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Best Reviewed

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Recommended As
Pros and Cons
Sources
Amazon Rating

(average)

Where To Buy
 
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Features
Type
Fuel
Tank capacity (gallons)
Energy Star-rated
Low NOx
First hour rating (gallons)
Recovery rate (gallons)
Flow rate (gallons per hour)
EF rating
Thermal efficiency
Hourly BTU input
Vent type
Required vent size (inches)
Warranty
Height (inches)
Diameter (inches)
Weight (pounds)
 
  • image
    Pros: energy Star Qualified, environmentally friendly features, very long warranty, sufficient capacity for families up to five
    Cons: a little pricey
    not avail.
     
    Storage tank
    Natural gas
    50
    Yes
    Yes
    Not specified
    43 per hour at 90 degrees Fahrenheit
    Not specified
    0.67
    Not specified
    40,000
    Type B double wall
    3
    12 years (parts), 3 year (labor)
    63.25
    22
    167
     
  • image
    Pros: excellent energy efficiency; Energy Star Qualified, 50-gallon capacity, digital controls; optional Wi-Fi, good warranty
    Cons: more expensive than conventional electric water heaters
    not avail.
     
    Storage tank, heat pump, hybrid
    Electric
    50
    Yes
    Not applicable
    67
    Not specified
    Not specified
    2.9
    Not specified
    Not specified
    N/A
    N/A
    Limited 10-year (parts), limited 1-year (labor)
    60 3/4
    23 1/4 (deep), 21 3/4 (wide)
    179
     
  • image
    Pros: 99.8 percent efficiency, point-of-use; heats water on demand, small unit doesn't take up much space, lifetime parts warranty
    Cons: performance can vary depending on water temperatures, no labor warranty; company may not honor parts warranty on self-installs
    not avail.
     
    Tankless whole-house
    Electric
    N/A
    No
    N/A
    N/A
    N/A
    162 at 37 degrees Fahrenheit inlet water temperature, 396 at 77 degrees Fahrenheit inlet water temperature
    N/A
    99.8 percent
    N/A
    N/A
    N/A
    Lifetime on parts, no labor warranty
    18
    14 by 17
    13.75
     

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