What is CARRIER Heat mode

Carrier Heat mode refers to the heating function of a Carrier heat pump system. Heat pumps are versatile heating and cooling systems that move heat from one place to another, providing both cooling and heating functions. In heating mode, heat pumps extract heat energy from outside air and transfer it inside the home, even in extremely cold temperatures. This is made possible by a reversing valve in the outdoor unit that allows the system to switch between heating and cooling modes.

Understanding Carrier Heat Pump Systems

Carrier heat pumps are designed to provide efficient and reliable heating and cooling for residential and light commercial applications. These systems utilize advanced technology to extract heat from the outside air and transfer it indoors, even in cold weather conditions.

Heating Seasonal Performance Factor (HSPF2)

Heat pumps are rated by their Heating Seasonal Performance Factor (HSPF2), which is a measure of a heat pump’s overall energy efficiency during the heating season. The HSPF2 rating takes into account the heat pump’s performance across a range of outdoor temperatures and operating conditions. The higher the HSPF2 rating, the more energy-efficient the system.

Carrier offers a wide selection of heat pumps or heat pump systems to suit various homes and budgets, with options available from the Infinity, Performance, and Comfort series. Each series is designed to provide different levels of efficiency, comfort, and features to meet the specific needs of the homeowner.

Proper Thermostat Settings for Carrier Heat Mode

What is CARRIER  Heat mode

When using the heat mode, it is essential to ensure that the thermostat settings are correct. If the thermostat is set to cool or on constant fan, the heat pump will blow cool or cold air, which is not the desired outcome. Additionally, if the temperature setting on the thermostat is off by a few degrees, it may not be properly calibrated, leading to incorrect temperature readings.

To ensure the heat pump is operating in the correct mode, follow these steps:

  1. Locate the thermostat and ensure it is set to the “Heat” or “Auto” mode.
  2. Check the temperature setting on the thermostat and adjust it to the desired temperature.
  3. Verify that the thermostat is displaying the current indoor temperature accurately.
  4. If the thermostat is not functioning correctly, consider replacing the batteries or contacting a professional HVAC technician for further assistance.

Troubleshooting Carrier Heat Pump Issues

In some cases, the heat pump may not be heating due to various issues. These can include:

  1. Tripped Circuit Breaker: Check the circuit breaker for the outdoor unit and ensure it has not been tripped. If it has, reset the breaker and observe if the system resumes heating.
  2. Tripped Outdoor Unit Power Disconnect: Locate the outdoor unit power disconnect switch and ensure it is in the “On” position.
  3. Blown Fuse: Inspect the fuse in the outdoor unit’s power disconnect box and replace it if necessary.
  4. Indoor Unit Power Switch: Ensure the indoor unit power switch is in the “On” position.
  5. Dirty Air Filters: Dirty air filters can restrict airflow, affecting the system’s performance. Clean or replace the air filters as recommended.
  6. Leaking Ducts: Leaks in the ductwork can reduce airflow and impact the heat pump’s ability to effectively heat the home.

If troubleshooting does not resolve the issue, it is recommended to contact a local Carrier HVAC dealer for professional assistance. Regular maintenance and timely repairs can help ensure the longevity and efficiency of the heat pump system.

Advanced Carrier Heat Pump Features

Carrier heat pumps often come equipped with advanced features that can enhance the heating performance and efficiency of the system. Some of these features include:

  1. Dual-Fuel Capability: Certain Carrier heat pumps can be paired with a gas or oil furnace, allowing the system to automatically switch between the heat pump and the furnace to optimize energy efficiency based on outdoor temperatures.
  2. Variable-Speed Compressors: Advanced heat pumps may feature variable-speed compressors that can adjust their output to match the heating or cooling demand, resulting in improved efficiency and comfort.
  3. Inverter Technology: Carrier’s Infinity series heat pumps utilize inverter technology, which allows the compressor to operate at variable speeds, further enhancing energy efficiency and comfort.
  4. Quiet Operation: Carrier heat pumps are designed with advanced sound-dampening features to provide quiet operation, ensuring a peaceful indoor environment.
  5. Wi-Fi Connectivity: Some Carrier heat pumps can be integrated with smart home systems and controlled remotely via a mobile app or voice commands, providing added convenience and control.


Carrier Heat mode is a crucial function of Carrier heat pump systems, allowing homeowners to efficiently heat their homes even in cold weather conditions. By understanding the key features, proper thermostat settings, and troubleshooting techniques, homeowners can ensure their Carrier heat pump system operates at its best, providing reliable and energy-efficient heating throughout the year.


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