How Does Excess Humidity Damage Commercial Kitchen Equipment?

Though commercial kitchens are built to handle hustle and heat, humidity is a silent troublemaker that can take down the toughest equipment. If moisture levels creep too high, units like your refrigerator and electronics will start to feel the strain. Luckily, Once you understand how excess humidity can affect your commercial kitchen equipment, you can stop the potential damage before it starts.

Why is Humidity a Big Deal in Commercial Kitchens?

Dishwashers, steamers and boiling pots all generate moisture within a commercial kitchen. But if those cause humidity to rise beyond the 30-50%, it creates the perfect storm for costly downtime, food-safety risks and equipment failure.

Corrosion: The Slow, Steady Equipment Killer

High humidity causes an acceleration of rust on the following:

• Stainless steel surfaces


• Internal components in ovens, fryers, and steamers


• Hinges, screws, and fasteners


• Refrigeration coils and frames

Avoiding corrosion is important because it can cause weakened structural integrity and lead to your unit breaking down faster. Even stainless steel can discolor when exposed to moisture consistently.

Electrical Failures and Short Circuits

Humidity is a no-go for electronics as moisture can infiltrate:

• Control boards


• Touchscreens


• Wiring harnesses


• Sensors and thermostats

Moisture inside of electrical components can cause erratic behavior, shorts and even total system shutdowns.

Common symptoms to watch out for:

Flickering displays, inconsistent temperatures, random shutdowns, or error codes.

Refrigeration Overload and Ice Buildup

When humidity enters a unit, it’ll work overtime. Here are just a few things that can happen:

• Moist air enters the unit


• Moisture freezes on evaporator coils


• Ice buildup restricts airflow


• Compressors run longer and hotter

In the end, it all leads to reduced efficiency, higher energy bills and eventual failure of the unit, which can be an expensive repair.

Cooking Equipment Performance Drops

Though most steamers, fryers and ovens are designed to withstand a specific amount of moisture, too much humidity can:

• Cause inconsistent results


• Throw off temperature calibration


• Slow down cook times


• Trigger error codes in smart appliances

Mold, Mildew, and Food‑Safety Risks

Excessive moisture also means mold. Mold can grow on a variety of places including:

• Inside refrigeration gaskets


• On walls and ceilings


• Around prep stations


• Inside equipment drip pans

How Do You Protect Your Equipment from Humidity Damage?

While you can’t completely eliminate moisture in a fast-paced kitchen, you can control it! Here are a few ways to do so:

• Improve ventilation


• Maintain HVAC and dehumidifiers


• Keep doors closed


• Inspect gaskets and seals


• Schedule preventive maintenance


• Use equipment as designed