Yes, the Copeland 9TH (9T series) is a two‑stage, semi‑hermetic compressor platform intended for low‑temperature applications.

For R‑404A: compatibility is model specific.

Copeland literature for the 9T two‑stage series shows that some 9T/9TH variants are approved for R‑404A / R‑507, while other variants are listed for R‑22 / R‑502 only.

Because your exact model is 9TH1‑101A‑TFD‑800, we recommend confirming the approved refrigerants and oil type on the compressor nameplate and/or via Copeland Online Product Information (OPI) using the full model number before using R‑404A.

Important: Final refrigerant selection and installation should be determined by a licensed refrigeration technician familiar with your specific application and all applicable local and state/provincial laws/regulations.