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A: Here are a few options. 1) Make sure you are using a low flow shower head. 2) Make sure the unit is adjusted to its highest setting. 3) If you have had the unit for a few years, you "may" get better performance by changing out the heating element to a new one. While you are at it, change the anode rod. The improvement will largely depend on how mineralized your water is. The more mineralized, the better your performance by changing out these components. 4) Upgrade to our model ES8 which has over 7 gal. of hot water. 5) Adjust the Cold/Hot mix at the faucet for greater use of Cold (ie. colder shower - sorry, that one is probably the least favorite.)
A: There are three ways to drain this unit. Please see the manual that is downloadable from this product page to determine the best method of draining for your specific application.
A: Based on a 1 GPM kitchen faucet, the water will remain hot for approximately 2 minutes before noticing a temperature drop.