Top 5 Tankless Water Heaters in the Market Today

By: Smart Zero Home
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Once you know the tankless water heater specifications (get specifications customized for your home) befitting your needs and your home size (see tankless water considerations to understand all the tankless water heater features that your should be focusing on), its time to zero in on the tankless water heater that you want to buy.

Tankless water heaters, save considerable space and water, and are a lot more energy efficient compared to storage water heaters

Rinnai and Rheem natural gas tankless water heater, offer one of the highest efficiencies available (energy factor of 0.94). For very cold climates, electric tankless water heaters from Ecosmart can heat input temperatures as low as 37 degrees.

The following is our pick of the best tankless water heaters available in the market today, based on our analysis, market study, and feedback from consumers and retailers:

Company Rheem Rinnai EcoSmart Takagi Ecotemp
Rating* 9.2 8.8 8.6 9.4 9
Price** $1,180 $1,490 $445 $1,200 $499
Capacity (GPM) 9.5 GPM 9.8 GPM 6 GPM 10 GPM 6.8 GPM
Efficiency (Energy Factor) 94% 94% 95% 95% 80%
Fuel Source Natural gas Natural Gas Electric Liquid Propane Natural Gas
Model Name RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater RU98IN 9.8 GPM Indoor Ultra-NOx Condensing Tankless Natural Gas Water Heater ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts with Patented Self Modulating Technology TH3 Series 199000 BTU Direct Vent Indoor Whole House Tankless Water, Liquid Propane 6.8 GPM Indoor Natural Gas Tankless Water Heater
Model Details Intelligent electronic controls designed to increase energy efficiency and safety
Ultra-Energy Efficient, Max BTUs 199,000

Save up to12 cubic feet of storage space,  Digital temperature control in 1-degree increments gives users complete control of hot water

Ideal for point of use (kitchen/master bath)

Condensing tankless water heater draws and expels its air from outside.

Controlled by a self-diagnostic computer system and controller

Digital Remote with simple controls and diagnostics, 140,000 BTUs

Ideal for point of use (kitchen/master bath)

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* Smart Zero Home overall rating based on customer and retailer feedback and our 5 parameter market analyses
** Price is the best price available online, and may include discounted/bargain prices that may not be available everywhere


Also see our post on Tankless Water Heater 101.