When your Carrier HVAC system stops moving air correctly, the replacement part you need depends on where the problem is. The control panel might only need a new knob, the blower housing may need a new wheel, or the fan motor itself could be failing. The four parts here cover all three scenarios, with listed prices ranging from $21.98 to $265.00.
Quick take
The most important difference among these four Carrier HVAC parts is component type. Two are blower wheels, one is a knob, and one is a motor. They are not interchangeable, so your repair job will dictate which one makes sense. The knob is the lowest-priced item at $21.98, the two blower wheels sit at $96.94 and $194.73, and the motor is the highest at $265.00. All are listed as new, with the three Carrier Hvac parts made in the United States and the motor made in Vietnam.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| Carrier LA22ZA120 Blower Wheel | USD 194.73 | |
| Carrier 336901-401 Knob | USD 21.98 | |
| Carrier LA22LA014 Blower Wheel | USD 96.94 | |
| Carrier HD42AQ253 Motor | USD 265.00 |
Decision matrix
- Choose the Carrier 336901-401 knob if your repair is limited to a control knob and you want the lowest listed price.
- Choose the Carrier LA22LA014 blower wheel if you need a 10 3/4" diameter by 9 3/8" width wheel at a mid-range price.
- Choose the Carrier LA22ZA120 blower wheel if you need an 11" x 11" wheel with a 1/2" bore and are comfortable paying more than the smaller wheel.
- Choose the Carrier HD42AQ253 motor if the motor itself is the failed component and you need a 1/3 HP, 208/230 V, 1050 RPM motor.
Product notes
Carrier LA22ZA120 Blower Wheel
This Carrier Hvac genuine OEM replacement part is listed at USD 194.73 and carries the part number LA22ZA120. According to the description, it is an 11" x 11" blower wheel with a 1/2" bore, and it is new and made in the United States. It is the higher-priced blower wheel in this comparison, so it makes sense when your existing wheel matches those dimensions. The listing provides the size and bore, which are the key details you need to compare with your old part. Its limitation is that it costs about $98 more than the smaller LA22LA014 wheel, so it is not the budget choice if a smaller wheel will fit.
Carrier 336901-401 Knob
At USD 21.98, the Carrier Hvac 336901-401 knob is the least expensive part in this group. It is a genuine OEM replacement part, new, and made in the United States. The description identifies it simply as a knob, which makes it suitable for repairs that involve replacing a control knob on Carrier HVAC equipment. This is the only knob in the comparison, so there is no other listed option to weigh against it. The limitation is that it is only a knob, so it will not address issues with a blower wheel or motor. If your unit needs a rotating component, this part will not solve that problem.
Carrier LA22LA014 Blower Wheel
This Carrier Hvac genuine OEM replacement part is listed at USD 96.94 and comes with the part number LA22LA014. The description states that it is a blower wheel with a 10 3/4" diameter and 9 3/8" width, and it is new and made in the United States. It sits in the middle of the price range, making it a moderate option compared to the $21.98 knob and the $265.00 motor. Its price is also about $98 lower than the LA22ZA120 wheel, though that wheel has different dimensions. The limitation is that it is listed as a wheel only, so you will still need a compatible motor and shaft setup in your unit.
CARRIER HVAC HD42AQ253 Motor
The most expensive part in this comparison is the CARRIER HVAC HD42AQ253 replacement motor, listed at USD 265.00. It is described as a new motor with 1/3 HP, 50/60 Hz, 1 phase, rotation CCW, 208/230 V, 1050 RPM, frame 48, shaft 3.92" x 1/2", ball bearing, and belly band mounting, and it is made in Vietnam. This is the only motor among the four, so it is the one to consider when the motor is the failed component. The limitation is its price, which is the highest listed here. It is also a motor only, meaning you still need a blower wheel that fits the shaft and housing.
Final recommendation by use case
If you are replacing a control knob, the Carrier 336901-401 knob at $21.98 is the straightforward choice. If you need a mid-size blower wheel, the Carrier LA22LA014 at $96.94 offers a middle price point. If your unit requires an 11" x 11" wheel with a 1/2" bore, the Carrier LA22ZA120 at $194.73 matches that description. And if the motor itself is the problem, the CARRIER HVAC HD42AQ253 at $265.00 is the motor listed for that job. Match the component type first, then compare the listed price and dimensions to your repair need.
