Amana
Furnace

Model # SU-175B5 Official Amana gas-fired upflow furnace

Here are the diagrams and repair parts for Official Amana SU-175B5 gas-fired upflow furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
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

Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

Main causes: damaged fan blade, engine needs a tune up, dirty carburetor...

Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up...

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank...

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor...

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor...

Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

How to rebuild a leaf blower carburetor

How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow ...

Repair difficulty
Time required
60 minutes or less
How to replace a leaf blower carburetor

How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow t...

Repair difficulty
Time required
15 minutes or less
How to replace leaf blower fuel lines

How to replace leaf blower fuel lines

Leaf blower fuel lines deteriorate with time and eventually can split or crack. You can remove and replace them yourself...

Repair difficulty
Time required
60 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles to get the most out of your leaf blower.

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape....

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs....

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect....