diff --git a/.coveragerc b/.coveragerc
index e6b268ed38bc08f7d6ac622f52f46c82a686e7fc..48ea037558787f5413b2b81e3382ed95956a9ccf 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -220,11 +220,11 @@ omit =
     homeassistant/components/sensor/google_travel_time.py
     homeassistant/components/sensor/gpsd.py
     homeassistant/components/sensor/gtfs.py
-    homeassistant/components/sensor/hmz19.py
     homeassistant/components/sensor/hp_ilo.py
     homeassistant/components/sensor/imap.py
     homeassistant/components/sensor/lastfm.py
     homeassistant/components/sensor/loopenergy.py
+    homeassistant/components/sensor/mhz19.py
     homeassistant/components/sensor/mqtt_room.py
     homeassistant/components/sensor/neurio_energy.py
     homeassistant/components/sensor/nzbget.py
diff --git a/homeassistant/components/sensor/hmz19.py b/homeassistant/components/sensor/mhz19.py
similarity index 94%
rename from homeassistant/components/sensor/hmz19.py
rename to homeassistant/components/sensor/mhz19.py
index 9cf3e4e4dd2e2005afcb37763f0c59bd8fde7c24..c811a193335bcf181e51e07f44174e84660b6d83 100644
--- a/homeassistant/components/sensor/hmz19.py
+++ b/homeassistant/components/sensor/mhz19.py
@@ -2,7 +2,7 @@
 Support for CO2 sensor connected to a serial port.
 
 For more details about this platform, please refer to the documentation at
-https://home-assistant.io/components/sensor.hmz19/
+https://home-assistant.io/components/sensor.mhz19/
 """
 import logging
 import voluptuous as vol
@@ -37,11 +37,11 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
                       config.get(CONF_SERIAL_DEVICE), err)
         return False
 
-    dev = HMZ19Sensor(config.get(CONF_SERIAL_DEVICE), config.get(CONF_NAME))
+    dev = MHZ19Sensor(config.get(CONF_SERIAL_DEVICE), config.get(CONF_NAME))
     add_devices([dev])
 
 
-class HMZ19Sensor(Entity):
+class MHZ19Sensor(Entity):
     """Representation of an CO2 sensor."""
 
     def __init__(self, serial_device, name):
diff --git a/requirements_all.txt b/requirements_all.txt
index af472e31cca20187ca4dfbab7b5e30d307de25ab..e9d125d764a34d123a42383e20175bf9f290d99d 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -261,7 +261,7 @@ pilight==0.0.2
 # homeassistant.components.sensor.plex
 plexapi==2.0.2
 
-# homeassistant.components.sensor.hmz19
+# homeassistant.components.sensor.mhz19
 # homeassistant.components.sensor.serial_pm
 pmsensor==0.3