Choosing the right dishwasher can be overwhelming with so many types and features available. Our editorial team compared specifications, buyer feedback and key decision factors to help you find the best model for your home. This guide covers everything from types and capacity to noise levels and installation.
Types of Dishwashers
There are three main types of dishwashers: built-in, portable, and drawer. Each suits different kitchen layouts and lifestyles.
- Built-in dishwashers: The most common type, installed under the counter. They offer full-size capacity (24 inches) or compact (18 inches). They require plumbing and electrical connections. Best for permanent kitchens.
- Portable dishwashers: Freestanding units on wheels that connect to the kitchen faucet. No installation needed. Ideal for renters or small kitchens. They usually have a smaller capacity (8 to 10 place settings).
- Drawer dishwashers: Single or double drawers that pull out like a drawer. They are compact and can be installed in islands or tight spaces. Double drawers allow washing two loads separately. They cost more per place setting.
Consider your kitchen space, whether you own or rent, and how often you entertain. Built-in models offer the best value and performance for most households.
Key Features to Consider
Modern dishwashers come with a range of features that affect cleaning performance, convenience, and noise.
Noise Level
Noise is measured in decibels (dBA). Lower is quieter. A dishwasher rated 44 dBA or lower is nearly silent. 45-50 dBA is quiet enough for conversation. Above 50 dBA may be disruptive in open kitchens. Look for models with sound insulation if quiet operation is important.
Wash Cycles
Standard cycles include Normal, Heavy, Light, and Rinse. Additional cycles like Sanitize (kills bacteria), Eco (saves water/energy), and Quick (30-60 minutes) add flexibility. Some models have a ProWash or sensor cycle that adjusts soil sensing.
Third Rack
A third rack sits above the top rack and holds flat items like spatulas, lids, and large utensils. It frees up space on lower racks. Many newer dishwashers include it, but it is not essential. It can be a separate cutlery tray or a full-width rack.
Drying Technology
Heated drying uses a heating element but can warp plastics. Condensation drying (or fan-assisted) is gentler and more energy-efficient. Some models have a heated dry boost option. Stainless steel tubs help retain heat for better drying.
Other Features
- Adjustable racks: Fold-down tines, height-adjustable top rack for bulky items.
- Soil sensors: Automatically adjust cycle time and water usage.
- Delay start: Set the dishwasher to run later (e.g., at night).
- Child lock: Prevents accidental cycle changes.
- Wi-Fi connectivity: Control and monitor via smartphone app.
Capacity and Size
Dishwasher capacity is measured in place settings. A place setting includes a dinner plate, salad plate, bowl, glass, cup, saucer, and flatware. Standard 24-inch built-in dishwashers hold 12 to 16 place settings. Compact 18-inch models hold 8 to 10. Drawer dishwashers hold about 6 to 8 per drawer.
For a family of four, 12 place settings is usually enough. If you cook frequently or host gatherings, consider 14 or more. Measure your under-counter space: standard cutout is 24 inches wide, 24 inches deep, and 34.5 inches high (adjustable legs). Compact models fit 18-inch wide spaces.
Energy Efficiency
Look for the ENERGY STAR label. Energy Star certified dishwashers use about 12% less energy and 30% less water than non-certified models. Annual energy cost is typically $30 to $40. Water usage ranges from 3 to 6 gallons per cycle. Efficient models have soil sensors and eco cycles. Also check the Energy Guide label for estimated yearly cost.
Using the Eco cycle and running full loads saves the most energy. Avoid pre-rinsing dishes; modern dishwashers handle food residue well.
Installation Considerations
Built-in dishwashers require a dedicated electrical circuit (120V, 15-20 amp), a hot water supply line, and a drain connection. Most homes have a pre-installed rough-in. If replacing an old unit, ensure the new one fits the existing cutout. Portable dishwashers need only a nearby faucet and a standard outlet. Drawer dishwashers require similar connections as built-in but may need a custom cabinet cutout.
Hire a licensed plumber/electrician if you are not experienced. Some retailers offer installation services. Check if your model includes a power cord or if you need to buy one separately.
Final Checklist
Use this checklist when shopping for a dishwasher:
- Measure your kitchen space (width, depth, height).
- Decide on type: built-in, portable, or drawer.
- Choose capacity: 12-16 place settings for most families.
- Set a noise level target: 44-48 dBA for quiet operation.
- Look for ENERGY STAR certification.
- Select must-have cycles: Normal, Heavy, Quick, Sanitize.
- Consider a third rack if you wash many utensils.
- Check drying technology: condensation or fan-assisted.
- Verify adjustable racks and tines for flexibility.
- Read buyer reviews for reliability and performance.
- Check the current price on Amazon to compare models.
By following this guide, you can confidently choose a dishwasher that fits your needs and budget. Happy shopping!