Can’t find your part? Contact us:

+1-309-603-4777

Furnace

Model # UHZB100A4 Official Ducane 1/2-hp upflow horizontal oil furnace

Here are the diagrams and repair parts for Official Ducane UHZB100A4 1/2-hp upflow horizontal oil 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 70 parts |

Screw, #8 X 1/2 "b" Hex Slot Washer Hd (2) B1008722

#63

All parts diagram

Screw, #8 x 1/2 "b" hex slot washer hd (2)

Part #B1008722

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

Heat Exchanger (includes No. 34-53) 20422003

#33

All parts diagram

Heat exchanger (includes no. 34-53)

Part #20422003

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

Cabinet (includes No. 2,3,6 & 7) Dark Beige 20120101

#1

All parts diagram

Cabinet (includes no. 2,3,6 & 7) dark beige

Part #20120101

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

Screw #8 X 3/4 "a" Hex Slot Washer Hd (2) B1008740

#67

All parts diagram

Screw #8 x 3/4 "a" hex slot washer hd (2)

Part #B1008740

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

Bottom Front Leg 20198101

#51

All parts diagram

Bottom front leg

Part #20198101

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

Parkerized Screw (58) B1008464

#46

All parts diagram

Parkerized screw (58)

Part #B1008464

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

Reverse Flow Limit (140) W/insulator 20121901

#25

All parts diagram

Reverse flow limit (140) w/insulator

Part #20121901

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

Belly Band Motor Mount 12" Blower B4308643

#66

All parts diagram

Belly band motor mount 12" blower

Part #B4308643

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

Rosette Observation Tube 20121501

#11

All parts diagram

Rosette observation tube

Part #20121501

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

Screw, 1/4-20 X 1/4 Hex Head (3) B1016966

#70

All parts diagram

Screw, 1/4-20 x 1/4 hex head (3)

Part #B1016966

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

Symptoms for electric cooktops

Why doesn't my electric cooktop's surface element heat?

Main causes: broken surface element, surface element switch failure, control system problem, surface element limiter swi…

Repair guides for electric cooktops

How to replace a coil surface element on an electric cooktop

How to replace a coil surface element on an electric cooktop

Easily replace a coil surface element in 15 minutes or less by following these step-by-step instructions.…

Repair difficulty

Time required

15 minutes or less

How to replace a radiant element on an electric cooktop

How to replace a radiant element on an electric cooktop

Follow these step-by-step instructions to replace a damaged radiant element on your electric cooktop when the element wo…

Repair difficulty

Time required

45 minutes or less

How to replace the glass top on an electric cooktop

How to replace the glass top on an electric cooktop

Don't use a cracked or damage glass cooktop—replace it, using these instructions to guide you.…

Repair difficulty

Time required

30 minutes or less

Effective articles & videos to help repair your furnaces

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.…

Stay Connected