Taiwan’s subtropical climate means relative humidity regularly exceeds 80% for much of the year, especially from February to June during the plum rain season (梅雨季) and again in summer when typhoons arrive. In Taipei, average humidity hovers around 75-80% year-round, while coastal and mountainous areas can see even higher levels. This persistent dampness promotes mould growth, damages wooden furniture, corrodes electronics, and can aggravate respiratory conditions. A dehumidifier is not a luxury in Taiwan, it is a necessity for maintaining a healthy and comfortable home.
This guide explains what to look for when buying a dehumidifier in Taiwan, from capacity and energy efficiency to features and where to shop. Whether you are renting a small apartment or own a larger home, the right machine will keep your indoor environment dry and your belongings safe. For more context on setting up your home in Taiwan, see our complete guide to starting a home in Taiwan.
Understanding Taiwan’s Humidity Problem
Relative humidity in Taiwan’s major cities, Taipei, Taichung, Kaohsiung, and Tainan, frequently exceeds 80% indoors during the wet season. In Taipei, average humidity in June is 77%, while in Keelung it can reach 85%. Without mechanical dehumidification, indoor humidity levels can stay above 70% for weeks at a time. Mould spores begin to grow at humidity levels above 60%, and dust mites thrive at 70-80%. This is why many Taiwanese households run dehumidifiers for several hours each day, especially in bedrooms, living rooms, and closets.
High humidity also affects building materials. Concrete walls can absorb moisture, leading to efflorescence (white salt deposits) and peeling paint. Wooden floors may warp, and metal fixtures can rust. Electronics, including computers, televisions, and audio equipment, are susceptible to internal corrosion when stored in damp environments. For renters, it is especially important to keep humidity in check to avoid disputes over damage deposits. Our first-time rental checklist includes tips for inspecting a property’s moisture issues before signing a lease.
Key Factors to Consider When Buying a Dehumidifier
Dehumidification Capacity (L/day)
Capacity is measured in litres per day (L/day) at standard conditions (30°C, 80% RH). In Taiwan, most manufacturers also list capacity at 27°C and 60% RH, which is closer to typical indoor conditions. A general rule is:
- Small rooms (up to 8 ping / ~26 m²): 6-8 L/day (27°C, 60% RH) is sufficient. Examples: Panasonic F-Y16EN, Mitsubishi MJ-E16VX.
- Medium rooms (8-15 ping / ~26-50 m²): 10-12 L/day. Examples: Hitachi RD-20FG, Sharp DW-D12A-W.
- Large rooms (15-25 ping / ~50-83 m²): 14-18 L/day. Examples: Mitsubishi MJ-E140VX, Panasonic F-Y32GX.
- Whole-house or open-plan areas (over 25 ping): 20 L/day or more, or multiple units.
Note that ping (坪) is the standard unit for floor area in Taiwan; 1 ping equals about 3.3 m². Many dehumidifier product pages on Taiwanese e-commerce sites like PChome 24h and Shopee list the recommended room size in ping.
Energy Efficiency and the Energy Factor (EF)
Dehumidifiers run for many hours, so energy efficiency matters. Taiwan’s Bureau of Energy (能源局) mandates an energy efficiency label (能源效率標示) with a rating from 1 to 5, where 1 is the most efficient. Look for a 1st-grade (一級) label. The Energy Factor (EF) is measured in L/kWh, the higher the number, the more moisture removed per unit of electricity. For example, the Panasonic F-Y16EN has an EF of 2.68 L/kWh, while the Mitsubishi MJ-E16VX achieves 2.80 L/kWh. Over a year of daily use, a difference of 0.1 L/kWh can save several hundred NT dollars in electricity.
Inverter technology, now common in air conditioners, is also appearing in dehumidifiers. Inverter models adjust compressor speed to maintain a set humidity level, using less power than on/off models. Brands like Panasonic (with their “nanoe” technology) and Hitachi offer inverter dehumidifiers, but they cost 30-50% more upfront. For most users, a non-inverter model with a 1st-grade label is cost-effective.
Water Tank Capacity and Drainage Options
Water tanks range from 2.5 L to 5.5 L. A larger tank means fewer trips to empty it, but also a heavier unit. In Taiwan’s humid weather, a 10 L/day machine may fill a 3 L tank in 6-8 hours. If you plan to run the dehumidifier overnight, a tank of at least 4 L is recommended. Many models include a continuous drainage port that connects to a garden hose or a floor drain. This is useful if you have a laundry room or a bathroom with a drain. For apartments without floor drains, you can run the hose into a sink or a larger bucket. Check that the hose fitting is standard (usually 12-15 mm diameter).
Noise Level
Noise is measured in decibels (dB). A dehumidifier running in a bedroom should be under 40 dB on low fan speed. Most mid-range models are rated 38-42 dB on low and 46-52 dB on high. For example, the Sharp DW-D12A-W is rated at 38 dB (low) and 48 dB (high). If you are sensitive to noise, consider models with a “quiet” or “sleep” mode. Keep in mind that larger capacity units tend to be louder because of bigger compressors and fans.
Features to Look For
Humidistat and Auto Mode
A built-in humidistat allows the dehumidifier to maintain a set relative humidity level, typically between 40% and 70%. The ideal indoor humidity for comfort and health is 50-60%. Auto mode lets the machine run until the target is reached, then cycles on and off to maintain it. This saves energy compared to running continuously. Most major brands, Panasonic, Mitsubishi, Hitachi, Sharp, and Daikin, include this feature in models priced above NT$8,000.
Air Purification and Ioniser
Many dehumidifiers also function as air purifiers, with HEPA or electrostatic filters that capture dust, pollen, and mould spores. Panasonic’s “nanoe” technology releases hydroxyl radicals to suppress bacteria and viruses. Sharp’s “Plasma Cluster” ioniser works similarly. While these features add cost, they can be beneficial for allergy sufferers. However, if your primary need is dehumidification, a dedicated dehumidifier without air purification will be more efficient and cheaper. For comprehensive air quality management, see our article on the best air conditioner for Taiwan in 2025, which also covers air purification features in split-type units.
Laundry Drying Mode
In Taiwan, many homes lack dedicated laundry drying rooms, and outdoor drying is impossible during the rainy season. A dehumidifier with a laundry drying mode directs airflow upward and runs continuously for a set time (usually 3-6 hours) to dry clothes on a rack. This is a very popular feature. Models like the Panasonic F-Y20GX and Mitsubishi MJ-E140VX have dedicated laundry modes with oscillating louvers. If you plan to use your dehumidifier for drying clothes, choose one with a laundry mode and a tank capacity of at least 4 L to avoid frequent emptying.
Castors and Portability
Most floor-standing dehumidifiers weigh 12-18 kg. Castors (wheels) make it easy to move the unit between rooms. Look for models with four swivel castors for better manoeuvrability. Some units have a built-in handle or recessed grip. If you need to move the dehumidifier up and down stairs frequently, consider a lighter model (under 14 kg).
Where to Buy Dehumidifiers in Taiwan
Dehumidifiers are widely available in Taiwan at electronics chains, hypermarkets, and online stores. Major retailers include:
- PChome 24h (pchome.com.tw): The largest online electronics retailer in Taiwan. Offers next-day delivery in Taipei and New Taipei City. Prices are competitive, and product pages include detailed specifications and customer reviews. Often runs promotions during the plum rain season (May, June).
- Shopee (shopee.tw): A marketplace with many sellers. Prices can be lower than PChome, but shipping times vary. Look for “Shopee Mall” listings for authorised dealers. Beware of counterfeit or imported models that may not comply with Taiwan’s electrical safety standards (BSMI certification).
- RT-Mart (大潤發) and Carrefour (家樂福): Hypermarkets that stock dehumidifiers year-round, with larger selections during the wet season. You can see the unit in person and check noise levels.
- Tsann Kuenn (燦坤) and Synnex (全國電子): Electronics chains with physical stores across Taiwan. Staff can provide advice, and you can often test the controls. Prices are usually the same as online, but you may get free delivery or extended warranty.
- Costco (好市多): Offers a limited selection but often at good prices. Costco’s return policy (90 days for electronics) is generous. Look for the Mitsubishi MJ-E16VX or the Whirlpool WDH70HEAW.
When buying online, always check that the product has BSMI certification (經濟部標準檢驗局認證). This ensures the unit meets Taiwan’s safety and electromagnetic compatibility standards. Uncertified imports may not be covered by warranty and could be dangerous.
Top Dehumidifier Models for Taiwan (2025)
Based on sales data from PChome and Shopee, and reviews from local consumer groups, the following models are widely recommended for Taiwan’s conditions:
- Panasonic F-Y16EN (6 L/day, 1st-grade): Compact, quiet (38 dB low), with nanoe air purification. Suitable for bedrooms and small living rooms. Price: NT$8,500-9,500.
- Mitsubishi MJ-E16VX (6 L/day, 1st-grade): Known for reliability and high EF (2.80 L/kWh). Has a laundry drying mode and a 4.7 L tank. Price: NT$10,000-11,500.
- Hitachi RD-20FG (10 L/day, 1st-grade): Inverter model with a large 5.5 L tank. Quiet operation (39 dB low). Excellent for medium rooms. Price: NT$13,000-15,000.
- Sharp DW-D12A-W (12 L/day, 1st-grade): Plasma Cluster ioniser, 4.5 L tank, and a laundry mode. Good value for the capacity. Price: NT$9,000-10,500.
- Panasonic F-Y32GX (18 L/day, 1st-grade): Inverter model with wide-area nanoe. Suitable for large living rooms or open-plan apartments. Price: NT$18,000-21,000.
- Daikin DKM70 (7 L/day, 1st-grade): Streamer discharge technology for air purification. Compact design. Price: NT$9,000-10,000.
Prices are approximate and vary by retailer and promotion. Always compare across at least two platforms before buying.
Dehumidifier Placement and Maintenance Tips
Where to Place the Dehumidifier
For best results, place the dehumidifier in the centre of the room, away from walls and furniture. Allow at least 30 cm of clearance on all sides for air intake and exhaust. Do not place it directly against a wall, as this blocks airflow and reduces efficiency. In a bedroom, position it near the wardrobe or closet, where moisture tends to accumulate. If you use it for laundry drying, place it under or beside the drying rack. Avoid placing the unit in direct sunlight or near heat sources like radiators (rare in Taiwan) or ovens.
Cleaning and Filter Maintenance
Most dehumidifiers have a washable pre-filter that should be cleaned every two weeks during heavy use. A clogged filter reduces airflow and forces the compressor to work harder, increasing energy consumption. To clean, remove the filter and rinse it under running water, then let it dry completely before reinserting. Some models have a HEPA filter that needs replacement every 6-12 months; replacement filters cost NT$300-800. Check the manual for your specific model.
The water tank should be washed with mild soap and water every month to prevent mould and bacterial growth. If you use continuous drainage, flush the hose with diluted bleach (1:10) every few months to keep it clear.
Operating Costs
Electricity costs for a dehumidifier depend on capacity, efficiency, and usage. Taiwan’s residential electricity rate (2025) is about NT$2.5-3.5 per kWh, depending on the tier. A 6 L/day model with a power consumption of 200 W running 8 hours per day uses 1.6 kWh, costing about NT$4-5.6 per day, or NT$120-170 per month. A larger 18 L/day model consuming 400 W would cost about NT$8-11 per day. During the wet season (February to June), running a dehumidifier 8-12 hours per day is typical. Many households run them overnight in bedrooms, which adds to electricity bills but improves sleep quality and protects belongings.
For those living in small apartments, managing space is a priority. Our article on small apartment layout ideas offers suggestions for integrating appliances like dehumidifiers without cluttering your living area.
Dehumidifiers vs. Air Conditioners for Humidity Control
Many people wonder if their air conditioner’s “dry mode” (除濕模式) can replace a dedicated dehumidifier. While air conditioners do remove moisture, they are less efficient at it because they are designed primarily for cooling. A typical split-type air conditioner in dry mode consumes 700-1,200 W and removes about 1-2 L of water per hour, but it also cools the room, which may be uncomfortable in mild weather. In contrast, a dedicated dehumidifier consumes 200-400 W and removes 0.5-1.5 L per hour, depending on conditions. For year-round humidity control, a dehumidifier is more energy-efficient and does not lower the room temperature significantly. However, during hot and humid summer months, running the air conditioner in cooling mode will also reduce humidity, but it is not a substitute for a dehumidifier in the wet season. For a detailed comparison, see our guide on the best air conditioner for Taiwan in 2025.
Special Considerations for Renters and Homeowners
If you are renting a furnished apartment, check whether the landlord provides a dehumidifier. Some landlords in Taipei and New Taipei City include one as standard equipment, especially in basement or ground-floor units. If not, buying a small, portable model (6-8 L/day) is a worthwhile investment. When moving out, you can take it with you, it is not a fixture. Our first-time rental checklist includes a section on checking for dampness and mould before signing a lease.
Homeowners planning a renovation should consider installing a whole-house dehumidifier integrated with the HVAC system. These systems are more expensive (NT$40,000-80,000 installed) but provide centralised control and are more discreet. Companies like Daikin and Panasonic offer whole-house solutions in Taiwan. For those buying a home, our article on buying a home in Taiwan costs covers budgeting for such improvements.
If you are moving to a new home, it is wise to run a dehumidifier for the first few days to dry out any moisture from construction or moving. Our moving house Taiwan step-by-step guide includes tips on preparing your new home for occupancy.
Conclusion
Taiwan’s humidity is a fact of life, but with the right dehumidifier, you can keep your home dry, comfortable, and healthy. Focus on capacity (L/day), energy efficiency (1st-grade label), tank size, and noise level. Consider additional features like laundry drying mode and air purification if they match your needs. Buy from reputable retailers and always check for BSMI certification. With proper placement and regular maintenance, a good dehumidifier will last 5-8 years and pay for itself in protected belongings and improved well-being.
For more advice on setting up your home in Taiwan, explore our other guides. And if you are looking for space-saving solutions to accommodate a dehumidifier in a compact home, see our article on space-saving furniture in Taiwan.