4520 Space And Water Heating Equipment - NSN Parts Database

Federal Supply Code 4520, Space and Water Heating Equipment, encompasses equipment and apparatus used to heat an area and/or water. FSC 4520 includes boilers that are 15 pounds WSP and under; domestic water storage tanks up to 100 gallons capacity; fireplace heaters; furnaces; space heaters; heating radiators; immersion heaters; and water heaters up to 100 gallons recovery. Note that FSC 4520 does not include vehicle heaters; aircraft heaters; boilers over 15 pounds WSP; domestic water storage tanks over 100 gallons capacity; or water heaters over 100 gallons recovery. For vehicle heaters, see FSG 25. For aircraft heaters, see FSG 16. For boilers over 15 pounds WSP and water heaters over 100 gallons recovery, see FSG 44.

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Manufacturer List for Space And Water Heating Equipment