"Why is the max flow lower for the staged turn on?"
The heating modules are set up differently to accommodate different flow rates.

"What's the difference between the parallel turn on and the staged turn on?"
The parallel turn on will give you a higher maximum flow rate, and it needs a higher flow rate to turn on than the staged turn on. The staged turn on will turn on with a lower flow rate, and it handles a lower maximum flow rate than the parallel turn on.

"How does the staged turn on work?"
Staged turn on models only use the heating modules needed to produce the desired output temperature.

"Are all Eemax tankless water heaters designed to be hardwired?"
Yes, every tankless water heater by Eemax is supposed to be hardwired when it's installed.

"Does the kW listed under each model represent the amount of energy they use if all the heating elements are on?"
Yes, the specification for kilowatt usage for all models show the maximum wattage with all heating elements on.

"Eemax instant heaters specify the 'temperature rise' based on the GPM flow; what do you mean by this?"
Temperature rise is the amount the heater raises the temperature of the incoming water, based on the flow rate shown of that water.

"Can I install these tankless water heaters in my attic?"
Without seeing all of your plumbing piping, etc. it is difficult for us to answer with a straight "yes" or "no." One must be sure that a possible water siphoning condition can not be created as these fantastic electric tankless water heaters can not have air in the lines. Water siphoning out of any brand of electric tankless water heater might damage the heater or element when the element is on and there is no water (or not enough water) in the lines. Air should not be touching the elements.

"How does the Hot Water Heater Scale Inhibitor System prevent corrosion?"
It forms a thin protective layer on the inside of pipes and metal parts. This film or layer is microscopic in thickness and will not build up over time.

"Will the Hot Water Heater Scale Inhibitor System change the taste or odor of water?"
No. The active ingredient is colorless, tasteless, and odorless when used as recommended.

"Is the Hot Water Heater Scale Inhibitor System's active ingredient safe?"
Yes! All ingredients used are 100% pure food grade materials. They are approved by the USDA and meet purity requirements as a food additive by the World Health Organization.

"What are the best reasons to install a Scale Inhibitor System?"
The system inhibits scale build-up and protects the piping from corrosion, which helps maintain efficiency and extends the life of the system.

"What happens if you don't change cartridges often enough on the Scale Inhibitor System?"
The original water condition and problem will reappear. Hardness will begin to build up again, which you want to avoid.

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