Cove dishwashers are built for top-tier performance and long-term durability, but even luxury appliances aren’t immune to damage from freezing weather. When temperatures drop below freezing, any water left inside the system will expand, potentially cracking sensitive internal components. This leads to frustrating and expensive repairs.

If you own a seasonal property or plan to be away from your primary residence for the winter, winterizing your Cove dishwasher is a proactive step that helps prevent unnecessary damage. Below, we explain exactly how to do this simple process right. We also cover when it’s smarter to call in expert Cove dishwasher service from a trusted provider like Wilshire to keep things running smoothly.

Why You Must Winterize Your Cove Dishwasher

While Cove appliances are certainly engineered for high performance, cold weather can seriously harm the unit if it’s not properly shut down for the season.

The Risk of Skipping Winterization

When water freezes, it damages critical parts. You could face cracked water lines and valves, which cause immediate leaks and often lead to pump failure. Aside from mechanical harm, remember that electrical components aren’t designed to withstand extreme cold.

Even worse, any trapped moisture combined with cold storage invites mold growth and persistent odors that become noticeable by spring. Simply put, avoiding winterization now is rarely worth the significant repair costs later.

Clear Benefits of Winterizing

Taking steps to protect your Cove dishwasher now is a long-term investment that pays off quickly.

• Prevents costly repairs or, in the worst cases, the need for a full unit replacement.
• Extends appliance lifespan by eliminating freeze-related stress and wear.
• Ensures the unit is ready to use in perfect condition when you return in the spring.

Can a Cove Dishwasher Be Stored in an Unheated Home?

The simple answer is no. Cove dishwashers should never be stored in any area that allows the temperature to dip below 32°F (0°C). The internal mechanical and electrical systems are not rated for freezing conditions, and that kind of exposure can cause permanent, irreversible damage.

If your home won’t have temperature control during the cold months, it is absolutely critical to disconnect the unit and fully dry it out before you leave. Failure to do so could result in costly Cove dishwasher repair or even a total replacement when the spring thaw arrives.

5 Steps: How to Winterize a Cove Dishwasher

It takes very little time to protect your Cove dishwasher from winter damage. Following these simple steps can help you avoid an unexpected and urgent Cove dishwasher service call when you return in the spring.

Step 1 – Run a Final Cleaning Cycle

Select the Heavy Wash setting. Make sure the High Temp and Sani Rinse options are enabled. Run this cycle with the dishwasher completely empty. This process flushes out any residual grease, food particles, and general gunk. This helps significantly in preventing odor and residue buildup during the long storage period.

Step 2 – Disconnect Power and Water Supply

First, completely cut power to the dishwasher either at the circuit breaker or by unplugging it from the wall. Next, locate and shut off the dedicated water supply valve connected to the appliance. This is essential to stop any incoming water from freezing inside the lines.

Step 3 – Drain Remaining Water

Carefully detach the drain hose and allow all the standing water to exit the system. Use a clean sponge or a towel to soak up any last water droplets remaining in the base or tub. This step is non-negotiable for avoiding frozen components and potential pump issues.

Step 4 – Dry the Interior Thoroughly

Use a soft, dry cloth to wipe down every surface inside the dishwasher. Don’t forget the door seals and the rack runners. Once dry, leave the door slightly ajar. This vital airflow will stop mold or mildew from forming while the unit is shut down.

Step 5 – Double-Check for Moisture or Leaks

Inspect the floor area directly beneath and around the dishwasher for any lingering dampness. If you see signs of moisture, small puddles, or early corrosion, this is a red flag. Schedule a professional inspection with Wilshire immediately to address potential pre-existing issues before the deep winter sets in.

Common Winterization Mistakes to Avoid

Protecting your appliance requires you to avoid a few common shortcuts that might cause more long-term harm than good.

Never Add Antifreeze

Using RV or automotive antifreeze might seem like an easy fix, but it is a severe mistake. Cove strictly prohibits the use of antifreeze. The manufacturer states that antifreeze is poisonous, and its introduction into the system is considered a catastrophic failure that will necessitate a full unit replacement. Never attempt to use any type of antifreeze in your Cove dishwasher.

Never Store Below Freezing

Even if you successfully disconnected everything and drained the water, storing your Cove dishwasher in freezing conditions can still lead to trouble. Prolonged cold exposure can cause plastic hoses to become brittle, damage water valves, and affect sensitive electronic circuit parts.

Never Skip Drying the Interior

If you leave moisture behind, you create the perfect environment for mold, musty odors, and even rust to develop on the racks and internal metal surfaces. Always take the necessary time to dry the interior completely before you seal the door for the season.

How Proper Winterization Prevents Emergency Repairs

A little effort now saves a lot of stress and expense later.

• Frozen water lines have the potential to burst, leading to major water damage inside your home once they thaw.
• Pumps or valves that freeze solid usually require a full, costly replacement by a technician.
• Scheduling a pre-winter inspection with certified Cove technicians ensures your dishwasher is correctly sealed, fully drained, and safe for storage.

When Should You Call a Professional Like Wilshire?

Some situations require expert help, especially when the long-term performance and safety of your luxury appliance are on the line.

Before Winter Sets In

It is always a smart move to call in a professional if:

• You feel unsure about how to safely disconnect the water or power supply.
• The dishwasher has a known history of slow drainage or leaks.
• You are planning to leave the property completely unheated for the duration of the winter season.

After Winter or Before Restarting

Reach out to a service expert if:

• The dishwasher was, at any point, exposed to freezing temperatures while you were away.
• It displays error codes, refuses to start, or shows new signs of leaking after you power it back on.

Why Wilshire is the Right Choice for Cove Dishwasher Service

When you are protecting high-end appliances, real expertise and factory training truly matter.

Factory-Trained Specialists

Wilshire’s technicians are certified and specifically trained by the manufacturer to service Cove dishwashers. This guarantees precise service that strictly meets the brand’s exact, high standards.

Trusted in Luxury Appliance Care

From Sub-Zero and Wolf to Cove appliances, Wilshire specializes in high-performance kitchen systems. Every service call is handled with the highest level of care, from the initial preparation through the final cleanup.

Local, Reliable, and Responsive

Wilshire is trusted by homeowners who expect fast, professional service and long-term appliance care they can truly count on.

Frequently Asked Questions

Can I put antifreeze in my Cove dishwasher for winter storage?

No, never. It is not approved for use and will cause damage to internal components.

How do I know if my dishwasher has been damaged by freezing?

Look for new leaks, error codes, startup issues, or unusual grinding noises after turning the unit back on.

What is the safest temperature for storing a dishwasher?

Always store your Cove dishwasher in environments that stay consistently above 32°F (0°C).

Should I run my Cove dishwasher before storing it?

Yes. Running a final cleaning cycle removes food residue and prepares the unit for proper drying.

When should I call a professional for winter prep or restart?

Any time you are unsure about the steps, see signs of damage, or know your home’s temperature dropped below freezing.

Schedule Professional Cove Dishwasher Service With Wilshire

Don’t let freezing temperatures ruin your luxury Cove dishwasher. Wilshire’s factory-trained team can expertly prepare your appliance for safe winter storage or thoroughly inspect it before you start it back up in the spring. Protecting your appliance now is the smartest way to avoid expensive, major repairs later.

If you need help getting started or just want a second set of expert eyes, Wilshire is here to assist. Call Wilshire today at (818) 898-9999 or book your Cove dishwasher service online.