The instructions for the push in connectors I have seen disallow their use with aluminum wire. This makes sense because push in (stab in connections) have always been against code. I have done rework in a house where the make up was done using these type of connectors. It seems to make for a neat installation. I did not see any failures. This house is about 15 years old.I would like to know if anyone has seen problems with feed through loads using them.

The instructions for the push in connectors I have seen disallow their use with aluminum wire. This makes sense because push in (stab in connections) have always been against code for aluminum wire. 

I have done rework in a house where the make up was done using these type of connectors. It seems to make for a neat installation. I did not see any failures. This house is about 15 years old. I would like to know if anyone has seen problems with feed through loads using them.