Warm air curtains can assist in regulating indoor temperatures.

The Warm Air Curtains are installed above the entrances of shopping malls, theaters, hotels, restaurants, conference halls, cold storage facilities, operating rooms, and homes, among other places. Once activated, they effectively separate the indoor and outdoor air, providing both convenience and preventing the exchange of indoor-outdoor cold and warm air. Additionally, they offer dust, pollution, and insect prevention. Widely used in industries such as electronics, instruments, pharmaceuticals, food, precision processing, chemicals, footwear, and services, as well as commerce.

High-speed airflow generated by the warm air curtain divides the indoor space into two separate temperature zones, creating a comfortable indoor environment. It maintains the air conditioning and purification functions, conserving electricity while facilitating air circulation, effectively blocking dust, smoke, odors, and insects. The air door, which continues to save electricity by preventing the escape of cold (or warm) air, divides the interior and exterior into two independent temperature zones. It assists in temperature regulation during prolonged air conditioner operation, achieving the goal of energy conservation and environmental improvement.

The dust and insect-proof air curtain machines generate high-speed air flow, forming a barrier door that effectively blocks outdoor dust and flying insects from entering, maintaining indoor cleanliness. The smoke and harmful gas-proof air curtain machine's air circulation system prevents the spread of smoke, pungent odors, and industrial emissions, as well as car exhausts, from entering the indoor space. The air circulation function of the air curtain machine ensures indoor temperature equilibrium in large spaces like gymnasiums and cinemas where air conditioning energy distribution is uneven.

Current hot air curtain manufacturers' models typically start with "FM" for natural air curtains. Various brands' natural air curtain models such as FM1209 or FM1509 are available nationwide, with "FM" standing for "air curtain." The numbers "12" and "15" indicate the diameter of the fan (larger diameters mean greater air volume; there's also an older model with a 09 diameter, generally used at heights of 1.8-2.5 meters. The height required for installing the curtain machine is also higher. The small "12" or "12.5" setting on the 09 model is equivalent to the normal wind force of the 09, so the 09 model is gradually being phased out. The two numbers also denote the length of the air curtain (e.g., 09 indicates a 0.9-meter length, 12 indicates a 1.2-meter length). In contrast, hot air curtains or water-hot air curtains usually start with "RM."

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