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Multiple models matched. Select your model to confirm fit.

Furnace flame sensor. The flame sensor monitors the burner to detect whether or not a flame is present. If the flame sensor is defective, the furnace may not heat.

Limit switch

Elbow

Furnace control board. The control board regulates the supply of power to the furnace components. Be sure to check more commonly defective parts before replacing the control board.

Main Control Board HK42FZ061. Genuine manufacturer's replacement part for furnaces and air handlers. It's crucial for their repair and proper functioning, ensuring the systems operate smoothly and efficiently. The board is compatible with a range of Carrier, Bryant, and Payne models.

Blower wheel for draft inducer motor 4" Diameter 1.5" Width

Carrier furnace control board, The control board regulates the supply of power to the furnace components. Be sure to check more commonly defective parts before replacing the control board.

Limit switch 140-180F

Condensate trap

Grommet, motor mounting bracket. Sold as a single grommet but we suggest purchasing three since there are 3 holding the motor in place, and it’s a good practice to change all of them while the assembly is taken apart.

Filter door

Transformer, 120V-24V 40VA

Door switch

Gasket kit for draft inducer motor

Clip
Your Carrier air handler is the workhorse that moves conditioned air through your home — whether heating or cooling. When it fails, comfort fails fast. Repair Clinic stocks genuine OEM Carrier air handler parts including blower motors, capacitors, control boards, limit switches, and heating element assemblies.
Common Carrier air handler failures point to the same core parts across the FV4 and FB4 series. A failed blower motor means no airflow; a blown capacitor means the motor won't start or runs slow and hot. Control boards handle sequencing and safety interlocks. Limit switches protect against overheating. We carry exact OEM replacements so you get the fit and performance Carrier engineered into your system.
Browse all Carrier air handler parts by entering your model number above. We ship same-day for in-stock OEM parts — because every day without conditioning air matters.
Carrier and Bryant are sister brands under Carrier Corporation, and they share engineering and many parts. However, part numbers often differ — a Carrier FV4 motor may have a different part number than the equivalent Bryant model. Always enter your exact model number to confirm the right part, because Carrier's communicating Infinity systems require precise control boards and sequencers that vary by brand nameplate.
Repeated shutoffs usually mean the limit switch is tripping. That switch is a safety device — it shuts everything down if the air handler detects overheating. The real cause is often blocked airflow: a clogged filter, closed vents, or a failing blower motor. Check your filter first. If the filter is clean and the blower is running, the limit switch itself may have failed and need replacement. A stuck or failed limit switch can lock the system into shutdown even when the air is cool.
Look for the model number on the metal nameplate attached to the air handler cabinet — usually on the side or front panel near the top. The model number format is typically FV4xxxx or FB4xxxx, sometimes followed by additional digits or letters. Once you have it, enter it in the Repair Clinic search box — the tool will confirm your model and display every compatible part, blower motor through limit switch, so you never order the wrong assembly.
In almost all cases, you can replace the blower motor alone. The motor is bolted or mounted to the air handler frame, and it's one of the most commonly replaced parts. If your motor has failed (no spin, grinding noise, or locked rotor), an OEM Carrier replacement motor will restore airflow without replacing the entire unit. Parts like capacitors, control boards, and limit switches are equally replaceable — air handlers are modular systems designed for repair.


Ordering Carrier air handler replacement parts online is easy at Repair Clinic. Simply search by model or part number to find the exact parts you need. We offer an large inventory of genuine OEM Carrier parts to ensure the reliable operation of your HVAC system. Whether you need replacement filters, blower motors, or other essential parts, we've got you covered.
Take advantage of our No-Hassle 365-Day Returns, which allow you to return uninstalled parts within one year of purchase. With our Price Match Guarantee, you can rest assured that you're getting competitive pricing on genuine Carrier parts. We offer same-day shipping on orders placed by 9:00 PM ET, so you can get your replacement parts delivered promptly.
Whether you're a homeowner looking to repair your Carrier air handler or a professional technician, Our online repair library provides the videos, guides, and diagrams to support the repair. Browse our full range of Carrier air handler parts to keep your HVAC system running smoothly all year round.
On Carrier air handlers, look for the model number on the metal nameplate attached to the cabinet, usually on the side or front panel near the top. You may need to open the access panel to see it clearly. Copy the complete model number, including any letters and numbers, then type it into our model number lookup so the catalog narrows to parts made for your unit. The model number applies to the entire air handler, not just a blower motor, capacitor, control board, or another individual part. Using it filters the full Carrier air handler parts selection to compatible parts, helping you avoid mismatched replacements and get the repair moving faster.

Diagnosing a Carrier Air Handler problem is easier when you have the right online reference material. Repair Clinic's video library, written repair guides, symptom articles, part testing walkthroughs, and exploded-view diagrams work together to guide you from the symptom to the correct part. Model number lookup confirms the exact OEM replacement so you order right the first time.

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