If you’re shopping for a water heater without a tank, you’re looking for on‑demand hot water that reduces wasted energy and space. The right tankless model meets your home’s water flow needs, fits your space, and works with your electrical or gas setup. This guide highlights five top options and explains who they’re best for, including a quick comparison table to help you decide at a glance.
Summary table of selected products:
| Product | Best For | Key Highlight | Limitations |
|---|---|---|---|
| VEVOR Electric Water Heater (18 Gal Tankless Style) | Families wanting ample hot water and easy control | High‑power 1600W, LED display, adjustable thermostat | Limited to electric power and 18‑gal design may impact flow at peak use |
| GE Appliances 18 Gallon Plug‑and‑Play | Small homes or apartments needing fast install | 120V operation, easy retrofit | Single hookup can limit simultaneous use |
| ThermoMate 14kW Tankless Electric | Homes with a strong electrical panel | High flow up to 3.4 GPM, self‑modulating | Requires dedicated circuit and proper wiring |
| APUS Propane Tankless (Indoor) | Whole‑home heating with high GPM | Up to 6.8 GPM, Wi‑Fi app, instant hot water | Propane model; venting and installation considerations |
| EcoSmart ECO 8 | Budget‑mensitive or compact spaces | Compact, energy‑efficient electric tankless option | Lower flow compared to larger units |
VEVOR Electric Water Heater, 18 Gallon Tankless Style
This unit blends a sizable 18‑gallon design with on‑demand performance. It uses a 1600W heating element and an LED display for easy temperature control, adjustable from 30°C to 75°C (86°F to 167°F). It is well suited for families that need enough hot water for showers, dishwashing, and laundry without long waits. Best for households that can accommodate a steady electric supply and want a straightforward knob control. A potential limitation is that the 18‑gallon capacity may constrain simultaneous high‑demand usage compared with larger, gas‑powered options.
GE Appliances 18 Gallon Plug‑and‑Play Electric Model
Designed for easy installation in small spaces, this unit is ideal for apartments or compact homes. It connects to a standard 120‑V supply and uses common 3/4‑inch NPT connections, making retrofit quick. Best for renters or owners who prioritize simple upgrade paths and minimal electrical work. Consider that its capacity is suited to a single hot water circuit or light‑duty whole‑home needs, so avoid relying on it for multiple simultaneous fixtures.
ThermoMate 14kW Tankless Electric
This model targets homes with a robust electrical panel and a desire for higher flow. It delivers up to 3.4 GPM, suitable for running a shower and a sink simultaneously, depending on inlet water temperature. The unit features a heavy‑duty cast aluminum heating block and a corrosion‑resistant element design, improving longevity. Choose this if you have space for a dedicated 60‑amp double‑pole circuit and want reliable, on‑demand water. A limitation is it requires careful electrical planning and professional installation in many homes.
APUS Propane Tankless Water Heater (Indoor)
APUS combines a high‑flow propane burner with smart features to deliver instant hot water, up to 6.8 GPM. It uses a built‑in booster pump to support two showers and sinks simultaneously with minimal temperature fluctuation. Best for whole‑home use in residences that can safely vent a propane system and want reliable performance with a companion Wi‑Fi app for monitoring. Note that installation considerations include venting, gas supply, and proper clearances for indoor propane units.
EcoSmart ECO 8 Tankless Electric
The EcoSmart ECO 8 is a compact, electric tankless option designed for space‑conscious buyers. It’s often praised for its energy efficiency and simple installation in smaller homes or apartments. Best for those prioritizing cost savings and a smaller footprint. A potential drawback is that its GPM capacity is lower than larger models, which may limit simultaneous high‑demand use. It’s a dependable choice for steady, moderate hot water needs across a compact layout.
Buying Guide: How To Choose The Right Tankless Water Heater
- Fuel source and installation: Electric units are common for apartments and interiors with easy electrical access. Gas or propane units handle higher flow but require proper venting and ventilation. Consider existing plumbing and the space available for installation.
- Flow rate you need: Estimate GPM requirements for your shower, sink, dishwasher, and laundry usage. Higher GPM units satisfy more simultaneous fixtures, but often require more power or a larger gas supply.
- Electrical or gas capacity: Electric models demand sufficient panel capacity and dedicated circuits. Gas models demand venting, gas line sizing, and gas appliance clearances. Ensure your home can support the chosen model.
- Space and comfort: Compact footprints fit tight spaces, but some units still require room for venting or plumbing access. Consider wall clearance and mounting constraints.
- Maintenance and durability: Look for corrosion‑resistant elements, reliable heating blocks, and materials that resist mineral buildup in hard water areas. Regular maintenance extends lifespan.
- Ease of control: LED displays, thermostatic control, and app connectivity help with precise temperature management and monitoring of performance.
- Safety features: Overheat protection, anti‑scald mechanism, and electrical isolation are important for safe family use.
Frequently Asked Questions
- What should I consider before choosing a tankless water heater? Consider your peak hot water needs, electrical or gas capacity, space for installation, and future usage plans for your home.
- Do tankless heaters save energy? Yes, they reduce standby losses typical with tank storage and heat water on demand, though savings depend on usage patterns.
- Can these units supply hot water to multiple fixtures? Some models handle 2–3 fixtures simultaneously; check the GPM rating and inlet water temperature to confirm suitability.
- Is professional installation required? Electric models often require professional wiring; gas models require venting and gas line work. Always follow local codes.
- Are there maintenance tasks I can perform myself? Yes, routine flushing to prevent mineral buildup and checking connections can help maintain efficiency, but follow manufacturer guidelines.
- Which model is best for a small apartment? A compact electric or plug‑and‑play unit is usually ideal for limited spaces and simple installation.