diff --git a/src/sorunlib/acu.py b/src/sorunlib/acu.py
index 4681536..05b9755 100644
--- a/src/sorunlib/acu.py
+++ b/src/sorunlib/acu.py
@@ -96,3 +96,21 @@ def set_shutter(action):
     acu = run.CLIENTS['acu']
     resp = acu.set_shutter(action=action)
     check_response(acu, resp)
+
+
+def set_hvac(targets, values):
+    """Turn the hvac system for the LAT on or off.
+
+    Args:
+        targets (list of str): List of devices to set. Valid targets include
+            'fans', 'boosters', 'heaters' or specific devices out of these
+            categories, such as 'Booster Yoke Traverse M Servo Space'.
+        values (int, float, str, or list): Values to set for each target.
+            If a value matches 'on' or 'off', it will turn the device on or off.
+            Otherwise, it will be interpreted as a 'setpoint' (i.e fan speed %).
+            If values is a scalar, broadcast to all targets.
+
+    """
+    acu = run.CLIENTS['acu']
+    resp = acu.set_hvac(targets=targets, values=values)
+    check_response(acu, resp)
diff --git a/tests/test_acu.py b/tests/test_acu.py
index 4cbc757..ae06477 100644
--- a/tests/test_acu.py
+++ b/tests/test_acu.py
@@ -79,3 +79,17 @@ def test_set_scan_params(patch_clients_satp):
 def test_set_shutter(patch_clients_satp, action):
     acu.set_shutter(action=action)
     acu.run.CLIENTS['acu'].set_shutter.assert_called_with(action=action)
+
+
+@pytest.mark.parametrize(
+    "targets, values",
+    [
+        (["boosters", "fans"], ["on", "on"]),
+        (["boosters", "fans"], "off"),
+        (["fans"], 50),
+    ],
+)
+def test_set_hvac(patch_clients_lat, targets, values):
+    acu.set_hvac(targets=targets, values=values)
+    acu.run.CLIENTS['acu'].set_hvac.assert_called_with(
+        targets=targets, values=values)