Looking for eco friendly hot water solutions that reduce energy use without sacrificing comfort? This guide highlights five EcoSmart and similar options best suited for homes aiming to cut electricity consumption while enjoying reliable on-demand hot water. Each pick targets different household needs—from compact spaces to higher flow requirements—so you can choose the one that fits your pattern of use and climate. The buyer-friendly table below summarizes key ideas at a glance.
| Product | Best For | Typical Use |
|---|---|---|
| EcoSmart ECO 11 | Small homes, apartments, point-of-use | Lower flow, near-demand heating |
| EcoSmart ECO 27 | Mid-sized homes, higher hot-water demand | Multiple fixtures, moderate climate |
| EcoSmart ECO 18 | Medium homes, consistent hot water | Steady supply, 2+ fixtures |
| EcoSmart ECO MINI 2.5 | Compact spaces, single fixture at a time | Small footprint, limited space |
| EcoSmart ECO 8 | Very small homes, simple hot-water needs | One point of use, quick setup |
Note: All selections emphasize on-demand heating, space savings, and energy efficiency. This guide uses objective criteria based on capacity, temperature control, and installation practicality to help buyers compare options quickly.
EcoSmart ECO 11 Electric Tankless Water Heater

Best for compact spaces and single-point use, this 13 kW unit with self-modulating technology delivers endless on-demand hot water with precise temperature control within 1 degree. It’s 90% smaller than traditional tank systems and is 99% thermally efficient, heating water only when called. Best for apartments or small homes where space and efficiency matter. Caution: Limited flow at very cold inlet temperatures may require a higher‑capacity model for multiple fixtures.
EcoSmart ECO 27 Electric Tankless Water Heater

Best for mid‑sized homes with higher hot-water needs, the ECO 27 runs at 27 kW and up to 112.5 amps. Its self-modulating tech helps tailor energy use to demand, allowing reliable heating of roughly 3 gpm depending on climate. Ideal for households with multiple fixtures in moderate climates. Consider climate: very low incoming water temps may require staging or a larger model for peak times.
EcoSmart ECO 18 Electric Tankless Water Heater

Best for medium homes seeking a balance of flow and efficiency, the ECO 18 supports more than 2.5 gpm and lets you set temperatures in 1-degree increments. It’s designed for climates where inlet water isn’t too cold, ensuring steady domestic hot water without the energy draw of a full tank. Choose this if you want flexibility with multiple uses without oversizing the system.
EcoSmart ECO MINI 2.5 Electric Mini Tank

Best for ultra-compact spaces or use at a single sink, the ECO MINI 2.5 provides a compact alternative to tankless models with a small reservoir. It is highly energy efficient at 99% and is manufactured in the United States. Ideal for apartment kitchens or laundry rooms where space is at a premium. Limitation: lower overall hot-water capacity makes it unsuitable for simultaneous use at multiple fixtures.
EcoSmart ECO 8 Tankless Water Heater

Best for very small homes or single-use scenarios, the ECO 8 provides essential on‑demand hot water with a compact footprint. While it offers simplicity and space savings, it’s best used where hot-water demand is limited. Choose this if you want an easy, low-cost way to eliminate standby heat loss from a traditional tank.
Buying Guide
Key factors to evaluate when selecting an eco hot water system:
- Hot-water demand: Match unit capacity to peak usage and climate. High‑flow homes may require ECO 27 or multiple units.
- Inlet water temperature: Colder climates reduce effective flow; choose models rated for your climate or plan for higher capacity.
- Space and installation: Tankless models save space; mini tanks fit tight spots but limit simultaneous usage.
- Electrical requirements: Verify available electrical service and any panel upgrades needed for 27 kW or higher models.
- Temperature control: Self-modulating and precise digital controls help optimize energy use and comfort.
- Energy efficiency: On‑demand heating reduces standby losses; consider the unit’s overall thermal efficiency and installation context.
FAQ
- What is the advantage of a tankless heater over a traditional tank? On-demand heating reduces energy use by avoiding standby heat loss.
- Can one ECOSmart unit supply all hot water in a family home? It depends on flow needs and climate; larger homes may require multiple units or higher-capacity models.
- Do these systems require professional installation? Most installations should be performed by a licensed professional to ensure correct electrical connections and venting where applicable.
- Are eco heat pump or solar alternatives included? This guide focuses on electric tankless systems and compact electric options; consider solar or heat pump alternatives for additional energy savings.
- What maintenance is needed? Periodic inspection of connections and temperature settings helps maintain efficiency and safety.
- Can these units be installed at point of use? Yes, many models are designed for wall mounting and point-of-use installation in limited spaces.