Federal Capture Intelligence

Top DOT plumbing, heating, and air-conditioning contractors (NAICS 238220)

Contract actions: October 1, 2021 – October 23, 2026 Updated October 24, 2026 Department of Transportation agency guide NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors
Latest 12 months
$21.1M
Net obligations · Down $6.5M vs. $27.6M preceding
Prime contractors
57
With positive obligations in the latest 12 months

Research the DOT federal contracting market for plumbing, heating, and air-conditioning under NAICS 238220. Compare top federal contractors and market share, reported contract obligations and spending trends, funding-office attribution, recent award activity, and contract types, competition, and procurement methods.

Contract obligation trends for Plumbing, Heating, and Air-Conditioning Contractors at the Department of Transportation

Federal records show $175.8M in net obligations across 481 awards in Plumbing, Heating, and Air-Conditioning Contractors at the Department of Transportation from Oct 1, 2021 through Oct 23, 2026. This market accounts for 0.39% of $44.6B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations decreased 23.5% from $27.6M to $21.1M. 13 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY27 is year-to-date through Oct 23, 2026; earlier years show complete fiscal-year totals.

FY27 year-to-date: −$27K versus $0 through the same date in FY26 (Not comparable).
Net obligations · complete fiscal yearNet obligations · FY27 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$48.4M274Complete
FY2023$47.1M275Complete
FY2024$31.6M272Complete
FY2025$27.6M229Complete
FY2026$21.2M192Complete

Market at a glance

All reported prime contract awards
All-period net obligations
$175.8M
481 awards · 213 prime contractors
Latest 12-month movement
−23.5%
$21.1M vs. $27.6M
Leading eight prime share
68.4%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
0.39% of $44.6B in agency-wide net obligations.
Set-aside share when reported
63.8% of 458 awards with reported set-aside status.
Set-aside reporting
292 set aside · 166 no set-aside · 23 not reported

What changed in the last 12 months?

Oct 24, 2025–Oct 23, 2026, compared with Oct 24, 2024–Oct 23, 2025.

Competitive shifts

SERGENTS MECHANICAL SYSTEMS INC gained the most market share
13.9%→28.5%+14.6 percentage points
The contractor now ranks #1 by positive obligations, based on 4 reported actions.
WAM INDUSTRIES, INCORPORATED was the largest newly observed contractor
$1.0MLatest 12-month obligations
First observed in this market on Aug 19, 2026, the contractor now ranks #5 by positive obligations across 2 reported actions.

Buyer demand

Reported obligations through 697DCK REGIONAL ACQUISITIONS SVCS decreased
$8.9M→$1.4M−$7.4M
Latest-period activity spans 28 awards across 23 prime contractors.
Reported obligations through FAA increased
$12.0M→$16.5M+$4.5M
Latest-period activity spans 50 awards across 38 prime contractors.
View 4 additional material changes

Market structure

Reported set-aside share decreased
63.2%→45.9%−17.3 percentage points
Of 109 latest-period awards with reported set-aside status, 50 were reported as set-asides.

Competitive shifts

7 contractors were first observed in this market during the latest 12 months
$2.1MLatest 12-month obligations
Contractor-level obligations and first-observed dates appear below. “First observed” applies only to this market and the period shown.
View 7 contractors
ContractorLatest 12 months
APEX MECHANICAL LLC fell the most in the contractor rankings
#6→#56Down 50 places
The contractor accounts for 0.010% of positive obligations across 4 reported actions.

Award activity

How these findings are calculated

Findings are selected from matched-period changes in obligations, share, rank, funding offices, concentration, reported set-asides, material award actions, and agency-peer outliers. Related signals are combined, and only material evidence-backed changes are shown. Review the full methodology.

Federal contract obligations by funding office

See how positive obligations were attributed across funding offices in the 12 months ending Oct 23, 2026.

78.0% of positive obligations were attributed to FAA (693JG2). That represents $16.5M, up $4.5M from the preceding 12 months.

Latest 12-month share of positive obligations; the gray segment represents all other reported offices.

  1. FAA (693JG2)78.0% · $16.5M · up $4.5M
  2. 697DCK REGIONAL ACQUISITIONS SVCS6.7% · $1.4M · down $7.4M
  3. 6973GH FRANCHISE ACQUISITION SVCS5.8% · $1.2M · down $555K
  4. FAA (6973FL)4.5% · $950K · down $3.2M
  5. 693JJ6 FEDERAL RAILROAD ADMIN2.3% · $480K · up $480K
  6. All other reported offices2.7% of positive obligations
View reported office rankings, comparisons, and evidence

USAspending assigns each award to a funding office. That office may differ from the requiring activity, program office, contracting office, individual buyer, or actual customer.

  1. Reported funding office

    FAA (693JG2)

    #1Rank unchanged

    Latest 12 months

    $16.5M

    78.0% of positive obligations

    Versus preceding 12 months

    +$4.5M

    38 active prime contractors · 50 awards

    View office comparison and evidence

    Reported obligations increased 37.5% from $12.0M to $16.5M. The office’s share of positive obligations moved from 43.5% to 78.0%, a change of +34.5 percentage points.

    The latest period contains 85 actions across 50 awards and 17 newly active prime contractors. The preceding period contained 42 active prime contractors and 56 awards.

    Leading award-level changes

  2. Reported funding office

    697DCK REGIONAL ACQUISITIONS SVCS

    #2Rank unchanged

    Latest 12 months

    $1.4M

    6.7% of positive obligations

    Versus preceding 12 months

    −$7.4M

    23 active prime contractors · 28 awards

    View office comparison and evidence

    Reported obligations decreased 83.9% from $8.9M to $1.4M. The office’s share of positive obligations moved from 32.1% to 6.7%, a change of −25.4 percentage points.

    The latest period contains 51 actions across 28 awards and 11 newly active prime contractors. The preceding period contained 23 active prime contractors and 34 awards.

    Leading award-level changes

  3. Reported funding office

    6973GH FRANCHISE ACQUISITION SVCS

    #3Up 1 from #4

    Latest 12 months

    $1.2M

    5.8% of positive obligations

    Versus preceding 12 months

    −$555K

    10 active prime contractors · 11 awards

    View office comparison and evidence

    Reported obligations decreased 31.2% from $1.8M to $1.2M. The office’s share of positive obligations moved from 6.4% to 5.8%, a change of −0.7 percentage points.

    The latest period contains 16 actions across 11 awards and 4 newly active prime contractors. The preceding period contained 7 active prime contractors and 7 awards.

  4. Reported funding office

    FAA (6973FL)

    #4Down 1 from #3

    Latest 12 months

    $950K

    4.5% of positive obligations

    Versus preceding 12 months

    −$3.2M

    4 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations decreased 77.2% from $4.2M to $950K. The office’s share of positive obligations moved from 15.1% to 4.5%, a change of −10.6 percentage points.

    The latest period contains 6 actions across 4 awards and 3 newly active prime contractors. The preceding period contained 1 active prime contractor and 1 award.

  5. Reported funding office

    693JJ6 FEDERAL RAILROAD ADMIN

    #5New to the positive-obligation ranking

    Latest 12 months

    $480K

    2.3% of positive obligations

    Versus preceding 12 months

    +$480K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations rose from $0 to $480K. The office’s share of positive obligations moved from 0% to 2.3%, a change of +2.3 percentage points.

    The latest period contains 2 actions across 1 award and 1 newly active prime contractor. The preceding period contained 0 active prime contractors and 0 awards.

  6. Reported funding office

    FAA (69435R)

    #6Up 6 from #12

    Latest 12 months

    $432K

    2.0% of positive obligations

    Versus preceding 12 months

    +$407K

    4 active prime contractors · 5 awards

    View office comparison and evidence

    Reported obligations increased 1611.4% from $25K to $432K. The office’s share of positive obligations moved from 0.090% to 2.0%, a change of +1.9 percentage points.

    The latest period contains 7 actions across 5 awards and 3 newly active prime contractors. The preceding period contained 2 active prime contractors and 2 awards.

  7. Reported funding office

    ATLANTA AIRPORTS DIVISION OFFICE

    #7New to the positive-obligation ranking

    Latest 12 months

    $73K

    0.35% of positive obligations

    Versus preceding 12 months

    +$73K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations rose from $0 to $73K. The office’s share of positive obligations moved from 0% to 0.35%, a change of +0.3 percentage points.

    The latest period contains 1 action across 1 award and 1 newly active prime contractor. The preceding period contained 0 active prime contractors and 0 awards.

  8. Reported funding office

    6982AF CENTRAL FEDERAL LANDS DIVISI

    #8New to the positive-obligation ranking

    Latest 12 months

    $32K

    0.15% of positive obligations

    Versus preceding 12 months

    +$32K

    2 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations rose from $0 to $32K. The office’s share of positive obligations moved from 0% to 0.15%, a change of +0.1 percentage points.

    The latest period contains 4 actions across 4 awards and 2 newly active prime contractors. The preceding period contained 0 active prime contractors and 0 awards.

  9. Reported funding office

    6923G2 DOT MARITIME ADMINISTRATION

    #9Down 4 from #5

    Latest 12 months

    $31K

    0.15% of positive obligations

    Versus preceding 12 months

    −$160K

    2 active prime contractors · 2 awards

    View office comparison and evidence

    Reported obligations decreased 83.7% from $191K to $31K. The office’s share of positive obligations moved from 0.69% to 0.15%, a change of −0.5 percentage points.

    The latest period contains 2 actions across 2 awards and 1 newly active prime contractor. The preceding period contained 6 active prime contractors and 12 awards.

  10. Reported funding office

    6923G5 GREAT LAKES ST LAWRENCE SWY DEV. CORP.

    #10Up 3 from #13

    Latest 12 months

    $11K

    0.050% of positive obligations

    Versus preceding 12 months

    −$12K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations decreased 52.7% from $23K to $11K. The office’s share of positive obligations moved from 0.080% to 0.050%, a change of 0.0 percentage points.

    The latest period contains 1 action across 1 award. The preceding period contained 1 active prime contractor and 1 award.

  11. Reported funding office

    690567 WESTERN FEDERAL LANDS DIV

    No positive-obligation rank

    Latest 12 months

    −$7K

    0% of positive obligations

    Versus preceding 12 months

    −$161K

    4 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations moved from $153K in net obligations to $7K in net deobligations. The office’s share of positive obligations moved from 0.55% to 0%, a change of −0.6 percentage points.

    The latest period contains 6 actions across 4 awards. The preceding period contained 4 active prime contractors and 4 awards.

Contract types, competition, and procurement methods

From Oct 24, 2025 through Oct 23, 2026, 86 awards had positive obligations totaling $21.3M. Sp1 was the leading reported procedure, accounting for 43.2% of positive obligations. Awards with a reported parent IDV accounted for 0.45%.

Leading award type
93.7%
Definitive Contract
Leading reported procedure
43.2%
Sp1
Reported parent IDV
0.45%
of positive obligations had a reported parent IDV
Median reported offers
2
83 of 86 awards reported offers

Buying method changes

Compared with Oct 24, 2024–Oct 23, 2025. Based on 86 current awards and 98 preceding awards with positive net obligations.

Leading reported procedure
Sp1
Previously Negotiated Proposal/Quote · 55.1% preceding vs 43.2% current
How to read these changes

Directional color and the Up or Down labels show historical movement only. Green does not mean favorable and red does not mean unfavorable; neither predicts a future procurement method.

Same-NAICS comparison

Compared with the NAICS 238220 peer median, parent-IDV obligation share is 23.3 percentage points lower, reported full-and-open obligation share is 6.9 percentage points higher, delivery-order obligation share is 10.8 percentage points lower, and median positive award obligations are 78.4% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share0.45%23.8%-23.3 pts
Reported full-and-open obligation share7.3%0.39%+6.9 pts
Delivery-order obligation share0.45%11.3%-10.8 pts
Median positive award obligations$62K$35K+78.4%
Peer cohort and comparison limits

The peer median gives each of the 10 eligible agency markets equal weight. The included agency markets are:

Agency mission, scale, and acquisition context can differ. Peer position does not establish market attractiveness or predict a future procurement method.

View buying-method details and data coverage

Award types

Reported valueAwardsPositive obligationsShare
Definitive Contract(D)63$19.9M93.7%
Purchase Order(B)20$1.3M5.9%
Delivery Order(C)3$95K0.45%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)3$95K0.45%
Not reported83$21.2M99.6%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)3$95K0.45%
Not reported83$21.2M99.6%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Sp1(SIMPLIFIED ACQUISITION)10$9.2M43.2%
Np(NEGOTIATED PROPOSAL/QUOTE)15$3.5M16.4%
Simplified Acquisition(SP1)15$3.1M14.6%
Negotiated Proposal/Quote(NP)29$3.0M14.1%
Sss(ONLY ONE SOURCE)8$1.6M7.4%
Only One Source(SSS)8$897K4.2%
Other reported values1$14K0.065%

Extent competed

Reported valueAwardsPositive obligationsShare
G(NOT COMPETED UNDER SAP)4$6.0M28.3%
F(COMPETED UNDER SAP)6$3.2M14.9%
D(FULL AND OPEN COMPETITION AFTER EXCLUSION OF SOURCES)10$1.9M9.0%
Not Competed Under SAP(G)4$1.6M7.6%
A(FULL AND OPEN COMPETITION)6$1.6M7.5%
Full and Open Competition(A)12$1.5M7.3%
Other reported values44$5.4M25.5%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Not reported86$21.3M100.0%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)6$8.7M40.7%
Only One Source-Other (FAR 6.302-1 Other)(ONE)11$1.3M6.1%
SAP Non-Competition (FAR 13)(SP2)4$77K0.36%
Urgency (FAR 6.302-2)(URG)2$59K0.28%
Brand Name Description (FAR 6.302-1(C))(BND)1$28K0.13%
Less Than or Equal to the Micro-Purchase Threshold(MPT)1$4K0.020%
Not reported61$11.1M52.4%

Contract pricing types

Reported valueAwardsPositive obligationsShare
J(FIRM FIXED PRICE)34$14.3M67.1%
Firm Fixed Price(J)52$7.0M32.9%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Repair or Alteration of Radar and Navigational Facilities(Z2BC)3$5.8M27.5%
Installation of Equipment- Plumbing, Heating, and Waste Disposal Equipment(N045)15$4.1M19.3%
Construction of Radar and Navigational Facilities(Y1BC)6$2.9M13.5%
Maintenance of Radar and Navigational Facilities(Z1BC)7$2.7M12.6%
Installation of Equipment- Refrigeration, Air Conditioning, and Air Circulating Equipment(N041)9$1.3M6.3%
Repair or Alteration of Conference Space and Facilities(Z2AB)1$959K4.5%
Other reported values45$3.5M16.3%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
Federal Aviation Administration(6920)80$20.7M97.4%
Federal Railroad Administration(6930)1$480K2.3%
Federal Highway Administration(6925)3$33K0.16%
Maritime Administration(6938)1$31K0.15%
Saint Lawrence Seaway Development Corporation(6947)1$11K0.050%

Awarding offices

Reported valueAwardsPositive obligationsShare
697dck Regional Acquisitions Svcs(697DCK)62$18.6M87.3%
6973gh Franchise Acquisition Svcs(6973GH)15$2.0M9.6%
693jj6 Federal Railroad Admin(693JJ6)1$480K2.3%
693ka8 System Operations Contracts(693KA8)3$95K0.45%
6982af Central Federal Lands Divisi(6982AF)3$33K0.16%
6923g2 Dot Maritime Administration(6923G2)1$31K0.15%
Other reported values1$11K0.051%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
693KA822D00015(6920)2$67K0.32%
693KA820D00016(6920)1$28K0.13%
Not reported83$21.2M99.6%

Offers, award size, and timing

Median reported offers
2 median
83 reported · 3 not reported
Positive award obligations
$62K median
$26K–$335K middle 50%
Reported performance period
193 days (~6 months) median
86 reported · 0 not reported

Calculations group latest-period actions by award, retain awards with positive net obligations for share denominators, and use each award's latest reported USAspending procurement fields as of Oct 23, 2026. Blank competition, pricing, PSC, or parent-IDV values remain not reported; they are not inferred. Offer counts must be positive and below the FPDS 999 placeholder. Awarding organizations can differ from the funding agency that defines this page.

Top federal contractors

Latest 12-month market share, concentration, and complete prime contractor rankings across the period shown.

Prime contractor concentration
13 of 57prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
28.5%of positive obligations in the last 12 months
Leading four prime contractors
51.5%of positive obligations in the last 12 months
Leading eight prime contractors
68.4%of positive obligations in the last 12 months

Based on $21.3M in positive obligations during the 12 months ending Oct 23, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Oct 24, 2024–Oct 23, 2025.

Last 12mo obligation volume: Highest positive obligations first; net deobligations follow by magnitude; contractors with no activity in the last 12 months follow by all-period obligations. Ranks use the complete contractor list and remain fixed when search narrows the results.

15 leading contractors
  1. #1

    Last 12mo obligations

    $6.1M

    28.5%

    Dollar movement

    +$1.9M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    4 actions

    Historical and award details for SERGENTS MECHANICAL SYSTEMS INC
    Obligations: prior → latest
    $4.2M → $6.1M
    +45.1%
    Share: prior → latest
    13.9% → 28.5%
    +14.6 percentage points
    All-period obligations
    $16.3M
    9.2% of all-period positive obligations · 4 awards
    Recorded activity
    Since May 24, 2022
    through Sep 22, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside10
    Not reported00
    Reported small business21
    All-period set-aside types
    • 1 · HUBZone set-aside
  2. #2

    Last 12mo obligations

    $2.0M

    9.5%

    Dollar movement

    +$1.7M

    vs. prior 12 months

    Last 12mo awards

    5 awards

    6 actions

    Historical and award details for M. E. TAFOYA ENTERPRISES, INC.
    Obligations: prior → latest
    $284K → $2.0M
    +608.6%
    Share: prior → latest
    0.94% → 9.5%
    +8.5 percentage points
    All-period obligations
    $2.3M
    1.3% of all-period positive obligations · 5 awards
    Recorded activity
    Since Sep 2, 2025
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside20
    Reported no set-aside31
    Not reported00
    Reported small business51
    All-period set-aside types
    • 2 · Total small business
  3. #3

    Last 12mo obligations

    $1.7M

    7.8%

    Dollar movement

    +$1.7M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    4 actions

    Historical and award details for CORNERSTONE CONSTRUCTION SERVICES, LLC
    Obligations: prior → latest
    $7K → $1.7M
    +22762.8%
    Share: prior → latest
    0.020% → 7.8%
    +7.8 percentage points
    All-period obligations
    $7.9M
    4.5% of all-period positive obligations · 3 awards
    Recorded activity
    Since Jul 25, 2023
    through May 11, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside10
    Not reported00
    Reported small business21
    All-period set-aside types
    • 2 · SDVOSB sole source
  4. #4

    Last 12mo obligations

    $1.2M

    5.7%

    Dollar movement

    +$1.2M

    vs. prior 12 months

    Last 12mo awards

    3 awards

    3 actions

    Historical and award details for KEO & ASSOCIATES INC
    Obligations: prior → latest
    $0 → $1.2M
    Not comparable
    Share: prior → latest
    0% → 5.7%
    +5.7 percentage points
    All-period obligations
    $3.5M
    2.0% of all-period positive obligations · 10 awards
    Recorded activity
    Since Apr 27, 2022
    through Sep 22, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside21
    Not reported00
    Reported small business31
    All-period set-aside types
    • 2 · Total small business
    • 1 · 8(a) sole source
  5. #5

    Last 12mo obligations

    $1.0M

    4.9%

    Dollar movement

    +$1.0M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    2 actions

    Historical and award details for WAM INDUSTRIES, INCORPORATED
    Obligations: prior → latest
    $0 → $1.0M
    Not comparable
    Share: prior → latest
    0% → 4.9%
    +4.9 percentage points
    All-period obligations
    $1.0M
    0.59% of all-period positive obligations · 2 awards
    Recorded activity
    Since Aug 19, 2026
    through Sep 23, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside20
    Not reported00
    Reported small business10
    All-period set-aside types

    None reported.

  6. #6

    Last 12mo obligations

    $959K

    4.5%

    Dollar movement

    +$959K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for CORE SUSTAINABILITY, LLC
    Obligations: prior → latest
    $0 → $959K
    Not comparable
    Share: prior → latest
    0% → 4.5%
    +4.5 percentage points
    All-period obligations
    $959K
    0.54% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 18, 2026
    through Sep 18, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  7. #7

    Last 12mo obligations

    $832K

    3.9%

    Dollar movement

    +$608K

    vs. prior 12 months

    Last 12mo awards

    2 awards

    4 actions

    Historical and award details for PROW'ESS CONSTRUCTION CORP.
    Obligations: prior → latest
    $223K → $832K
    +272.4%
    Share: prior → latest
    0.74% → 3.9%
    +3.2 percentage points
    All-period obligations
    $1.9M
    1.1% of all-period positive obligations · 8 awards
    Recorded activity
    Since Nov 29, 2021
    through Jul 10, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside13
    Reported no set-aside10
    Not reported00
    Reported small business23
    All-period set-aside types
    • 7 · Total small business
  8. #8

    Last 12mo obligations

    $767K

    3.6%

    Dollar movement

    −$3.1M

    vs. prior 12 months

    Last 12mo awards

    7 awards

    18 actions

    Historical and award details for TJ&B AIR CONDITIONING AND ELECTRIC, LLC
    Obligations: prior → latest
    $3.8M → $767K
    −80.0%
    Share: prior → latest
    12.7% → 3.6%
    −9.1 percentage points
    All-period obligations
    $39.9M
    22.6% of all-period positive obligations · 51 awards
    Recorded activity
    Since Oct 14, 2021
    through Aug 19, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside55
    Reported no set-aside27
    Not reported00
    Reported small business712
    All-period set-aside types
    • 30 · Total small business
    • 3 · SDVOSB sole source
    • 3 · SDVOSB set-aside
  9. #9

    Last 12mo obligations

    $745K

    3.5%

    Dollar movement

    +$662K

    vs. prior 12 months

    Last 12mo awards

    2 awards

    3 actions

    Historical and award details for IBS L.L.C
    Obligations: prior → latest
    $84K → $745K
    +789.5%
    Share: prior → latest
    0.28% → 3.5%
    +3.2 percentage points
    All-period obligations
    $1.1M
    0.62% of all-period positive obligations · 6 awards
    Recorded activity
    Since Mar 13, 2024
    through Jul 10, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside22
    Reported no set-aside00
    Not reported00
    Reported small business22
    All-period set-aside types
    • 6 · Total small business
  10. #10

    Last 12mo obligations

    $603K

    2.8%

    Dollar movement

    +$603K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for TRIPACT, LLC
    Obligations: prior → latest
    $0 → $603K
    Not comparable
    Share: prior → latest
    0% → 2.8%
    +2.8 percentage points
    All-period obligations
    $603K
    0.34% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 22, 2026
    through Sep 22, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business10
    All-period set-aside types

    None reported.

  11. #11

    Last 12mo obligations

    $520K

    2.5%

    Dollar movement

    +$520K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for LAWDENSKY CONSTRUCTION COMPANY INCORPORATED
    Obligations: prior → latest
    $0 → $520K
    Not comparable
    Share: prior → latest
    0% → 2.5%
    +2.5 percentage points
    All-period obligations
    $1.4M
    0.80% of all-period positive obligations · 2 awards
    Recorded activity
    Since Sep 20, 2023
    through Apr 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  12. #12

    Last 12mo obligations

    $512K

    2.4%

    Dollar movement

    +$512K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for THE BLACKLEDGE GROUP, INC.
    Obligations: prior → latest
    $0 → $512K
    Not comparable
    Share: prior → latest
    0% → 2.4%
    +2.4 percentage points
    All-period obligations
    $512K
    0.29% of all-period positive obligations · 1 award
    Recorded activity
    Since Jul 15, 2026
    through Jul 15, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business10
    All-period set-aside types

    None reported.

  13. #13

    Last 12mo obligations

    $480K

    2.3%

    Dollar movement

    +$480K

    vs. prior 12 months

    Last 12mo awards

    1 award

    2 actions

    Historical and award details for CORSENTINO CONSTRUCTION, INC.
    Obligations: prior → latest
    $0 → $480K
    Not comparable
    Share: prior → latest
    0% → 2.3%
    +2.3 percentage points
    All-period obligations
    $480K
    0.27% of all-period positive obligations · 1 award
    Recorded activity
    Since Jun 16, 2026
    through Aug 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  14. #14

    Last 12mo obligations

    $436K

    2.0%

    Dollar movement

    +$436K

    vs. prior 12 months

    Last 12mo awards

    2 awards

    2 actions

    Historical and award details for GROUND LEVEL SERVICES LLC
    Obligations: prior → latest
    $0 → $436K
    Not comparable
    Share: prior → latest
    0% → 2.0%
    +2.0 percentage points
    All-period obligations
    $921K
    0.52% of all-period positive obligations · 6 awards
    Recorded activity
    Since Sep 28, 2022
    through Sep 11, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside21
    Reported no set-aside00
    Not reported00
    Reported small business21
    All-period set-aside types
    • 6 · Total small business
  15. #15

    Last 12mo obligations

    $392K

    1.8%

    Dollar movement

    +$392K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for MD MCKENZIE LLC
    Obligations: prior → latest
    $0 → $392K
    Not comparable
    Share: prior → latest
    0% → 1.8%
    +1.8 percentage points
    All-period obligations
    $392K
    0.22% of all-period positive obligations · 1 award
    Recorded activity
    Since Aug 21, 2026
    through Aug 21, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business10
    All-period set-aside types

    None reported.

Recent federal contract award activity

Recent contract actions with unusually large obligation changes or meaningful shifts in contractor and funding-office activity.

Base award

This action

+$5.8M

SERGENTS MECHANICAL SYSTEMS INC

FAA

ZAB ARTCC CHILLER 100, 200, 300, AND 400 DEMO AND REPLACEMENT.

Why it stands out

One action equaled at least a quarter of the market’s latest 12-month positive obligations.

The $5.8M action represented 27.3% of the market’s positive obligations over the latest 12 months.

Award net obligations
$5.8M
Share of 12-month positive obligations
27.3%
Supporting data
Prime contractor
#1 · 28.5% share
+14.6 percentage points · $1.9M net increase; action exceeded it by $3.9M
Funding office
#1 · 78.0% attributed share
+34.5 percentage points · $4.5M net increase; action exceeded it by $1.3M
Related:Largest share gainFunding office gain
PIID 697DCK26C00215
Base award

This action

+$1.5M

CORNERSTONE CONSTRUCTION SERVICES, LLC

FAA

PUMP REPLACEMENT AT THE NEW YORK TRACON, WESTBURY, NY

Why it stands out

The contractor climbed 62 positions in this market.

It now ranks #3 by positive obligations over the latest 12 months.

Award net obligations
$1.6M
Share of 12-month positive obligations
6.9%
Supporting data
Prime contractor
#3 · 7.8% share
up 62 ranks · +7.8 percentage points · $1.7M net increase; action accounted for 88.4%
Related:Largest rank gain
PIID 697DCK26C00035
Base award

This action

+$817K

M. E. TAFOYA ENTERPRISES, INC.

FAA

ENA HVAC REPLACEMENT

Why it stands out

The contractor climbed 14 positions in this market.

It now ranks #2 by positive obligations over the latest 12 months.

Award net obligations
$817K
Share of 12-month positive obligations
3.8%
Supporting data
Prime contractor
#2 · 9.5% share
up 14 ranks · +8.5 percentage points · $1.7M net increase; action accounted for 47.2%
PIID 697DCK26C00158
Base award

This action

+$959K

CORE SUSTAINABILITY, LLC

FAA

DESIGN/BUILD OF DOMESTIC HOT WATER SYSTEM AT HOUSTON AIR ROUTE TRAFFIC CONTROL CENTER.

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #6 in this market by positive obligations over the latest 12 months.

Award net obligations
$959K
Share of 12-month positive obligations
4.5%
Supporting data
Prime contractor
#6 · 4.5% share
Newly active in this market; no actions were reported in the preceding 12 months
PIID 697DCK26C00272
Base award

This action

+$603K

TRIPACT, LLC

FAA

ZMP ARTCC HEATING BOILER REPLACEMENT 1222SW2811

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #10 in this market by positive obligations over the latest 12 months.

Award net obligations
$603K
Share of 12-month positive obligations
2.8%
Supporting data
Prime contractor
#10 · 2.8% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#4 · 4.5% attributed share
$3.2M net decline despite this positive action
PIID 697DCK26C00195
Base award

This action

+$550K

WAM INDUSTRIES, INCORPORATED

FAA

QJB ARSR HVAC REPLACEMENT

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #5 in this market by positive obligations over the latest 12 months.

Award net obligations
$550K
Share of 12-month positive obligations
2.6%
Supporting data
Prime contractor
#5 · 4.9% share
Newly active in this market; no actions were reported in the preceding 12 months
Related:Largest newly observed contractorNewly observed contractor cohort
PIID 697DCK26C00289
View recent award activity by date (10)
  1. CRITICAL SYSTEMS SUPPORT LTDDeobligation · PIID 6913G621P800008
    Action−$14K
    Award net obligations$0
  2. CRITICAL SYSTEMS SUPPORT LTDDeobligation · PIID 6913G621P800089
    Action−$14K
    Award net obligations$0
  3. WAM INDUSTRIES, INCORPORATEDBase award · PIID 697DCK26C00289
    Action+$550K
    Award net obligations$550K
  4. DENSITY LLCBase award · PIID 697DCK26C00296
    Action+$48K
    Award net obligations$48K
  5. ARMSTRONG ELEVATOR COMPANYBase award · PIID 697DCK26P00118
    Action+$30K
    Award net obligations$30K
  6. CHEMTREAT, INC.Deobligation · PIID 697DCK23C00255
    Action>−$1
    Award net obligations$40K
  7. SERGENTS MECHANICAL SYSTEMS INCBase award · PIID 697DCK26C00215
    Action+$5.8M
    Award net obligations$5.8M
  8. TRIPACT, LLCBase award · PIID 697DCK26C00195
    Action+$603K
    Award net obligations$603K
  9. KEO & ASSOCIATES INCBase award · PIID 697DCK26C00278
    Action+$590K
    Award net obligations$590K
  10. CORE SUSTAINABILITY, LLCBase award · PIID 697DCK26C00272
    Action+$959K
    Award net obligations$959K

DOT plumbing, heating, and air-conditioning market FAQs

Answers based on reported federal contract data.

Who are the top DOT plumbing, heating, and air-conditioning contractors?

In the 12 months through October 23, 2026, SERGENTS MECHANICAL SYSTEMS INC, M. E. TAFOYA ENTERPRISES, INC., and CORNERSTONE CONSTRUCTION SERVICES, LLC were the leading DOT plumbing, heating, and air-conditioning prime contractors by positive obligations.

  1. #1

    SERGENTS MECHANICAL SYSTEMS INC

    $6,057,659 in positive obligations

  2. #2

    M. E. TAFOYA ENTERPRISES, INC.

    $2,015,358 in positive obligations

  3. #3

    CORNERSTONE CONSTRUCTION SERVICES, LLC

    $1,657,999 in positive obligations

Rankings use reported USAspending award data.

Did DOT contract obligations decrease in the plumbing, heating, and air-conditioning market?

Yes. Measured by net prime contract obligations, reported DOT activity in the plumbing, heating, and air-conditioning market decreased 23.5% from $27,639,516 in the preceding 12 months to $21,144,501 in the 12 months through October 23, 2026.

Latest 12 months
$21,144,501
Net prime contract obligations
Preceding 12 months
$27,639,516
Net prime contract obligations
Change
−23.5%
Between matched 12-month periods

Reported contract actions, not outlays or a forecast.

What recent DOT contract award activity was reported in the plumbing, heating, and air-conditioning market?

Recent DOT contract award activity reported in the plumbing, heating, and air-conditioning market included actions for SERGENTS MECHANICAL SYSTEMS INC, CORNERSTONE CONSTRUCTION SERVICES, LLC, and M. E. TAFOYA ENTERPRISES, INC. during the 12 months through October 23, 2026.

Action obligations are transaction-level amounts, not current award-level obligations.

Which procurement methods were reported for DOT contracts under NAICS 238220?

From October 24, 2025 through October 23, 2026, DOT reported 86 positive-obligation awards for plumbing, heating, and air-conditioning under NAICS 238220. The leading award type was definitive contract. The leading reported procedure was sp1.

Positive-obligation awards
86
Leading reported procedure
Sp1
43.2% of positive obligations
Leading award type
Definitive Contract
93.7% of positive obligations
Full and open
7.3%
of positive obligations
Reported parent IDV
0.5%
of positive obligations

Percentages use positive obligations as the denominator.

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Related market research

Complete market indexes:

Same NAICS at other agencies:

Nearby NAICS at this agency:

Markets sharing leading prime records:

Leading-prime vehicle memberships:

Company memberships do not establish award-channel use.

Reported obligations include contract actions from October 1, 2021 through October 23, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology