Federal Capture Intelligence

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

Contract actions: October 1, 2021 – September 10, 2026 Updated September 11, 2026 Department of Transportation agency guide NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors
Latest 12 months
$16.9M
Net obligations · Down $7.2M vs. $24.1M preceding
Prime contractors
59
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 $165.5M in net obligations across 468 awards in Plumbing, Heating, and Air-Conditioning Contractors at the Department of Transportation from Oct 1, 2021 through Sep 10, 2026. This market accounts for 0.39% of $42.9B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations decreased 29.9% from $24.1M to $16.9M. 12 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY26 is year-to-date through Sep 10, 2026; earlier years show complete fiscal-year totals.

FY26 year-to-date: $10.8M versus $21.6M through the same date in FY25 (−49.9%).
Net obligations · complete fiscal yearNet obligations · FY26 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$48.4M274Complete
FY2023$47.1M275Complete
FY2024$31.6M272Complete
FY2025$27.6M229Complete
FY2026$10.8M176YTD through Sep 10, 2026

Market at a glance

All reported prime contract awards
All-period net obligations
$165.5M
468 awards · 208 prime contractors
Latest 12-month movement
−29.9%
$16.9M vs. $24.1M
Leading eight prime share
69.9%
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 $42.9B in agency-wide net obligations.
Set-aside share when reported
65.2% of 445 awards with reported set-aside status.
Set-aside reporting
290 set aside · 155 no set-aside · 23 not reported

What changed in the last 12 months?

Sep 11, 2025–Sep 10, 2026, compared with Sep 11, 2024–Sep 10, 2025.

Competitive shifts

GUARDIAN CONSTRUCTION, INC. gained the most market share
1.9%→20.1%+18.2 percentage points
The contractor now ranks #1 by positive obligations, based on 8 reported actions.
APEX MECHANICAL LLC fell the most in the contractor rankings
#5→#58Down 53 places
The contractor accounts for 0.020% of positive obligations across 5 reported actions.

Buyer demand

Reported obligations through FAA decreased
$13.9M→$7.7M−$6.2M
Latest-period activity spans 47 awards across 37 prime contractors.
Reported obligations through 697DCK REGIONAL ACQUISITIONS SVCS increased
$3.4M→$7.0M+$3.6M
Latest-period activity spans 31 awards across 25 prime contractors.
View 4 additional material changes

Competitive shifts

SERGENTS MECHANICAL SYSTEMS INC had the largest decline in reported obligations
$4.2M→$257K−$3.9M
The contractor now ranks #15 by positive obligations and accounts for 1.5% of positive obligations, based on 3 reported actions.
10 contractors were first observed in this market during the latest 12 months
$1.3MLatest 12-month obligations
Contractor-level obligations and first-observed dates appear below. “First observed” applies only to this market and the period shown.
View 10 contractors
ContractorLatest 12 months

Market structure

Reported set-aside share decreased
62.0%→51.5%−10.5 percentage points
Of 103 latest-period awards with reported set-aside status, 53 were reported as set-asides.
Top-five contractor share increased
51.9%→58.7%+6.8 percentage points
Contractors outside the top five now account for 41.3% of positive obligations.
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 Sep 10, 2026.

45.4% of positive obligations were attributed to FAA (693JG2). That represents $7.7M, down $6.2M from the preceding 12 months.

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

  1. FAA (693JG2)45.4% · $7.7M · down $6.2M
  2. 697DCK REGIONAL ACQUISITIONS SVCS41.8% · $7.0M · up $3.6M
  3. 6973GH FRANCHISE ACQUISITION SVCS5.6% · $944K · down $935K
  4. 693JJ6 FEDERAL RAILROAD ADMIN2.9% · $480K · up $480K
  5. FAA (6973FL)2.1% · $348K · down $3.8M
  6. All other reported offices2.3% 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

    $7.7M

    45.4% of positive obligations

    Versus preceding 12 months

    −$6.2M

    37 active prime contractors · 47 awards

    View office comparison and evidence

    Reported obligations decreased 44.8% from $13.9M to $7.7M. The office’s share of positive obligations moved from 57.6% to 45.4%, a change of −12.3 percentage points.

    The latest period contains 88 actions across 47 awards and 15 newly active prime contractors. The preceding period contained 42 active prime contractors and 59 awards.

    Leading award-level changes

  2. Reported funding office

    697DCK REGIONAL ACQUISITIONS SVCS

    #2Up 1 from #3

    Latest 12 months

    $7.0M

    41.8% of positive obligations

    Versus preceding 12 months

    +$3.6M

    25 active prime contractors · 31 awards

    View office comparison and evidence

    Reported obligations increased 105.2% from $3.4M to $7.0M. The office’s share of positive obligations moved from 14.3% to 41.8%, a change of +27.5 percentage points.

    The latest period contains 62 actions across 31 awards and 10 newly active prime contractors. The preceding period contained 23 active prime contractors and 32 awards.

    Leading award-level changes

  3. Reported funding office

    6973GH FRANCHISE ACQUISITION SVCS

    #3Up 1 from #4

    Latest 12 months

    $944K

    5.6% of positive obligations

    Versus preceding 12 months

    −$935K

    9 active prime contractors · 10 awards

    View office comparison and evidence

    Reported obligations decreased 49.7% from $1.9M to $944K. The office’s share of positive obligations moved from 7.8% to 5.6%, a change of −2.2 percentage points.

    The latest period contains 18 actions across 10 awards and 3 newly active prime contractors. The preceding period contained 7 active prime contractors and 7 awards.

  4. Reported funding office

    693JJ6 FEDERAL RAILROAD ADMIN

    #4New to the positive-obligation ranking

    Latest 12 months

    $480K

    2.9% 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 2.9%, a change of +2.9 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.

  5. Reported funding office

    FAA (6973FL)

    #5Down 3 from #2

    Latest 12 months

    $348K

    2.1% of positive obligations

    Versus preceding 12 months

    −$3.8M

    3 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations decreased 91.7% from $4.2M to $348K. The office’s share of positive obligations moved from 17.4% to 2.1%, a change of −15.3 percentage points.

    The latest period contains 5 actions across 3 awards and 2 newly active prime contractors. The preceding period contained 1 active prime contractor and 1 award.

  6. Reported funding office

    690567 WESTERN FEDERAL LANDS DIV

    #6Up 3 from #9

    Latest 12 months

    $101K

    0.60% of positive obligations

    Versus preceding 12 months

    +$56K

    4 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations increased 125.3% from $45K to $101K. The office’s share of positive obligations moved from 0.19% to 0.60%, a change of +0.4 percentage points.

    The latest period contains 9 actions across 4 awards and 2 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

    0.43% 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 0.43%, a change of +0.4 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

    FAA (69435R)

    #8Up 4 from #12

    Latest 12 months

    $67K

    0.40% of positive obligations

    Versus preceding 12 months

    +$42K

    4 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations increased 166.9% from $25K to $67K. The office’s share of positive obligations moved from 0.11% to 0.40%, a change of +0.3 percentage points.

    The latest period contains 7 actions across 4 awards and 4 newly active prime contractors. The preceding period contained 1 active prime contractor and 1 award.

  9. Reported funding office

    6923G2 DOT MARITIME ADMINISTRATION

    #9Down 4 from #5

    Latest 12 months

    $63K

    0.37% of positive obligations

    Versus preceding 12 months

    −$161K

    3 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations decreased 72.0% from $224K to $63K. The office’s share of positive obligations moved from 0.93% to 0.37%, a change of −0.6 percentage points.

    The latest period contains 4 actions across 3 awards and 1 newly active prime contractor. The preceding period contained 8 active prime contractors and 15 awards.

  10. Reported funding office

    DOT MARITIME ADMINISTRATION

    #10Up 1 from #11

    Latest 12 months

    $43K

    0.25% of positive obligations

    Versus preceding 12 months

    +$12K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations increased 39.9% from $31K to $43K. The office’s share of positive obligations moved from 0.13% to 0.25%, a change of +0.1 percentage points.

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

  11. Reported funding office

    TRANSPORTATION SECURITY ADMIN KOA

    No positive-obligation rank

    Latest 12 months

    $0

    0% of positive obligations

    Versus preceding 12 months

    −$97K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations decreased 100.0% from $97K to $0. The office’s share of positive obligations moved from 0.40% to 0%, a change of −0.4 percentage points.

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

Contract types, competition, and procurement methods

From Sep 11, 2025 through Sep 10, 2026, 83 awards had positive obligations totaling $16.9M. Only One Source was the leading reported procedure, accounting for 24.6% of positive obligations. Awards with a reported parent IDV accounted for 0.56%.

Leading award type
91.3%
Definitive Contract
Leading reported procedure
24.6%
Only One Source
Reported parent IDV
0.56%
of positive obligations had a reported parent IDV
Median reported offers
2
80 of 83 awards reported offers

Same-NAICS comparison

Compared with the NAICS 238220 peer median, parent-IDV obligation share is 26.3 percentage points lower, reported full-and-open obligation share is 8.6 percentage points higher, delivery-order obligation share is 12.6 percentage points lower, and median positive award obligations are 51.4% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share0.56%26.8%-26.3 pts
Reported full-and-open obligation share9.6%1.0%+8.6 pts
Delivery-order obligation share0.56%13.2%-12.6 pts
Median positive award obligations$50K$33K+51.4%
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)57$15.5M91.3%
Purchase Order(B)23$1.4M8.1%
Delivery Order(C)3$95K0.56%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)3$95K0.56%
Not reported80$16.9M99.4%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)3$95K0.56%
Not reported80$16.9M99.4%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Only One Source(SSS)10$4.2M24.6%
Negotiated Proposal/Quote(NP)35$3.7M22.0%
Simplified Acquisition(SP1)18$3.6M21.2%
Sss(ONLY ONE SOURCE)7$3.1M18.1%
Np(NEGOTIATED PROPOSAL/QUOTE)9$1.4M8.2%
Sp1(SIMPLIFIED ACQUISITION)3$997K5.9%
Other reported values1$14K0.081%

Extent competed

Reported valueAwardsPositive obligationsShare
Not Competed(C)9$4.0M23.8%
B(NOT AVAILABLE FOR COMPETITION)2$2.5M14.6%
Full and Open Competition After Exclusion of Sources(D)21$2.1M12.5%
Competed Under SAP(F)14$2.0M11.7%
Full and Open Competition(A)15$1.6M9.6%
Not Competed Under SAP(G)4$1.6M9.5%
Other reported values18$3.1M18.3%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Not reported83$16.9M100.0%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Only One Source-Other (FAR 6.302-1 Other)(ONE)11$4.5M26.8%
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)5$4.4M25.7%
Urgency (FAR 6.302-2)(URG)3$69K0.41%
SAP Non-Competition (FAR 13)(SP2)3$47K0.28%
Brand Name Description (FAR 6.302-1(C))(BND)1$28K0.17%
Less Than or Equal to the Micro-Purchase Threshold(MPT)1$4K0.030%
Not reported59$7.9M46.6%

Contract pricing types

Reported valueAwardsPositive obligationsShare
Firm Fixed Price(J)64$11.5M67.8%
J(FIRM FIXED PRICE)19$5.4M32.1%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Maintenance of Air Traffic Control Towers(Z1BA)12$6.1M36.0%
Installation of Equipment- Plumbing, Heating, and Waste Disposal Equipment(N045)13$2.7M16.0%
Maintenance of Radar and Navigational Facilities(Z1BC)6$2.3M13.7%
Construction of Radar and Navigational Facilities(Y1BC)5$2.3M13.4%
Installation of Equipment- Refrigeration, Air Conditioning, and Air Circulating Equipment(N041)9$1.0M6.1%
Repair or Alteration of Air Traffic Control Towers(Z2BA)9$657K3.9%
Other reported values29$1.8M10.9%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
Federal Aviation Administration(6920)72$16.2M95.7%
Federal Railroad Administration(6930)1$480K2.8%
Federal Highway Administration(6925)5$134K0.79%
Maritime Administration(6938)4$106K0.62%
Saint Lawrence Seaway Development Corporation(6947)1$11K0.060%

Awarding offices

Reported valueAwardsPositive obligationsShare
697dck Regional Acquisitions Svcs(697DCK)55$14.4M84.7%
6973gh Franchise Acquisition Svcs(6973GH)14$1.8M10.4%
693jj6 Federal Railroad Admin(693JJ6)1$480K2.8%
6923g2 Dot Maritime Administration(6923G2)4$106K0.62%
690567 Western Federal Lands Div(690567)2$101K0.59%
693ka8 System Operations Contracts(693KA8)3$95K0.56%
Other reported values4$44K0.26%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
693KA822D00015(6920)2$67K0.40%
693KA820D00016(6920)1$28K0.17%
Not reported80$16.9M99.4%

Offers, award size, and timing

Median reported offers
2 median
80 reported · 3 not reported
Positive award obligations
$50K median
$21K–$176K middle 50%
Reported performance period
182 days (~6 months) median
83 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 Sep 10, 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
12 of 59prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
20.1%of positive obligations in the last 12 months
Leading four prime contractors
53.9%of positive obligations in the last 12 months
Leading eight prime contractors
69.9%of positive obligations in the last 12 months

Based on $16.9M in positive obligations during the 12 months ending Sep 10, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Sep 11, 2024–Sep 10, 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

    $3.4M

    20.1%

    Dollar movement

    +$2.9M

    vs. prior 12 months

    Last 12mo awards

    3 awards

    8 actions

    Historical and award details for GUARDIAN CONSTRUCTION, INC.
    Obligations: prior → latest
    $518K → $3.4M
    +558.1%
    Share: prior → latest
    1.9% → 20.1%
    +18.2 percentage points
    All-period obligations
    $11.7M
    7.0% of all-period positive obligations · 13 awards
    Recorded activity
    Since Mar 11, 2022
    through Jul 1, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside12
    Reported no set-aside22
    Not reported00
    Reported small business34
    All-period set-aside types
    • 6 · Total small business
    • 1 · 8(a) sole source
    • 1 · Partial small business
  2. #2

    Last 12mo obligations

    $3.2M

    19.1%

    Dollar movement

    +$1.4M

    vs. prior 12 months

    Last 12mo awards

    8 awards

    21 actions

    Historical and award details for TJ&B AIR CONDITIONING AND ELECTRIC, LLC
    Obligations: prior → latest
    $1.9M → $3.2M
    +74.4%
    Share: prior → latest
    7.0% → 19.1%
    +12.1 percentage points
    All-period obligations
    $39.9M
    24.0% 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-aside64
    Reported no set-aside28
    Not reported00
    Reported small business812
    All-period set-aside types
    • 30 · Total small business
    • 3 · SDVOSB sole source
    • 3 · SDVOSB set-aside
  3. #3

    Last 12mo obligations

    $1.7M

    9.8%

    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
    0.030% → 9.8%
    +9.8 percentage points
    All-period obligations
    $7.9M
    4.8% 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

    $832K

    4.9%

    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
    0.84% → 4.9%
    +4.1 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
  5. #5

    Last 12mo obligations

    $821K

    4.8%

    Dollar movement

    +$537K

    vs. prior 12 months

    Last 12mo awards

    2 awards

    4 actions

    Historical and award details for M. E. TAFOYA ENTERPRISES, INC.
    Obligations: prior → latest
    $284K → $821K
    +188.8%
    Share: prior → latest
    1.1% → 4.8%
    +3.8 percentage points
    All-period obligations
    $1.1M
    0.66% of all-period positive obligations · 2 awards
    Recorded activity
    Since Sep 2, 2025
    through Sep 1, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside11
    Not reported00
    Reported small business21
    All-period set-aside types
    • 1 · Total small business
  6. #6

    Last 12mo obligations

    $745K

    4.4%

    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
    0.32% → 4.4%
    +4.1 percentage points
    All-period obligations
    $1.1M
    0.66% 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
  7. #7

    Last 12mo obligations

    $620K

    3.7%

    Dollar movement

    −$201K

    vs. prior 12 months

    Last 12mo awards

    2 awards

    2 actions

    Historical and award details for KEO & ASSOCIATES INC
    Obligations: prior → latest
    $822K → $620K
    −24.5%
    Share: prior → latest
    3.1% → 3.7%
    +0.6 percentage points
    All-period obligations
    $2.9M
    1.7% of all-period positive obligations · 9 awards
    Recorded activity
    Since Apr 27, 2022
    through Aug 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside12
    Not reported00
    Reported small business22
    All-period set-aside types
    • 2 · Total small business
    • 1 · 8(a) sole source
  8. #8

    Last 12mo obligations

    $520K

    3.1%

    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% → 3.1%
    +3.1 percentage points
    All-period obligations
    $1.4M
    0.85% 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.

  9. #9

    Last 12mo obligations

    $512K

    3.0%

    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% → 3.0%
    +3.0 percentage points
    All-period obligations
    $512K
    0.31% 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.

  10. #10

    Last 12mo obligations

    $489K

    2.9%

    Dollar movement

    +$489K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for WAM INDUSTRIES, INCORPORATED
    Obligations: prior → latest
    $0 → $489K
    Not comparable
    Share: prior → latest
    0% → 2.9%
    +2.9 percentage points
    All-period obligations
    $489K
    0.29% of all-period positive obligations · 1 award
    Recorded activity
    Since Aug 19, 2026
    through Aug 19, 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.

  11. #11

    Last 12mo obligations

    $480K

    2.8%

    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% → 2.8%
    +2.8 percentage points
    All-period obligations
    $480K
    0.29% 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.

  12. #12

    Last 12mo obligations

    $392K

    2.3%

    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% → 2.3%
    +2.3 percentage points
    All-period obligations
    $392K
    0.24% 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.

  13. #13

    Last 12mo obligations

    $300K

    1.8%

    Dollar movement

    +$300K

    vs. prior 12 months

    Last 12mo awards

    1 award

    2 actions

    Historical and award details for MAKE READY CONSTRUCTION SERVICES, LLC
    Obligations: prior → latest
    $0 → $300K
    Not comparable
    Share: prior → latest
    0% → 1.8%
    +1.8 percentage points
    All-period obligations
    $300K
    0.18% of all-period positive obligations · 1 award
    Recorded activity
    Since Feb 2, 2026
    through Jul 28, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  14. #14

    Last 12mo obligations

    $263K

    1.6%

    Dollar movement

    −$2.2M

    vs. prior 12 months

    Last 12mo awards

    3 awards

    6 actions

    Historical and award details for CMP COMMERCIAL CONSTRUCTION INC
    Obligations: prior → latest
    $2.5M → $263K
    −89.3%
    Share: prior → latest
    9.3% → 1.6%
    −7.7 percentage points
    All-period obligations
    $14.8M
    8.9% of all-period positive obligations · 9 awards
    Recorded activity
    Since Oct 25, 2021
    through Jul 27, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside34
    Reported no set-aside00
    Not reported00
    Reported small business34
    All-period set-aside types
    • 3 · SDVOSB sole source
    • 3 · Total small business
    • 2 · SDVOSB set-aside
  15. #15

    Last 12mo obligations

    $257K

    1.5%

    Dollar movement

    −$3.9M

    vs. prior 12 months

    Last 12mo awards

    1 award

    3 actions

    Historical and award details for SERGENTS MECHANICAL SYSTEMS INC
    Obligations: prior → latest
    $4.2M → $257K
    −93.8%
    Share: prior → latest
    15.7% → 1.5%
    −14.2 percentage points
    All-period obligations
    $10.5M
    6.3% of all-period positive obligations · 3 awards
    Recorded activity
    Since May 24, 2022
    through May 20, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported00
    Reported small business11
    All-period set-aside types
    • 1 · HUBZone set-aside

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

+$3.2M

GUARDIAN CONSTRUCTION, INC.

697DCK REGIONAL ACQUISITIONS SVCS

REPLACE HVAC AT SBN ATCT, SOUTH BEND INTERNATIONAL AIRPORT, SOUTH BEND, IN

Why it stands out

The contractor climbed 12 positions in this market.

It now ranks #1 by positive obligations over the latest 12 months.

Award net obligations
$3.3M
Share of 12-month positive obligations
19.1%
Supporting data
Prime contractor
#1 · 20.1% share
up 12 ranks · +18.2 percentage points · $2.9M net increase; action exceeded it by $341K
Funding office
#2 · 41.8% attributed share
up 1 rank · +27.5 percentage points · $3.6M net increase; action accounted for 89.5%
Related:Largest share gainFunding office gain
PIID 697DCK25C00267
Base award

This action

+$2.5M

TJ&B AIR CONDITIONING AND ELECTRIC, LLC

697DCK REGIONAL ACQUISITIONS SVCS

REMOVE AND REPLACE MODULAR CHILLERS UNITS, REPAIR STORE FRONT DOORS, BREAK ROOM AND FACILITY ENTRANCE AT RSW TRACON AND ATCT FORT MYERS FL.

Why it stands out

The contractor climbed 2 positions in this market.

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

Award net obligations
$2.5M
Share of 12-month positive obligations
14.6%
Supporting data
Prime contractor
#2 · 19.1% share
up 2 ranks · +12.1 percentage points · $1.4M net increase; action exceeded it by $1.1M
PIID 697DCK25C00240
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 63 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
8.6%
Supporting data
Prime contractor
#3 · 9.8% share
up 63 ranks · +9.8 percentage points · $1.7M net increase; action accounted for 88.4%
Funding office
#1 · 45.4% attributed share
$6.2M net decline despite this positive action
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 13 positions in this market.

It now ranks #5 by positive obligations over the latest 12 months.

Award net obligations
$817K
Share of 12-month positive obligations
4.8%
Supporting data
Funding office
#1 · 45.4% attributed share
$6.2M net decline despite this positive action
PIID 697DCK26C00158
Base award

This action

+$520K

LAWDENSKY CONSTRUCTION COMPANY INCORPORATED

FAA

PRB 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 #8 in this market by positive obligations over the latest 12 months.

Award net obligations
$520K
Share of 12-month positive obligations
3.1%
Supporting data
Prime contractor
#8 · 3.1% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#1 · 45.4% attributed share
$6.2M net decline despite this positive action
PIID 697DCK26C00104
Base award

This action

+$512K

THE BLACKLEDGE GROUP, INC.

FAA

MLB ARSR HVAC REPLACEMENT/ELECTRICAL REFURBISHMENT

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 #9 in this market by positive obligations over the latest 12 months.

Award net obligations
$512K
Share of 12-month positive obligations
3.0%
Supporting data
Prime contractor
#9 · 3.0% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#1 · 45.4% attributed share
$6.2M net decline despite this positive action
PIID 697DCK26C00155
View recent award activity by date (10)
  1. IMPACT FIRE SERVICES LLCBase award · PIID 697DCK26C00239
    Action+$37K
    Award net obligations$37K
  2. LONERGAN ELECTRIC SERVICE INCModification · PIID 6973GH26C00157
    Action+$31K
    Award net obligations$219K
  3. DAIKIN APPLIED AMERICAS INCBase award · PIID 697DCK26C00261
    Action+$26K
    Award net obligations$26K
  4. M. E. TAFOYA ENTERPRISES, INC.Base award · PIID 697DCK26C00158
    Action+$817K
    Award net obligations$817K
  5. BML CONSTRUCTION LLCBase award · PIID 697DCK26C00260
    Action+$22K
    Award net obligations$22K
  6. KEO & ASSOCIATES INCBase award · PIID 697DCK26C00218
    Action+$432K
    Award net obligations$432K
  7. MD MCKENZIE LLCBase award · PIID 697DCK26C00228
    Action+$392K
    Award net obligations$392K
  8. GROUND LEVEL SERVICES LLCBase award · PIID 697DCK26C00236
    Action+$90K
    Award net obligations$90K
  9. HAYNES MECHANICAL SYSTEMS, INC.Base award · PIID 6982AF26P000026
    Action+$4K
    Award net obligations$4K
  10. TRANE U.S. INC.Base award · PIID 697DCK26P00088
    Action+$116K
    Award net obligations$116K

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 September 10, 2026, GUARDIAN CONSTRUCTION, INC., TJ&B AIR CONDITIONING AND ELECTRIC, LLC, and CORNERSTONE CONSTRUCTION SERVICES, LLC were the leading DOT plumbing, heating, and air-conditioning prime contractors by positive obligations.

  1. #1

    GUARDIAN CONSTRUCTION, INC.

    $3,411,700 in positive obligations

  2. #2

    TJ&B AIR CONDITIONING AND ELECTRIC, LLC

    $3,231,932 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 29.9% from $24,059,268 in the preceding 12 months to $16,862,179 in the 12 months through September 10, 2026.

Latest 12 months
$16,862,179
Net prime contract obligations
Preceding 12 months
$24,059,268
Net prime contract obligations
Change
−29.9%
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 GUARDIAN CONSTRUCTION, INC., TJ&B AIR CONDITIONING AND ELECTRIC, LLC, and CORNERSTONE CONSTRUCTION SERVICES, LLC during the 12 months through September 10, 2026.

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

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

From September 11, 2025 through September 10, 2026, DOT reported 83 positive-obligation awards for plumbing, heating, and air-conditioning under NAICS 238220. The leading award type was definitive contract. The leading reported procedure was only one source.

Positive-obligation awards
83
Leading reported procedure
Only One Source
24.6% of positive obligations
Leading award type
Definitive Contract
91.3% of positive obligations
Full and open
9.6%
of positive obligations
Reported parent IDV
0.6%
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 September 10, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology