PSC 4520: Space and Water Heating Equipment
Product code
Code facts
- Spend category
- Facilities & Construction Facility Related Materials
- Part of
-
- 45
- Contract awards
- 806 In the last 12 months
- Contract obligations
- $34,437,448 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $336,294 |
| FY2026 | $43,073,273 |
| FY2025 | $34,437,448 |
| FY2024 | $25,278,109 |
| FY2023 | $40,015,333 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | HDT Expeditionary Systems Inc. | $10,679,500 | |
| 2 | Atlantic Diving Supply, Inc. | $3,685,690 | |
| 3 | Argo Turboserve Corporation | $2,755,440 | |
| 4 | The Electric Heater Co | $2,252,255 | |
| 5 | Windward Enterprises, LLC | $2,244,803 | |
| 6 | Pioneer Industries, LLC | $1,812,169 | |
| 7 | S I T Corporation | $1,692,130 | |
| 8 | J. & L. Mavilia Incorporated | $1,531,643 | |
| 9 | Integrated Procurement Technologies | $1,506,468 | |
| 10 | MCO Solutions, Inc. | $1,470,240 |
See the full FY2025 ranking of PSC 4520 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Defense Logistics Agency | $25,458,844 | |
| 2 | Department of the Army | $10,926,571 | |
| 3 | Department of Justice | $1,773,490 | |
| 4 | Department of Commerce | $1,698,327 | |
| 5 | Department of Veterans Affairs | $1,022,867 | |
| 6 | Department of the Navy | $1,017,017 | |
| 7 | Department of Homeland Security | $665,556 | |
| 8 | Air Force | $535,750 | |
| 9 | Department of Agriculture | $155,187 | |
| 10 | Department of State | $104,310 |
Top NAICS codes by obligations
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Ohio | $14,274,632 | |
| 2 | Virginia | $6,820,527 | |
| 3 | Connecticut | $2,658,819 | |
| 4 | South Carolina | $2,400,036 | |
| 5 | Maryland | $2,285,408 | |
| 6 | New York | $2,257,399 | |
| 7 | Florida | $1,860,040 | |
| 8 | Pennsylvania | $1,500,283 | |
| 9 | California | $1,022,535 | |
| 10 | Missouri | $835,920 | |
| 11 | Georgia | $627,965 | |
| 12 | Montana | $439,840 | |
| 13 | Wisconsin | $367,638 | |
| 14 | Idaho | $334,502 | |
| 15 | Kentucky | $328,664 | |
| 16 | Utah | $311,795 | |
| 17 | Louisiana | $296,647 | |
| 18 | Tennessee | $293,188 | |
| 19 | New Jersey | $274,520 | |
| 20 | Washington | $270,585 | |
| 21 | West Virginia | $258,751 | |
| 22 | Arizona | $213,355 | |
| 23 | Arkansas | $192,840 | |
| 24 | Colorado | $192,814 | |
| 25 | Indiana | $187,325 | |
| 26 | Nevada | $186,570 | |
| 27 | Michigan | $142,795 | |
| 28 | Texas | $136,274 | |
| 29 | Illinois | $95,427 | |
| 30 | Alabama | $88,445 | |
| 31 | Minnesota | $85,316 | |
| 32 | Massachusetts | $80,980 | |
| 33 | Alaska | $68,624 | |
| 34 | Wyoming | $61,294 | |
| 35 | Oklahoma | $44,759 | |
| 36 | Nebraska | $23,370 | |
| 37 | Kansas | $16,836 | |
| 38 | Maine | $11,940 | |
| 39 | Oregon | $11,439 | |
| 40 | Iowa | $3,643 | |
| 41 | New Mexico | $2,375 | |
| 42 | North Carolina | $1,666 |
Show all 42
Shares are of everything obligated under PSC 4520 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 38 more
Latest 48 of 892 listed here. See the rest on GovTribe.
Definition
Includes: Boilers, 15 pounds WSP and under (for boilers over 15 pounds WSP, see FSC 4410); Domestic Water Storage Tanks through 100 gallon capacity; Fireplace Heaters; Furnaces; Space Heaters; Heating Radiators; Immersion Heaters; Water Heaters, through 100 gallon recovery capacity (for heaters over 100 gallons recovery capacity, see FSC 4410).
Excludes: Vehicle Heaters (FSC 2540); Aircraft Heaters (FSC 1660).
Quick answers
What is PSC 4520?
PSC 4520 is Space and Water Heating Equipment, a product code in PSC 45, Plumbing, Heating, Waste Disposal.
How much do federal agencies spend under PSC 4520?
Federal contracts under PSC 4520 obligated $34,437,448 in fiscal year 2025 and $143,140,456 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC 4520?
The contractors with the most obligated under PSC 4520 in fiscal years 2026 and 2027 are HDT Expeditionary Systems Inc. ($10,679,500); Atlantic Diving Supply, Inc. ($3,685,690); and Argo Turboserve Corporation ($2,755,440).
Which agencies buy the most under PSC 4520?
The agencies that obligated the most under PSC 4520 in fiscal years 2026 and 2027 are Defense Logistics Agency ($25,458,844), Department of the Army ($10,926,571) and Department of Justice ($1,773,490).
Which NAICS codes are used with PSC 4520?
The NAICS codes with the most obligated under PSC 4520 in fiscal years 2026 and 2027 are 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing, 333414 Heating Equipment (except Warm Air Furnaces) Manufacturing and 333316 Photographic and Photocopying Equipment Manufacturing.
Where is the work under PSC 4520 performed?
By place of performance, the states with the most contract obligations under PSC 4520 over the last 12 months are Ohio ($14,274,632), Virginia ($6,820,527) and Connecticut ($2,658,819).
What is the latest contract opportunity under PSC 4520?
The latest contract opportunity under PSC 4520 is OEM Electric Water Heater and Tank, special notice, posted October 22, 2026.
On GovTribe
See everything under PSC 4520
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
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