When using a tankless water heater to supply hot water for your dishwasher, choosing a dishwasher that can effectively handle on-demand hot water is key. Many dishwashers come with internal water heaters that allow them to boost incoming water temperature, which is useful when paired with a tankless system that may take a moment to deliver hot water. Here are the best dishwashers for use with tankless water heaters in 2024:
1. Bosch 300 Series SHEM63W55N – Best Overall Dishwasher for Tankless Water Heaters
The Bosch 300 Series SHEM63W55N is an exceptional dishwasher with a highly efficient design, making it perfect for use with tankless water heaters. It features a built-in water heater that ensures the water reaches the optimal temperature for washing, even if the hot water from the tankless heater takes a moment to arrive. It also has PrecisionWash™ technology that adjusts the water usage based on load size, improving both energy and water efficiency.
Key Features:
- Capacity: 16 place settings
- Water Heater: Built-in water heater boosts water temperature
- Wash Programs: 5 cycles, including a Sanitize Option to kill bacteria
- Efficiency: ENERGY STAR® rated for energy and water savings
- Noise Level: Ultra-quiet at 44 dB
Pros:
- Built-in water heater complements tankless water heaters perfectly
- Energy-efficient and quiet operation
- Sanitize cycle boosts temperature for better cleaning
- Adjustable racks and large capacity
Cons:
- Higher price point than budget models
- Doesn’t dry plastic dishes as well as some other models
2. Whirlpool WDF520PADM – Best Budget-Friendly Dishwasher
The Whirlpool WDF520PADM is an affordable, reliable dishwasher that works well with tankless water heaters. Although it doesn’t have the premium features of high-end models, it has a heating element to ensure the water reaches a hot enough temperature for effective cleaning. It also features a 1-Hour Wash Cycle, which is helpful when you need to do a quick load.
Key Features:
- Capacity: 14 place settings
- Water Heater: Heating element for temperature boost
- Wash Programs: 4 cycles, including a Heavy Wash for tough loads
- Efficiency: ENERGY STAR® certified
- Noise Level: 55 dB
Pros:
- Affordable and reliable for budget-conscious buyers
- Heating element ensures water is hot enough even if tankless water takes a moment to heat up
- Good cleaning performance for the price
- Simple and easy to use
Cons:
- Fewer wash cycles and options than premium models
- Louder than high-end dishwashers
3. Miele G7106SCU – Best for Sanitize and Quick Cycles
The Miele G7106SCU is designed with high-end performance in mind, and its QuickIntenseWash cycle delivers excellent cleaning in less than an hour. With a built-in water heater and a Sanitize option, it works exceptionally well with tankless water heaters. This dishwasher’s AutoOpen drying feature also enhances drying performance by allowing air circulation at the end of the cycle.
Key Features:
- Capacity: 16 place settings
- Water Heater: Internal heater ensures optimal water temperature
- Wash Programs: 5 cycles, including QuickIntenseWash and Sanitize
- Efficiency: ENERGY STAR® rated
- Noise Level: 44 dB
Pros:
- Built-in water heater ensures hot water quickly, even with tankless systems
- QuickIntenseWash for fast and efficient cleaning
- AutoOpen drying enhances drying results
- Excellent build quality and longevity
Cons:
- Expensive compared to other models
- Longer cycle times in normal wash modes
4. LG LDP6810SS – Best Smart Dishwasher for Tankless Water Heaters
The LG LDP6810SS is a smart, feature-packed dishwasher that integrates well with tankless water heaters thanks to its QuadWash™ technology and TrueSteam® feature. It has a built-in water heater that ensures the water reaches the required temperature for a thorough clean, even if the hot water from the tankless system is slightly delayed. You can control and monitor it through the LG ThinQ® app, making it a great choice for smart home enthusiasts.
Key Features:
- Capacity: 15 place settings
- Water Heater: Built-in heating element to boost temperature
- Wash Programs: 9 cycles, including Turbo and Steam cycles
- Efficiency: ENERGY STAR® rated
- Noise Level: 44 dB
Pros:
- Built-in water heater works well with tankless systems
- Smart connectivity via Wi-Fi and the LG ThinQ® app
- TrueSteam® and QuadWash™ deliver excellent cleaning performance
- Sleek, modern design with fingerprint-resistant finish
Cons:
- Higher price point due to smart features
- Some users report difficulty syncing with the app
5. GE Profile PDT785SYNFS – Best for Large Households
The GE Profile PDT785SYNFS is a powerful dishwasher that can handle large loads, making it ideal for large families or homes with multiple daily dishwashing cycles. It includes an internal water heater to complement a tankless water heater and has Dry Boost™ technology to ensure that dishes, including plastics, are dried thoroughly at the end of the cycle.
Key Features:
- Capacity: 16 place settings
- Water Heater: Internal heater for high-temperature wash cycles
- Wash Programs: 5 cycles, including Sanitize and AutoSense for optimal cleaning
- Efficiency: ENERGY STAR® certified
- Noise Level: 42 dB
Pros:
- Internal water heater ensures consistent water temperature
- Dry Boost™ for enhanced drying, especially for plastic items
- Quiet operation
- High capacity for large families or frequent use
Cons:
- Larger size may not fit smaller kitchens
- More expensive than mid-range models
Comparison Table: Best Dishwashers for Tankless Water Heaters
| Dishwasher Model | Best For | Capacity (Place Settings) | Internal Water Heater | Wash Programs | Noise Level | Price Range |
|---|---|---|---|---|---|---|
| Bosch 300 Series SHEM63W55N | Best Overall | 16 | Yes | 5 | 44 dB | $$$$ |
| Whirlpool WDF520PADM | Best Budget Option | 14 | Yes | 4 | 55 dB | $$ |
| Miele G7106SCU | Best for Sanitize/Quick Wash | 16 | Yes | 5 | 44 dB | $$$$$ |
| LG LDP6810SS | Best Smart Dishwasher | 15 | Yes | 9 | 44 dB | $$$$$ |
| GE Profile PDT785SYNFS | Best for Large Households | 16 | Yes | 5 | 42 dB | $$$$$ |
Key Considerations for Choosing a Dishwasher with a Tankless Water Heater
- Built-in Water Heater:
- Look for a dishwasher with an internal heating element or built-in water heater. This feature ensures the dishwasher can boost the water temperature if the tankless system takes a few moments to deliver hot water. This is especially important for cycles like sanitize or heavy wash that need water temperatures of 140°F or higher.
- Cycle Time and Quick Wash:
- A quick wash cycle is useful when using a tankless water heater, as it minimizes the amount of time the dishwasher has to wait for hot water to reach the appliance. Models like the Miele G7106SCU with QuickIntenseWash are perfect for fast, effective cleaning.
- Energy Efficiency:
- ENERGY STAR® certified dishwashers like the Bosch 300 Series and LG LDP6810SS not only save water and energy but also ensure they perform well with tankless systems, which are already designed for efficiency.
- Noise Level:
- Dishwashers with a noise level below 45 dB are considered ultra-quiet, making them ideal for open-concept kitchens or homes where noise might be a concern. All the models listed above, especially the GE Profile PDT785SYNFS, operate at very quiet levels.
- Capacity:
- Depending on your household size, choose a dishwasher with a capacity that suits your needs. Larger models like the Bosch 300 Series and GE Profile are great for families, while smaller homes or apartments can opt for compact options.
Final Recommendations
- For overall performance and quiet operation, the Bosch 300 Series SHEM63W55N offers excellent cleaning with a built-in water heater, making it the best option for homes with tankless water heaters.
- If you’re looking for a budget-friendly option, the Whirlpool WDF520PADM delivers reliable cleaning and temperature control at an affordable price.
- For those who need a quick wash cycle or sanitize option, the Miele G7106SCU is ideal with its QuickIntenseWash feature.
- If you want a smart dishwasher that integrates with your home automation, the LG LDP6810SS offers Wi-Fi connectivity and high-end cleaning performance.
- For large families or frequent dishwashing, the GE Profile PDT785SYNFS is an excellent choice with its large capacity and Dry Boost™ technology.
Choosing the right dishwasher that works well with your tankless water heater ensures optimal cleaning performance, energy savings, and hot water availability.