
- Consumer Recommends

- Worth Considering
-
$4,345
Econergy HP4000 LT Good points
Best energy efficiency in test. Uses one-third (or less than one-third) of a standard electric hot-water cylinder's energy. Smallest model in test. Can be installed in a variety of locations. Suitable for connection to a ripple-controlled supply.
But
Water temperature not adjustable.
Average user rating: 0 reviews -
$4,998
Quantum 270-11AC3-134 Good points
Close in performance to the Stiebel but costs less. Uses half (or less than half) of a standard electric cylinder's energy - except at very low temperatures. Adjustable water temperature. Suitable for connection to a ripple-controlled supply.
But
Not quite as energy efficient as the Stiebel at low temperatures.
Average user rating: 0 reviews -
$6,825
Stiebel Eltron WWK 300 Good points
Best energy efficiency of the integral models. Uses half (or less than half) of a standard electric hot-water cylinder's energy - except at very low temperatures. Suitable for connection to a ripple-controlled supply.
But
Water temperature not adjustable.
Average user rating: 0 reviews
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