I have both, and I have to say the 222K has fewer problems than the 222. No, the 222 and the 222K are NOT the same. However, their differences to the customer in actual use may be minimal to significant, depending upon each customer's needs. Here are the differences:
1. 222 has 1 built-in OTA tuner. 222K has NO built-in OTA tuner. However, you may purchase the the OTA module for this unit for about $29.00. The module will provide 2 OTA tuners using one cable-in. Also, a TV RF output channel 3/4 is also part of the module.
2. 222K allows for TV2 to access the OTA tuner. This can be a significant feature for some people. 222 OTA access is limited to TV1 only.
3. Others have posted that the 222K software is based on the upcoming 922,
4. 222K has a different chipset from the 222.
To some, the differences above are significant, as some folks want or need the 2 OTA capability and not the single OTA and need to access it from TV2. To others, it makes no difference as they may never use the OTA tuners.
Although the installer said the were they same, he may well have known about the differences, especially the potential number of OTA tuners, but he doesn't want to get bogged down by a sub who isn't getting the "same" box, who may in fact prefer the 222K option of 2 OTA tuners. Saying they were the same makes his job, for himself, easier, hoping you don't know that in fact you are getting a different box.