PUMS API and downloading Housing records

I am trying to use the ACS API (application programming interface) to download selected PUMS variables.  There are 2 types of records (RT variable, "H"=Housing record "P" person record.)  When I use the API examples: https://api.census.gov/data/2020/acs/acs5/pums/examples.html I only get "P" person records.

The census FTP site https://www2.census.gov/programs-surveys/acs/data/pums/2020/5-Year/  has separate files for housing records and person records.  I'm looking for a particular PUMA. If you download from the FTP site you get all the PUMS variables for all the PUMAs in a state.  If you try to process these file you have to wait for the download and processing the resulting files is a real "memory hog" and takes forever.  With the API you can download selected variables for a single PUMA.  Any experts on the PUMS API out there ?

Dave Dorer