Best New Technology Water Heater Options for on-Demand Hot Water
Consumers seeking modern, energy-efficient on-demand hot water systems can choose from compact electric and gas tankless models that save space and reduce energy use. This guide highlights five leading options featuring self-modulating technology, intelligent controls, and versatile installation. Each product section explains key specs, performance highlights, and what makes it suitable for different homes or settings.
| Product | Type | Energy Feature | Ideal For |
|---|---|---|---|
| EcoSmart ECO 11 | Electric Tankless | Self-Modulating, 99% thermal efficiency | Compact spaces, point-of-use |
| Rinnai RX199iN | Gas Tankless Condensing | Smart Sense control, high efficiency | Indoor/outdoor, higher flow |
| Rheem RTEX-13 | Electric Tankless | Self-modulating power control | Residential installations, simple wiring |
| EcoSmart ECO 27 | Electric Tankless | Wide heating range, 1-degree control | Cold climates, higher demand |
| APUS Tankless 240V | Electric Point-Of-Use | Self-modulating, compact under-sink | Under-sink hot water for kitchens/baths |
Choosing a new technology water heater depends on your space, fuel type, flow needs, and energy goals. The products listed below represent options that balance efficiency, performance, and ease of installation for American homes seeking reliable on-demand hot water.
EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 provides on-demand hot water with a compact footprint, designed for spaces where wall mounting is advantageous. It uses patented self-modulating technology to adjust energy use based on water flow, which helps minimize energy consumption. With a typical 54-amp draw at a 240-volt supply, this unit is optimized for households that need steady output without maintaining a tank. Its 11-kilowatt rating makes it suitable for point-of-use or smaller installations, with the benefit of a dramatic reduction in space compared to traditional tank heaters. The unit emphasizes 1-degree temperature control accuracy, contributing to predictable performance in daily routines.
Key considerations:
– Pros: Space-efficient, high efficiency, precise temperature control, straightforward installation for smaller homes or apartments.
– Cons: May require electrical upgrades for certain homes, best suited for lower simultaneous hot water use.
NEW Rinnai RX199iN Condensing Tankless Water Heater
The RX199iN is a high-capacity gas-powered tankless model designed for indoor or outdoor installation thanks to Versa Vent. It supports up to 11.1 GPM and pairs efficient gas operation with smart features like Quick Flush and an intuitive interface. Its compact form belies the performance: a compact unit delivering hot water to multiple fixtures simultaneously, with an energy efficiency factor of UEF .98. Even without a dedicated WiFi module, the built-in controls and modern design support easy operation and maintenance for households with elevated hot water needs.
Key considerations:
– Pros: Excellent flow for multiple fixtures, flexible installation, high efficiency for gas models.
– Cons: Gas line and venting considerations; may require professional installation for venting and gas connections.
Rheem 240V Heating Chamber RTEX-13
The Rheem RTEX-13 is a 240V electric tankless model designed for straightforward installation and dependable on-demand hot water. Features include an external adjustable digital thermostat with LED display, durable copper immersion heating elements, and self-modulating power control. The unit is designed for simple hookup with 1/2 NPT adapters and side 1/2 inch compression water connections. Typical applications include single-family homes where space is at a premium and existing electrical service can support a tankless installation.
Key considerations:
– Pros: Simple to install, precise temperature control, robust build with serviceable elements.
– Cons: Higher upfront electrical demand; best for moderate hot water needs or retrofit projects with adequate electrical capacity.
APUS Tankless Water Heater Electric 240V
APUS offers a compact electric tankless heater designed for instant hot water at a single point of use. With a 4.5 kW rating, it heats water on demand with a self-modulating approach to energy use, potentially reducing standby losses. The LED digital display allows precise temperature settings, and the unit’s slim profile facilitates under-sink or cabinet installation. The model emphasizes fast warm-up times and a straightforward control interface that suits kitchens, bathrooms, or small workplaces seeking reliable point-of-use hot water.
Key considerations:
– Pros: Quick hot water at point of use, energy-efficient operation, compact design.
– Cons: Lower flow compared to larger models; best for single fixture usage rather than whole-house needs.
EcoSmart ECO 27 Tankless Water Heater
The EcoSmart ECO 27 is designed for higher hot water demand and colder incoming water. It offers 27 kW of heating capacity with digital temperature control to set temperatures in 1-degree increments. The unit’s high-energy efficiency and self-modulating operation help users in colder climates achieve reliable hot water without wasting energy. It is a strong choice for families or households with simultaneous hot water usage, such as multiple showers or laundry cycles, who still want a tankless solution that saves space.
Key considerations:
– Pros: Higher flow capacity, precise temperature control, energy efficiency, suitable for colder climates.
– Cons: Higher electrical requirements; installation may require dedicated circuits and professional assistance.
ECOTINYMACH 3000W 110V Tankless Water Heater
The ECOTINYMACH 110V tankless unit is built for smaller installations and single-sink use. Its 3000W power rating and dual temperature display (F/C) provide straightforward control for under-sink hot water needs. The compact design makes it suitable for tight spaces where traditional heaters won’t fit. The system emphasizes energy-conscious operation, allowing users to enjoy on-demand hot water without maintaining a tank.
Key considerations:
– Pros: Compact, easy to install under sinks or in compact spaces, dual temperature readouts.
– Cons: Limited flow compared to higher-kW models; best for low-demand use cases.
Buying Guide: Key Considerations for Choosing a Tankless Water Heater
- Fuel type and installation location: Electric models are common for apartments or spaces without gas lines; gas models provide higher flow but require venting and professional installation.
- Flow rate needs: Determine your peak hot water demand (number of fixtures and simultaneous use) to select a unit with adequate GPM at the lowest incoming water temperature.
- Energy efficiency: Look for self-modulating technology and high UEF or COP values to minimize energy costs over time.
- Electrical and venting requirements: Ensure your electrical panel supports the unit’s amperage draw; gas models may require venting and gas line upgrades.
- Space and installation constraints: Consider wall-mount options, under-sink placement, or outdoor installation when applicable.
- Maintenance and serviceability: Devices with accessible heating elements and built-in diagnostic features can reduce downtime and simplify servicing.
- Controls and connectivity: Some units offer advanced digital displays, WiFi controls, or quick flush features for easier system management.
- Longevity and warranties: Review warranty terms for the heat exchanger and other critical components, as these reflect long-term reliability.
- Cost of ownership: Account for installation costs, electrical or gas upgrades, and ongoing energy savings when comparing models.
These considerations help balance performance with practical constraints, ensuring the selected tankless water heater aligns with household needs and local building codes. The five highlighted products provide a spectrum of electric and gas options, suitable for different home sizes, climates, and usage patterns while prioritizing energy efficiency and on-demand reliability.