About the problem of air conditioning heating? 7 even ask you to find the answer

In winter, when the cold wind blows, keeping warm has become a major concern for many. While most people are familiar with using air conditioners for cooling in summer, not everyone knows that they also have a heating function. However, there are often questions about how effective this heating is and why certain issues occur. Today, we’ll take a closer look at seven common concerns regarding air conditioner heating and provide some helpful insights. **1. Why does the heating performance get worse when it gets colder?** A: The reason lies in the way air conditioners work during heating. When the outdoor temperature drops, it becomes harder for the unit to absorb heat from the outside air. This makes the heating process less efficient, leading to a weaker warming effect. **2. Why is it better to use other heating devices below -5°C?** A: Air conditioners rely on heat exchange between the indoor and outdoor units. When the temperature falls below -5°C, the difference in temperature between the outdoor air and the condenser becomes too small, making it nearly impossible for the system to transfer heat effectively. In such cases, it's best to use an auxiliary electric heater or another heating device for better performance. **3. How can you tell if your air conditioner is heating properly?** A: A standard way to check is by measuring the temperature difference between the inlet and outlet of the indoor unit after running for 15–20 minutes. For a heat pump type, the difference should be at least 15°C, while for an electric auxiliary heater, it should be at least 23°C. **4. Why doesn’t the air temperature from the outlet indicate whether the unit is working?** A: The temperature of the air coming out of the unit isn’t the main indicator of its performance. Instead, the key factor is the temperature difference between the incoming and outgoing air. As long as this difference meets the required standards, the unit is functioning correctly. **5. Why does the room temperature rise slowly even when the air conditioner is on?** A: This happens because as the indoor temperature increases, the temperature difference between inside and outside also grows. This causes more heat to escape, slowing down the warming process. Eventually, the heat generated by the unit is balanced by the heat lost, and the temperature stabilizes. **6. Why doesn’t the indoor unit blow air when heating, but the outdoor unit runs?** A: During heating, the roles of the indoor and outdoor units switch. The outdoor unit acts as the evaporator, absorbing heat from the outside. This can lead to frost forming on the fins due to low temperatures. The unit must defrost before it can continue operating efficiently. **7. Why does it take time for the heat to start blowing after turning on the heater?** A: This is due to the anti-cold wind feature designed into the unit. When heating begins, the system first warms up to avoid blowing cold air immediately. It usually takes 3–5 minutes before hot air starts flowing, depending on the outdoor temperature. After going through these questions and answers, we hope you now have a clearer understanding of how air conditioners work during heating. With this knowledge, you can make better use of your home appliances and enjoy a more comfortable living environment throughout the winter.

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