Our hot water dispenser stopped working. The plumber recommended Insinkerator as he had installed several. The insinkerator was about half the cost of the dispenser I had, altho it filtered both hot and cold watering now we just have filtered hot water I bought the unit at a local appliance store, the plumber installed it and it has been working fine since.
I did have to wait several weeks for the store to receive the hot water heater. I paid extra to expedite delivery but it only gave me a week. I did not install the device, the plumber did. He said it was easy. I paid a flat fee, so it didn't matter to me.