Wolf Gas Cooktop Recall 2021: Burner Valve Leak

What Is Recalled#

What Is the Risk?#

The burner valve stem seal can degrade over time, allowing a small amount of gas to leak from around the control knob when the burner is on or off. Sub-Zero Group received 7 reports of gas odor near the knob area.

This is a critical safety hazard. If your Sub-Zero cooktop is affected, take immediate action as described below. Do not delay — gas leaks can lead to explosion, fire, or carbon monoxide exposure. CPSC recall remedies are always free — there is no reason to postpone.

Affected Models#

The following Sub-Zero model numbers are included in this recall. Check your model number on the rating plate and compare it against this list:

Important: This list may not be exhaustive. Some recalls are updated after the initial announcement to add newly identified model numbers. Always verify your specific model and serial number with Sub-Zero directly or on the CPSC recall notice.

Official Remedy#

Free in-home replacement of all burner valve assemblies with updated seal design. Wolf factory-certified technicians perform the service. Repair takes approximately 60-90 minutes due to the number of valves.

Key points about the recall remedy process:

• The repair, replacement, or refund is completely free — you pay nothing for parts or labor.
• You do not need the original receipt for CPSC recalls. The model and serial number are sufficient to verify eligibility.
• The recall applies regardless of whether you are the original purchaser. Second owners, tenants, and landlords are all eligible.
• CPSC recalls never expire. Even if this recall was announced years ago, you can still get the free repair if your unit was never serviced.
• If the manufacturer does not respond within 30 days, file a complaint at SaferProducts.gov or call CPSC at 1-800-638-2772.

What To Do#

If your Sub-Zero cooktop model number matches the list above, take these steps immediately:

1. Check if your Wolf cooktop model starts with CG
2. Sniff near the control knobs when burners are off — any gas odor indicates a stem leak
3. Contact Sub-Zero/Wolf at 1-800-222-7820 for the free repair
4. Only Wolf factory-certified technicians should perform gas valve work on Wolf cooktops

Gas Leak Safety in the Home#

Natural gas leaks from appliances are among the most dangerous household hazards because natural gas is explosive at concentrations between 5% and 15% in air. A slow leak from a defective gas valve or connection can accumulate to explosive levels in enclosed spaces — such as the cabinet area behind a gas range or the utility closet around a gas dryer. The odorant (mercaptan) added to natural gas provides the characteristic rotten-egg smell as a warning, but this odor can fade in long-duration leaks or in poorly ventilated spaces.

For [Sacramento](/sacramento/sacramento)-area homeowners, PG&E provides free gas leak detection and emergency response at 1-800-743-5000, available 24 hours a day. If you smell gas from your Sub-Zero cooktop, whether or not it is related to this recall, evacuate the home without operating light switches or electrical devices, and call PG&E from outside. Never attempt to locate or repair a gas connection yourself unless you hold a California C-36 plumbing license or C-20 HVAC license.

Frequently Asked Questions#

How do burner valve stem seals fail?#

Burner valve stems rotate inside the valve body, sealed by O-rings or packing material. Over time, heat from the burner (radiating upward through the cooktop) degrades these seals. As the seal material hardens and cracks, gas can seep around the stem. The leak is often very slow — detectable by smell but not by sound. High-BTU burners (like Wolf professional burners at 20,000 BTU) generate more heat near the valve, accelerating seal degradation.

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Worried about your cooktop? Our certified technicians can inspect your Sub-Zero cooktop, verify recall status, and ensure safe operation. Book a safety inspection at /book.