Most efficient heater?

[shiftline]

Are there any brands of heaters that are more efficient in terms of actual power consumption to heat the same volume of water? Ever manufacture seems to recommend a slight different range of tank sized for their specified wattage but I'm not sure how reliable that is to gauge efficiency

[shifty51008]

They are all the same, a 300 watt heater is gonna still put 300 watts into the water

[shiftline]

An ehiem has more surface are (since they are so long) and has a glad jacket compared to a smaller finnex titanium heater. So I'm not 100% sure which would be more efficient in the end

[shifty51008]

They are still gonna put out the same wattage so unless you have stagnant water it will heat the same

[shiftline]

Sounds good. Thanks :)

[ca1ore]

Every manufacture seems to recommend a slight different range of tank sized for their specified wattage but I'm not sure how reliable that is to gauge efficiency

Watts is watts. Differing specs is simply a function of varied assumptions. The appropriateness of a heater for a tank is not just a function of the water volume, it's also a function of ambient temperature in the room. Making a different assumption about ambient will lead to a different rating.

[Crypsis]

A solar hot water heater is pretty efficient.

[dkeller_nc]

As noted, almost all of the electricity that's going to a heater is consumed in the heating of the water as they have a very high impedance. They're nearly 100% efficient in that regard.

But if you want to lower your electricity usage, careful insulation of your tank, sump and/or stand, and lowering your tank's evaporation to a minimum will greatly reduce the total power you use in heating the tank.