diff --git a/esphome/components/coolix/__init__.py b/esphome/components/coolix/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/esphome/components/coolix/climate.py b/esphome/components/coolix/climate.py
new file mode 100644
index 0000000000..750a97d087
--- /dev/null
+++ b/esphome/components/coolix/climate.py
@@ -0,0 +1,36 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import climate, remote_transmitter, sensor
+from esphome.const import CONF_ID, CONF_SENSOR
+
+AUTO_LOAD = ['sensor']
+
+coolix_ns = cg.esphome_ns.namespace('coolix')
+CoolixClimate = coolix_ns.class_('CoolixClimate', climate.Climate, cg.Component)
+
+CONF_TRANSMITTER_ID = 'transmitter_id'
+CONF_SUPPORTS_HEAT = 'supports_heat'
+CONF_SUPPORTS_COOL = 'supports_cool'
+
+CONFIG_SCHEMA = cv.All(climate.CLIMATE_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(CoolixClimate),
+    cv.GenerateID(CONF_TRANSMITTER_ID): cv.use_id(remote_transmitter.RemoteTransmitterComponent),
+    cv.Optional(CONF_SUPPORTS_COOL, default=True): cv.boolean,
+    cv.Optional(CONF_SUPPORTS_HEAT, default=True): cv.boolean,
+    cv.Optional(CONF_SENSOR): cv.use_id(sensor.Sensor),
+}).extend(cv.COMPONENT_SCHEMA))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield climate.register_climate(var, config)
+
+    cg.add(var.set_supports_cool(config[CONF_SUPPORTS_COOL]))
+    cg.add(var.set_supports_heat(config[CONF_SUPPORTS_HEAT]))
+    if CONF_SENSOR in config:
+        sens = yield cg.get_variable(config[CONF_SENSOR])
+        cg.add(var.set_sensor(sens))
+
+    transmitter = yield cg.get_variable(config[CONF_TRANSMITTER_ID])
+    cg.add(var.set_transmitter(transmitter))
diff --git a/esphome/components/coolix/coolix.cpp b/esphome/components/coolix/coolix.cpp
new file mode 100644
index 0000000000..ffc67adeb3
--- /dev/null
+++ b/esphome/components/coolix/coolix.cpp
@@ -0,0 +1,170 @@
+#include "coolix.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace coolix {
+
+static const char *TAG = "coolix.climate";
+
+const uint32_t COOLIX_OFF = 0xB27BE0;
+// On, 25C, Mode: Auto, Fan: Auto, Zone Follow: Off, Sensor Temp: Ignore.
+const uint32_t COOLIX_DEFAULT_STATE = 0xB2BFC8;
+const uint32_t COOLIX_DEFAULT_STATE_AUTO_24_FAN = 0xB21F48;
+const uint8_t COOLIX_COOL = 0b00;
+const uint8_t COOLIX_DRY = 0b01;
+const uint8_t COOLIX_AUTO = 0b10;
+const uint8_t COOLIX_HEAT = 0b11;
+const uint8_t COOLIX_FAN = 4;                                  // Synthetic.
+const uint32_t COOLIX_MODE_MASK = 0b000000000000000000001100;  // 0xC
+
+// Temperature
+const uint8_t COOLIX_TEMP_MIN = 17;  // Celsius
+const uint8_t COOLIX_TEMP_MAX = 30;  // Celsius
+const uint8_t COOLIX_TEMP_RANGE = COOLIX_TEMP_MAX - COOLIX_TEMP_MIN + 1;
+const uint8_t COOLIX_FAN_TEMP_CODE = 0b1110;  // Part of Fan Mode.
+const uint32_t COOLIX_TEMP_MASK = 0b11110000;
+const uint8_t COOLIX_TEMP_MAP[COOLIX_TEMP_RANGE] = {
+    0b0000,  // 17C
+    0b0001,  // 18c
+    0b0011,  // 19C
+    0b0010,  // 20C
+    0b0110,  // 21C
+    0b0111,  // 22C
+    0b0101,  // 23C
+    0b0100,  // 24C
+    0b1100,  // 25C
+    0b1101,  // 26C
+    0b1001,  // 27C
+    0b1000,  // 28C
+    0b1010,  // 29C
+    0b1011   // 30C
+};
+
+// Constants
+// Pulse parms are *50-100 for the Mark and *50+100 for the space
+// First MARK is the one after the long gap
+// pulse parameters in usec
+const uint16_t COOLIX_TICK = 560;  // Approximately 21 cycles at 38kHz
+const uint16_t COOLIX_BIT_MARK_TICKS = 1;
+const uint16_t COOLIX_BIT_MARK = COOLIX_BIT_MARK_TICKS * COOLIX_TICK;
+const uint16_t COOLIX_ONE_SPACE_TICKS = 3;
+const uint16_t COOLIX_ONE_SPACE = COOLIX_ONE_SPACE_TICKS * COOLIX_TICK;
+const uint16_t COOLIX_ZERO_SPACE_TICKS = 1;
+const uint16_t COOLIX_ZERO_SPACE = COOLIX_ZERO_SPACE_TICKS * COOLIX_TICK;
+const uint16_t COOLIX_HEADER_MARK_TICKS = 8;
+const uint16_t COOLIX_HEADER_MARK = COOLIX_HEADER_MARK_TICKS * COOLIX_TICK;
+const uint16_t COOLIX_HEADER_SPACE_TICKS = 8;
+const uint16_t COOLIX_HEADER_SPACE = COOLIX_HEADER_SPACE_TICKS * COOLIX_TICK;
+const uint16_t COOLIX_MIN_GAP_TICKS = COOLIX_HEADER_MARK_TICKS + COOLIX_ZERO_SPACE_TICKS;
+const uint16_t COOLIX_MIN_GAP = COOLIX_MIN_GAP_TICKS * COOLIX_TICK;
+
+const uint16_t COOLIX_BITS = 24;
+
+climate::ClimateTraits CoolixClimate::traits() {
+  auto traits = climate::ClimateTraits();
+  traits.set_supports_current_temperature(this->sensor_ != nullptr);
+  traits.set_supports_auto_mode(true);
+  traits.set_supports_cool_mode(this->supports_cool_);
+  traits.set_supports_heat_mode(this->supports_heat_);
+  traits.set_supports_two_point_target_temperature(false);
+  traits.set_supports_away(false);
+  traits.set_visual_min_temperature(17);
+  traits.set_visual_max_temperature(30);
+  traits.set_visual_temperature_step(1);
+  return traits;
+}
+
+void CoolixClimate::setup() {
+  if (this->sensor_) {
+    this->sensor_->add_on_state_callback([this](float state) {
+      this->current_temperature = state;
+      // current temperature changed, publish state
+      this->publish_state();
+    });
+    this->current_temperature = this->sensor_->state;
+  } else
+    this->current_temperature = NAN;
+  // restore set points
+  auto restore = this->restore_state_();
+  if (restore.has_value()) {
+    restore->apply(this);
+  } else {
+    // restore from defaults
+    this->mode = climate::CLIMATE_MODE_AUTO;
+    // initialize target temperature to some value so that it's not NAN
+    this->target_temperature = roundf(this->current_temperature);
+  }
+}
+
+void CoolixClimate::control(const climate::ClimateCall &call) {
+  if (call.get_mode().has_value())
+    this->mode = *call.get_mode();
+  if (call.get_target_temperature().has_value())
+    this->target_temperature = *call.get_target_temperature();
+
+  this->transmit_state_();
+  this->publish_state();
+}
+
+void CoolixClimate::transmit_state_() {
+  uint32_t remote_state;
+
+  switch (this->mode) {
+    case climate::CLIMATE_MODE_COOL:
+      remote_state = (COOLIX_DEFAULT_STATE & ~COOLIX_MODE_MASK) | (COOLIX_COOL << 2);
+      break;
+    case climate::CLIMATE_MODE_HEAT:
+      remote_state = (COOLIX_DEFAULT_STATE & ~COOLIX_MODE_MASK) | (COOLIX_HEAT << 2);
+      break;
+    case climate::CLIMATE_MODE_AUTO:
+      remote_state = COOLIX_DEFAULT_STATE_AUTO_24_FAN;
+      break;
+    case climate::CLIMATE_MODE_OFF:
+    default:
+      remote_state = COOLIX_OFF;
+      break;
+  }
+  if (this->mode != climate::CLIMATE_MODE_OFF) {
+    auto temp = (uint8_t) roundf(clamp(this->target_temperature, COOLIX_TEMP_MIN, COOLIX_TEMP_MAX));
+    remote_state &= ~COOLIX_TEMP_MASK;  // Clear the old temp.
+    remote_state |= (COOLIX_TEMP_MAP[temp - COOLIX_TEMP_MIN] << 4);
+  }
+
+  ESP_LOGV(TAG, "Sending coolix code: %u", remote_state);
+
+  auto transmit = this->transmitter_->transmit();
+  auto data = transmit.get_data();
+
+  data->set_carrier_frequency(38000);
+  uint16_t repeat = 1;
+  for (uint16_t r = 0; r <= repeat; r++) {
+    // Header
+    data->mark(COOLIX_HEADER_MARK);
+    data->space(COOLIX_HEADER_SPACE);
+    // Data
+    //   Break data into byte segments, starting at the Most Significant
+    //   Byte. Each byte then being sent normal, then followed inverted.
+    for (uint16_t i = 8; i <= COOLIX_BITS; i += 8) {
+      // Grab a bytes worth of data.
+      uint8_t segment = (remote_state >> (COOLIX_BITS - i)) & 0xFF;
+      // Normal
+      for (uint64_t mask = 1ULL << 7; mask; mask >>= 1) {
+        data->mark(COOLIX_BIT_MARK);
+        data->space((segment & mask) ? COOLIX_ONE_SPACE : COOLIX_ZERO_SPACE);
+      }
+      // Inverted
+      for (uint64_t mask = 1ULL << 7; mask; mask >>= 1) {
+        data->mark(COOLIX_BIT_MARK);
+        data->space(!(segment & mask) ? COOLIX_ONE_SPACE : COOLIX_ZERO_SPACE);
+      }
+    }
+    // Footer
+    data->mark(COOLIX_BIT_MARK);
+    data->space(COOLIX_MIN_GAP);  // Pause before repeating
+  }
+
+  transmit.perform();
+}
+
+}  // namespace coolix
+}  // namespace esphome
diff --git a/esphome/components/coolix/coolix.h b/esphome/components/coolix/coolix.h
new file mode 100644
index 0000000000..0d52018d2a
--- /dev/null
+++ b/esphome/components/coolix/coolix.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "esphome/components/climate/climate.h"
+#include "esphome/components/remote_base/remote_base.h"
+#include "esphome/components/remote_transmitter/remote_transmitter.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome {
+namespace coolix {
+
+class CoolixClimate : public climate::Climate, public Component {
+ public:
+  void setup() override;
+  void set_transmitter(remote_transmitter::RemoteTransmitterComponent *transmitter) {
+    this->transmitter_ = transmitter;
+  }
+  void set_supports_cool(bool supports_cool) { this->supports_cool_ = supports_cool; }
+  void set_supports_heat(bool supports_heat) { this->supports_heat_ = supports_heat; }
+  void set_sensor(sensor::Sensor *sensor) { this->sensor_ = sensor; }
+
+ protected:
+  /// Override control to change settings of the climate device.
+  void control(const climate::ClimateCall &call) override;
+  /// Return the traits of this controller.
+  climate::ClimateTraits traits() override;
+
+  /// Transmit via IR the state of this climate controller.
+  void transmit_state_();
+
+  bool supports_cool_{true};
+  bool supports_heat_{true};
+
+  remote_transmitter::RemoteTransmitterComponent *transmitter_;
+  sensor::Sensor *sensor_{nullptr};
+};
+
+}  // namespace coolix
+}  // namespace esphome
diff --git a/tests/test1.yaml b/tests/test1.yaml
index ba8abc3ead..8ff29d8c5b 100644
--- a/tests/test1.yaml
+++ b/tests/test1.yaml
@@ -903,6 +903,13 @@ climate:
     sensor: my_sensor
   - platform: tcl112
     name: TCL112 Climate
+  - platform: coolix
+    name: Coolix Climate With Sensor
+    supports_heat: True
+    supports_cool: True
+    sensor: my_sensor
+  - platform: coolix
+    name: Coolix Climate
 
 switch:
   - platform: gpio