Ecoviva E6 600 GPD Tankless or Ecoviva 800GPD Tankless Under Sink? Which Ecoviva Model to Buy
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When comparing the ecoviva e6 600 gpd tankless vs 800gpd tankless under sink, you face a choice between speed and compactness. Both models offer tankless reverse osmosis filtration with nine stages and a 0.0001 micron membrane. The primary difference lies in output capacity and physical footprint. One unit prioritizes higher flow rates and premium certifications, while the other emphasizes a slim profile and an LED faucet for status monitoring.
Key differences
| Aspect | Ecoviva 800GPD Tankless Under Sink RO | Ecoviva E6 600 GPD Tankless RO |
|---|---|---|
| Capacity | 800 GPD | 600 GPD |
| Pure to Drain Ratio | 3:1 | 2.5:1 |
| Dimensions | 18.8" L x 17.1" W x 6.5" H | 16.5" L x 12.2" W x 5" H |
| Certification | NSF/ANSI 58, 61, 372 | NSF/ANSI 42, 58 |
| Features | Alkaline filter, noise reduction | LED-light faucet, smart indicator |
Which one should you choose?
Choose Ecoviva 800GPD Tankless Under Sink RO if
- You need a higher daily output of purified water.
- You require NSF/ANSI 61 and 372 certifications for lead-free materials.
- You want a system with a 3:1 water efficiency ratio.
Choose Ecoviva E6 600 GPD Tankless RO if
- You have a narrow cabinet space under your sink.
- You prefer a faucet with an LED status indicator.
- You want a lighter unit that weighs less.
Verdict: Choose the 800GPD model if you prioritize higher flow rates and broader certification standards. Select the E6 600GPD if your cabinet space is tight or you value the LED faucet indicator. Both provide nine-stage filtration, so the decision rests on your specific space and capacity needs.
Ecoviva 800 vs E6 600 GPD Comparison
Production capacity
The Ecoviva 800GPD Tankless Under Sink RO delivers up to 800 gallons per day, while the Ecoviva E6 600 GPD Tankless RO produces 600 gallons per day. Both models utilize a 0.0001 μm reverse osmosis membrane to achieve these flow rates. If you require higher volume output for large households or frequent cooking, the 800GPD model offers a clear advantage in daily production capacity. The E6 model still provides substantial flow, but the 800GPD unit is engineered for faster filling speeds, making it better suited for homes with higher water demand.
Water efficiency
Water efficiency differs between the two units based on their pure-to-drain ratios. The Ecoviva 800GPD Tankless Under Sink RO operates with a 3:1 ratio, meaning three gallons of pure water are produced for every one gallon of wastewater. In contrast, the Ecoviva E6 600 GPD Tankless RO achieves a more efficient 2.5:1 ratio. This means the E6 model wastes less water during the filtration process. If minimizing wastewater and conserving water is a priority for you, the E6 model holds the edge in efficiency.
Physical dimensions
Size matters for under-sink installation. The Ecoviva E6 600 GPD Tankless RO features an ultra-thin design measuring 16.5 inches wide by 5 inches deep by 12.2 inches high. The Ecoviva 800GPD Tankless Under Sink RO is larger, measuring 18.8 inches long by 17.1 inches wide by 6.5 inches high. The E6 model is significantly narrower and more compact, making it ideal for cramped cabinets or smaller kitchen spaces. The 800GPD model requires more cabinet volume, so you must verify your available space before choosing this larger unit.
Certification standards
Both systems undergo third-party testing, but they meet different certification standards. The Ecoviva E6 600 GPD Tankless RO is SGS-verified to meet NSF/ANSI 42 and 58 standards. The Ecoviva 800GPD Tankless Under Sink RO holds NSF/ANSI 58, 61, and 372 certifications. Standard 58 covers reverse osmosis performance, while 61 addresses health effects of materials and 372 covers lead-free compliance. The 800GPD model holds more comprehensive certifications, including lead-safe requirements, which may provide additional assurance regarding material safety and regulatory compliance.
Faucet features
The included faucet design varies between the two models. The Ecoviva E6 600 GPD Tankless RO comes with an LED-light faucet that features a built-in smart indicator. This indicator monitors filter usage in real-time and changes color to alert you to the filter status. The Ecoviva 800GPD Tankless Under Sink RO description does not mention an LED or smart indicator for its faucet. If you prefer visual feedback on filter health without opening the cabinet, the E6 model offers this convenient feature.
Build and noise
Build quality and operational characteristics differ slightly. The Ecoviva 800GPD Tankless Under Sink RO is designed following German engineering principles with a fully sealed structure intended to reduce vibration and operational noise. It is also noted for durability and long-term performance. The Ecoviva E6 600 GPD Tankless RO focuses on space-saving and flow rate but does not highlight specific noise reduction or sealed structural engineering in its data. If quiet operation and robust vibration control are important to you, the 800GPD model emphasizes these build qualities.
Which Ecoviva RO System Fits Your Needs
Users needing higher daily water output
The Ecoviva 800GPD model delivers 800 gallons per day, outpacing the E6 600 GPD unit. It features a 3:1 pure-to-drain ratio, which is more efficient than the E6 600 GPD 2.5:1 ratio. This system uses a 9-stage filtration process with an alkaline filter. It is designed for long-term durability with noise reduction features. Choose this if you require faster flow rates and better water efficiency for your household.
Those with tight under-sink cabinet space
The Ecoviva E6 600 GPD Tankless RO measures just 5 inches wide, making it significantly narrower than the 800GPD model. Its compact footprint allows installation in cramped cabinetry where the larger unit will not fit. It includes an LED-light faucet that monitors filter status in real time. This slim design solves storage issues without sacrificing the core 9-stage reverse osmosis filtration performance you need.
Buyers wanting a smart indicator faucet
The E6 600 GPD model comes with an LED-light faucet that provides real-time filter usage monitoring. The color changes alert you to the filter status, ensuring consistent water quality. The 800GPD model does not list this specific smart faucet feature in its specifications. If you prefer visual feedback on your system health and want a 2.5:1 water efficiency ratio, this model is the practical choice.
The products compared
Ecoviva 800GPD Tankless Under Sink RO
Best for: high-flow tankless filtration needs
- Filtration Stages
- 9
- Capacity (GPD)
- 800 GPD
- Design
- Under sink
- Pure to Drain Ratio
- 3:1
- Certification
- NSF/ANSI 58, 61, 372
- Filtration Type
- Reverse osmosis, alkaline
View on Amazon: Ecoviva 800GPD Tankless Under Sink RO Affiliate link
The Ecoviva 800 GPD tankless system delivers high flow rates with a 3:1 pure-to-drain ratio. It features a 9-stage filtration process with a 0.0001 μm membrane to remove TDS, microplastics, and heavy metals. The unit measures 18.8 by 17.1 by 6.5 inches and requires an electrical outlet. It suits households needing fast, continuous water access without storage tank constraints.
Pros
- 800 GPD capacity with 3:1 water efficiency ratio
- 9-stage filtration removes TDS, microplastics, and heavy metals
- Tankless design ensures continuous fresh water flow
- NSF/ANSI 58, 61, and 372 certified
Cons
- Requires a nearby electrical outlet for operation
- Needs two holes drilled for faucet and drain
- Large footprint may not fit small cabinets
Good fit if
- You need high daily water output for cooking
- You want to avoid storage tank bacteria risks
- You have space under the sink for a 18.8-inch unit
Skip if
- You cannot drill holes in your countertop
- You lack an electrical outlet under the sink
- You prefer a system with a built-in storage tank
Verdict: Ecoviva 800 GPD Tankless RO System offers high efficiency and fast flow for families needing large volumes of filtered water. It is ideal for kitchens with adequate space and power access.
Ecoviva E6 600 GPD Tankless RO
Best for: tight under-sink spaces and high flow
- Filtration Stages
- 9
- Capacity (GPD)
- 600
- Design
- Under sink
- Pure to Drain Ratio
- 2.5:1
- Filtration Type
- Reverse osmosis
- Contaminants Removed
- Fluoride, arsenic
View on Amazon: Ecoviva E6 600 GPD Tankless RO Affiliate link
The Ecoviva E6 is a tankless under-sink reverse osmosis system with a 600 GPD capacity. It measures just 5 inches wide, fitting into tight cabinets. The unit removes fluoride and arsenic through 9 filtration stages. You get a 2.5:1 pure-to-drain ratio and an LED-light faucet. This model suits small kitchens needing high flow without a storage tank.
Pros
- 600 GPD tankless capacity for rapid flow
- Ultra-thin 5-inch width saves cabinet space
- SGS-verified NSF/ANSI 42 & 58 standards
- 2.5:1 efficient pure-to-drain ratio
- LED-light faucet indicates filter status
Cons
- Heavier build at 17.7 pounds
- No mention of smart connectivity or app control
- Limited to fluoride and arsenic removal specs
Good fit if
- You have cramped under-sink space
- You want tankless water on demand
- You need high flow for cooking
Skip if
- You require a storage tank for backup
- You need smart home integration
- You want a lighter installation unit
Verdict: Ecoviva E6 600 GPD Tankless RO fits small kitchens where space is tight and you need fast, pure water without a bulky tank.
Specifications side by side
| Spec | Ecoviva 800GPD Tankless Under Sink RO | Ecoviva E6 600 GPD Tankless RO |
|---|---|---|
| Filtration Stages | 9 | 9 |
| Capacity (GPD) | 800 GPD | 600 |
| Design | Under sink | Under sink |
| Pure to Drain Ratio | 3:1 | 2.5:1 |
| Certification | NSF/ANSI 58, 61, 372 | not stated |
| Filtration Type | Reverse osmosis, alkaline | Reverse osmosis |
| Contaminants Removed | TDS, microplastics, heavy metals | Fluoride, arsenic |
| Installation Type | Under sink | Under sink |
| Features | Tankless, fully sealed, noise reduction | LED-light faucet, tankless |
| Micron Rating | 0.0001 μm | 0.0001 μm |
| Capacity | 800 GPD | 600 GPD |
| Use | not stated | Kitchen |
| Color | White | Black |
| Dimensions | 6.5 × 18.8 × 17.1 inches | 5 × 16.5 × 12.2 inches |
| Weight | 20.7 pounds | 17.7 pounds |
| Size | RO 800GPD | not stated |
| Model | RO800G | EWP-E6 |
Frequently asked questions
Which Ecoviva model is smaller for under sink installation?
The Ecoviva E6 600 GPD Tankless RO is the more compact choice. It measures 16.5 inches in width and 12.2 inches in height. The 800GPD model is larger, with dimensions of 18.8 inches wide and 17.1 inches high. If your under sink cabinet has limited space, the E6 fits more easily.
Does the Ecoviva 800GPD have a tankless design?
Yes, the Ecoviva 800GPD Tankless Under Sink RO features a tankless design. This means it produces water on demand without storing it in a bulky pressure tank. You get fresh filtered water directly from the tap, which saves under cabinet space and ensures you always have a full supply ready for use.
What is the color of the Ecoviva E6?
The Ecoviva E6 600 GPD Tankless RO comes in a black finish. This color option may blend well with darker kitchen fixtures or cabinets. In contrast, the Ecoviva 800GPD model is available in white. You can choose the color that best matches your existing kitchen decor and aesthetic preferences.
Is the Ecoviva 800GPD NSF Certified?
Yes, the Ecoviva 800GPD Tankless Under Sink RO is NSF Certified. This certification verifies that the system meets specific standards for material safety and performance. It provides assurance that the filtration components are safe for contact with drinking water. The E6 600 GPD model does not list this certification in its data.
Which system includes an alkaline filter?
The Ecoviva 800GPD Tankless Under Sink RO includes an alkaline filter. This feature helps balance the pH level of your filtered water. The Ecoviva E6 600 GPD Tankless RO does not list an alkaline filter in its attributes. If you prefer alkaline water, the 800GPD model is the better option.
How much does the Ecoviva 800GPD weigh?
The Ecoviva 800GPD Tankless Under Sink RO weighs 20.7 pounds. This weight accounts for the internal components and housing of the larger unit. The E6 600 GPD model is lighter at 17.7 pounds. The difference in weight is minor but may matter if you need to move the unit during installation.
Can the Ecoviva E6 handle high flow needs?
The Ecoviva E6 600 GPD Tankless RO is designed for high flow needs. It produces 600 gallons per day, which is sufficient for most households. Its compact size allows it to fit in tight under sink spaces while still delivering fast water flow. It is ideal for kitchens where space is limited but speed is important.
What is the pure to drain ratio for the 800GPD?
The Ecoviva 800GPD Tankless Under Sink RO has a pure to drain ratio of 3:1. This means for every three gallons of pure water produced, one gallon is sent to the drain. This ratio indicates efficient water usage. The E6 600 GPD model has a different ratio of 2.5:1, which is slightly less efficient.

