this product dispenses hot water the same as costlier units without the bells and whistles. be aware that it does transfer a plastic odor to the water for a good number of uses before the plastic smell eventually dissipates. also, if installing on a metal sink that isn't high-end you may have to bolster the underside of the area into which the dispenser is being mounted. this will help prevent the problem of a not-tight-enough installation. i did this on my medium grade metal sink by installing a piece of hard plastic "rubber" on the underside of the sink. i did not have to do this, though, when i installed the identical dispenser on a sturdy cast iron sink.
i have been using several of these units for a number of years now, without a problem. insinkerator generally makes a good product.
enjoy your new dispenser!