The air filter of the fan coil unit is used to purify and filter the outdoor fresh air or return air. After a period of use, a lot of dust will accumulate on the surface of the air filter, which will increase the air resistance through the fan coil unit and affect the unit replacement. Thermal efficiency makes the unit unable to meet the temperature, humidity and hygienic requirements of the air in the room. According to the environment and usage, the air filter should be cleaned and replaced regularly.
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