Humidaire FH300B Humidifier Parts

43 Humidifier Parts Available For This Model

Looking for genuine replacement parts for your Humidaire FH300B? Whether you need Complete Units, Motors and Blades, or Covers, it’s easy to get your humidifier back in shape.

Part Categories for HUMIDAIRE FH300B:

Complete Units | Covers | Frames | Hardware | Hoses, Valves, and Regulators | Motors and Blades | Other Parts | Water Tanks

Accessories for all Humidifiers:

Accessories | Chemicals | Tubing

Model Description

Designed to take the high heat output of solid-fuel furnaces, when installe...


      I was totally impressed with the ease of ordering, how fast it got here, how well it was packed, and the fact that it fit perfectly. Awesome job. Thank you!

February 23, 2022 Customer Reviews

Complete Units

Ref.ImagePart No & DescriptionPrice
FH300B partFH300B - Complete Humidifer 24 Disc
Quantity: 1
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Not Available More information

Covers

Ref.ImagePart No & DescriptionPrice
137ASY. - Motor Cover Asy. Wnameplate Labels
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$108.33

Special order

P137ASSY part137ASSY - Motor Cover Assembly
Quantity: 1
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$24.08

In stock

Frames

Ref.ImagePart No & DescriptionPrice
TRH-29 partRH-29 - Mounting Frame Assembly
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$54.12

In stock

Hardware

Ref.ImagePart No & DescriptionPrice
H-90-384 partH-90-384 - Nylatch Asy. (2 Plastic Grommets & 2 Scr
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$3.59

In stock

JRH-356 partRH-356 - Retaining Clip For Humidaire
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$8.70

In stock

R2H-301 partH-301 - Lock Nut For Humidiare
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$11.65

In stock

Hoses, Valves, and Regulators

Ref.ImagePart No & DescriptionPrice
H-378 partH-378 - Buna-n Seat For Float Arm Each
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$18.70

In stock

H-7041 partH-7041 - Saddle Valve Kit
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$26.72

In stock

LRH474 partRH474 - Float
Quantity: 1
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$90.32

In stock

Motors and Blades

Ref.ImagePart No & DescriptionPrice
ORH325 partRH325 - Motor Humidaire
Quantity: 1
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$325.24

In stock

Other Parts

Ref.ImagePart No & DescriptionPrice
RH2176 partRH2176 - Humid-disc Assy 20 Disk
Quantity: 20
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$191.80

In stock

H-95-356 partH-95-356 - Stainless Steel Shaft 2 Clips
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$14.38

In stock

2015-822 part2015-822 - Gasket Set (2 Long &2 Short
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$23.90

In stock

159ASSY. - Parts Bag
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$38.40

In stock

ARH96A partRH96A - Humid-disc Assy 13 Disks
Quantity: 1
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$164.02

Ships From
Manufacturer

BRH97B partRH97B - Humid-disc Assy 24 Disks
Quantity: 1
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$281.46

In stock

CRH447C partRH447C - Humid-disc Assy 32 Disk
Quantity: 1
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$288.22

Ships From
Manufacturer

DH-23 partH-23 - Disc (each) H23 For Humidaire And Adams
Quantity: 1
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$11.38

In stock

GH-444 partH-444 - Spacer For Disc. Each.
Quantity: 1
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$6.30

In stock

HH-98 partH-98 - Protective Washer ( 1 Per Assy)
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$7.82

In stock

IH95 partH95 - Shaft S.s. With 2 Clip
Quantity: 1
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$21.54

In stock

KH-369 partH-369 - Screen Shield (2 Required
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$6.81

In stock

MH-453 partH-453 - Snap-in Snap-out
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Not Available More information
R1RH-3301 partRH-3301 - Replaced By Redesinged Reservoir
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Not Available More information
SH-13 partH-13 - Spit Bearing Bracket For Humidaire
Quantity: 1
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$31.26

In stock

UH-357 partH-357 - Quick Fasteners
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$9.24

In stock

VRH-435 partRH-435 - Direct Flush Drain Asy.
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$29.69

In stock

W2015ASY part2015ASY - Gasket Set (4 Pcs)
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$16.08

In stock

Water Tanks

Ref.ImagePart No & DescriptionPrice
H-82 partH-82 - Drain Cap -- Need To Check Diameter This
Quantity: 1
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$7.98

In stock

QRH-340 partRH-340 - Reservoir For Humidiare
Quantity: 1
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$318.92

In stock

XH-323 - See Ext Desc
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$23.12

Special order

Accessories for all Humidifiers:

Accessories

Ref.ImagePart No & DescriptionPrice
AC-912 partAC-912 - Pan Tabets ( 6 Pack)
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$13.65

In stock

246 part246 - Humidifier Treatment
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$15.65

In stock

Chemicals

Ref.ImagePart No & DescriptionPrice
FSRM6 partFSRM6 - Humidafresh Rainforest Mist Water Treatm
Quantity: 1
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$11.03

In stock

FSCA6 partFSCA6 - Humidafresh Cinnamon Apple Water Treatme
Quantity: 1
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$11.15

In stock

FSFV6 partFSFV6 - Humidafresh Vanilla Water Treatment
Quantity: 1
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$11.03

In stock

AC802 partAC802 - Humidifier Bacteriostatic Water Treatmen
Quantity: 1
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$11.28

In stock

1T-6 part1T-6 - Humdf Water Treatment32 Oz
Quantity: 1
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$11.80

In stock

AC816 partAC816 - Extra Strength Humidifier Cleaner
Quantity: 1
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$11.22

In stock

FSOB6 partFSOB6 - Humidafresh Ocean Breeze
Quantity: 1
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$11.53

In stock

3US-6 part3US-6 - Water Treatment Cleaner
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$11.22

In stock

Tubing

Ref.ImagePart No & DescriptionPrice
21581001 part21581001 - Worm Gear Clamp, 5 5/8 - 6 1/2
Quantity: 1
View Part Info
$1.99

In stock