Ducane
Furnace

Model # UHZB125A5 Official Ducane 3/4-hp upflow horizontal oil furnace

Here are the diagrams and repair parts for Official Ducane UHZB125A5 3/4-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

?

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

Search
ALL PARTS
Showing 10 of 70 parts  |

Band, Chamber Mounting 20197803

#43

All parts diagram

Band, chamber mounting

Part #20197803

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

Stud, Burner Mount (3) 20124501

#48

All parts diagram

Stud, burner mount (3)

Part #20124501

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

Motor Mount Band B0209507

#72

All parts diagram

Motor mount band

Part #B0209507

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

Hex Nut With Washer, 1/4-20 B1015965

#68

All parts diagram

Hex nut with washer, 1/4-20

Part #B1015965

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

Washer (3) B1009007

#45

All parts diagram

Washer (3)

Part #B1009007

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

Screw (heat-x Leg) (4) B1008599

#49

All parts diagram

Screw (heat-x leg) (4)

Part #B1008599

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

Intermediate Top Panel 20121104

#8

All parts diagram

Intermediate top panel

Part #20121104

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

Symptoms for gas ranges

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure...

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t...

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes....

Repair difficulty
Time required
15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual...

Repair difficulty
Time required
60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range....

Repair difficulty
Time required
45 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....