Federal Supply Class × FSC 4520
Space and Water Heating Equipment FSC 4520
Every government purchase record we've indexed in Federal Supply Class 4520, with a link back to the source record for each one.
304
NSNs tracked
342
Purchase records
$8,972,569
Total $
Market view
Competition mix
How many items in this class are coded for competition, and how many for a named source? Share of items by acquisition method code.
- Coded for competition
- Coded for a named source
- Not coded
From the acquisition method codes on each item record.
Most re-bought items
Which items come up again and again? Ranked by solicitations recorded over the last 12 months.
Counts every solicitation recorded for the item in the last 12 months.
Demand trend
Is the government buying more or less from this class? Solicitations posted per week.
- Solicitations posted that week
- 8-week average
In the week of Oct 26, 46 solicitations were posted. The 8-week average is 23.
Who wins in this class
Is this class spread across many suppliers or held by a few? Award dollars by supplier, last 12 months.
Where the winning suppliers are
Which states are the suppliers that win this class in? One tile per state.
From supplier addresses in the federal CAGE file. 12 suppliers have no U.S. state on file.
Products
No items match these filters.
Contract awards in this category
0 award records totaling $0.00 where the public description doesn't identify a specific part. Newest first; every row links to its official USAspending record.
No category-level awards indexed yet.
Cite this page
Citation
NSN Explorer. "Space and Water Heating Equipment FSC 4520." nsnexplorer.com, https://nsnexplorer.com/fsc/4520/. Data as of November 6, 2026.
Link
https://nsnexplorer.com/fsc/4520/