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    Offering genuine parts for your specific brand.

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Lennox 66J78 Limit Switch

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$102.51
Brand
Lennox
SKU:
66J78
Condition:
New
Weight:
1.00 LBS
Shipping:
Calculated at Checkout
Cut-In Temp:
310
Cut-Out Temp:
350
Adding to cart… The item has been added
Brand
Lennox
SKU:
66J78
Condition:
New
Weight:
1.00 LBS
Cut-In Temp:
310
Cut-Out Temp:
350

Have Questions? Ask a Tech!

  • Genuine OEM Parts

    Offering genuine parts for your specific brand.

  • In-House HVAC Techs

    We help you diagnose, find, and install the part.

  • 1-Year Warranty & Returns

    Failed, or didn't need it? No hassle returns.

  • Expedited Delivery

    Offering competitively-priced expedited shipping.

Lennox 66J78 Replacement Part

Includes:

  • (1) - Limit Switch (66J78)

Specifications

  • Style: Disc
  • Series: 36T
  • Circuit: Normally Closed
  • Automatic Reset
  • Opens on Temperature Rise @ 350° F
  • Closes on Temperature Drop @ 310° F

Replaces Old Lennox Part Numbers

  • 67K55
  • 67K5501
  • 66J7801

Replaces Old Allied, Armstrong, Concord, Ducane Part Numbers:

  • 66J7801

Other Part Numbers

36TX21, 13724, A0311, Control, 662551284310

Fits Models:

(Press ctrl + F to find model number below.)

HM30-100-1, HM30-100-2, HM30-100-3, HM30-100-4, HM30-100-5, HM30-100P-1, HM30-100P-2, HM30-100P-3, HM30-100P-4, HM30-100P-5, HM30-150-1, HM30-150-2, HM30-150-3, HM30-150-4, HM30-150-5, HM30-150P-1, HM30-150P-2, HM30-150P-3, HM30-150P-4, HM30-150P-5

Fits Allied, Armstrong, Concord, Ducane, Magic Chef, and Magic-Pak Models:

(Press ctrl + F to find model number.)

HM30-100-1, HM30-100-2, HM30-100-3, HM30-100-4, HM30-100-5, HM30-100P-1, HM30-100P-2, HM30-100P-3, HM30-100P-4, HM30-100P-5, HM30-150-1, HM30-150-2, HM30-150-3, HM30-150-4, HM30-150-5, HM30-150P-1, HM30-150P-2, HM30-150P-3, HM30-150P-4, HM30-150P-5

Technical Hot & Cold honors all manufacturer warranties and offers a 1-year warranty on non-maintenance items.