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Amana
Furnace

Model # SU-125B3 Official Amana gas-fired upflow furnace

Here are the diagrams and repair parts for Official Amana SU-125B3 gas-fired upflow furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 197 parts  |
Motor Capacitor, 5 Mfd - 440v 22-9603
#21B

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Motor capacitor, 5 mfd - 440v

Part #22-9603

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

Air Filter - 20 X 25 X 1 - Hi-velocity (1 Per) 22-1144
#26

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Air filter - 20 x 25 x 1 - hi-velocity (1 per)

Part #22-1144

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

Manifold Assembly (less Control And Orifice) 985-1203
#41F

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Manifold assembly (less control and orifice)

Part #985-1203

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

Rear Panel Assembly 253-7000
#33D

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Rear panel assembly

Part #253-7000

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

Blower Base Assembly - 10-8 251-4855
#48F

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Blower base assembly - 10-8

Part #251-4855

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

Motor Pulley 20-1509
#14A

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Motor pulley

Part #20-1509

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

Blower Pulley 7 X 3/4 20-1560
Blower pulley 7 x 3/4

Part #20-1560

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

Blower Base Assembly - Twin 10-8 254-4858
#48K

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Blower base assembly - twin 10-8

Part #254-4858

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

Blower Base Seal Strip And Baffle 250-6029
#46A

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Blower base seal strip and baffle

Part #250-6029

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

Furnace Blower Belt, 43-in 20-2043
#16A

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Furnace blower belt, 43-in

Part #20-2043

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

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