Goodman
Furnace

Model # GDT070-3B Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GDT070-3B gas 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 111 parts  |

Furnace Secondary Heat Exchanger 4021309S
#61C

Heat exchanger assembly diagram

Furnace secondary heat exchanger

Part #4021309S

$192.79
6% OFF Phone Price : $204.79
In Stock
Switch B1370193
#91F

Heat exchanger assembly diagram

Switch

Part #B1370193

In Stock
Goodman 14   Flue Collector Box 4010013S
#101A

Heat exchanger assembly diagram

Goodman 14 flue collector box

Part #4010013S

In Stock
Furnace Flue Restrictor Plate 4028003
#81C

Heat exchanger assembly diagram

Furnace flue restrictor plate

Part #4028003

This item is not returnable
In Stock
Goodman Flue Collector Box 24.5 4010018S
#101I

Heat exchanger assembly diagram

Goodman flue collector box 24.5

Part #4010018S

In Stock
Manifold B4026002
#191D

Burner box assembly diagram

Manifold

Part #B4026002

In Stock
Goodman Tube Ht. Exch. Asm. 2cl 14 4821400S
#61G

Heat exchanger assembly diagram

Goodman tube ht. exch. asm. 2cl 14

Part #4821400S

In Stock
Furnace Flue Collector Box 4810007S
#101J

Heat exchanger assembly diagram

Furnace flue collector box

Part #4810007S

$301.54
$12.00 OFF Phone Price : $313.54
In Stock
Furnace Primary Thermal Limit Switch B1370189
#91D

Heat exchanger assembly diagram

Furnace primary thermal limit switch

Part #B1370189

$26.40
19% OFF Phone Price : $32.40
In Stock
Door-blwr 2515008
#61

Wrapper assembly diagram

Door-blwr

Part #2515008

In Stock

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.…