Sub-Zero 4204790 Replacement Defrost Heater – SVCE

Sub-Zero

4204790

222.50

The Sub-Zero 4204790 Replacement Defrost Heater is a genuine OEM heating element designed specifically for the Sub-Zero 648PRO refrigerator. This heater plays a critical role in the automatic defrost cycle by melting frost from the evaporator, maintaining proper airflow and stable internal temperatures.
A failed defrost heater can cause heavy ice accumulation, reduced cooling performance, temperature fluctuations, and excessive compressor runtime. Replacing the heater restores proper defrost operation and helps protect the refrigeration system from long-term damage caused by restricted airflow.
Manufactured to Sub-Zero factory specifications, this replacement defrost heater ensures reliable performance, correct wattage, and proper fit in compatible PRO-series units.

⚠️ If you are uncertain about compatibility with your model, please provide your unit’s serial number for verification.

Not the part You’re Looking For?

Explore our full Sub-Zero Spare Parts Catalog for a wide selection of genuine Sub-Zero parts. Whether you’re looking for another control board, gasket, or any other part, we've got you covered!

Return to the Sub-Zero Parts Catalog

Explore popular guides such as:

Comprehensive Guide to Replacing Sub-Zero Refrigerator Door Gaskets

Learn how to replace the door gasket on your Sub-Zero refrigerator with our step-by-step guide. Maximize your refrigerator’s efficiency and ensure a tight seal for optimal cooling.

Sub-Zero Repair & Maintenance Guides

Complete guides to replacing and installing replacement parts for Sub-Zero refrigerators and appliances. Learn how to properly replace gaskets, filters and other parts with our step-by-step instructions.

Sub-Zero Ice Maker Troubleshooting Guide – Comprehensive Solutions for Common Ice Maker Issues

Complete guide to troubleshooting Sub-Zero ice makers. Includes solutions, steps, and a link to our catalog for easy ice maker replacement if needed.

Step-by-Step Guide to Testing the Water Inlet Solenoid Valve for Sub-Zero Ice Makers

Learn how to test the water inlet solenoid valve in your Sub-Zero ice maker to ensure optimal functionality. Follow our diagnostic guide and find genuine Sub-Zero replacement valves.

How to Diagnose Cooling Issues in Sub-Zero Refrigerators: Troubleshooting the Condenser Fan Motor (Part #4200740)

Learn how to diagnose cooling issues in your Sub-Zero refrigerator. A non-functioning condenser fan motor (Part #4200740) is a common cause of poor cooling. Follow our guide to diagnose the issue and find replacement parts.

How to Check Sub-Zero Switches: A Comprehensive Guide

Learn how to inspect and troubleshoot switches in your Sub-Zero appliances. This step-by-step guide ensures your refrigerator or freezer operates at peak performance.

How to Locate Your Sub-Zero Appliance Serial Number | SubZeroParts.com

Find out how to easily locate the serial number on your Sub-Zero appliance with our comprehensive guide. Identifying your model is crucial for finding the right parts.

When to Replace Your Sub-Zero Refrigerator Compressor | Signs & Solutions

Is your Sub-Zero refrigerator not cooling properly? Learn the key signs of compressor failure, how to diagnose the issue, and find original Sub-Zero compressors for replacement.

Regular Maintenance for Sub-Zero Refrigerators

Begin by discussing why regular maintenance is essential for the longevity and efficiency of a Sub-Zero refrigerator. Mention the benefits of maintenance, such as energy savings, improved performance, and extended appliance life.

How to Locate and Replace Your Sub-Zero Water Filter | SubZeroParts.com

Easily find and replace the water filter in your Sub-Zero refrigerator, freezer, or ice maker. Our detailed guide helps ensure your appliance delivers clean, fresh-tasting water with optimal performance.

Quick Links
Before proceeding with your purchase, please make sure to review our policies:

RETURN POLICY

Personal Data Processing Policy

Terms

Shipping Policy

Your order

Complete Your Order for Sub-Zero & Wolf Replacement Parts with Confidence
Please provide your details below to finalize your order. Our team ensures prompt processing and shipping for all genuine Sub-Zero & Wolf parts. If you need assistance with your order, feel free to contact our customer support.

name

Your phone

Country

Your address

City

State

ZIP Code

Shipping Options

We partner with trusted carriers such as USPS, UPS and FedEx. Choose the option that best suits your needs: (* Prices are valid for the USA only. International shipping is calculated individually).

Standard (5-7 business days) -14$

Priority (3-5 business days) - 23$

Express (2-3 business days) - 45$

I confirm that all the information provided is correct

I confirm that I have verified the model and serial number for compatibility.

It seems like you're unsure about the model or serial number. To ensure you receive the correct part, we strongly recommend verifying this information before placing your order. You can find the serial number on your appliance using our guide jump to the manual. If you need further assistance, please contact us, and our team will help you find the correct part for your Sub-Zero appliance.

Promo code

Secure Payment, Fast Shipping & Return Policy Reminder
After submitting your order, you will receive a confirmation email with your order details. All orders are processed within 1–2 business days in accordance with our Shipping Policy. We offer fast and reliable shipping to ensure you receive your Sub-Zero part as quickly as possible.
Please note:

Returns are accepted within 30 days for unopened, unused items.
Opened packages are subject to a 20% restocking fee and must be pre-approved.
Electronic parts (e.g., control boards, panels) are non-returnable once opened.
Shipping costs (to and from) will be deducted from refunds, with a minimum of $28.

By placing your order, you agree to our return and shipping policies.