Heated floor manufacturer recommends a dedicated circuit...Can we get away with not doing this?

Our master bath is on the second floor on the opposite end of the house. The manufacturer (Schluter heated floor kit) recommends to have a dedicated circuit for the heated floor.

Per the electrician quotes..this is a huge P.I.T.A. With a 4.5 amp draw by the floor...why can't we use the existing 20 amp circuit that is shared by the bathroom outlets?

Thanks!

Here is the kit we're looking at, by the way:

http://ift.tt/1NVrRbf

Thanks!

Submitted April 28, 2016 at 09:21AM by smellypants http://ift.tt/1T62Mfh