Hi, this is Jerica from InSinkErator Customer Service. At the present time, there are no national standards regarding such compatibility. In the absence of a nationally recognized standard, InSinkErator can make no claim regarding our products’ compatibility with other filtration systems and we can neither discourage nor recommend the use of such systems in conjunction with our Instant Hot Water Dispensers including the cold side of our faucet assemblies.
However, we can share some facts with you.
RO Systems produce highly purified water which makes the water very “aggressive”. That is why RO faucets are completely plastic. Our dispenser faucets are brass constructed. Additionally, RO System can produce very low water flow rates, which hinder the performance of the instant hot water dispenser system. At water line pressures significantly lower than 30 PSI, the dispenser may “drip”. Either of these two situations could lead to dissatisfaction, which is why we’ve introduced our own filtration system designed specifically for use with our Instant Hot Water Dispensers.
You may check this link regarding our filtration systems:
http://shop.insinkerator.com/c/wate....
If you have questions, please do not hesitate to contact us through insinkeratorfeedback@emerson.com or call InSinkErator AnswerLine at 1 (800) 558-5700. Thank you.