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Amana
Furnace

Model # SU-175B4 Official Amana gas-fired upflow furnace

Here are the diagrams and repair parts for Official Amana SU-175B4 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  |
Blower Access Door Assembly 253-2450
#36D

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

Blower access door assembly

Part #253-2450

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

Flue Outlet Pouch Gasket 22-2371
#45F

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

Flue outlet pouch gasket

Part #22-2371

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

Rear Panel Assembly 251-7000
#33B

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

Rear panel assembly

Part #251-7000

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

Thermocouple (m-h Q309a1046) Su-175 & Su-200 - Nat. And 21-0023
Thermocouple (m-h q309a1046) su-175 & su-200 - nat. and

Part #21-0023

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

Bearing Cups - 3/4" Lau #7667 20-5025
#8

(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

Bearing cups - 3/4" lau #7667

Part #20-5025

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

Furnace Blower Belt, 40-in 20-2040
#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, 40-in

Part #20-2040

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

Fan And Limit Control 21-0379
#22A

(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

Fan and limit control

Part #21-0379

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

Blower Assembly (w/motor) 980-0189
#1B

(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

Blower assembly (w/motor)

Part #980-0189

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

Heating Element Tube Baffle 905-0901
#44

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

Heating element tube baffle

Part #905-0901

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

Grommet - Rubber Motor Mount 22-9733
#20

(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

Grommet - rubber motor mount

Part #22-9733

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

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