I'm opening a cooking school for kids in Louisiana. The state health
department is not requiring me to have a commercial dishwasher. I can
have a residential dishwasher that has a final rinse of 180 degrees OR
a final rinse that introduces a sanitizing chemical such as chlorine.

I've been unable to find a residential dishwasher that does either.
Most of them have a high-heat sanitizing rinse that meats NSF
standards, but the highest temp I can find is only 170 degrees. I've
been told a booster heater can be added to a residential dishwasher,
but I've also been told that it's not good for the dishwasher.

The reasons I want a residential dishwasher:

1) Cost - residential is under $1000 while commercial is $2000 minimum.
2) Appearance - Our cooking school is made to look like a residential
kitchen. Commercial dishwashers don't fit that image.

I appreciate any suggestions or info!