Investigating Condensation on the Kitchen Counter

Why Condensation Forms Under the Counter

Condensation on the kitchen counter from a dishwasher typically results from warm, moisture-rich air meeting cooler surfaces. During or after a wash, steam can exit when the door is opened or via designed ventilation. If that warm air contacts a cool countertop or cabinet underside, it can condense into visible droplets. This is more noticeable after high-temperature cycles or in kitchens kept cool by air conditioning, and may appear as steam coming from the dishwasher vents at the end of the cycle.

Humidity in the room also matters. After cooking, boiling water, or using multiple appliances, indoor relative humidity can rise, bringing air closer to its dew point. Even a slight temperature difference at the underside of the counter can lead to condensation. Improving airflow—using an exhaust fan, increasing overall ventilation, and ensuring air can circulate around the dishwasher—helps lower ambient humidity and reduce moisture formation, especially if you frequently notice condensation on the kitchen counter after dishwasher use.

Installation details influence how and where moisture settles. Gaps in the cabinet cutout, misaligned or worn door gaskets, and insufficient insulation can let warm, moist air escape and reach cool cabinet frames or counters. Installing the dishwasher per JennAir specifications—leveling the unit, ensuring a proper door seal, maintaining required clearances, and using the correct toe-kick and insulation—helps direct heat and moisture through intended pathways. If moisture persists, inspect the door seal for damage, confirm the vent path is unobstructed, and verify your setup matches your model’s Use & Care and Installation Instructions. Noticing steam coming out of dishwasher areas beyond the intended vent may indicate a sealing or installation issue.

Ways to Lessen Condensation from Your Dishwasher

Concerned about condensation on the kitchen counter from the dishwasher? The following installation, use, and care tips can help manage moisture and protect cabinetry and worktops:

• Prioritize a correct installation: Ensure your JennAir dishwasher is level and aligned so the door closes tightly. A secure door seal and properly set hinges keep steam contained during and after cycles. Check that the vent and airflow paths are clear and that side and under-counter clearances meet the specifications in your model’s Installation Instructions. 
• Install a moisture barrier: if the dishwasher sits directly beneath a countertop overhang, consider installing an approved JennAir moisture barrier to shield the underside of the counter. These steps help limit steam coming out of dishwasher vents from contacting cool surfaces and forming droplets. The moisture barrier accessory (Part Number 4396277) is available from your dealer to protect your countertop.
• Use effective drying options: Select a cycle and drying feature designed to reduce residual moisture, such as Heated Dry, Extended Dry, Open Door Dry, or Fan Dry (availability varies by model). For stainless-steel tub models, a rinse aid promotes water sheeting and reduces droplets that can vent as steam at the end of the cycle. After completion, wait a few minutes before opening the door to allow internal condensation to settle, then crack the door open slightly to vent moisture away from adjacent surfaces. This can reduce condensation on the kitchen counter from dishwasher drying and minimize noticeable steam from the dishwasher openings when the door is first opened.
• Manage indoor humidity: Run your kitchen exhaust fan during and shortly after dishwasher operation to move humid air out of the room. Keep household humidity within the recommended range (about 30%–50%) to limit moisture collecting on cooler countertop surfaces. Wipe any visible moisture promptly to prevent it from spreading. 

Replacement parts can be purchased at JennAir Purchase Genuine Parts.