confirmed there is not currently a place to house a filter for this unit. It is a 2019 manufacture date and has probably never had a filter in it. Inspected indoor coil and verified it is restricted with dust and dirt. We need to make a plan to give the unit some filtration and clean the coil as best as we can. Will check charge after this is all said and done. Electrical is sound but charge may need adjusted after cleanliness of coil is improved and filter is added.