A dishwasher leak is one of those issues that instantly interrupts the flow of your kitchen and your day. When you suddenly notice water pooling beneath your appliance, it’s normal to wonder whether you’re dealing with a quick fix or a sign that it’s time for an upgrade. The reality is a dishwasher leaking from bottom can stem from a variety of issues, some minor and some far more serious, so there will be some investigating that needs to be done.
If you want to know “Why does my dishwasher leak?” how much repairs cost, and whether it’s smarter to repair or replace, we have the answers! In the guide, we break down the common causes of a dishwasher leaking from bottom, explain how to fix a leaking dishwasher, help you troubleshoot leaking dishwasher problems, and show you when to replace dishwasher models that are no longer worth repairing.
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Shop Dishwashers5 Reasons for a Dishwasher Leaking from Bottom
A dishwasher leaking from bottom can be caused by a range of parts and components that wear out over time. Understanding the reasons a dishwasher leaks helps you quickly figure out what to do if a dishwasher is leaking, when you can handle a repair on your own, and when it’s time to call for leaky dishwasher repair.
Here are five reasons your dishwashing machine is leaking and their solutions.
A Faulty Dishwasher Float Switch
A dishwasher float switch is a small but essential component that prevents a dishwasher from overfilling. As water enters the tub, the float rises until it triggers the float switch, signaling the dishwasher when to stop filling. When the float switch fails, a dishwasher may overfill to the point that your dishwasher is leaking underneath the unit.
A malfunctioning float switch can cause flooding inside the dishwasher, so if you’ve been wondering, “Why is my dishwasher leaking from underneath?”, this component is often a top culprit.
How to Repair a Float Switch:
First, you need to locate the float switch. On most models, the float switch sits beneath the lower rack inside the tub and can usually be accessed by removing the bottom kick plate. While skilled homeowners might be able to DIY the job, we recommend professional service because the float switch works together with the water inlet valve. Incorrect installation can cause further leaks or even electrical issues.
Dishwasher Float Switch Repair Cost:
A float switch itself is generally inexpensive, but labor determines the total cost. Homeowners can expect anywhere from $90–$190 to repair a float switch, depending on the dishwasher model and service rates.
Broken Dishwasher Drain Hose
The drain hose carries wastewater from the dishwasher to your home’s plumbing. If the hose cracks, loosens, or wears out from age, it can cause a steady drip or stream of water below the appliance—one of the most common causes of a dishwasher leaking from bottom.
Drain hose issues can also happen when food debris builds up inside the hose, putting pressure on weak points until they split.
How to Repair a Dishwasher Hose:
If you’re comfortable working behind the dishwasher and shutting off water and power, replacing a drain hose can be a DIY project. However, because dishwashers are heavy, built-in, and often difficult to move without damaging floors or cabinets, many homeowners prefer professional help.
Dishwasher Hose Repair Cost:
According to HomeGuide, drain hose replacement typically costs $80–$180, depending on accessibility and whether the dishwasher must be fully removed from the cabinetry.
Damaged Dishwasher Pump
A dishwasher pump forces water through the spray arms during wash cycles and then drains water out at the end. When the pump housing cracks or its seals wear out, leaks develop beneath the unit. Pump leaks may start small but often worsen quickly, so it’s important to notice the signs before major leaks happen.
If you’ve been researching how to fix dishwasher leak issues, specifically after high-pressure wash cycles, the pump is likely the reason.
How to Repair a Dishwasher Pump:
Pump repair is an advanced job best left for the pros. Especially since it involves electrical connections, hoses, seals, and motor components that are well beyond DIY repair. We recommend calling a professional for this one.
Dishwasher Pump Repair Cost:
Repairing or replacing a dishwasher pump usually costs between $100–$400, depending on the model and whether the entire pump assembly needs replacement.
Learn More: How Long Do Dishwashers Last?
Old Dishwasher Door Gasket
The door gasket forms a watertight seal around the dishwasher door. Over time, this rubber lining can dry out, warp, or crack. When that happens, water escapes around the edges, resulting in leaks.If you notice your dishwasher leaks only during the wash cycle, not drain cycle, the gasket is a likely suspect.
How to Repair a Dishwasher Gasket:
This is one of the simplest dishwasher repairs. The old gasket pulls out, and a new one presses into place. Homeowners who enjoy tackling small household projects often handle this repair themselves. Just ensure you purchase the correct gasket for your model.
Dishwasher Gasket Repair Cost:
Dishwasher door gasket replacement ranges from $50–$125, making it one of the most affordable fixes that doesn’t require a new upgrade.
Clogged Dishwasher Filter
A dishwasher filter traps debris, preventing food particles from recirculating in a wash. But if you haven’t cleaned a dishwasher filter, debris builds up and obstructs water flow. Pressure inside the unit then forces water through weak points, causing breaches that often result in a dishwasher leaking from bottom.
How to Repair a Clogged Dishwasher Filter:
Learning how to repair a clogged dishwasher filter is simple. Remove the bottom rack, twist out the filter assembly, rinse it thoroughly, and reinsert it. If the dishwasher still leaks afterward, the clog may have caused secondary damage, in which case professional service is recommended.
Dishwasher Filter Repair Cost:
Cleaning the filter is free if you do it yourself. If a technician is needed because of deeper blockages or damage, costs usually fall between $90–$175.
How to Prevent Dishwasher Leaks
Preventing leaks begins with routine maintenance. Start by cleaning a dishwasher filter regularly, checking the door gasket for dryness or cracks, and inspecting the drain hose for kinks or wear. Running cleaning cycles with dishwasher-safe cleaners can also help keep internal parts functioning at peak performance.
Avoid overloading the appliance, since tall items can block the spray arms and force water into unwanted areas. Finally, monitor your dishwasher’s age and performance; older units are more susceptible to leaks, worn seals, and internal deterioration.
When to Replace a Leaky Dishwasher
Deciding whether to repair or replace leaking dishwasher units can feel overwhelming, but a few guidelines make the choice clearer.
First, consider the age. If your dishwasher is 10–12 years old, repairs may only offer short-term relief. Newer models are far more efficient and come with features that save energy, water, and time.
The next biggest factor when deciding between dishwasher repair vs replace is considering the cost. Most experts recommend following the 50/50 rule: If an appliance repair costs more than 50% of the price of a new dishwasher, replacement is the smarter investment.
Finally, consider convenience. Repairs can sometimes take several days to schedule and complete, leaving you without a dishwasher. If you rely on your appliance daily, purchasing a new unit may be the fastest solution.
At Arizona Appliance & Home, we make replacement easy with rebates, discount dishwashers, and a wide selection of top-rated brands. Whether you’re looking for luxury performance, energy efficiency, or an affordable upgrade, we offer some of the best dishwasher deals in Arizona.
Learn More: Monogram Dishwasher Review: Experts Weigh In
Shop Reliable Dishwashers at Arizona Appliance & Home
When it’s time to replace your broken dishwasher, you can find a model with better features and energy efficiency. Take a look at these top-rated dishwashing machines from Arizona Appliance & Home.
GE Profile 24” Fingerprint Resistant Stainless Steel Top Control Built In Dishwasher
Shop This GE Profile Dishwasher
This GE Profile dishwasher delivers high-performance cleaning with standout technology like Microban Antimicrobial surfaces that stay 99% cleaner for longer-lasting protection. Upgrades include the Dry Boost mode and Deep Clean Silverware Jets for superior drying and sparkling clean utensils. With SmartHQ Wi-Fi capabilities, it’s perfect for homeowners who prefer remote control, cycle notifications, and machine-learning improvements over time.
The addition of Active Flood Protect provides peace of mind for households concerned with leaks. Overall, it’s ideal for busy families who want powerful cleaning, smart automation, and reliable leak protection in a premium-feeling appliance.
⭐Featured GE Profile PDT715SYVFS Review:
“Very quiet. Would not even know it was running. Love the features of this deluxe model.”
LG 24” Stainless Steel Look Front Control Built In Dishwasher
The LG LDFC2423V is built for durability and convenience, offering Dynamic Dry for faster, more complete drying and a NeveRust stainless steel tub that resists corrosion. Auto Leak Detection adds worry-free protection, immediately stopping the cycle if water is detected. Front controls and LED display make it user-friendly, while Auto Cycle takes the guesswork out of washing. This model is ideal for homeowners who want dependable performance and long-lasting construction.
⭐Featured LG LDFC2423V Review:
“Purchased this in December and delivered in the New Year, I love it! The dishes and pots are super squeaky clean. The turbo cycle is my favorite; it’s fast and furious. Glad I purchased, you’ll be glad too.”
Bosch 800 Series 24” Fingerprint Resistant Stainless Steel Top Control Built-In Dishwasher
This Bosch 800 Series dishwasher is engineered for ultra-quiet operation at just 42 dBA. Top features include the RackMatic and the redesigned EasyGlide system provide smooth loading and exceptional flexibility for tall items, cookware, and delicate stemware. ENERGY STAR efficiency ensures lower energy bills without sacrificing performance. Overall, the SHP78DM5N is a perfect pick for homeowners who value whisper-quiet operation, precision engineering, and premium build quality.
Whirlpool 24” Fingerprint Resistant Stainless Steel Top Control Built In Dishwasher
Shop This Whirlpool Dishwasher
With more than 4,600 perfect ratings, this Whirlpool dishwasher promises dependable performance with features like an adjustable second rack, folding tines, and a three-piece silverware basket to maximize space. The leak detection system adds important protection by flashing alerts and draining water if moisture is detected.
With multiple cycles—including Sensor, Quick Wash, Heavy, and Soak & Clean—it adapts to your dishwashing needs with ease. The fingerprint-resistant exterior keeps your kitchen looking clean with less effort. At less than $1,000, this is a major value standard households will get plenty of use out of.
⭐Featured Whirlpool WDTA50SAKZ Review:
“Love the hidden buttons, no big handle and third rack. Also, this dishwasher is so much sturdier than our old one and SO much quieter.”
Maytag 24” Fingerprint Resistant Stainless Steel Top Control Built-In Dishwasher with PowerBlast Cycle and PowerDry
This Maytag dishwasher delivers serious cleaning power. It comes with the exclusive PowerBlast Cycle that tackles heavy messes effortlessly, while Dual Power Filtration eliminates the need for scrubbing or pre-rinsing. The MaxTub design offers one of the largest-capacity tubs on the market, making it perfect for large households or frequent cooks.
With a durable stainless steel tub and a 10-year limited parts warranty, this model is built for long-term reliability. Optional Open Air Dry and advanced drying technology ensure cabinet-ready dishes straight from the dishwasher. It’s a great match for homeowners who want near-commercial-grade cleaning power, massive capacity, and long-lasting construction.
⭐Featured Maytag MDPS7024SZ Review:
“I have had this dishwasher for a few weeks and am impressed how quiet it is. It cleans very well even with my hard water.”
Café 24” Fingerprint Resistant Stainless Steel Top Control Built In Dishwasher
This Café dishwasher delivers premium customization with adjustable racks, flexible loading zones, and customizable hardware options. UltraWash and Dual Convection Ultra Dry ensure powerful cleaning and exceptional drying for everything from fine china to pots and pans. With Active Flood Protect and quiet 44 dBA operation, it suits homes where performance and peace of mind matter. Overall, it’s ideal for design-focused homeowners who want luxury features, flexibility, and smart capabilities.
⭐Featured Cafe CDT858P2VS1 Review:
“We love our cafe’ dishwasher. It offers multiple cycle choices, it runs quietly, has 2 upper racks, is large capacity and energy efficient. We purchased the matte white finish and it’s really pretty.”
KitchenAid 24” PrintShield Stainless Steel Front Control Built-In Dishwasher with 40+ Total Wash Jets
Shop This KitchenAid Dishwasher
KitchenAid combines powerful cleaning with more than 40 targeted wash jets for thorough coverage across every rack. Its ProDry System and Automatic Door Open Dry provide exceptional drying results, while sensors like ProWash optimize each cycle based on soil level. The interior stainless steel tub boosts durability and heat retention, and adjustable racks enhance loading flexibility. Operating at a quiet 41 dBA, it’s perfect for open-concept kitchens. This dishwasher is ideal for cooks who use a wide range of dishware and want a premium design and high performance.
⭐Featured KitchenAid KDFS324SPS Review:
“This is the best dishwasher we ever had. You literally cannot hear it, even standing next to it. It cleans so well, and the extra shelf for small things is perfect! It has that KitchenAid upscale look too. We couldn’t be more pleased. It was a mid-range price with a top range quality.”
GE Dry Boost 24” Fingerprint Resistant Stainless Top Control Built In Dishwasher
This GE dishwasher offers excellent capacity with a third rack and an adjustable upper rack for bottles, platters, and tall items. Dry Boost gets plastics up to three times drier, while AutoSense optimizes cycles automatically. With a hard food disposer and powerful wash performance, it handles tough dish loads without pre-rinsing. Active Flood Protect adds essential leak-prevention features. We recommend it for families who want convenience, strong cleaning, and enhanced capacity at an excellent value.
⭐Featured GE GDT595HYYFS Review:
“Minimal noise, efficient and effective, clean look and easy to operate. Great dishwasher.”
Learn More: 8 Best GE Dishwasher Models
A leaking dishwasher can be stressful, but understanding the most common causes—and knowing when to repair or replace—can make the process far more manageable. From faulty float switches to worn gaskets and aging pumps, the key is identifying the issue early and choosing the solution that best fits your home, budget, and long-term needs.
Now that you know how to repair a leaky dishwasher and you decide it’s time for an upgrade, Arizona Appliance & Home offers an extensive selection of reliable, high-performance dishwashers along with expert guidance to help you find the perfect fit. Visit us today to explore top brands, compare features, and bring home a dishwasher that delivers lasting peace of mind.
Learn More: Ranking the Best Dishwasher Brands for Every Budget
Why Trust Arizona Appliance & Home?
At Arizona Appliance & Home, we're committed to providing the best selection and service to our customers. Whether you're a homeowner embarking on a remodel, a builder, or a designer, we have the expertise and resources to meet your needs.
With showrooms in Scottsdale, Tucson, and Phoenix, including a dedicated builder design center, we've proudly served the Arizona community since 1944. Visit one of our appliance showrooms to explore an unparalleled collection of refrigerators, dishwashers, cooking, laundry, and outdoor appliances.
Shop Dishwashers Arizona Appliance & Home
Our team of experts are more than just appliance professionals – they're skilled, knowledgeable, and wonderful to work with. With years of experience under their belts, they understand how each appliance works and are passionate about helping customers make informed decisions. Whether you have questions about dishwashers or to learn whether a dishwasher leaking from bottom is worth saving, our team is always happy to lend their expertise and provide personalized guidance. Contact us today to see how we can help you find the perfect appliance for your home.
Learn More: 7 Best Quiet Dishwasher Brands