamentals
EME. EMCOR trades at a premium to traditional construction contractors but a slight discount to Comfort Systems, reflecting similar end-market exposure with somewhat larger scale and more diversified mix. The multiple has expanded with the AI infrastructure thesis.
FIX. Comfort Systems trades at a premium to traditional construction contractors, reflecting data center end-market exposure and backlog visibility. The multiple has expanded with the AI data center thesis.
Headline figures (approximate, early 2026): EME shows revenue (ttm) ~$15 billion, operating margin ~10% (improving), net income (ttm) ~$1.2 billion, eps (ttm) ~$25.00; FIX shows revenue (ttm) ~$7 billion, operating margin ~11% (improving with mix), net income (ttm) ~$600 million, eps (ttm) ~$17.00.
The bottom line: EME vs FIX
EME and FIX are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined EME and FIX exposure against your real portfolio. It is not an investment adviser.
Wondering how EME or FIX fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in EMCOR Group with AI
Connect the broker you already use and ask Walnut's AI how EME fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between EME and FIX?
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EMCOR Group is one of the largest mechanical and electrical construction service providers in the United States. Comfort Systems USA is one of the largest mechanical, electrical, and plumbing (MEP) construction service providers in the United States. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is EME or FIX the better stock?
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Neither is universally better. FIX is the larger incumbent; EME is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, EME or FIX?
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On forward P/E (as of August 2026), EME trades at 22.44x and FIX at 28.81x, so EME is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both EME and FIX?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of EME vs FIX?
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EME: Construction cyclicality. Hyperscaler AI capex concentration in data center segment. Skilled labor availability constrains capacity to capture demand. Margin pressure during labor inflation periods. FIX: Construction cyclicality. Hyperscaler AI capex concentration creates revenue concentration. Labor availability (skilled trades) constrains capacity to capture demand. Margin pressure during labor inflation periods.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell EME or FIX; figures are approximate and dated (as of August 2026). Verify current data before investing.