Norcold Refrigerator Cooling Unit Fan | 639702 | N7/N8/N10

Keep your Norcold RV refrigerator performing at its best with the Norcold Refrigerator Cooling Unit Fan Assembly (Part #639702). Direct replacement 12V DC cooling fan for Norcold N7, N8, and N10 Polar Series refrigerators — maintains proper airflow and cooling efficiency, meaningful for consistent temperature regulation even in warm ambient conditions. Compact square design in durable black finish.

⭐ Essential for Peak Performance in Hot Weather

Standout value: this fan is essential for peak refrigerator performance in hot ambient temperatures. Meaningful benefits when working correctly:

• Consistent temperature regulation even in warm conditions
• Prevents overheating of the cooling unit
• Extends refrigerator lifespan by reducing thermal stress

Highly recommended — a smart part to keep on hand as a spare while traveling. Refrigerator failures on the road are difficult and expensive to service; a spare fan is cheap insurance.

Compatible Norcold Refrigerator Models

Direct fit for the following Polar Series models (letters and numbers listed after the main model number don't affect fitment):

• N7X
• N7XF
• NA7
• N8X
• N8XF
• NA8
• N10 series

What This Does

The cooling unit fan maintains proper airflow across the refrigerator's cooling unit — meaningful for the absorption cooling process, especially in hot ambient conditions where passive convection alone isn't sufficient. When the fan fails, cooling performance degrades rapidly and the refrigerator may not hold temperature.

Different Norcold Series?

For Norcold 1200, 1210, or 2118 series refrigerators, see the Norcold Refrigerator Cooling Fan (637154) — different-series alternative. Cooling fans are not interchangeable between refrigerator families.

Related Norcold Refrigerator Service Parts

Other Norcold service parts in the catalog:

• Norcold Top Hinge Bracket + Cover Kit (640029) — Polar Series N8 top hinge (SN 29460085+)
• Norcold Freezer Door Panel Retainer (638536) — Polar Series N7/N8/N10/NA10 freezer door panel
• Norcold Refrigerator Control Panel Assembly (51023 / was 641592) — for N8DC/N10DC DC compressor variants
• Norcold Service Control Housing Kit (640091) — control housing for N10DC family

Dimensions

• Width: 4-11/16"
• Height: 4-11/16"
• Depth: 1-1/2"

Electrical Specifications

• Voltage: 12V DC

Cross-Reference Part Numbers

• Part Number: 639702

Black Finish

⚠️ Professional Installation Recommended

Installation involves accessing the refrigerator cooling unit area, disconnecting the failed fan, and installing the replacement with correct wiring polarity. Installation should be performed by a qualified RV service technician unless you have prior experience with Norcold refrigerator service.

Genuine Norcold / Thetford OEM

Key Features

• Genuine Norcold / Thetford OEM refrigerator cooling unit fan assembly
• Part number: 639702
• 12V DC
• For Norcold N7, N8, N10 Polar Series (N7X, N7XF, NA7, N8X, N8XF, NA8, N10 series)
• ⭐ Essential for peak performance in hot ambient temperatures
• Recommended as a spare to keep on hand while traveling
• Prevents overheating and extends refrigerator lifespan
• Compact square design: 4-11/16"W × 4-11/16"H × 1-1/2"D
• Black finish

Specifications

• Brand: Norcold / Thetford
• Part Number: 639702
• Type: RV Refrigerator Cooling Unit Fan Assembly
• Voltage: 12V DC
• Function: Maintains airflow across refrigerator cooling unit for consistent temperature regulation
• Compatible Models: N7X, N7XF, NA7, N8X, N8XF, NA8, N10 series (letters/numbers after main model number don't affect fitment)
• Width: 4-11/16"
• Height: 4-11/16"
• Depth: 1-1/2"
• Color: Black