Carrier 336901-401 Knob
An official OEM Carrier replacement knob used on Carrier HVAC equipment to restore proper operation of the associated control or access component when the correct knob is required.
Key Features
Official OEM knob for Carrier HVAC equipment
Part number: 336901-401
Compatibility & Applications
Listed for Carrier HVAC equipment (compatibility must be confirmed using the unit's full model/serial and the manufacturer-specified replacement part number).
Must only be used where the manufacturer specifies this exact part number: 336901-401.
Installation & Operation Notes
Installation should be performed by a qualified HVAC service technician (or an experienced individual following the unit's service guidance).
Reference the unit's service/installation manual to confirm the correct knob location/application and any required alignment or fastening method.
User feedback indicates that, in some cases, installation may require minor on-site adjustment for fit (see review themes).
Maintenance & Troubleshooting
Typically replaced when the original knob is broken, missing, or damaged, affecting the ability to operate the related component or securely handle an access/control function.
If the replacement does not fit as expected, confirm the unit's exact part number match and inspect the mounting hole/interface for damage or non-standard sizing.
User Reviews & Q&A Summary
Correct-fit replacement: Many reviewers describe it as a perfect/exact fit and "just what I needed," often tied to fixing a furnace door/control situation after the original knob broke or was missing.
Ease of install: Common feedback says it's easy to install once the correct part is identified.
Availability & delivery: A frequent theme is that SupplyHouse had the part when others didn't, with praise for quick delivery.
Contact
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You were the third parts place I checked and you had what I was looking for.
Your price and quick delivery has to be the best in your field. Great job!!! Thanx, M.E.
VS
Most Liked Negative Review
The product did not fit my unit without modification to unit
2 times up ladder into and out of attic. I had to find a drill and bit large enough to open the hole so the part would fit.
Showing 1-10 of 17 reviews
Great product and fit
Nice product
Gary S
NJ
7 months ago
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Great product and fit
great fit
gshhk
NJ
7 months ago
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Great product and fit
works great. thanks
gshhk
mahwah NJ
7 months ago
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Perfect fit easy to install
fixed the door on my furnace
Onyx
St Louis Park, MN
12 months ago
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Perfect fit
Great products and perfect fit.
Linda
Little Silver, NJ
4 years ago
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I would buy this product and similar products again
Inexpensive and fast delivery
Ed
Chicago
4 years ago
Verified Buyer
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Perfect replacement for broken part.
Tech broke the part and did not tell me. This was an easy, perfect replacement part.
JinSS
Silver Spring, MD
4 years ago
Verified Buyer
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Great Product & Service
This is service like no other. Thanks for Rocking it!
RDeni
Pflugerville
4 years ago
Verified Buyer
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I would by this product again
Just what I needed, and it arrived quickly!!
Johnny
Dallas, TX
4 years ago
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As Advertised
Exact replacement part.
Bill
Bayou Vista, TX
4 years ago
Verified Buyer
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