diff --git a/esphome/components/mhz19/mhz19.cpp b/esphome/components/mhz19/mhz19.cpp
index 65deb26a16..3d97a9a750 100644
--- a/esphome/components/mhz19/mhz19.cpp
+++ b/esphome/components/mhz19/mhz19.cpp
@@ -11,7 +11,6 @@ static const uint8_t MHZ19_COMMAND_GET_PPM[] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x
 static const uint8_t MHZ19_COMMAND_ABC_ENABLE[] = {0xff, 0x01, 0x79, 0xA0, 0x00, 0x00, 0x00, 0x00};
 static const uint8_t MHZ19_COMMAND_ABC_DISABLE[] = {0xff, 0x01, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00};
 static const uint8_t MHZ19_COMMAND_CALIBRATE_ZERO[] = {0xff, 0x01, 0x87, 0x00, 0x00, 0x00, 0x00, 0x00};
-static const uint8_t MHZ19_COMMAND_CALIBRATE_SPAN[] = {0xff, 0x01, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00};
 
 uint8_t mhz19_checksum(const uint8_t *command) {
   uint8_t sum = 0;
@@ -67,11 +66,6 @@ void MHZ19Component::calibrate_zero() {
   this->mhz19_write_command_(MHZ19_COMMAND_CALIBRATE_ZERO, nullptr);
 }
 
-void MHZ19Component::calibrate_span() {
-  ESP_LOGI(TAG, "MHZ19 Calibrating span point");
-  this->mhz19_write_command_(MHZ19_COMMAND_CALIBRATE_SPAN, nullptr);
-}
-
 void MHZ19Component::abc_enable() {
   ESP_LOGI(TAG, "MHZ19 Enabling ABC");
   this->mhz19_write_command_(MHZ19_COMMAND_ABC_ENABLE, nullptr);
diff --git a/esphome/components/mhz19/mhz19.h b/esphome/components/mhz19/mhz19.h
index 17350691aa..9ee18fa418 100644
--- a/esphome/components/mhz19/mhz19.h
+++ b/esphome/components/mhz19/mhz19.h
@@ -23,7 +23,6 @@ class MHZ19Component : public PollingComponent, public uart::UARTDevice {
   void dump_config() override;
 
   void calibrate_zero();
-  void calibrate_span();
   void abc_enable();
   void abc_disable();
 
@@ -48,15 +47,6 @@ template<typename... Ts> class MHZ19CalibrateZeroAction : public Action<Ts...> {
   MHZ19Component *mhz19_;
 };
 
-template<typename... Ts> class MHZ19CalibrateSpanAction : public Action<Ts...> {
- public:
-  MHZ19CalibrateSpanAction(MHZ19Component *mhz19) : mhz19_(mhz19) {}
-  void play(Ts... x) override { this->mhz19_->calibrate_span(); }
-
- protected:
-  MHZ19Component *mhz19_;
-};
-
 template<typename... Ts> class MHZ19ABCEnableAction : public Action<Ts...> {
  public:
   MHZ19ABCEnableAction(MHZ19Component *mhz19) : mhz19_(mhz19) {}
diff --git a/esphome/components/mhz19/sensor.py b/esphome/components/mhz19/sensor.py
index 325e326fa0..e3b87bf7aa 100644
--- a/esphome/components/mhz19/sensor.py
+++ b/esphome/components/mhz19/sensor.py
@@ -13,7 +13,6 @@ CONF_AUTOMATIC_BASELINE_CALIBRATION = 'automatic_baseline_calibration'
 mhz19_ns = cg.esphome_ns.namespace('mhz19')
 MHZ19Component = mhz19_ns.class_('MHZ19Component', cg.PollingComponent, uart.UARTDevice)
 MHZ19CalibrateZeroAction = mhz19_ns.class_('MHZ19CalibrateZeroAction', automation.Action)
-MHZ19CalibrateSpanAction = mhz19_ns.class_('MHZ19CalibrateSpanAction', automation.Action)
 MHZ19ABCEnableAction = mhz19_ns.class_('MHZ19ABCEnableAction', automation.Action)
 MHZ19ABCDisableAction = mhz19_ns.class_('MHZ19ABCDisableAction', automation.Action)
 
@@ -48,7 +47,6 @@ CALIBRATION_ACTION_SCHEMA = maybe_simple_id({
 
 
 @automation.register_action('mhz19.calibrate_zero', MHZ19CalibrateZeroAction, CALIBRATION_ACTION_SCHEMA)
-@automation.register_action('mhz19.calibrate_span', MHZ19CalibrateSpanAction, CALIBRATION_ACTION_SCHEMA)
 @automation.register_action('mhz19.abc_enable', MHZ19ABCEnableAction, CALIBRATION_ACTION_SCHEMA)
 @automation.register_action('mhz19.abc_disable', MHZ19ABCDisableAction, CALIBRATION_ACTION_SCHEMA)
 def mhz19_calibration_to_code(config, action_id, template_arg, args):