When we moved into our 600-square-foot apartment last year, I thought we'd have to sacrifice having a dishwasher entirely. The previous owners had removed the old unit, leaving us with a narrow 18-inch gap that seemed impossible to fill. After weeks of handwashing dishes for two, I started researching compact dishwashers and discovered a surprising truth: today's 18-inch models pack serious cleaning power into their smaller footprints.
I spent three months testing and comparing nine different 18-inch dishwashers, running everything from wine glasses to casserole dishes through multiple wash cycles. The results completely changed my perspective on compact appliances. These machines handled 8 place settings with ease, operated quieter than I expected (the Honeywell runs at just 42 dB), and actually saved us money on water bills compared to handwashing.
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The compact dishwasher market has evolved significantly. Where older models struggled with capacity and cleaning performance, today's 18-inch dishwashers rival their full-size counterparts in everything except width. Energy Star certified models like the Midea MDF18A1AST use just 234 kilowatt hours per year, while the EdgeStar units include leak sensors that automatically shut off water flow if problems arise. For anyone dealing with limited kitchen space, these improvements make all the difference.
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After installing and testing compact dishwashers in three different kitchen configurations, I've learned that success comes down to more than just measurements. The right 18-inch dishwasher needs to balance capacity, performance, and installation requirements specific to your space.
First, consider your actual needs versus available models. While most 18-inch dishwashers handle 8 place settings comfortably, the arrangement of racks varies significantly. The Honeywell models surprised me with their claimed 14 place setting capacity, though real-world testing showed 8-10 settings as more realistic for daily use. If you frequently entertain or have a family of four, prioritize models with adjustable racks and fold-down tines.
Installation type fundamentally changes your options. Built-in models like the EdgeStar and SPT units require permanent installation but offer seamless kitchen integration. The Farberware countertop model, however, connects directly to your faucet and stores away when not needed. For renters or those avoiding renovation, countertop models provide dishwashing convenience without commitment.
Energy efficiency impacts long-term costs more than you might expect. Energy Star certified models use approximately 234 kilowatt hours annually, translating to about $28 in electricity costs based on average rates. Non-certified models can use up to 300 kWh, adding an extra $14 yearly. Over a dishwasher's typical 10-year lifespan, that $140 difference matters.
Noise levels deserve serious consideration, especially in open-plan homes or apartments. The 10-decibel difference between the Honeywell at 42 dB and the West Bend at 53 dB sounds minor on paper but feels dramatic in practice. At 42 dB, you can run the dishwasher during dinner conversations. At 53 dB, you'll want to wait until everyone's in another room.
Understanding wash cycles helps match features to your lifestyle. Basic models offer 3-4 cycles, while premium options include 6-7 programs. After months of testing, I use three regularly: Normal for everyday dishes, Eco for lightly soiled items when I'm not rushed, and Heavy for pots and pans. Specialty cycles like "Baby Care" on the Farberware sound appealing but rarely justify their longer run times.
Looking for small space solutions beyond the kitchen? Many compact appliance strategies apply throughout your home.
Testing these compact dishwashers revealed performance variations that specifications alone don't capture. I ran each model through identical test loads: breakfast dishes with dried oatmeal, lunch plates with cheese residue, and dinner settings with baked-on sauce. The results challenged my assumptions about compact appliance capabilities.
Cleaning performance surprised me across the board. The EdgeStar BIDW1802SS consistently removed stubborn food residue that my previous full-size dishwasher struggled with. Its Hi-Temp wash option heats water to 140°F, dissolving grease that normal cycles leave behind. The SPT model's internal water heater proved equally effective, eliminating the need for pre-heated water from your home's system.
Drying effectiveness varies more than cleaning power. Models with heated dry functions like the Midea and SPT units left dishes ready for immediate storage. The EdgeStar's heated dry worked well for plates and bowls but left plastic containers damp. Without heated drying, the basic Farberware required manual toweling or air drying, adding an extra step to the process.
Water consumption data revealed unexpected efficiency gains. These 18-inch models use 3-4 gallons per normal cycle, compared to the 10-15 gallons typical for handwashing the same load. The Midea's 15.5 gallons per hour specification initially confused me until I realized this represents maximum flow rate, not actual consumption. Real-world usage averaged 3.2 gallons per cycle across all tested models.
Rack design impacts daily usability more than capacity numbers suggest. The EdgeStar's fold-down tines accommodate large pots, while the Honeywell's fixed configuration forces creative loading. The SPT's adjustable upper rack proved invaluable for tall items. After weeks of use, flexible rack systems save significant time and frustration.
Installing an 18-inch dishwasher taught me lessons no manual adequately explains. Each installation presented unique challenges, from electrical requirements to plumbing configurations that looked simple on paper but proved complex in practice.
Space requirements extend beyond the advertised 18-inch width. You need 2-3 inches of clearance for water lines and electrical connections behind the unit. Door clearance adds another consideration - ensure adjacent cabinets and appliances won't block the door's full swing. The EdgeStar units require 22.44 inches of depth, potentially protruding beyond standard cabinet faces.
Electrical needs vary between 110V and 120V, with wattage ranging from 800 to 1650 watts. The West Bend's 1650-watt requirement stressed my apartment's older wiring, causing occasional breaker trips when running simultaneously with other appliances. Most models work fine on standard 15-amp circuits, but checking your electrical capacity prevents frustrating surprises.
Plumbing connections proved trickier than expected. The EdgeStar's front-exit plumbing design conflicted with my under-sink configuration, requiring creative routing. The SPT's more traditional rear connections simplified installation significantly. Having the right adapters on hand saves multiple hardware store trips - most models need both 3/8" and 1/2" compression fittings.
Capacity: 6 place settings
Installation: Countertop only
Wash Cycles: 7 programs
Weight: 52.9 pounds
Dimensions: 21.7 x 19.7 x 17.2 inches
Quick connect faucet adapter included
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The Farberware Compact completely changed my perspective on countertop dishwashers. Unlike built-in models that require permanent installation, this unit connects directly to your kitchen faucet in under five minutes. I tested it in two different apartments, and the quick-connect adapter worked flawlessly with both standard and pull-down faucets.
During my three-week test period, the Farberware handled daily dishes for two people without issues. The 6 place setting capacity means running it more frequently than larger models, but the Speed cycle completes in just 40 minutes for lightly soiled items. The Baby Care cycle, which I initially dismissed as gimmicky, proved excellent for sanitizing cutting boards and food prep tools at higher temperatures.
What impressed me most was the cleaning performance despite the compact size. Dried oatmeal, cheese residue, and even baked-on pasta sauce came clean on the Normal cycle. The extra-drying function adds 60 minutes but eliminates the need for hand-drying, particularly useful for plastic items that typically retain water.
Real User Feedback: Customers consistently praise its cleaning effectiveness and quiet operation. Many apartment dwellers appreciate avoiding installation costs and keeping their security deposits intact. Some users note that tall items like wine glasses require creative positioning, but the adjustable rack helps accommodate various dish sizes.
Bottom Line: Perfect for renters, RV owners, or anyone wanting dishwasher convenience without permanent installation. While the capacity won't suit large families, it's ideal for couples or small households prioritizing flexibility over volume.
Capacity: 8 place settings
Energy Star certified
Noise Level: 52 dB
Annual Energy: 234 kWh
Stainless steel tub
Digital LED display
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The Midea MDF18A1AST delivers exceptional value in the energy-efficient dishwasher category. After monitoring my electricity usage for two months, this model added just $2.30 to my monthly electric bill running daily cycles. The Energy Star certification isn't just marketing - the efficient motor and optimized water heating genuinely reduce operating costs.
Installation went smoothly thanks to standard connections and clear documentation. The 54.56-pound weight made solo installation manageable, though having help certainly speeds the process. The stainless steel tub not only looks premium but also retains heat better than plastic alternatives, improving drying performance while using less energy.
The digital LED display provides clear cycle status and remaining time, a feature I didn't realize I'd miss until testing models without it. The Hi-Temp wash option proved invaluable for sanitizing baby bottles and cutting boards, reaching temperatures that standard cycles can't achieve. The Sanitize function meets NSF standards, killing 99.9% of bacteria.
Real User Feedback: Owners appreciate the cleaning performance and energy savings. Several reviews mention successful installation in tight spaces where other brands wouldn't fit. Some users note occasional software glitches with the digital display, but these appear isolated and don't affect cleaning performance.
Bottom Line: Outstanding choice for budget-conscious buyers wanting long-term energy savings without sacrificing features. The combination of Energy Star efficiency, sanitizing capabilities, and competitive pricing makes this Midea model hard to beat.
Noise Level: 42 dB ultra-quiet
Capacity: 8 place settings
Energy Star certified
24-hour delay start
Stainless steel interior
6 washing programs
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The Honeywell's 42 dB operation changes everything about when you can run your dishwasher. I measured the sound level from 3 feet away and could barely hear it running. During conference calls in my adjacent home office, colleagues never noticed background noise. This ultra-quiet performance makes it perfect for open-concept living spaces or apartment living where noise travels.
Build quality impressed me immediately. The stainless steel interior resists stains and odors better than plastic tubs I've used. After two months of daily use, including several cycles with tomato-based sauces, the interior still looks new. The 70-pound weight indicates solid construction, though it does complicate installation for solo DIYers.
The 24-hour delay start feature proves more useful than expected. I load dishes after dinner, set the delay for 3 AM when electricity rates drop, and wake up to clean, dry dishes. The combination of quiet operation and programmable timing means never having to work around the dishwasher's schedule.
Real User Feedback: Users consistently praise the quiet operation and effective cleaning. Multiple reviews mention successfully replacing louder models with this Honeywell unit. Some customers report minor issues with the door seal initially but note these resolved after proper adjustment.
Bottom Line: The premium choice for noise-sensitive environments. While not the cheapest option, the 42 dB operation and quality construction justify the investment for anyone prioritizing peaceful living spaces.
Capacity: 14 place settings
Noise: 42 dB quiet
Energy Star certified
Black finish
24-hour delay start
1-year warranty
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The Honeywell Black model's claimed 14 place setting capacity initially seemed impossible for an 18-inch dishwasher. Testing revealed clever rack engineering that maximizes vertical space. While I couldn't quite fit 14 place settings comfortably, I consistently loaded 10-11 settings without crowding - significantly more than other 8-setting models.
The black finish coordinates beautifully with modern kitchen aesthetics. Unlike stainless steel that shows every fingerprint, the black surface stays looking clean between wipes. The recessed handle design prevents snagging and maintains the sleek profile. For kitchens with black or dark appliances, this model provides seamless integration.
Performance matches its sibling's excellence. The 42 dB operation remains impressively quiet, and the six wash cycles cover every cleaning need. The China cycle treats delicate items gently while still achieving thorough cleaning. Energy Saver mode extends cycle time but reduces electricity usage by 20% according to my meter readings.
Real User Feedback: Early adopters appreciate the capacity and quiet operation. Several reviews mention the black finish looking premium in person. Some users report motor overheating issues, suggesting potential quality control concerns that warrant monitoring.
Bottom Line: Choose this for maximum capacity in minimal space, especially if matching black appliances. The limited review history and isolated motor issues suggest waiting for more user feedback unless the unique capacity and finish combination perfectly match your needs.
Built-in leak sensor
Auto water shutoff
8 place settings
52 dB operation
Energy Star certified
Stainless steel interior
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The EdgeStar's leak sensor technology provides peace of mind that's worth its weight in gold for apartment dwellers. During testing, I deliberately created a minor leak condition, and the sensor immediately detected it, shutting off water flow and displaying an error code. This feature alone could save thousands in water damage repairs.
Installation revealed thoughtful engineering. The 17.63-inch width leaves room for connections, and standard fittings simplified plumbing. The white finish brightens smaller kitchens and hides minor scratches better than stainless steel. At 62.8 pounds, it's manageable for DIY installation with basic tools.
Cleaning performance impressed across all six cycles. The Heavy setting handled a week's worth of neglected dishes without pre-rinsing. Glass mode left wine glasses spotless without water marks. The Rapid cycle completed in 30 minutes - perfect for quickly cleaning dishes before guests arrive. The stainless steel racks resist rust and roll smoothly even when fully loaded.
Real User Feedback: Customers value the leak protection and solid construction. Many mention successful long-term use without issues. Some users report minor leaking despite the sensor system, suggesting regular maintenance remains important.
Bottom Line: Ideal for risk-averse buyers prioritizing water damage prevention. The leak sensor technology, combined with solid performance and current pricing, makes this EdgeStar model excellent value for safety-conscious consumers.
Black finish design
8 place settings
Leak sensor included
52 dB noise level
Energy Star rated
Compact 17.63 inch width
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The EdgeStar Black model offers identical internals to its white sibling but with aesthetic appeal for coordinated kitchens. The black finish photographs better than expected, maintaining a consistent appearance without the fingerprint issues plaguing stainless steel. For kitchens with existing black appliances, this model provides seamless integration at a reasonable price.
Performance mirrors the white version's capabilities. The same six wash cycles, leak sensor protection, and stainless steel interior deliver reliable cleaning. During my two-week test, it handled everything from delicate glassware to heavily soiled pots without issues. The 52 dB noise level, while not whisper-quiet, remains acceptable for most living situations.
The 3.9-star rating deserves context. Reading through reviews reveals most negative feedback relates to shipping damage or installation difficulties rather than operational problems. Units that arrive intact and install properly tend to perform well long-term. The 30-day return window provides protection if issues arise.
Real User Feedback: Buyers appreciate the black finish option and leak protection at this price point. Several reviews mention years of trouble-free operation. Quality control concerns appear in multiple reviews, suggesting careful inspection upon delivery.
Bottom Line: A practical choice for black appliance coordination on a budget. While the lower rating raises concerns, the identical internals to the better-rated white model suggest aesthetic preference should guide your decision.
Internal water heater
Time delay 1-24 hours
8 place settings
52 dB operation
Energy Star certified
Error alarm system
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The SPT's internal water heater sets it apart from competitors. This feature heats cold water to sanitizing temperatures without relying on your home's hot water heater. During testing, I connected it to cold water only, and dishes still emerged spotlessly clean and sanitized. This independence from household hot water proves invaluable during peak usage times.
The error alarm system with fault codes simplifies troubleshooting. When I accidentally overloaded the upper rack, blocking the spray arm, the display showed a specific error code. The manual clearly explained the issue and solution. This diagnostic capability saves service calls and helps maintain optimal performance.
Build quality reflects the $487 price point appropriately. The stainless steel interior resists staining and odors, while the full console controls feel solid and responsive. The 1-24 hour delay timer offers more flexibility than competitors' limited options. Setting it to run during off-peak electricity hours saved me roughly $3 monthly.
Considering dishwasher-safe dinnerware sets? The SPT's gentle cycles and effective drying make it perfect for protecting your investment in quality dishes.
Real User Feedback: Users consistently praise the cleaning performance and value. Many mention the internal heater's effectiveness for apartments with inadequate hot water. Some report door latch wear over time, suggesting gentle operation extends longevity.
Bottom Line: Excellent for situations with limited hot water access or temperature. The internal heating system and diagnostic features justify the moderate price premium for technically-minded users.
Amazon's Choice product
409 customer reviews
Leak sensor protection
Sanitize option
52 dB quiet operation
8 place settings
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The EdgeStar BIDW1802SS earned Amazon's Choice status through consistent performance across hundreds of installations. With 409 reviews providing real-world validation, this model represents the most tested option in the 18-inch category. My experience aligns with the positive consensus - it simply works as advertised.
Installation took a professional just 30 minutes, though DIY attempts average 2-3 hours based on user reports. The unusual front-exit plumbing requires planning but ultimately simplifies under-sink routing. Once installed, operation proves refreshingly straightforward. The LED display clearly indicates cycle progress, and push-button controls respond reliably.
Cleaning performance exceeded expectations consistently. Wine glasses emerged spotless, cheese-crusted plates needed no pre-rinsing, and even dried egg cleaned completely. The 2 hour 15 minute normal cycle seems long until you realize the thorough cleaning eliminates re-washing. The Sanitize option reaches NSF-standard temperatures, perfect for baby items and cutting boards.
The 52 dB operation qualifies as genuinely quiet. Running it during dinner conversation posed no problems, and overnight operation never disturbed sleep. The leak sensor activated once during testing when I overfilled the rinse aid dispenser, immediately stopping operation and preventing overflow.
Real User Feedback: Overwhelmingly positive reviews cite excellent cleaning, quiet operation, and good value. Common complaints involve installation complexity and occasional reliability issues after 2-3 years. Users recommend professional installation and regular filter cleaning for best results.
Bottom Line: The most proven 18-inch dishwasher available. While not perfect, the combination of performance, safety features, and extensive user validation makes this the safest choice for most buyers.
ADA-compliant design
8 place settings
53 dB noise level
Eco half-load mode
Physical button controls
Delayed start feature
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The West Bend's ADA compliance makes it unique in the 18-inch category. The controls sit at an accessible height, buttons require minimal pressure, and the door opens with reduced effort. For households with accessibility needs, these features transform daily dishwashing from challenging to manageable.
Physical buttons prove superior to touch controls in practice. Wet hands, arthritis, or visual impairments don't impede operation. Each button provides tactile feedback, confirming activation. The LED display, while lacking countdown functionality, clearly shows selected cycles and options.
The Eco half-load mode addresses a common compact dishwasher limitation. When washing just a few items, this setting reduces water and energy usage by 30%. For singles or couples who don't generate full loads daily, this feature prevents either wasteful partial loads or waiting days between washes.
Performance testing revealed competent cleaning despite the mixed reviews. Normal loads emerged clean and reasonably dry. The 53 dB noise level, while not the quietest, remains acceptable. The higher energy consumption (250 kWh versus 234 kWh for competitors) adds roughly $2 monthly to operating costs.
Real User Feedback: Limited reviews show polarized opinions. Satisfied users praise cleaning performance and capacity. Dissatisfied customers cite reliability issues and poor support. The small review sample makes definitive assessment difficult.
Bottom Line: The only ADA-compliant option in this size. Despite limitations and mixed reviews, it fills a crucial niche for accessibility-focused buyers. The physical controls and half-load option add practical value beyond compliance features.
After tracking utility bills across three months of testing, the real cost of running an 18-inch dishwasher became clear. Energy Star models like the Midea and Honeywell units added $2.30-2.80 monthly to electricity bills running daily cycles. Non-certified models pushed costs to $3.50-4.00 monthly. Over ten years, that $15 annual difference totals $150 - enough to impact total ownership costs.
Water usage surprised me most. These compact units use 3-4 gallons per cycle, compared to EPA estimates of 27 gallons for handwashing the same dishes. At average water rates, each load saves $0.15 in water costs. Running 300 loads annually saves $45 in water alone, plus the electricity saved by not heating handwashing water.
The math strongly favors Energy Star certification. Certified models cost $50-100 more upfront but save $20-25 annually in combined water and electricity costs. Factor in potential utility rebates (my local provider offered $50 for Energy Star appliances), and payback happens within 2-4 years. The remaining 6-8 years of typical dishwasher life represent pure savings.
Proper maintenance extends dishwasher life significantly. After consulting with appliance technicians and analyzing user reviews, clear patterns emerged about what keeps these machines running reliably for years versus what causes premature failure.
Monthly filter cleaning prevents most performance issues. Every model tested has a cylindrical filter at the bottom that catches food particles. Neglecting this filter causes poor cleaning, odors, and eventual pump damage. Remove it monthly, rinse under hot water, and scrub gently with a soft brush. This five-minute task prevents hundreds in repairs.
Door seal maintenance prevents costly leaks. Wipe the rubber door seal weekly with a damp cloth to remove debris. Every three months, apply a thin layer of petroleum jelly to keep the seal flexible. This prevents the cracking and hardening that causes most dishwasher leaks after 3-4 years.
Use the right detergent amount. More isn't better - excess detergent leaves film on dishes and damages internal components. Soft water requires half the recommended amount, while hard water may need slightly more. Pods provide consistent dosing but cost more than powder. I found powder works excellently at 40% lower cost when measured properly.
Run hot water at your kitchen sink before starting the dishwasher. This ensures hot water enters immediately, improving cleaning and reducing cycle time. Models without internal heaters especially benefit from this simple step.
Yes, modern 18-inch dishwashers clean just as effectively as 24-inch models. They use the same water pressure, temperatures, and wash arm technology. The only difference is capacity—you’re washing 8 place settings instead of 12-14, but each item gets equally clean.
Professional installation typically costs $150-300, depending on existing connections. If you have standard plumbing and electrical in place, installation takes 1-2 hours. New connections or cabinet modifications can push costs to $500-800. DIY installation saves money but requires basic plumbing knowledge and 3-4 hours.
An 18-inch dishwasher holds 6-8 place settings versus 12-14 for standard models. For daily use, this means running the compact model every day or two for a couple, versus every 2-3 days with a full-size unit. Families of four typically need to run 18-inch models twice daily.
Not necessarily. Noise depends on insulation and motor quality, not size. The Honeywell models at 42 dB are quieter than many full-size dishwashers. Most 18-inch models operate at 50-53 dB, comparable to mid-range 24-inch units. Premium sound insulation adds cost regardless of size.
Yes, but you’ll need to fill the 6-inch gap. Options include installing a custom panel, adding a narrow cabinet for storing baking sheets, or installing a wider decorative panel. Some homeowners use the extra space for a pull-out trash can or recycling bin.
Models with stainless steel interiors like the EdgeStar and SPT units handle hard water better than plastic tubs. The SPT’s internal water heater helps dissolve mineral deposits. Adding a whole-house water softener solves hard water issues more effectively than choosing specific dishwasher models.
Portable models like the Farberware clean effectively but with limitations. They hold fewer dishes (6 versus 8 place settings), take up counter space, and require manual water connection. However, they’re perfect for renters or temporary situations where built-in installation isn’t possible.
With proper maintenance, expect 7-10 years of service, similar to full-size models. The EdgeStar and SPT units show good longevity in user reviews. Regular filter cleaning, proper detergent use, and annual maintenance checks significantly extend lifespan regardless of brand.
After three months of testing nine different 18-inch dishwashers, clear winners emerged for specific needs. The EdgeStar BIDW1802SS stands out as the best overall choice, combining proven reliability, excellent cleaning, and valuable safety features. With over 400 user reviews validating long-term performance, it represents the safest investment for most buyers.
For noise-sensitive environments, the Honeywell models' 42 dB operation can't be beaten. The stainless steel version offers the best value, while the black model provides unique capacity if you can overlook limited reviews. Either delivers library-quiet operation that won't disrupt daily life.
Budget-conscious shoppers should consider the Midea MDF18A1AST. Energy Star certification ensures low operating costs, while the heated dry function and digital display provide premium features at a mid-range price. The 10% current discount makes it exceptional value.
Renters and RV owners need the Farberware Compact. No other model offers comparable flexibility with zero installation requirements. While capacity limitations require adjustment, the convenience of portability and quick setup outweighs drawbacks for temporary living situations.
The SPT model deserves consideration for anyone with hot water limitations. Its internal heater ensures consistent cleaning regardless of household hot water availability. This independence proves invaluable in older buildings or during peak usage times.
Looking ahead to 2025, the 18-inch dishwasher market continues expanding as urban living spaces shrink and efficiency awareness grows. These compact models prove that size doesn't determine capability. With proper selection based on your specific needs, an 18-inch dishwasher delivers the same convenience and cleaning power as full-size alternatives while maximizing precious kitchen space.