Compact Tankless Water Heaters · Best Compact Tankless Water Heaters for Electric and Medium
10 Best Compact Tankless Water Heaters for Electric and Medium (2026)
We evaluated every model against our criteria. 10 earned a spot. Here's what each is best for — and when a different option wins.
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Top 3 at a glance
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#1 PickBest Compact Tankless Water Heaters for Electric and Medium
100%DecisionScore
CAMPLUX TanklessTop 3 at a glance
1
Best OverallCAMPLUX ENJOY OUTDOOR LIFE
CAMPLUX Electric 6kW
Best for: electric with indoor
100% match
Check today’s price →Why this pick
The energy source of a tankless water heater affects installation requirements, operating costs, and efficiency. The CAMPLUX ENJOY OUTDOOR LIFE Tankless Water leads because it delivers electric with indoor — exactly what this ranking prioritizes. A touch control panel provides temperature adjustments and status display.
2
Runner-UpEccotemp
Eccotemp Smart Home Indoor 4.0 GPM Natural Gas Tankless Water Heater
Best for: electric with indoor
100% match
Check today’s price →Why this pick
The Eccotemp Smart Home offers electric with indoor. Eccotemp’s FVI12‑NG is a compact natural gas tankless heater providing 3.6 gallons per minute.
3
Also GreatFOGATTI
FOGATTI 66,000 BTU (Highest Output), 0.5-3
Best for: electric with indoor
100% match
Check today’s price →Why this pick
The FOGATTI InstaShower Ultra offers electric with indoor. Its moderate price and straightforward installation make it a compelling upgrade for mobile living..
55,000 BTU output
4
#4 PickNOVIEEX
Tankless to 4.3 GPM, 100000
Best for: electric with indoor
100% match
Check today’s price →Why this pick
The NOVIEEX Water Heater, delivers electric and indoor. It ignites with two D‑cell batteries and requires no electrical connection.
Why this pick
The EcoSmart ECO 27 differentiates with medium (select the capacity that matches your household's hot water demand). EcoSmart’s ECO 27 is one of the most powerful electric tankless heaters in the company’s lineup, generating up to 6.5 gallons per minute.
6.5 GPM electric unit
Why this pick
The Eemax EEM24027 Electric differentiates with medium (select the capacity that matches your household's hot water demand). Eemax’s 27 kW electric tankless model provides up to 6 gallons of hot water per minute, supporting one to two showers simultaneously.
Why this pick
The Noritz NRC66DVNG Indoor differentiates with natural gas (choose the energy source that best suits your installation and energy efficiency needs). Noritz’s NRC661DV is a compact condensing unit that delivers 6.5 gallons per minute, suitable for smaller households.
8
#8 PickNiagara Industries Inc
Titan 160 SCR3
Best for: electric with indoor
75% match
Check today’s price →Why this pick
The Niagara Industries Inc N-160 SCR3 differentiates with medium (select the capacity that matches your household's hot water demand). A digital display with push buttons allows easy temperature adjustments.
Why this pick
The Bosch Tronic 3000C differentiates with non-condensing (condensing models are more efficient but may have higher upfront costs). Its 3‑inch depth and minimalist design allow it to be hidden under cabinets.
Why this pick
The EcoSmart ECO 11 differentiates with non-condensing (condensing models are more efficient but may have higher upfront costs).
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