During the rainy season, air dehumidifiers have become the saviors for many households. But do you know that nearly one-third of 

the products on the market have falsely labeled parameters?

As the humid season approaches, air dehumidifiers have become essential appliances for many families. However, with a wide variety 

of products and numerous promotional tactics in the market, consumers may easily fall into marketing traps if they are not careful.

A survey shows that many air dehumidifiers have issues of falsely labeled parameters and exaggerated performance, resulting in actual 

usage effects far inferior to what is advertised. These hidden truths behind the glamorous advertisements are precisely the secrets that 

sellers will not voluntarily disclose. 

01 Indicated parameters, clarify the truth of dehumidification capacity

Dehumidification capacity is the core indicator for evaluating the performance of dehumidifiers, but it is also the area where merchants 

are most likely to engage in deception. According to the tests conducted by the Hong Kong Consumer Council, the daily dehumidification 

capacity of 5 models of dehumidifiers was slightly lower than the advertised values, with deviations ranging from 0.5% to 6.8%.

The common advertisements such as "daily dehumidification capacity of 30L" in the market are seriously misleading. According to national 

standards, consumers should focus on the "nominal dehumidification capacity", which is the hourly dehumidification capacity tested under 

a temperature of 27℃ and a relative humidity of 60%, and the unit is kg/h.

Merchants often use "daily dehumidification capacity" to attract attention, but this data is usually measured under high humidity and high 

temperature conditions of 30℃ and 80% humidity, which is quite different from our daily home environment.

When consumers make a purchase, they should take the nominal dehumidification capacity as the main reference, as it can better reflect 

the actual performance of the product in a normal home environment. 

02 Confusing Concepts, Unveiling the Secrets of Performance Parameters

There are multiple performance parameters for dehumidifiers, and merchants often exploit consumers' lack of understanding of these 

professional terms to confuse concepts for marketing purposes.

Nominal dehumidification capacity and daily dehumidification capacity are two different testing standards. The nominal dehumidification 

capacity (26-hour condition) is the result of testing under a temperature of 27℃ and a humidity of 60%, while the daily dehumidification 

capacity (38-hour condition) is the result of testing under a temperature of 30℃ and a humidity of 80%.

Some merchants deliberately exaggerate the daily dehumidification capacity for promotion while hiding the nominal dehumidification capacity 

in an inconspicuous technical parameter table.

When consumers compare different products, they must uniformly compare based on the standards. They should either look at the nominal 

dehumidification capacity or the daily dehumidification capacity, and it is best to take the nominal dehumidification capacity as the main 

reference, as it is closer to the actual usage environment. 

03 Performance Stability, The Neglected Core Indicator

The performance stability of dehumidifiers is a key factor influencing the user experience, but this indicator is often overlooked by consumers 

and not emphasized by merchants either.

Performance stability reflects the consistency of a dehumidifier's performance over a long period of use. Some products initially have good 

dehumidification effects, but their performance will significantly decline after a few months of use.

High-performance dehumidifiers often use double the amount of dehumidification materials, such as equipped with dual-channel high-end 

compressors, composite high-density evaporators and condensers and other core components, to ensure long-term stable performance.

When consumers are making a purchase, they can pay attention to whether the product has passed the "10-year performance attenuation 

resistance certification", which is an important reference for measuring the durability and performance stability of the product. 

04 Core Components, Hidden Secrets Within

The core components of an dehumidifier directly affect its performance and lifespan. However, these components hidden inside the machine 

are often not easily understood by ordinary consumers.

The compressor is the heart of a dehumidifier, similar to the engine of a car. High-quality dehumidifiers usually use compressors from first-line 

brands, such as Meizhi and Panasonic, and are professionally tuned.

The weight of a dehumidifier can also indirectly reflect the quality of the materials used. Some brands, in an attempt to cut costs, may skimp 

on the internal components, resulting in a product that is too light and affecting its performance and lifespan.

When consumers make a purchase, they should pay attention to the brand and model of the compressor used in the product, and can also 

compare the weight of products of the same specification as a reference for judging the quality of the materials. 

05 Additional Features, Glitzy but Useless Promotional Tricks

Modern dehumidifiers often come with various flashy features, ranging from negative ion purification to smart APP control. However, whether 

these features are practical is a topic that merchants are reluctant to discuss much.

Many brands tend to overemphasize the additional features while neglecting the core dehumidification performance. For instance, they vigorously 

promote the negative ion purification feature, but downplay the dehumidification capacity and stability.

Some so-called "high-tech" features are rarely used in practice, but consumers still have to pay a high price for them. Instead of pursuing flashy 

but useless features, it is better to focus on the core dehumidification performance of the product.

The truly notable practical features include: automatic constant humidity, water full stop, low noise design, mold prevention technology, etc. 

These can truly enhance the user experience.

When choosing a dehumidifier, remember a principle: Core performance trumps flashy appearance. As an industry insider pointed out, "High-quality 

dehumidification equipment is not a cost expenditure, but a productivity tool that can create benefits in a dry environment."

To determine whether a dehumidifier is worth purchasing, not only should you look at the parameters, but also its technical strength and solid 

materials. After all, truly good products are those that consistently perform stably in daily use, rather than merely being glamorous in advertisements.