The Kumma is essentially the same as the Force 10 as I understand it. Either the company changed hands or was renamed.
The Kumma Heaters are fine, aluminum tank and a S/S housing. Ken H. On Friday, 2 March 2018, Chad Osmond via CnC-List <cnc-list@cnc-list.com> wrote: > We have the Kuuma, and the thermostat stopped working, it was out of warranty and we were the second owners but they still shipped me a free replacement part. > When you go to install it it is highly worth getting the bypass kit if it's anything like ours and shoved down in a locker where it's hard to reach, and impossible to remove the hoses. I found about 5 stainless steel screws and a long Robertson bit with a screw still taped to it down in ours. > >
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