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ArmyService SupportRank #65 of 101 by 4-year cost
91C

Utilities Equipment Repairer

13-week pipeline · BCT + AIT · Fort Gregg-Adams, VA
Training Pipeline
$31K
13 weeks
Annual MILPERS
$63K
E-4, 3 years service
Equipment Burden
$6K
per year (amortized)
4-Year Total Cost
$309K
DoD investment
4-Year Cost Breakdown
Training Pipeline
$31K10%
Military Personnel (MILPERS × 4yr)
$254K82%
Equipment Burden (× 4yr)
$24K8%
Training: 10% · MILPERS: 82% · Equipment: 8%= $309K
By the Numbers

Clean water, heating, and cooling are strategic assets in deployed environments. 91Cs maintain the systems that prevent non-combat casualties — and civilian HVAC/plumbing technicians with equivalent skills earn $60K–$90K.

Training Pipeline
Duration
13 weeks
Type
BCT + AIT
Location
Fort Gregg-Adams, VA
Pipeline Cost
$31K

91Cs maintain the heating, cooling, plumbing, and water purification systems that keep military installations habitable. A broken reverse osmosis water purification unit (ROWPU) in a deployed environment is a public health emergency.

Equipment & Annual Burden
Assigned Equipment
  • ·ROWPU Water Purification ($285K)
  • ·HVAC Maintenance Tools
  • ·Plumbing Tools
  • ·Electrical Test Equipment
Annual Equipment Burden
$6K/yr
ROWPU share + utilities maintenance tools amortized
Military Personnel Cost (Annual)
Grade BenchmarkE-4, 3 years service
Base MILPERS$63K/yr
Total Annual MILPERS$63K/yr
Force Structure Context
Annual Accessions~900
Avg Career Length6 years
Annual Training Bill$27.9M
Total Force 4yr Cost$277.7M
Read 91C Reviews →← All MOS ProfilesAverage Per-Soldier Cost →
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Cost estimates derived from DoD Comptroller per-soldier analysis, RAND Corporation military personnel studies, CBO military compensation reports, service-specific training cost testimony, and published equipment unit costs. Error margin ±15%. Individual costs vary by duty station, assignment, and deployment tempo. This is Phase 3 of the Honest MOS DoD Budget Intelligence Roadmap.