If we are already in a chapter 13 can we get a refinance on our home? It is not in the chapter 13

Only under very limited circumstances, you have to make at least 12 payments and have permission from the court - and of course also qualify under mortgage requirements

PS. FHA mortgages only, the payments have to be ontime of course and all other aspects of your qualifications (credit score and profile, DTI, etc) must be acceptable.

Only if you qualify and get approval from the Bankruptcy Court.