Never heard if this product.
But what I can say is this.
Wen you go to determine what tankless you get one must look at flow rate , not number of baths. Down to each faucet, for example, faucet it 1.6 ( unless it has special aerators ) tub is 2.5 gpm and so on. Mainly I tell people take into account that u want enough hot water so that someone can shower and two faucets are on. Tht should be enough.