[james a jarrett]

Is 3500watt element going to heat a little let than a 4500 watt element because my element in my water heater is 3800 watts .I want to use a 4500w element .

[ma0641]

First lets determine the voltage to the heater. 240VAC? 30 AMP breaker? Yes, 3500 will heat slower than a 4500. Where does the 3500 come in when you have a 3800? One element or two? Depending on the supply voltage to the heater and the wire size, you may be able to swap out.

[speedball1]

Yes the 3500 watt element will heat slower but will heat to then setting. You may increase to 4500 if you wish but in my book it would be a waste of time and money. Good luck, Tom