# TLDR Review: EcoSmart ECO 11 Water Heater

*Published: 2026-07-05 | Updated: 2026-07-05 | Source: https://shopsavvy.com/reviews-tldr/ecosmart-eco-11-water-heater*

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## Product: EcoSmart ECO 11 Water Heater
**Brand:** EcoSmart

## Pros
- Small size and lightweight design make it easy to install in tight spaces.
- Energy-efficient due to patented self-modulating technology, reducing electricity bills.
- Capable of providing hot water for one shower in cold climates or two in warmer regions.
- Well-suited for small households, supporting multiple fixtures with better pressure.
- Consistently heats water quickly and maintains temperature with manual adjustments.
- Provides continuous hot water without the risk of running out like traditional tanks.
- Backed by a limited lifetime warranty, offering reassurance for residential use.
- Simple electrical requirements allow for straightforward installation if you’re familiar with wiring.
- Looks sleek and unobtrusive, fitting into various locations easily.
- Good value for the price compared to larger or traditional water heating options.

## Cons
- Installation typically requires a professional electrician and plumber, increasing upfront costs.
- Demands a dedicated 60-amp double-pole breaker and #6 AWG wiring; not suitable for standard wiring setups.
- Can produce a humming noise and electrical interference, especially affecting nearby induction appliances.
- Limited flow rate at higher temperature rises; may struggle with simultaneous multiple hot water demands.
- Some users reported temperature fluctuations during usage, especially with fluctuating water pressure.
- Might not be suitable for larger households or multiple bathrooms due to flow limitations.
- Requires careful attention to proper connection installation; leaks can occur if washers and fittings are overlooked.
- Installation cost can be significant, averaging around $500-$700.
- Water temperature can drop if other fixtures are used simultaneously, requiring manual adjustments.
- May experience issues with scale buildup over time, though installing a filter can help mitigate this.

## Bottom Line

The EcoSmart ECO 11 is a solid choice for small households or individual use, especially if space and energy savings matter. It offers reliable, on-demand hot water with an easy-to-spot size, making it a convenient upgrade from traditional tank heaters. However, it’s best to be prepared for professional installation and to ensure your electrical system can support its requirements. If you need a solution for larger households or multiple bathrooms, you might want to explore higher-capacity models or those with a greater flow rate.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Small size and lightweight design make it easy to install in tight spaces. | Installation typically requires a professional electrician and plumber, increasing upfront costs. |
| Energy-efficient due to patented self-modulating technology, reducing electricity bills. | Demands a dedicated 60-amp double-pole breaker and #6 AWG wiring; not suitable for standard wiring setups. |
| Capable of providing hot water for one shower in cold climates or two in warmer regions. | Can produce a humming noise and electrical interference, especially affecting nearby induction appliances. |
| Well-suited for small households, supporting multiple fixtures with better pressure. | Limited flow rate at higher temperature rises; may struggle with simultaneous multiple hot water demands. |
| Consistently heats water quickly and maintains temperature with manual adjustments. | Some users reported temperature fluctuations during usage, especially with fluctuating water pressure. |
| Provides continuous hot water without the risk of running out like traditional tanks. | Might not be suitable for larger households or multiple bathrooms due to flow limitations. |
| Backed by a limited lifetime warranty, offering reassurance for residential use. | Requires careful attention to proper connection installation; leaks can occur if washers and fittings are overlooked. |
| Simple electrical requirements allow for straightforward installation if you’re familiar with wiring. | Installation cost can be significant, averaging around $500-$700. |
| Looks sleek and unobtrusive, fitting into various locations easily. | Water temperature can drop if other fixtures are used simultaneously, requiring manual adjustments. |
| Good value for the price compared to larger or traditional water heating options. | May experience issues with scale buildup over time, though installing a filter can help mitigate this. |

## Current Prices

| Retailer | Price | Availability |
|----------|-------|-------------|
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| R.P. Lumber Company | $259.99  | In Stock |
| Allendale True Value | $265.00  | In Stock |
| Market America Brands / Shop.com | $267.61  | In Stock |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*