undercutter
The most exciting feature of the TOL ISE's is the undercutter. This will help to eliminate many stopages, especially for those who install their disposal with a disposal installation kit, from the big box home improvement stores.
These kits allow a disposal to be turned sideways with the discharge pipe heading directly into the the downpipe of the adjacent sink basin.
Inside the "T" connector is a baffle that directs disposal waste down in an instant 90 degree turn using only half the diameter of the pipe. Not good. Fibrous material can get lodged here and create a totally impermeable plug.
Whirlpool could never make a decent disposer. Their "Bone Crusher" of the seventies received a VERY low rating in Consumer Reports magazine.
The worst disposal I ever had was in an apartment, built in 1980, that had a unique long and skinny Whirlpool "drop in" disposal. Designed for lazy builders it actually dropped down into the sink from the top drain opening and was lowered until the flange met the sink.
It was metal to metal, with no rubber/polymer to cushion and reduce vibrations. It had a cheap high speed motor that transmitted virtually every vibration to the stainless sink, which of course acted as a very nice sounding board. As you can imagine, it was a nightmare to use and a poor ginder. Was only there a matter of days before pulling it and replacing with a builder's grade ISE,which was light-years superior.
Since Whirlpool is known for lousy disposals, it is nice to see they purchased a company that has the engineering expertise and the infrastructure to build quality units, since they couldn't.
Whirlpool built their own Bone-Crusher unit. The silly drop through-the-sink model may have been produced by them or they may have contracted it out, I never researched it. It didn't matter their name was on it and they were responsible for it. It was one of the most laughable pieces of engineering and poor design I have ever seen. It didn't seem to be on the market anytime at all.
Whirlpool wisely decided to get out of the disposer business altogether, since they didn't have a clue how to engineer them. They contracted ISE to stick their name on some select units. Of course Whirlpool's Kitchen-Aid units became nothing more than KA branded ISE after the Hobart design sold to the Viking Range company.
Funny, Viking eventually quit making the Hobart design and then contracted ISE to make it for them as somewhat of a ISE/Hobart hybrid.
Everything always seemed to go back to Emerson's ISE division.
ISE was left standing alone as the only U.S. manufacturer of food-waste disposers after Viking got out of manufacturing. Annaheim Manufacturing sold out to using China manufacturing, which was sad as the ultra-high quality Waste King became just another of the many name badges stuck on their China built permanent magnet motor units.
I am glad Whirlpool snatched up ISE. Now Whirlpool can finally able to produce a decent disposal, and they have saved a quality and historic name in the disposal industry, ISE.