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  • Q How many watts is a dehumidifier?

    The power consumption of a dehumidifier can vary widely depending on its capacity, features, and the manufacturer's design. Generally, residential dehumidifiers can range from about 300 watts for smaller units to 1,000 watts or more for larger, higher-capacity models.
  • Q What should the temperature be on a dehumidifier?

    The operating temperature of a dehumidifier can vary depending on the specific model and type, but most standard refrigerant-based dehumidifiers are designed to operate effectively in temperatures ranging from approximately 41°F (5°C) to 95°F (35°C).
  • Q How does a dehumidifier humidistat work?

    A humidistat in a dehumidifier is a sensor that measures the relative humidity (RH) level in the air. It works in conjunction with the dehumidifier's control system to maintain a desired humidity level set by the user. Here's how it works:
    Sensing Humidity Levels
    User-Set Humidity Level
    Comparison and Control
    Cycling On and Off
    Maintaining Constant Humidity

    The efficiency and effectiveness of the dehumidifier's humidistat depend on factors like the accuracy of the sensor, the responsiveness of the control system, and the overall performance of the dehumidifier. It's important to choose a quality dehumidifier with a reliable humidistat for effective humidity control in your environment.
  • Q What features to look for in a dehumidifier?

    When selecting a dehumidifier, it's important to consider several features to ensure it meets your specific needs. Here are some key features to look for:
    Capacity: Determine the size of the area you need to dehumidify.
    Humidistat: This feature allows you to set and control the desired humidity level.
    Auto-Defrost: This feature is especially important if you plan to use the dehumidifier in a colder environment.
    Continuous Drainage Option: This is useful if you want the unit to run without needing to empty a water tank regularly.
    Portability and Wheels: Easy for users to move the dehumidifier around.
    Filter Indicator Light: Alerts you when it's time to clean or replace the filter.
    Noise Level: If noise is a concern, look for models with lower decibel ratings. Quiet operation may be particularly important if the dehumidifier will be used in a bedroom or living area.
    Energy Efficiency: Save you money on your energy bills in the long run.
    Timer and Delay Start: Allow you to set specific times for the dehumidifier to operate.
    Auto-Restart: Ensures that the dehumidifier resumes operation at your preset settings once power is restored.
    Built-In Pump: It allows for more flexible drainage options.
    Digital Display and Controls: Make it easier to monitor and adjust settings.
    Air Filtration: Help improve air quality by capturing dust, allergens, and other particles.
    Warranty: Preair’s 15-month warranty period can provide extra peace of mind.
  • Q Should dehumidifiers make noise?

    Yes, it is normal for dehumidifiers to make some level of noise during operation. This noise is primarily generated by the fan and the compressor components of the dehumidifier.
    While some noise is to be expected, excessively loud or unusual noises can indicate a problem with the dehumidifier and may require attention or maintenance. If you notice any sudden changes in the noise level, it's a good idea to check the unit for any loose components, debris, or signs of wear and tear. 
  • Q Do dehumidifiers lose efficiency over time?

    Yes, dehumidifiers can lose efficiency over time due to several factors:
    Dust and Dirt Buildup
    Refrigerant Leakage
    Wear and Tear
    Clogged Filters
    Humidity Levels
     (used in extremely high humidity conditions for extended periods)
    Lack of Maintenance
    Environmental Conditions
     (in extreme temperatures or in conditions outside of its recommended range)
  • Q What size dehumidifier do I need?

    Preair provides high efficient LGR dehumidifiers for professionals to cope with water damage, fire damage, mold growth, air purification, etc. Take the LGR dehumidifiers for example, you can choose a dehumidifier with a specific dehumidification capacity according to the size of a space that you want to dehumidify. There are other factories that you need to take into consideration, such as, the current RH level, the desired RH level, ventilation conditions, budget.
    No. LGR85 LGR105 LGR125 LGR155 LGR165L
    Dehumidification Capacity
    (26.7 ℃/60% RH)
    85 PPD 105 PPD 125PPD 155PPD 165PPD
    Size For 1,000 - 2,000
    square feet
    1,000 - 2,500
    square feet
    2,500 - 4,000
    square feet
    3,000 - 6,000
    square feet
    3,500 -7,000
    square feet

  • Q How much does a whole home dehumidifier cost?

    Preair provides high quality whole home dehumidifiers at a ex-factory price. The specific price you can find at our online shop on Alibaba.
  • Q Do dehumidifiers work in low humidity?

    Dehumidifiers are effective in environments with high humidity and can be crucial for controlling mold growth and preventing other moisture-related issues. 
    If you want to use a dehumidifier in a low-humidity area, it is recommended to measure the RH level of the area repeatedly and choose a dehumidifier that can still work in a relatively low humidity condition. The WH, ZETA and CFZ series of dehumidifiers can work between the 10%-90% RH. Want to buy efficient and powerful dehumidifiers? Contact Preair first.

    Dehumidifier Model LGR PR HD WH ZETA PRO CFZ
    Functioning Temperature Range 5℃-38℃ 5℃-38℃ 5℃-40℃ 5℃-35℃ 5℃-38℃ 5℃-35℃ 5℃-38℃
    Functioning Humidity Range 20%-90%RH 30%-90%RH 20%-90%RH 10%-90%RH 10%-90%RH 20%-85%RH 10%-90%RH

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