Whirlpool
Central Air Conditioner

Model # R121 Official Whirlpool air conditioner heat pump

Here are the diagrams and repair parts for Official Whirlpool R121 air conditioner heat pump, 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 129 parts  |

Screw 487910
#16

Air flow and control diagram

Screw

Part #487910

Replaced by #WP488729

?
Manufacturer substitution
This part replaces 487910. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.39
19% OFF Phone Price : $5.39
In Stock
Valve 876764
#6A

Optional diagram

Valve

Part #876764

Replaced by #876764

?
Manufacturer substitution
This part replaces 876764. Substitute parts can look different from the original.
BEST SELLER
$26.12
19% OFF Phone Price : $32.12
In Stock
Refrigerator Screw 1157158
#3

Cabinet diagram

Refrigerator screw

Part #1157158

Replaced by #WP489069

?
Manufacturer substitution
This part replaces 1157158. Substitute parts can look different from the original.
This item is not returnable
$4.39
19% OFF Phone Price : $5.39
In Stock
Screw, 8 X 1 488480
Screw, 8 x 1

Part #488480

Replaced by #WP489069

?
Manufacturer substitution
This part replaces 488480. Substitute parts can look different from the original.
This item is not returnable
$4.39
19% OFF Phone Price : $5.39
In Stock
Sealer-gum 212432
#12

Optional diagram

Sealer-gum

Part #212432

Replaced by #212643

?
Manufacturer substitution
This part replaces 212432. Substitute parts can look different from the original.
This item is not returnable
$50.09
11% OFF Phone Price : $56.09
In Stock
Capacitor 952384
#3

Air flow and control diagram

Capacitor

Part #952384

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

Wire Tie 612805
#9

Air flow and control diagram

Wire tie

Part #612805

Replaced by #WPW10339879

?
Manufacturer substitution
This part replaces 612805. Substitute parts can look different from the original.
This item is not returnable
$4.37
19% OFF Phone Price : $5.37
In Stock
Cable Tie 857547
#31

Unit diagram

Cable tie

Part #857547

Replaced by #WPW10339879

?
Manufacturer substitution
This part replaces 857547. Substitute parts can look different from the original.
This item is not returnable
$4.37
19% OFF Phone Price : $5.37
In Stock
Sealer 99344
#13

Optional diagram

Sealer

Part #99344

Replaced by #4318168

?
Manufacturer substitution
This part replaces 99344. Substitute parts can look different from the original.
In Stock
Refrigerant Access Valve, 5/8-in 978029
#6F

Optional diagram

Refrigerant access valve, 5/8-in

Part #978029

Replaced by #978029

?
Manufacturer substitution
This part replaces 978029. Substitute parts can look different from the original.
In Stock

Effective articles & videos to help repair your central air conditioners

Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long....

How to prevent the 2 most common AC failures from ruining your summer

How to prevent the 2 most common AC failures from ruining your summer

Get tips to help keep your central AC running all summer long...

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....