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181798 — HEATER,SPACE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

181798: HEATER,SPACE.

The HEATER,SPACE is a the manufacturer industrial component. Key specifications include depth: 55.500 INCHES NOMINAL IN, width: 30.125 INCHES NOMINAL IN, height: 73.250 INCHES NOMINAL IN, fuel_type: FUEL OIL, mounting_type: FLOOR SURFACE, FREE STANDING, DUCTED, ignition_method: PILOT. This part is cataloged in the U.S.

Government catalog under NSN 4520-01-167-9024, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
181798
NSN: 4520-01-167-9024
FSC: 4520 — Space and Water Heating Equipment
CAGE: 79466 — AESYS TECHNOLOGIES, L.L.C. DBA JACKSON & CHURCH HVAC GLOBAL DIV YORK SHIPLEY GLOBAL (USA)
SPECIFICATIONS
depth55.500 INCHES NOMINAL IN
width30.125 INCHES NOMINAL IN
height73.250 INCHES NOMINAL IN
fuel_typeFUEL OIL
mounting_typeFLOOR SURFACE, FREE STANDING, DUCTED
ignition_methodPILOT
fuel_feed_methodEXTERNAL PRESSURE
heat_delivery_rate350000.0 BRITISH THERMAL UNIT
heating_element_typeBURNER
operating_control_typeHAND SWITCH
fuel_consumption_rate_per_hour3.1 GALLONS
NSN4520-01-167-9024
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEATER,SPACE TITLE COMPONENT PN 181798 MFR HEATER,SPACE
KEY FEATURES
•
HEAT DELIVERY RATE: 350000.0 BRITISH THERMAL UNIT
•
FUEL TYPE: FUEL OIL
•
HEIGHT: 73.250 INCHES NOMINAL IN
•
DEPTH: 55.500 INCHES NOMINAL IN
•
WIDTH: 30.125 INCHES NOMINAL IN
•
FUEL CONSUMPTION RATE PER HOUR: 3.1 GALLONS
•
IGNITION METHOD: PILOT
•
MOUNTING TYPE: FLOOR SURFACE, FREE STANDING, DUCTED
TECHNICAL CHARACTERISTICS
HEAT DELIVERY RATE350000.0 BRITISH THERMAL UNIT
FUEL TYPEFUEL OIL
HEIGHT73.250 INCHES NOMINAL IN
DEPTH55.500 INCHES NOMINAL IN
WIDTH30.125 INCHES NOMINAL IN
FUEL CONSUMPTION RATE PER HOUR3.1 GALLONS
IGNITION METHODPILOT
MOUNTING TYPEFLOOR SURFACE, FREE STANDING, DUCTED
FUEL FEED METHODEXTERNAL PRESSURE
HEATING ELEMENT TYPEBURNER
OTHER ITEMS IN FSC 4520 — Space and Water Heating Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4520-00-000-0098 4520-00-000-0099 4520-00-001-1240 4520-00-001-3518 4520-00-001-3519 4520-00-001-6052 4520-00-001-6298 4520-00-001-7726
SUBSTITUTES & CROSS-REFERENCES 3
IAN-35-VReference document
Same NSN cross-reference
Reference document — Secondary reference
SDF-35-OFUSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SDF-35Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 181798?
181798 is a HEATER,SPACE.
What parts can replace 181798?
There are 3 known substitutes for 181798: IAN-35-V, SDF-35-OFU, SDF-35. Substitute compatibility should be verified for your specific system.
What is the NSN for 181798?
181798 is cataloged in the U.S. Government catalog under NSN 4520-01-167-9024. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.