diff --git a/fre/app/remap_pp_components/tests/test_remap_pp_components.py b/fre/app/remap_pp_components/tests/test_remap_pp_components.py
index bd83a11ad..d673f8a98 100644
--- a/fre/app/remap_pp_components/tests/test_remap_pp_components.py
+++ b/fre/app/remap_pp_components/tests/test_remap_pp_components.py
@@ -4,6 +4,7 @@
 import logging
 from pathlib import Path
 import pytest
+import xarray as xr
 import fre.app.remap_pp_components.remap_pp_components as rmp
 
 # Test paths
@@ -332,7 +333,7 @@ def test_remap_offline_diagnostics(monkeypatch):
     assert Path(f"{os.getenv('outputDir')}/atmos_scalar/{STATIC_FREQ}/{STATIC_CHUNK}/empty.nc").exists()
 
 ## COMPARE INPUT AND OUTPUT FILES ##
-def test_nccmp_ncgen_remap():
+def test_compare_ncgen_remap():
     """
     This test compares the results of ncgen and rewrite_remap,
     making sure that the remapped files are identical.
@@ -340,13 +341,15 @@ def test_nccmp_ncgen_remap():
     comp_name = "atmos_scalar_CNAME"
     output_nc_file = f"{comp_name}.198001-198412.co2mass.nc"
 
-    nccmp = [ "nccmp", "-d",
-              Path(f"{REMAP_IN}/{NATIVE_GRID}/atmos_scalar/{FREQ}/{CHUNK}/{DATA_NC_FILES[0]}"),
-              Path(f"{REMAP_OUT}/{comp_name}/{PRODUCT}/monthly/5yr/{output_nc_file}") ]
-    sp = subprocess.run( nccmp, check = False)
-    assert sp.returncode == 0
+    with xr.open_dataset(
+            Path(f"{REMAP_IN}/{NATIVE_GRID}/atmos_scalar/{FREQ}/{CHUNK}/{DATA_NC_FILES[0]}"),
+            decode_cf=False, decode_times=False) as ds_in, \
+         xr.open_dataset(
+            Path(f"{REMAP_OUT}/{comp_name}/{PRODUCT}/monthly/5yr/{output_nc_file}"),
+            decode_cf=False, decode_times=False) as ds_out:
+        xr.testing.assert_equal(ds_in, ds_out)
 
-def test_nccmp_ncgen_remap_ens_mem():
+def test_compare_ncgen_remap_ens_mem():
     """
     This test compares the results of ncgen and rewrite_remap,
     making sure that the remapped files are identical.
@@ -358,14 +361,15 @@ def test_nccmp_ncgen_remap_ens_mem():
     remap_ens_in = f"{TEST_OUTDIR}/ncgen-ens-output"
     remap_ens_out = f"{TEST_OUTDIR}/remap-ens-output"
 
-    nccmp = [ "nccmp", "-d",
-              Path(f"{remap_ens_in}/{NATIVE_GRID}/ens_01/atmos_scalar/{FREQ}/{CHUNK}/{DATA_NC_FILES[0]}"),
-              Path(f"{remap_ens_out}/{comp_name}/{PRODUCT}/ens_01/monthly/5yr/{output_nc_file}") ]
+    with xr.open_dataset(
+            Path(f"{remap_ens_in}/{NATIVE_GRID}/ens_01/atmos_scalar/{FREQ}/{CHUNK}/{DATA_NC_FILES[0]}"),
+            decode_cf=False, decode_times=False) as ds_in, \
+         xr.open_dataset(
+            Path(f"{remap_ens_out}/{comp_name}/{PRODUCT}/ens_01/monthly/5yr/{output_nc_file}"),
+            decode_cf=False, decode_times=False) as ds_out:
+        xr.testing.assert_equal(ds_in, ds_out)
 
-    sp = subprocess.run( nccmp, check = False)
-    assert sp.returncode == 0
-
-def test_nccmp_ncgen_remap_statics():
+def test_compare_ncgen_remap_statics():
     """
     This test compares the results of ncgen and remap,
     making sure that the remapped static files are identical.
@@ -373,14 +377,15 @@ def test_nccmp_ncgen_remap_statics():
     comp_name = "atmos_scalar_CNAME"
     output_nc_file = f"{comp_name}.bk.nc"
 
-    nccmp = [ "nccmp", "-d",
-              Path(f"{REMAP_IN}/{NATIVE_GRID}/atmos_static_scalar/"
-                   f"{STATIC_FREQ}/{STATIC_CHUNK}/{STATIC_DATA_NC_FILES[0]}"),
-              Path(f"{REMAP_OUT}/static/{comp_name}/"
-                   f"{STATIC_FREQ}/{STATIC_CHUNK}/{output_nc_file}")]
-
-    sp = subprocess.run( nccmp, check = False)
-    assert sp.returncode == 0
+    with xr.open_dataset(
+            Path(f"{REMAP_IN}/{NATIVE_GRID}/atmos_static_scalar/"
+                 f"{STATIC_FREQ}/{STATIC_CHUNK}/{STATIC_DATA_NC_FILES[0]}"),
+            decode_cf=False, decode_times=False) as ds_in, \
+         xr.open_dataset(
+            Path(f"{REMAP_OUT}/static/{comp_name}/"
+                 f"{STATIC_FREQ}/{STATIC_CHUNK}/{output_nc_file}"),
+            decode_cf=False, decode_times=False) as ds_out:
+        xr.testing.assert_equal(ds_in, ds_out)
 
 ## VARIABLE FILTERING TESTS ##
 def test_remap_variable_filtering():