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Honeywell
Humidifier

Model # HM509 Official Honeywell humidifier

Here are the diagrams and repair parts for Official Honeywell HM509 humidifier, as well as links to manuals and error code tables, if available.

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Installation guide
Owner’s manual

Model diagram and schematic

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Showing 10 of 29 parts  |
Humidistat H8908ASPST
#NI

Humidifier diagram

Humidistat

Part #H8908ASPST

The manufacturer no longer makes this part, and there's no substitute part

Duct Nozzle 50028003-001
#3

Humidifier diagram

Duct nozzle

Part #50028003-001

The manufacturer no longer makes this part, and there's no substitute part

Humidifier Water Container 50033181-001
#8

Humidifier diagram

Humidifier water container

Part #50033181-001

The manufacturer no longer makes this part, and there's no substitute part

Pressure Switch 50027910-001
#11

Humidifier diagram

Pressure switch

Part #50027910-001

The manufacturer no longer makes this part, and there's no substitute part

Water-level Sensor 50027998-001
#9

Humidifier diagram

Water-level sensor

Part #50027998-001

The manufacturer no longer makes this part, and there's no substitute part

Storage Tank & Pump 50045947-002
#NI

Humidifier diagram

Storage tank & pump

Part #50045947-002

The manufacturer no longer makes this part, and there's no substitute part

Polyphosphate Filter 50028044-001
#7

Humidifier diagram

Polyphosphate filter

Part #50028044-001

The manufacturer no longer makes this part, and there's no substitute part

#1 & #2 Filter 50046086-001
#NI

Humidifier diagram

#1 & #2 filter

Part #50046086-001

The manufacturer no longer makes this part, and there's no substitute part

Mounting Kit/10'hose 50024917-001
#1

Humidifier diagram

Mounting kit/10'hose

Part #50024917-001

The manufacturer no longer makes this part, and there's no substitute part

Visionpro Iaq YTH9421C1010
#NI

Humidifier diagram

Visionpro iaq

Part #YTH9421C1010

The manufacturer no longer makes this part, and there's no substitute part

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