Model # 20GV-5T NAT Official Williams wall furnace

Here are the diagrams and repair parts for Official Williams 20GV-5T-NAT wall 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

ALL PARTS

Showing 10 of 56 parts |

#30

All parts diagram

Wire bridle

Part #P320912

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

#25

All parts diagram

Motor

Part #P320905

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

#29

All parts diagram

Furnace 2-speed fan switch

Part #P320911A

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

#10

All parts diagram

Furnace pilot burner

Part #P179900

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

#26

All parts diagram

Fan blade

Part #P320907

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

Furnace Temperature Limit Switch P321127

#33

All parts diagram

Furnace temperature limit switch

Part #P321127

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

#35

All parts diagram

Wire

Part #P321519

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

#1A

All parts diagram

Door

Part #8300989

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

#15B

All parts diagram

Gas valve

Part #P295000A

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

#18

All parts diagram

Manifold

Part #P182400

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

Repair guides for side-by-side refrigerators

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

The door gasket seals the gap around the door to keep the cold air in and the warm air out. Replace a worn or damaged do…

Repair difficulty

Time required

30 minutes or less

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair difficulty

Time required

15 minutes or less

How to replace a defrost sensor in a side-by-side refrigerator

If frost is building up in the freezer of your side-by-side refrigerator, the defrost sensor could be at fault. You can …

Repair difficulty

Time required

45 minutes or less

Articles and videos for side-by-side refrigerators

How to Replace the Water Filter in a GE Refrigerator

Model # 20GV-5T NAT Official Williams wall furnace

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Repair guides for side-by-side refrigerators

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

How to replace a refrigerator water valve

How to replace a defrost sensor in a side-by-side refrigerator

Articles and videos for side-by-side refrigerators

How to Replace the Water Filter in a GE Refrigerator

How to Replace the Water Filter in a Maytag Refrigerator

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Parts & More

Stay Connected

Quick links

Let us help you

More resources