diff --git a/homeassistant/components/history/__init__.py b/homeassistant/components/history/__init__.py
index 77301532d3d..27acff54f99 100644
--- a/homeassistant/components/history/__init__.py
+++ b/homeassistant/components/history/__init__.py
@@ -24,10 +24,10 @@ from homeassistant.components.recorder.statistics import (
 )
 from homeassistant.components.recorder.util import session_scope
 from homeassistant.components.websocket_api import messages
+from homeassistant.components.websocket_api.const import JSON_DUMP
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entityfilter import INCLUDE_EXCLUDE_BASE_FILTER_SCHEMA
-from homeassistant.helpers.json import JSON_DUMP
 from homeassistant.helpers.typing import ConfigType
 import homeassistant.util.dt as dt_util
 
diff --git a/homeassistant/components/logbook/websocket_api.py b/homeassistant/components/logbook/websocket_api.py
index 461ed018090..82b1db1081c 100644
--- a/homeassistant/components/logbook/websocket_api.py
+++ b/homeassistant/components/logbook/websocket_api.py
@@ -14,9 +14,9 @@ from homeassistant.components import websocket_api
 from homeassistant.components.recorder import get_instance
 from homeassistant.components.websocket_api import messages
 from homeassistant.components.websocket_api.connection import ActiveConnection
+from homeassistant.components.websocket_api.const import JSON_DUMP
 from homeassistant.core import CALLBACK_TYPE, Event, HomeAssistant, callback
 from homeassistant.helpers.event import async_track_point_in_utc_time
-from homeassistant.helpers.json import JSON_DUMP
 import homeassistant.util.dt as dt_util
 
 from .helpers import (
diff --git a/homeassistant/components/recorder/const.py b/homeassistant/components/recorder/const.py
index e94092d2154..e558d19b530 100644
--- a/homeassistant/components/recorder/const.py
+++ b/homeassistant/components/recorder/const.py
@@ -1,11 +1,12 @@
 """Recorder constants."""
 
+from functools import partial
+import json
+from typing import Final
 
 from homeassistant.backports.enum import StrEnum
 from homeassistant.const import ATTR_ATTRIBUTION, ATTR_RESTORED, ATTR_SUPPORTED_FEATURES
-from homeassistant.helpers.json import (  # noqa: F401 pylint: disable=unused-import
-    JSON_DUMP,
-)
+from homeassistant.helpers.json import JSONEncoder
 
 DATA_INSTANCE = "recorder_instance"
 SQLITE_URL_PREFIX = "sqlite://"
@@ -26,6 +27,7 @@ MAX_ROWS_TO_PURGE = 998
 
 DB_WORKER_PREFIX = "DbWorker"
 
+JSON_DUMP: Final = partial(json.dumps, cls=JSONEncoder, separators=(",", ":"))
 
 ALL_DOMAIN_EXCLUDE_ATTRS = {ATTR_ATTRIBUTION, ATTR_RESTORED, ATTR_SUPPORTED_FEATURES}
 
diff --git a/homeassistant/components/recorder/core.py b/homeassistant/components/recorder/core.py
index 8b15e15042f..7df4cf57e56 100644
--- a/homeassistant/components/recorder/core.py
+++ b/homeassistant/components/recorder/core.py
@@ -744,12 +744,11 @@ class Recorder(threading.Thread):
             return
 
         try:
-            shared_data_bytes = EventData.shared_data_bytes_from_event(event)
+            shared_data = EventData.shared_data_from_event(event)
         except (TypeError, ValueError) as ex:
             _LOGGER.warning("Event is not JSON serializable: %s: %s", event, ex)
             return
 
-        shared_data = shared_data_bytes.decode("utf-8")
         # Matching attributes found in the pending commit
         if pending_event_data := self._pending_event_data.get(shared_data):
             dbevent.event_data_rel = pending_event_data
@@ -757,7 +756,7 @@ class Recorder(threading.Thread):
         elif data_id := self._event_data_ids.get(shared_data):
             dbevent.data_id = data_id
         else:
-            data_hash = EventData.hash_shared_data_bytes(shared_data_bytes)
+            data_hash = EventData.hash_shared_data(shared_data)
             # Matching attributes found in the database
             if data_id := self._find_shared_data_in_db(data_hash, shared_data):
                 self._event_data_ids[shared_data] = dbevent.data_id = data_id
@@ -776,7 +775,7 @@ class Recorder(threading.Thread):
         assert self.event_session is not None
         try:
             dbstate = States.from_event(event)
-            shared_attrs_bytes = StateAttributes.shared_attrs_bytes_from_event(
+            shared_attrs = StateAttributes.shared_attrs_from_event(
                 event, self._exclude_attributes_by_domain
             )
         except (TypeError, ValueError) as ex:
@@ -787,7 +786,6 @@ class Recorder(threading.Thread):
             )
             return
 
-        shared_attrs = shared_attrs_bytes.decode("utf-8")
         dbstate.attributes = None
         # Matching attributes found in the pending commit
         if pending_attributes := self._pending_state_attributes.get(shared_attrs):
@@ -796,7 +794,7 @@ class Recorder(threading.Thread):
         elif attributes_id := self._state_attributes_ids.get(shared_attrs):
             dbstate.attributes_id = attributes_id
         else:
-            attr_hash = StateAttributes.hash_shared_attrs_bytes(shared_attrs_bytes)
+            attr_hash = StateAttributes.hash_shared_attrs(shared_attrs)
             # Matching attributes found in the database
             if attributes_id := self._find_shared_attr_in_db(attr_hash, shared_attrs):
                 dbstate.attributes_id = attributes_id
diff --git a/homeassistant/components/recorder/models.py b/homeassistant/components/recorder/models.py
index e0a22184cc8..70c816c2af5 100644
--- a/homeassistant/components/recorder/models.py
+++ b/homeassistant/components/recorder/models.py
@@ -3,12 +3,12 @@ from __future__ import annotations
 
 from collections.abc import Callable
 from datetime import datetime, timedelta
+import json
 import logging
 from typing import Any, TypedDict, cast, overload
 
 import ciso8601
 from fnvhash import fnv1a_32
-import orjson
 from sqlalchemy import (
     JSON,
     BigInteger,
@@ -46,10 +46,9 @@ from homeassistant.const import (
     MAX_LENGTH_STATE_STATE,
 )
 from homeassistant.core import Context, Event, EventOrigin, State, split_entity_id
-from homeassistant.helpers.json import JSON_DUMP, json_bytes
 import homeassistant.util.dt as dt_util
 
-from .const import ALL_DOMAIN_EXCLUDE_ATTRS
+from .const import ALL_DOMAIN_EXCLUDE_ATTRS, JSON_DUMP
 
 # SQLAlchemy Schema
 # pylint: disable=invalid-name
@@ -133,7 +132,7 @@ class JSONLiteral(JSON):  # type: ignore[misc]
 
         def process(value: Any) -> str:
             """Dump json."""
-            return JSON_DUMP(value)
+            return json.dumps(value)
 
         return process
 
@@ -200,7 +199,7 @@ class Events(Base):  # type: ignore[misc,valid-type]
         try:
             return Event(
                 self.event_type,
-                orjson.loads(self.event_data) if self.event_data else {},
+                json.loads(self.event_data) if self.event_data else {},
                 EventOrigin(self.origin)
                 if self.origin
                 else EVENT_ORIGIN_ORDER[self.origin_idx],
@@ -208,7 +207,7 @@ class Events(Base):  # type: ignore[misc,valid-type]
                 context=context,
             )
         except ValueError:
-            # When orjson.loads fails
+            # When json.loads fails
             _LOGGER.exception("Error converting to event: %s", self)
             return None
 
@@ -236,26 +235,25 @@ class EventData(Base):  # type: ignore[misc,valid-type]
     @staticmethod
     def from_event(event: Event) -> EventData:
         """Create object from an event."""
-        shared_data = json_bytes(event.data)
+        shared_data = JSON_DUMP(event.data)
         return EventData(
-            shared_data=shared_data.decode("utf-8"),
-            hash=EventData.hash_shared_data_bytes(shared_data),
+            shared_data=shared_data, hash=EventData.hash_shared_data(shared_data)
         )
 
     @staticmethod
-    def shared_data_bytes_from_event(event: Event) -> bytes:
-        """Create shared_data from an event."""
-        return json_bytes(event.data)
+    def shared_data_from_event(event: Event) -> str:
+        """Create shared_attrs from an event."""
+        return JSON_DUMP(event.data)
 
     @staticmethod
-    def hash_shared_data_bytes(shared_data_bytes: bytes) -> int:
+    def hash_shared_data(shared_data: str) -> int:
         """Return the hash of json encoded shared data."""
-        return cast(int, fnv1a_32(shared_data_bytes))
+        return cast(int, fnv1a_32(shared_data.encode("utf-8")))
 
     def to_native(self) -> dict[str, Any]:
         """Convert to an HA state object."""
         try:
-            return cast(dict[str, Any], orjson.loads(self.shared_data))
+            return cast(dict[str, Any], json.loads(self.shared_data))
         except ValueError:
             _LOGGER.exception("Error converting row to event data: %s", self)
             return {}
@@ -342,9 +340,9 @@ class States(Base):  # type: ignore[misc,valid-type]
             parent_id=self.context_parent_id,
         )
         try:
-            attrs = orjson.loads(self.attributes) if self.attributes else {}
+            attrs = json.loads(self.attributes) if self.attributes else {}
         except ValueError:
-            # When orjson.loads fails
+            # When json.loads fails
             _LOGGER.exception("Error converting row to state: %s", self)
             return None
         if self.last_changed is None or self.last_changed == self.last_updated:
@@ -390,39 +388,40 @@ class StateAttributes(Base):  # type: ignore[misc,valid-type]
         """Create object from a state_changed event."""
         state: State | None = event.data.get("new_state")
         # None state means the state was removed from the state machine
-        attr_bytes = b"{}" if state is None else json_bytes(state.attributes)
-        dbstate = StateAttributes(shared_attrs=attr_bytes.decode("utf-8"))
-        dbstate.hash = StateAttributes.hash_shared_attrs_bytes(attr_bytes)
+        dbstate = StateAttributes(
+            shared_attrs="{}" if state is None else JSON_DUMP(state.attributes)
+        )
+        dbstate.hash = StateAttributes.hash_shared_attrs(dbstate.shared_attrs)
         return dbstate
 
     @staticmethod
-    def shared_attrs_bytes_from_event(
+    def shared_attrs_from_event(
         event: Event, exclude_attrs_by_domain: dict[str, set[str]]
-    ) -> bytes:
+    ) -> str:
         """Create shared_attrs from a state_changed event."""
         state: State | None = event.data.get("new_state")
         # None state means the state was removed from the state machine
         if state is None:
-            return b"{}"
+            return "{}"
         domain = split_entity_id(state.entity_id)[0]
         exclude_attrs = (
             exclude_attrs_by_domain.get(domain, set()) | ALL_DOMAIN_EXCLUDE_ATTRS
         )
-        return json_bytes(
+        return JSON_DUMP(
             {k: v for k, v in state.attributes.items() if k not in exclude_attrs}
         )
 
     @staticmethod
-    def hash_shared_attrs_bytes(shared_attrs_bytes: bytes) -> int:
-        """Return the hash of orjson encoded shared attributes."""
-        return cast(int, fnv1a_32(shared_attrs_bytes))
+    def hash_shared_attrs(shared_attrs: str) -> int:
+        """Return the hash of json encoded shared attributes."""
+        return cast(int, fnv1a_32(shared_attrs.encode("utf-8")))
 
     def to_native(self) -> dict[str, Any]:
         """Convert to an HA state object."""
         try:
-            return cast(dict[str, Any], orjson.loads(self.shared_attrs))
+            return cast(dict[str, Any], json.loads(self.shared_attrs))
         except ValueError:
-            # When orjson.loads fails
+            # When json.loads fails
             _LOGGER.exception("Error converting row to state attributes: %s", self)
             return {}
 
@@ -836,7 +835,7 @@ def decode_attributes_from_row(
     if not source or source == EMPTY_JSON_OBJECT:
         return {}
     try:
-        attr_cache[source] = attributes = orjson.loads(source)
+        attr_cache[source] = attributes = json.loads(source)
     except ValueError:
         _LOGGER.exception("Error converting row to state attributes: %s", source)
         attr_cache[source] = attributes = {}
diff --git a/homeassistant/components/websocket_api/commands.py b/homeassistant/components/websocket_api/commands.py
index bea08722eb0..61bcb8badf0 100644
--- a/homeassistant/components/websocket_api/commands.py
+++ b/homeassistant/components/websocket_api/commands.py
@@ -29,7 +29,7 @@ from homeassistant.helpers.event import (
     TrackTemplateResult,
     async_track_template_result,
 )
-from homeassistant.helpers.json import JSON_DUMP, ExtendedJSONEncoder
+from homeassistant.helpers.json import ExtendedJSONEncoder
 from homeassistant.helpers.service import async_get_all_descriptions
 from homeassistant.loader import IntegrationNotFound, async_get_integration
 from homeassistant.setup import DATA_SETUP_TIME, async_get_loaded_integrations
@@ -241,13 +241,13 @@ def handle_get_states(
     # to succeed for the UI to show.
     response = messages.result_message(msg["id"], states)
     try:
-        connection.send_message(JSON_DUMP(response))
+        connection.send_message(const.JSON_DUMP(response))
         return
     except (ValueError, TypeError):
         connection.logger.error(
             "Unable to serialize to JSON. Bad data found at %s",
             format_unserializable_data(
-                find_paths_unserializable_data(response, dump=JSON_DUMP)
+                find_paths_unserializable_data(response, dump=const.JSON_DUMP)
             ),
         )
     del response
@@ -256,13 +256,13 @@ def handle_get_states(
     serialized = []
     for state in states:
         try:
-            serialized.append(JSON_DUMP(state))
+            serialized.append(const.JSON_DUMP(state))
         except (ValueError, TypeError):
             # Error is already logged above
             pass
 
     # We now have partially serialized states. Craft some JSON.
-    response2 = JSON_DUMP(messages.result_message(msg["id"], ["TO_REPLACE"]))
+    response2 = const.JSON_DUMP(messages.result_message(msg["id"], ["TO_REPLACE"]))
     response2 = response2.replace('"TO_REPLACE"', ", ".join(serialized))
     connection.send_message(response2)
 
@@ -315,13 +315,13 @@ def handle_subscribe_entities(
     # to succeed for the UI to show.
     response = messages.event_message(msg["id"], data)
     try:
-        connection.send_message(JSON_DUMP(response))
+        connection.send_message(const.JSON_DUMP(response))
         return
     except (ValueError, TypeError):
         connection.logger.error(
             "Unable to serialize to JSON. Bad data found at %s",
             format_unserializable_data(
-                find_paths_unserializable_data(response, dump=JSON_DUMP)
+                find_paths_unserializable_data(response, dump=const.JSON_DUMP)
             ),
         )
     del response
@@ -330,14 +330,14 @@ def handle_subscribe_entities(
     cannot_serialize: list[str] = []
     for entity_id, state_dict in add_entities.items():
         try:
-            JSON_DUMP(state_dict)
+            const.JSON_DUMP(state_dict)
         except (ValueError, TypeError):
             cannot_serialize.append(entity_id)
 
     for entity_id in cannot_serialize:
         del add_entities[entity_id]
 
-    connection.send_message(JSON_DUMP(messages.event_message(msg["id"], data)))
+    connection.send_message(const.JSON_DUMP(messages.event_message(msg["id"], data)))
 
 
 @decorators.websocket_command({vol.Required("type"): "get_services"})
diff --git a/homeassistant/components/websocket_api/connection.py b/homeassistant/components/websocket_api/connection.py
index 26c4c6f8321..0280863f83e 100644
--- a/homeassistant/components/websocket_api/connection.py
+++ b/homeassistant/components/websocket_api/connection.py
@@ -11,7 +11,6 @@ import voluptuous as vol
 from homeassistant.auth.models import RefreshToken, User
 from homeassistant.core import Context, HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError, Unauthorized
-from homeassistant.helpers.json import JSON_DUMP
 
 from . import const, messages
 
@@ -57,7 +56,7 @@ class ActiveConnection:
     async def send_big_result(self, msg_id: int, result: Any) -> None:
         """Send a result message that would be expensive to JSON serialize."""
         content = await self.hass.async_add_executor_job(
-            JSON_DUMP, messages.result_message(msg_id, result)
+            const.JSON_DUMP, messages.result_message(msg_id, result)
         )
         self.send_message(content)
 
diff --git a/homeassistant/components/websocket_api/const.py b/homeassistant/components/websocket_api/const.py
index 60a00126092..107cf6d0270 100644
--- a/homeassistant/components/websocket_api/const.py
+++ b/homeassistant/components/websocket_api/const.py
@@ -4,9 +4,12 @@ from __future__ import annotations
 import asyncio
 from collections.abc import Awaitable, Callable
 from concurrent import futures
+from functools import partial
+import json
 from typing import TYPE_CHECKING, Any, Final
 
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.json import JSONEncoder
 
 if TYPE_CHECKING:
     from .connection import ActiveConnection  # noqa: F401
@@ -50,6 +53,10 @@ SIGNAL_WEBSOCKET_DISCONNECTED: Final = "websocket_disconnected"
 # Data used to store the current connection list
 DATA_CONNECTIONS: Final = f"{DOMAIN}.connections"
 
+JSON_DUMP: Final = partial(
+    json.dumps, cls=JSONEncoder, allow_nan=False, separators=(",", ":")
+)
+
 COMPRESSED_STATE_STATE = "s"
 COMPRESSED_STATE_ATTRIBUTES = "a"
 COMPRESSED_STATE_CONTEXT = "c"
diff --git a/homeassistant/components/websocket_api/messages.py b/homeassistant/components/websocket_api/messages.py
index c3e5f6bb5f5..f546ba5eec6 100644
--- a/homeassistant/components/websocket_api/messages.py
+++ b/homeassistant/components/websocket_api/messages.py
@@ -9,7 +9,6 @@ import voluptuous as vol
 
 from homeassistant.core import Event, State
 from homeassistant.helpers import config_validation as cv
-from homeassistant.helpers.json import JSON_DUMP
 from homeassistant.util.json import (
     find_paths_unserializable_data,
     format_unserializable_data,
@@ -194,15 +193,15 @@ def compressed_state_dict_add(state: State) -> dict[str, Any]:
 def message_to_json(message: dict[str, Any]) -> str:
     """Serialize a websocket message to json."""
     try:
-        return JSON_DUMP(message)
+        return const.JSON_DUMP(message)
     except (ValueError, TypeError):
         _LOGGER.error(
             "Unable to serialize to JSON. Bad data found at %s",
             format_unserializable_data(
-                find_paths_unserializable_data(message, dump=JSON_DUMP)
+                find_paths_unserializable_data(message, dump=const.JSON_DUMP)
             ),
         )
-        return JSON_DUMP(
+        return const.JSON_DUMP(
             error_message(
                 message["id"], const.ERR_UNKNOWN_ERROR, "Invalid JSON in response"
             )
diff --git a/homeassistant/helpers/aiohttp_client.py b/homeassistant/helpers/aiohttp_client.py
index 2e56698db41..eaabb002b0a 100644
--- a/homeassistant/helpers/aiohttp_client.py
+++ b/homeassistant/helpers/aiohttp_client.py
@@ -14,7 +14,6 @@ from aiohttp import web
 from aiohttp.hdrs import CONTENT_TYPE, USER_AGENT
 from aiohttp.web_exceptions import HTTPBadGateway, HTTPGatewayTimeout
 import async_timeout
-import orjson
 
 from homeassistant import config_entries
 from homeassistant.const import EVENT_HOMEASSISTANT_CLOSE, __version__
@@ -98,7 +97,6 @@ def _async_create_clientsession(
     """Create a new ClientSession with kwargs, i.e. for cookies."""
     clientsession = aiohttp.ClientSession(
         connector=_async_get_connector(hass, verify_ssl),
-        json_serialize=lambda x: orjson.dumps(x).decode("utf-8"),
         **kwargs,
     )
     # Prevent packages accidentally overriding our default headers
diff --git a/homeassistant/helpers/json.py b/homeassistant/helpers/json.py
index 912667a13b5..c581e5a9361 100644
--- a/homeassistant/helpers/json.py
+++ b/homeassistant/helpers/json.py
@@ -1,10 +1,7 @@
 """Helpers to help with encoding Home Assistant objects in JSON."""
 import datetime
 import json
-from pathlib import Path
-from typing import Any, Final
-
-import orjson
+from typing import Any
 
 
 class JSONEncoder(json.JSONEncoder):
@@ -25,20 +22,6 @@ class JSONEncoder(json.JSONEncoder):
         return json.JSONEncoder.default(self, o)
 
 
-def json_encoder_default(obj: Any) -> Any:
-    """Convert Home Assistant objects.
-
-    Hand other objects to the original method.
-    """
-    if isinstance(obj, set):
-        return list(obj)
-    if hasattr(obj, "as_dict"):
-        return obj.as_dict()
-    if isinstance(obj, Path):
-        return obj.as_posix()
-    raise TypeError
-
-
 class ExtendedJSONEncoder(JSONEncoder):
     """JSONEncoder that supports Home Assistant objects and falls back to repr(o)."""
 
@@ -57,31 +40,3 @@ class ExtendedJSONEncoder(JSONEncoder):
             return super().default(o)
         except TypeError:
             return {"__type": str(type(o)), "repr": repr(o)}
-
-
-def json_bytes(data: Any) -> bytes:
-    """Dump json bytes."""
-    return orjson.dumps(
-        data, option=orjson.OPT_NON_STR_KEYS, default=json_encoder_default
-    )
-
-
-def json_dumps(data: Any) -> str:
-    """Dump json string.
-
-    orjson supports serializing dataclasses natively which
-    eliminates the need to implement as_dict in many places
-    when the data is already in a dataclass. This works
-    well as long as all the data in the dataclass can also
-    be serialized.
-
-    If it turns out to be a problem we can disable this
-    with option |= orjson.OPT_PASSTHROUGH_DATACLASS and it
-    will fallback to as_dict
-    """
-    return orjson.dumps(
-        data, option=orjson.OPT_NON_STR_KEYS, default=json_encoder_default
-    ).decode("utf-8")
-
-
-JSON_DUMP: Final = json_dumps
diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index c158d26a9aa..a3d8a00bcfb 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -20,7 +20,6 @@ httpx==0.23.0
 ifaddr==0.1.7
 jinja2==3.1.2
 lru-dict==1.1.7
-orjson==3.6.8
 paho-mqtt==1.6.1
 pillow==9.1.1
 pip>=21.0,<22.2
diff --git a/homeassistant/scripts/benchmark/__init__.py b/homeassistant/scripts/benchmark/__init__.py
index efbfec5e961..a681b3e210d 100644
--- a/homeassistant/scripts/benchmark/__init__.py
+++ b/homeassistant/scripts/benchmark/__init__.py
@@ -12,13 +12,14 @@ from timeit import default_timer as timer
 from typing import TypeVar
 
 from homeassistant import core
+from homeassistant.components.websocket_api.const import JSON_DUMP
 from homeassistant.const import EVENT_STATE_CHANGED
 from homeassistant.helpers.entityfilter import convert_include_exclude_filter
 from homeassistant.helpers.event import (
     async_track_state_change,
     async_track_state_change_event,
 )
-from homeassistant.helpers.json import JSON_DUMP, JSONEncoder
+from homeassistant.helpers.json import JSONEncoder
 
 # mypy: allow-untyped-calls, allow-untyped-defs, no-check-untyped-defs
 # mypy: no-warn-return-any
diff --git a/homeassistant/util/json.py b/homeassistant/util/json.py
index 82ecfd34d6d..fdee7a7a90f 100644
--- a/homeassistant/util/json.py
+++ b/homeassistant/util/json.py
@@ -7,8 +7,6 @@ import json
 import logging
 from typing import Any
 
-import orjson
-
 from homeassistant.core import Event, State
 from homeassistant.exceptions import HomeAssistantError
 
@@ -32,7 +30,7 @@ def load_json(filename: str, default: list | dict | None = None) -> list | dict:
     """
     try:
         with open(filename, encoding="utf-8") as fdesc:
-            return orjson.loads(fdesc.read())  # type: ignore[no-any-return]
+            return json.loads(fdesc.read())  # type: ignore[no-any-return]
     except FileNotFoundError:
         # This is not a fatal error
         _LOGGER.debug("JSON file not found: %s", filename)
@@ -58,10 +56,7 @@ def save_json(
     Returns True on success.
     """
     try:
-        if encoder:
-            json_data = json.dumps(data, indent=2, cls=encoder)
-        else:
-            json_data = orjson.dumps(data, option=orjson.OPT_INDENT_2).decode("utf-8")
+        json_data = json.dumps(data, indent=4, cls=encoder)
     except TypeError as error:
         msg = f"Failed to serialize to JSON: {filename}. Bad data at {format_unserializable_data(find_paths_unserializable_data(data))}"
         _LOGGER.error(msg)
diff --git a/pyproject.toml b/pyproject.toml
index 7e62bafd6af..cc745f58ad6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,6 @@ dependencies    = [
     "PyJWT==2.4.0",
     # PyJWT has loose dependency. We want the latest one.
     "cryptography==36.0.2",
-    "orjson==3.6.8",
     "pip>=21.0,<22.2",
     "python-slugify==4.0.1",
     "pyyaml==6.0",
@@ -120,7 +119,6 @@ extension-pkg-allow-list = [
     "av.audio.stream",
     "av.stream",
     "ciso8601",
-    "orjson",
     "cv2",
 ]
 
diff --git a/requirements.txt b/requirements.txt
index 9805ae7cd47..fe2bf87ad25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,6 @@ ifaddr==0.1.7
 jinja2==3.1.2
 PyJWT==2.4.0
 cryptography==36.0.2
-orjson==3.6.8
 pip>=21.0,<22.2
 python-slugify==4.0.1
 pyyaml==6.0
diff --git a/tests/components/energy/test_validate.py b/tests/components/energy/test_validate.py
index e802688daaf..37ebe4147c5 100644
--- a/tests/components/energy/test_validate.py
+++ b/tests/components/energy/test_validate.py
@@ -4,7 +4,6 @@ from unittest.mock import patch
 import pytest
 
 from homeassistant.components.energy import async_get_manager, validate
-from homeassistant.helpers.json import JSON_DUMP
 from homeassistant.setup import async_setup_component
 
 
@@ -409,11 +408,7 @@ async def test_validation_grid(
         },
     )
 
-    result = await validate.async_validate(hass)
-    # verify its also json serializable
-    JSON_DUMP(result)
-
-    assert result.as_dict() == {
+    assert (await validate.async_validate(hass)).as_dict() == {
         "energy_sources": [
             [
                 {
diff --git a/tests/components/websocket_api/test_commands.py b/tests/components/websocket_api/test_commands.py
index 0f4695596fc..4d3302f7c13 100644
--- a/tests/components/websocket_api/test_commands.py
+++ b/tests/components/websocket_api/test_commands.py
@@ -619,15 +619,12 @@ async def test_states_filters_visible(hass, hass_admin_user, websocket_client):
 
 
 async def test_get_states_not_allows_nan(hass, websocket_client):
-    """Test get_states command converts NaN to None."""
+    """Test get_states command not allows NaN floats."""
     hass.states.async_set("greeting.hello", "world")
     hass.states.async_set("greeting.bad", "data", {"hello": float("NaN")})
     hass.states.async_set("greeting.bye", "universe")
 
     await websocket_client.send_json({"id": 5, "type": "get_states"})
-    bad = dict(hass.states.get("greeting.bad").as_dict())
-    bad["attributes"] = dict(bad["attributes"])
-    bad["attributes"]["hello"] = None
 
     msg = await websocket_client.receive_json()
     assert msg["id"] == 5
@@ -635,7 +632,6 @@ async def test_get_states_not_allows_nan(hass, websocket_client):
     assert msg["success"]
     assert msg["result"] == [
         hass.states.get("greeting.hello").as_dict(),
-        bad,
         hass.states.get("greeting.bye").as_dict(),
     ]