INCH-POUND
MIL-PRF-22594C(SH)
31 January 2012
SUPERSEDING
MIL-PRF-22594B(SH)
6 December 2004
PERFORMANCE SPECIFICATION
HEATERS, DUCT TYPE, ELECTRIC
This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is
available for use by all Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers electric, duct type heaters used in heating, ventilating, and air
conditioning systems.
1.2 Classification. Electric, duct type heaters are of the following sizes and types as specified in table I
(see 6.2).
1.2.1 Sizes. The sizes of electric, duct type heaters are as follows:
19EH
-
3¼- by 6-inch housing
29EH
-
12¼- by 30-inch housing
20EH
-
3¼- by 6-inch housing
30EH
-
15¼- by 30-inch housing
21EH
-
3¼- by 6-inch housing
31EH
-
12¼- by 42-inch housing
22EH
-
3¼- by 9-inch housing
32EH
-
18¼- by 30-inch housing
23EH
-
3¼- by 14-inch housing
33EH
-
16¾- by 42-inch housing
24EH
-
6¼- by 9-inch housing
34EH
-
15¼- by 56-inch housing
25EH
-
6¼- by 14-inch housing
35EH
-
24¼- by 42-inch housing
26EH
-
6¼- by 22-inch housing
36EH
-
21¼- by 56-inch housing
27EH
-
9¼- by 22-inch housing
37EH
-
36¼- by 42-inch housing
28EH
-
9¼- by 30-inch housing
38EH
-
33¼- by 56-inch housing
1.2.2 Types. The types of electric, duct type heaters are as follows:
Type L
-
Low Heat Output
Type M
-
Medium Heat Output
Type H
-
High Heat Output
Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems
Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or
emailed to CommandStandards@navy.mil, with the subject line "Document Comment". Since contact information
can change, you may want to verify the currency of this address information using the ASSIST Online database at
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