Job Type	Lens	Gross Margin	Primary Pricing Mechanic	Source Stack
Service Calls & Repair Single-visit billable work · demand-priced emergency premium · labor-dominant cost structure	Margin Core	50-60%	Demand-priced; flat-rate or T&M with markup	Breakwater · ACCA · Limbach ODR validation
Maintenance Agreements (PM) Recurring contracted preventative work · 93%+ retention is MSCA's identified best practice (2025, unchanged from 2022) · 3-5% is MSCA's most common renewal increase band (2025, Q30, n=135)	Access Engine	50-60%	Contract-priced; feeds follow-on service work (see Section 04)	Breakwater (bundled with service, see note) · MSCA
Retrofit & Equipment Replacement Defined-scope project work · existing-building access · driven by PM pipeline · gross-margin range is a TradeSworn estimate, not directly sourced (see note below)	Margin Bridge	35-45%*	Project-priced; scope-bounded change orders	TradeSworn estimate, positioned between Breakwater's two sourced bands
Light Commercial Installation New-equipment install at existing buildings · materials-heavy · GC or owner direct	Neutral	25-35%	Bid-priced; markup-on-materials dominant	Breakwater (direct quote) · Limbach GCR validation
Large New Construction Adjacent Multi-month bid work via GC · cyclical demand · acquirers limit exposure to 20-30% of revenue (PKF) · gross-margin range is a TradeSworn estimate, not directly sourced (see note below)	Strategic Capacity	15-25%*	Bid-priced; competitive RFP · change-order risk	TradeSworn estimate placed below the installation band; ACCA/Grandy reports 3-5% net profit for this category, a different metric — no source reports this category's gross margin
Blended Commercial Reference Range Four sources of differing scope and scale · illustrative range, not a statistically pooled composite	Composite	~19-26%	Directional range across four differently-scoped sources	CFMA 22.4% (Specialty Trades) · Limbach 26.2% · Comfort Systems 24.1% · EMCOR 19.3%

TradeSworn synthesis · Job-type ranges triangulated across Breakwater M&A 2026, ACCA / Tom Grandy, and Limbach Holdings 10-K segmented disclosure. The "Blended Commercial Reference Range" row is a TradeSworn illustrative range spanning four sources of very different scope and scale (a broad multi-trade specialty survey plus three public companies from $647M to $17.0B in revenue) — not a statistically pooled composite. Individual figures sourced directly from CFMA 2025, Limbach 10-K (fiscal 2025), Comfort Systems USA 10-K (fiscal 2025), and EMCOR Group 10-K (fiscal 2025). This table shows gross margin only; TradeSworn does not publish a net-profit column here because no source or calculation supports a specific net-profit conversion for a $3M-$30M commercial HVAC shop by job type. Sourcing precision by row: Breakwater directly states two gross-margin figures — "service and maintenance work typically generates 50-60% gross margins compared to 25-35% on installation work" — and this table applies that 50-60% figure to both Service Calls & Repair and Maintenance Agreements, since Breakwater does not report them separately. The rows marked with an asterisk are TradeSworn estimates, not figures stated in any cited source: Retrofit & Equipment Replacement (35-45%*) is positioned between Breakwater's two sourced bands, while Large New Construction (15-25%*) is a judgmental estimate placed below the general installation band, informed directionally by ACCA/Grandy's separate net-profit commentary (service 15-20%, replacement 10-12%, large commercial new construction 3-5% net profit — a different metric than gross margin, and no cited source reports this category's gross margin). The "35 percentage points" headline spread is a TradeSworn-derived calculation, not a figure stated in any cited source — it is the maximum endpoint spread between Breakwater's two directly sourced figures (60% service/maintenance ceiling minus 25% installation floor = 35 points), not a rough or representative average, and it does not depend on the two estimated rows.

The mix shift is not theoretical. Limbach Holdings, a SEC-filed pure-play commercial mechanical contractor with $646.8M revenue in fiscal 2025, reports 26.7% gross margin on its Owner Direct Relationships (ODR) segment and 24.5% on its General Contractor Relationships (GCR) segment, consolidated 26.2%. ODR covers owner-direct maintenance, service, and capital/specialty project work together, not service calls alone; GCR covers new construction and renovation work awarded by general contractors. ODR's own margin actually compressed year over year (31.2% to 26.7%) on the impact of recent acquisitions, while GCR's margin improved (21.1% to 24.5%) on selectivity — the structural pattern still holds (ODR outperforms GCR on a consolidated basis), and Limbach continued shifting mix toward ODR, now 75.1% of revenue, up from 66.6% in fiscal 2024. Its segmented disclosure gives the market a public view into the same service-versus-project pattern smaller commercial contractors see in practice. A $10M shop cannot copy Limbach's scale. It can copy the operating logic.

Operator Translation

What this means on Monday morning

Take an $8M shop. Move technician hours out of low-bid install work and into service, repair, and well-scoped retrofit. A 6-point lift in blended gross margin pulls in roughly $480,000 of additional gross profit before overhead. A 10-point lift pulls in roughly $800,000.

This is a mix-and-pricing lever, not a capacity-expansion plan: discipline on which jobs get quoted, which jobs get scheduled, which jobs get declined, and which customers earn your best technician hours. TradeSworn has not modeled the truck count, headcount, or utilization needed to execute this shift; treat it as a directional target, not a guarantee that existing capacity absorbs it unchanged.

Illustrative construct · Modeled at $8M revenue as a simple point-of-margin-times-revenue calculation, before overhead absorption. Per-shop results vary with overhead structure, technician productivity, pricing discipline, and customer concentration.

Institutional Reference Points: What the Available Sources Report

CFMA 2025 Benchmarker · Limbach Holdings 10-K · Comfort Systems USA 10-K · EMCOR Group 10-K · Four anchors of differing scope and scale, not a single floor or benchmark

Source	Fiscal Year	Gross Margin	Sample / Scope
CFMA 2025 Construction Financial Benchmarker Construction Financial Management Association · widely used construction-industry financial benchmarking survey	2024	22.4%	Specialty Trades segment (plumbing/HVAC, electrical, and other building-equipment trades), roughly 42% of CFMA's 1,558-company total screened sample; exact Specialty Trades N not separately disclosed. All-companies net income before taxes 7.7%; Best-in-Class (top 25% by composite ranking) 14.2%. Revenue/FTE $320,661.
Limbach Holdings (NASDAQ: LMB) Form 10-K SEC-filed · pure-play commercial mechanical · $646.8M revenue · ODR/GCR segmented disclosure	2025	26.2%	Consolidated. ODR (owner-direct: service, maintenance, and capital/specialty projects) 26.7%; GCR (GC-routed new construction/renovation) 24.5%. ODR mix 75.1% of revenue, up from 66.6%. ODR margin compressed year-over-year on acquisition impact; GCR margin improved on selectivity.
Comfort Systems USA (NYSE: FIX) Form 10-K SEC-filed · $9.1B revenue · 73.3% mechanical/electrical construction segment · large pure-play commercial MEP contractor	2025	24.1%	Blended consolidated, up from 21.0% fiscal 2024. Technology/data-center work represented 45% of 2025 end-market revenue mix. TradeSworn treats the link between that mix and the margin increase as directional; we did not locate an explicit management statement attributing the margin gain specifically to technology/data-center mix.
EMCOR Group (NYSE: EME) Form 10-K SEC-filed · $16.99B revenue · diversified specialty contractor · 72% construction (approx. 42% US mechanical / 30% US electrical of total revenue), 21% building services, 7% industrial	2025	19.3%	Blended consolidated; lower headline reflects a diversified portfolio across construction, building services, and industrial, not a commercial-HVAC-specific figure. Reporting on the year attributes the margin gain to improved revenue mix and project execution. US Mechanical Construction and Facilities Services segment operating margin was 12.8% for fiscal 2025 (vs. 12.5% fiscal 2024), on segment operating income of $905.3M; this is an operating-margin figure, not a gross-margin figure, and is kept distinct from the 19.3% consolidated gross margin above.

Directly sourced (figures) / TradeSworn synthesis (cross-source range) · CFMA 2025 Construction Financial Benchmarker, Executive Summary · Limbach Holdings, Inc. Form 10-K for fiscal year ended December 31, 2025 · Comfort Systems USA, Inc. Form 10-K for fiscal year ended December 31, 2025 · EMCOR Group, Inc. Form 10-K for fiscal year ended December 31, 2025.

Four sources, four different sample sizes, methodologies, and scopes — a useful directional range, not a single statistically pooled benchmark. Commercial specialty trade and mechanical-contractor gross margin clusters roughly between 19% and 26% (exact observed span: 19.3% to 26.2%) across this data, with EMCOR's diversified portfolio at the low end and Limbach's pure-mechanical consolidated figure at the high end. TradeSworn treats this as a directional reference range: shops running well below it are worth examining for pricing or mix problems, and shops running above it are worth examining for what's working, but no cited source establishes a specific "underpriced" threshold. Two of three public-company filings explicitly attribute margin change to revenue mix in their own words: EMCOR reporting on the year cites "a more favorable revenue mix" alongside project execution, and Limbach demonstrates the same pattern through its strategic ODR mix shift to 75.1% of revenue in fiscal 2025 (even as ODR's own margin compressed on acquisition impact). Comfort Systems' mix attribution is TradeSworn's interpretation of a reported end-market shift, not a located management statement. The CFMA 22.4% Specialty Trades figure remains the broadest, most cross-industry reference point in this set — it is not commercial-HVAC-specific. The chart in Section 01 shows where the upside lives.

Why the Spread Exists: Four Structural Mechanisms

The economics behind the chart · why service margin clears 50%+ while bid work compresses to 25-35% · TradeSworn synthesis

Mechanism 01

Labor-to-Materials Mix

Service calls run overwhelmingly on labor, with materials a small share of the job cost. Installations flip the ratio: materials carry a much larger share of the job cost, with labor in support. Labor is whatever you price against your fully-loaded truck cost. Materials are whatever your supply-house markup tolerates before the customer calls another shop. Labor-heavy work tends to deliver more margin per hour because the markup engine you control is bigger. (TradeSworn's operating estimate, not a figure from a cited source.)

Mechanism 02

Scope Predictability

A service call is one problem, one fix, one ticket, billed and closed inside a single visit. An installation is a multi-week scope with many interdependent line items, any of which can surprise you on install day. Scope variance produces margin variance. Every unexpected site condition on a bid job comes out of your margin, with no easy recovery path before the project closes.

Mechanism 03

Pricing Power

You price a Saturday-at-3AM emergency service call against urgency, with the building owner's tolerance for downtime as your ceiling. You price a new-construction install against two other contractors the GC got quotes from. The first conversation builds margin in. The second conversation strips margin out before you ever pick up a wrench.

Mechanism 04

Change-Order Economics

On service work, every scope change opens a new ticket at full margin. On installation, every scope change opens a change-order negotiation with a GC who already has a contract, a budget, and a timeline locked. Change orders on bid work get fought, often into discount territory. Change orders on service work get billed at the same rate as the original visit.

TradeSworn synthesis · Mechanisms are TradeSworn's operating interpretation, informed by Breakwater M&A 2026 margin commentary, MSCA 2025 Benchmark Survey operational data, and ACCA 2025 Contractor of the Future Study pricing-discipline findings. None of these sources states these four mechanisms as such.

The Contrarian Finding: Service Calls Outrank PM Agreements

MSCA 2025 Benchmark Survey, n=268 respondents (of 323 total survey participants)

percent

Of commercial mechanical service contractors named Service Calls their most profitable offering

Directly sourced
MSCA's 2025 Benchmark Survey asked 268 respondents to identify their single most profitable service offering — a perception ranking, not a measured margin comparison. Service Calls ranked first at 34%. Repairs came second at 27%. Special Projects (retro-install) third at 25%. PM Agreements ranked fourth at 14%. This challenges the common framing of PM agreements as the automatic margin engine of a commercial HVAC shop.

TradeSworn synthesis
The PM contradiction is the point. Maintenance agreements can look like a 50%+ gross-margin line on paper, but they do not automatically rank as the highest-profit work in operator perception. TradeSworn frames PM as an access mechanism, not automatically the margin engine. The agreement is what gets you in the building; the work that flows out of the agreement is what carries the margin home. PM underperforms when it is underpriced, over-serviced, poorly renewed, or never converted into repair and retrofit work. PM outperforms when it protects access to the building and feeds a steady stream of demand-priced service and repair. On MSCA's Q26 (n=218, a forced choice among four preset ratio bands: 1:1, 2:1, 3:1, 4:1), 2:1 was the most commonly selected answer (38.5% of respondents), followed by 3:1 (29.8%). This is a self-reported estimate among preset options, not a measured, universal multiplier.

TradeSworn synthesis
Limbach's public filings show a comparable mix shift at scale. ODR revenue jumped 40.6% to $485.7M in fiscal 2025, lifting ODR mix to 75.1% of total revenue, even as ODR's own segment margin compressed (26.7% vs. 31.2% prior year) on acquisition impact while GCR's margin improved (24.5% vs. 21.1%) on selectivity. A $10M private shop cannot copy Limbach's scale, but it can copy the operating logic: protect access, control mix, let service carry the margin.

Directly sourced (Q10 and Q26 figures) / TradeSworn synthesis (Access Engine framing and interpretation) · MSCA 2025 Benchmark Survey, Mechanical Service Contractors of America. Q10 (most profitable service offering, n=268) and Q26 (additional work generated per PM dollar, n=218, forced choice among four preset ratios). Survey conducted 2025; published November 2025. Respondents are commercial mechanical service contractors of varying revenue size ($1.5M to $100M+); a minority of respondents (16.1% on Q1) also perform residential work, a limitation worth noting for a page scoped to commercial HVAC.

"Your job mix decides what the year is worth. Same revenue. Same shop."

Tim Morgan · TradeSworn Co-Founder · Q2 2026

Mix Math: Same Revenue, a 10-Point Gross Margin Gap

Illustrative construct · revenue-mix splits are TradeSworn assumptions; margin midpoints are drawn from Breakwater M&A 2026's reported ranges

Shop A · Install-Heavy Lower Margin Profile

Revenue$8.0M

Mix · Installation70%

Mix · Service & Repair20%

Mix · Maintenance Agreements10%

Blended Gross Margin37.5%

Gross Profit Dollars$3.00M

Shop B · Service-Optimized Higher Margin

Revenue$8.0M

Mix · Installation30%

Mix · Service & Repair45%

Mix · Maintenance Agreements25%

Blended Gross Margin47.5%

Gross Profit Dollars$3.80M

Illustrative construct · Revenue-mix splits (70/20/10 and 30/45/25) are TradeSworn illustrative assumptions, not observed shop data. Margin midpoints applied: service/maintenance 55% gross, installation 30% gross, drawn from Breakwater M&A 2026's reported 50-60% and 25-35% ranges. Math: Shop A = 70%×30% + 20%×55% + 10%×55% = 37.5% blended margin ($3.00M gross profit on $8.0M revenue). Shop B = 30%×30% + 45%×55% + 25%×55% = 47.5% blended margin ($3.80M gross profit). TradeSworn does not convert this gross-profit comparison into an EBITDA or enterprise-value estimate here — doing so would require a specific, disclosed overhead assumption for each shop, which we have not sourced. Individual shop economics vary by overhead structure, geography, and operational discipline.

At the same modeled $8.0M revenue, the disclosed mix assumptions produce a 10-percentage-point gross-margin difference between Shop A and Shop B. The only input that changed between the two models is revenue mix; trucks, headcount, utilization, and overhead are not modeled here and are not held constant or varied — they are simply out of scope for this gross-profit comparison. That 10-point gap is worth $800,000 of additional gross profit per year, before overhead. TradeSworn does not carry this through to an EBITDA or enterprise-value figure on this page — that conversion needs a disclosed, matched overhead and operating-capacity assumption for both shops, which we do not have. For how gross margin and EBITDA margin tiers relate to exit multiples, see Section 06 and the companion Exit & Valuation Benchmark. Same modeled revenue. Same disclosed mix inputs. Different gross profit.

Where This Connects to Exit Value

This page does not publish a margin-tier-to-multiple table. See the companion Exit & Valuation Benchmark for that bridge, sourced separately.

This page does not publish a gross-margin-to-EBITDA-margin or margin-to-multiple table. No source cited anywhere in this benchmark ties a specific commercial-HVAC gross-margin percentage to a specific EBITDA-margin percentage or exit multiple, and a prior draft of this section reproduced tiers and multiple bands that did not match the underlying sources closely enough to publish. A stronger job mix supports a stronger earnings profile, and a stronger earnings profile tends to expand the buyer pool and the multiple a buyer will pay — that relationship is directional only. TradeSworn's separately sourced EBITDA-margin tiers, multiple bands, and closed-deal data live in the companion 2026 Commercial HVAC Exit & Valuation Benchmark. That companion page has not itself been through this audit process; treat its figures with the same scrutiny applied here before relying on them.

Three Levers That Move Your Margin Tier

Operator levers TradeSworn associates with stronger gross margin · informed by CFMA, MSCA, and ACCA data

↑ Adds Margin · The Access Lever

Maintenance Agreement Density (Access Engine)

Directly sourced
PM agreements ranked fourth of four in MSCA's survey of which service line contractors consider most profitable — a perception ranking, not a measured margin comparison. TradeSworn synthesis
The agreement can still support the multiple, because MSCA respondents most commonly selected a 2:1 ratio (self-reported, n=218, among four preset options) when asked how much additional service and repair work a PM dollar tends to generate. Illustrative construct
Applying that self-reported ratio hypothetically: a shop with 500 active PM agreements producing $1M of direct PM revenue, at a 2-3x follow-on ratio and 55%+ gross margin on that follow-on work, would see roughly $1.1-$1.65M of additional gross profit beyond the agreement line itself. This is a hypothetical calculation built on self-reported survey data, not an observed result. Limbach's public filings show a comparable mix shift at scale: ODR is now 75.1% of revenue in fiscal 2025, up from 66.6% the year prior, even as ODR's own margin compressed on acquisition impact. Shops that price PM purely as a revenue line miss the access architecture; shops that price it as access capture more of the follow-on work.

Directional impact Can support several points of blended gross margin when the PM base is large enough to feed steady service and repair work MSCA 2025 Q26 data (self-reported, n=218)

↑ Adds Margin · The Discipline Lever

Job-Cost Visibility Before Closeout

Directly sourced
CFMA 2025 reports a 6.5-point gap between Specialty Trades Best-in-Class firms (14.2% net income before taxes, top 25% by composite ranking) and the segment's all-companies aggregate (7.7%). TradeSworn synthesis
CFMA does not identify what drives that gap. TradeSworn's operating view is that real-time job-cost visibility — reviewing labor burn and material variance weekly, while the job is still open — is a plausible contributor, based on what separates well-run shops in our own experience, not a CFMA finding.

Directional impact Best-in-Class runs 6.5 points higher net income before taxes than the segment aggregate CFMA 2025

↑ Adds Margin · The Pricing Lever

Job-Mix Discipline at Intake

Directly sourced
ACCA's 2025 Contractor of the Future Study (1,000+ contractors) found contractors using flat-rate pricing on service calls report 7% average net profit versus 4% for contractors using other pricing methods — a reported association, not a controlled causal study. Mix discipline shows up in revenue allocation and in hour allocation: the technician assigned to a service call generates margin at one rate, the same technician on a low-bid installation at another.

Directional impact 7% vs. 4% reported net margin association, flat-rate vs. other pricing ACCA 2025

Where the Chaos Job Lives: The Five-Bucket Framework

Margin discipline starts at intake, before the job hits the schedule · TradeSworn framework · five buckets, five default margin expectations

Anchor · Premium

Anchor

55%+

Recurring service work at high-trust accounts. Emergency repair calls from established PM customers. The shop knows the building, owns the labor rate conversation, and gets paid in days.

Core · Target

Core

45-55%

Bread-and-butter service and repair. Well-scoped retrofit work for known clients. The bulk of the margin engine for a commercial shop running discipline at intake.

Neutral · Market

Neutral

30-45%

Standard installation work. Light retrofit. Margin is fair, scope is defined, and the work runs to plan when intake controls hold.

Relationship · Strategic

Relationship

20-30%

Low-margin work taken deliberately to preserve a key customer relationship. Sometimes correct. Frequently overused. The bucket where well-meaning sales discipline collapses.

Chaos · Discount Zone

Chaos

<20%

Under-scoped bids. Misquoted projects. Cyclical new-construction work taken to fill calendar. Every chaos job consumes capacity that Anchor and Core jobs needed.

TradeSworn synthesis · The five-bucket framework is detailed in TradeSworn's Margin Erosion analysis. Default margin ranges anchor to the job-type benchmarks in Section 01. This is a TradeSworn operating framework, not a directly sourced industry standard.

Every chaos job your shop accepts is a Core or Anchor job your best technicians did not run that week. Margin presents as a pricing problem at month-end. The root sits earlier, in scheduling and sales discipline. Fix mix at intake, before the job hits the schedule, and gross margin moves on its own. The bucket a job sits in at intake goes a long way toward determining the margin it produces at closeout.

Operational Read

Cash Flow Health Scorecard

Score your shop's billing speed, margin discipline, and operational rhythm against MSCA 2025 benchmarks. One-minute diagnostic, no sign-up required.

Run the Scorecard

Margin Execution

Financial Workplan

A structured Workplan to move blended gross margin into the next tier band. Built around the three levers in Section 07.

See the Workplan

Exit Read

2026 Exit & Valuation Benchmark

Where margin maps to multiples. EBITDA multiples by profile, deal structure, and the eight value drivers built from closed commercial HVAC deals.

See the Benchmark

Methodology & Source Disclosure

This benchmark was produced by TradeSworn, LLC, synthesizing publicly available institutional financial data, SEC-filed company disclosures, and industry survey research focused on commercial HVAC and the broader specialty trade segment. TradeSworn did not conduct primary surveys or collect proprietary financial data for this report. Figures in this report fall into three categories: findings reported directly by cited sources, TradeSworn-derived synthesis, and illustrative or judgmental estimates. Each category is identified at the point of use. In Section 01, three displayed job-type rows apply two gross-margin bands quoted from Breakwater M&A: 50-60% for service and maintenance and 25-35% for installation. The Retrofit and Large New Construction rows are TradeSworn estimates.

Scope: Commercial HVAC contractors, $3M-$30M annual revenue, United States, primarily 2024-2025 financial data with 2026 transaction context. Where sources blend residential and commercial mechanical work, this report uses commercial-leaning interpretation and labels synthesis explicitly. The CFMA Benchmarker's Specialty Trades segment includes mechanical, electrical, and other building equipment trades and is roughly 42% of CFMA's 1,558-company total screened sample (exact Specialty Trades N not separately disclosed); it is a cross-industry reference point, not a commercial-HVAC-specific figure. MSCA's 2025 Benchmark Survey (n=323, with 268 answering the most-profitable-offering question and 218 answering the PM-multiplier question) is a practitioner survey of commercial mechanical service contractors; a minority of respondents also perform residential work.

Limitations: Private commercial HVAC contractor financials are inherently incomplete. Two of the five job-type gross-margin bands (Service Calls & Repair / Maintenance Agreements, and Light Commercial Installation) are quoted directly from Breakwater M&A's advisory research; the other two (Retrofit & Equipment Replacement, Large New Construction) are TradeSworn estimates, not figures stated in any cited source, and are marked with an asterisk throughout. SEC filings provide directional context on business mix and public-company margins; they do not independently validate these private-company job-type ranges. Individual shop economics depend on overhead structure, geography, technician productivity, customer mix, and pricing discipline. This report models gross margin and gross profit only; it does not model or assert truck counts, headcount, technician utilization, or overhead structure for the illustrative shops in Section 05. This report is for educational and media purposes. Consult qualified CPA and operational advisors before making financial or strategic decisions. All source data is independently verifiable at the publications cited and linked.

Construction note: Section 01 job-type ranges and the Section 05 mix-math comparison are TradeSworn directional constructs, cross-calibrated across the sources listed, and tagged accordingly. Section 02 institutional data is sourced directly, with the cross-source range explicitly labeled as TradeSworn synthesis rather than a pooled statistic. Section 04's Q10 and Q26 figures are sourced directly from MSCA's published 2025 Benchmark Survey results; the Access Engine framing and any dollar extrapolations built on Q26 are TradeSworn synthesis or illustrative constructs. Section 06 does not assert a gross-margin-to-EBITDA-margin conversion; that bridge lives in the companion Exit & Valuation Benchmark.

Source Stack

CFMA 2025 Construction Financial Benchmarker, Executive Summary · Construction Financial Management Association · fiscal 2024 data, 1,558 companies screened across all contractor types (Specialty Trades ≈42% of that sample) · Specialty Trades segment gross margin 22.4%; all-companies net income before taxes 7.7%; Best-in-Class (top 25% by composite ranking) net income before taxes 14.2%. The 8.8% EBITDA margin figure reported elsewhere in the survey is an all-companies, all-segments blended figure, not Specialty-Trades-specific.

Limbach Holdings, Inc. (NASDAQ: LMB) 10-K, fiscal year ended Dec 31, 2025 · SEC-filed pure-play commercial mechanical · Revenue $646.8M; consolidated gross margin 26.2%; ODR 26.7% (down from 31.2%); GCR 24.5% (up from 21.1%); ODR 75.1% of revenue, up from 66.6%. ODR covers owner-direct service, maintenance, and capital/specialty project work, not service calls alone.

Comfort Systems USA, Inc. (NYSE: FIX) 10-K, fiscal year ended Dec 31, 2025 · SEC-filed · $9.1B revenue; 24.1% gross margin (up from 21.0% in 2024); Technology end-market 45% of 2025 revenue mix. Mix-to-margin causation is TradeSworn's interpretation, not a confirmed management statement located in this review.

EMCOR Group, Inc. (NYSE: EME) 10-K, fiscal year ended Dec 31, 2025 · SEC-filed · $16.99B revenue; 19.3% consolidated gross margin; diversified across construction (approx. 42% US mechanical / 30% US electrical of total revenue), building services, and industrial. Reporting on the year cites improved revenue mix and project execution. US Mechanical Construction and Facilities Services segment operating margin 12.8% fiscal 2025 vs. 12.5% fiscal 2024, on segment operating income of $905.3M — an operating-margin figure, kept distinct from the 19.3% consolidated gross margin.

MSCA 2025 Benchmark Survey · Mechanical Service Contractors of America · n=323 commercial mechanical service contractors · Q10 (most profitable offering, n=268): Service Calls 34%, Repairs 27%, Special Projects 25%, PM Agreements 14% · Q26 (additional work per PM dollar, n=218, forced choice among four preset ratios): 2:1 most common (38.5%), 3:1 next (29.8%), 1:1 (16.5%), 4:1 (15.1%).

ACCA 2025 Contractor of the Future Study · Air Conditioning Contractors of America with Farmington Consulting Group · 1,000+ HVACR contractors · flat-rate service pricing associated with 7% net vs. 4% for other pricing methods; marketing spend ≥12% of revenue associated with 9% net vs. 5%.

ACCA / Tom Grandy, "How Much Profit Should A Company Make?" · Service department net 15-20% (flat-rate 20-25%); replacement net 10-12%; large commercial new construction net 3-5%. Published July 2022.

Breakwater M&A, "HVAC Business Valuation: 2.5x-10x Multiples in 2026" · Used directionally as practitioner/advisory M&A research, not an institutional measurement source. Direct quote: service/maintenance 50-60% gross vs. install 25-35%; deal structure norms; recurring revenue valuation premium.

PKF O'Connor Davies Investment Banking, "US HVAC M&A Industry Update, Summer 2025" · Commercial HVAC services consolidation early-stage (residential is midway); transaction multiples reported north of 10x EBITDA for high-margin, high-service-component businesses; 20-30% new-construction revenue cited as an acceptable threshold for standalone acquisitions. Note: PKF's 30%+ gross margin / 15%+ EBITDA margin "premium positioning" thresholds are stated for the HVAC distribution segment, not HVAC service/installation contractors.

TradeSworn, "2026 Commercial HVAC Exit & Valuation Benchmark" (companion benchmark) · EBITDA multiples and deal structure across Axial, PKF, Breakwater, First Page Sage. Cross-referenced from Section 06 for readers who want a margin-to-multiple analysis; this page publishes no such framing itself, and the companion page has not been through this audit process.

For reprint, citation, or media inquiries: tradesworn.com · © 2026 TradeSworn, LLC. All rights reserved. May be cited with attribution to TradeSworn 2026 Commercial HVAC Gross Margin Benchmarks by Job Mix.

Gross MarginBenchmarks

What this means on Monday morning

Of commercial mechanical service contractors named Service Calls their most profitable offering