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Few people know about such a device as a hygrometer. And, of course, not everyone knows the benefits that it can bring. First of all, it is health, which depends on living conditions and comfortable microclimate. These are not only temperature and air pollution indicators, but also humidity parameters. Deviations from the optimal values can lead to serious diseases. This is the main reason why every house or apartment should have the best hygrometer, which will create ideal living conditions for all family members.
Manufacturers have released a variety of hygrometer models, both in function and cost. You can buy a completely budget device, or choose a digital unit with additional features. After reading our 7 hygrometer reviews of the most popular models you will know, which one to choose.
The term hygrometer can be applied to devices of various designs, measuring the humidity in a room or outdoors. Today, digital hygrometer can measure the temperature outside the window (using a remote sensor), inside the room, as well as the humidity inside. It is popular in both houses and apartments. The price of an indoor hygrometer is low, which makes it accessible to most people.
Modern thermo-hygrometer is additionally equipped with:
Air drying can be determined by its physical state, and waterlogging - by tactile sensations. With excessive humidity in the house, there will be discomfort when the sheets and blankets touch your body. If the humidity is insufficient, dryness in the nose and throat, frequent headaches, fatigue and a feeling of “sand” in the eyes may disturb you. If you have kids, then buying a hygrometer thermometer is a necessity. For a fragile children's organism, a lack of moisture is harder to love with. Frequent viral diseases in the family are also a reason to think about buying a digital hygrometer.
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The Temp Stick Wireless thermo-hygrometer is a smart device to help you keep track of the sensitive weather conditions like humidity and the current temperature. One of the coolest things you get from the Temp Stick is the remote control that will warn you when the temperatures skip a predetermined value. This hygrometer will supervise the weather conditions day and week, and inform you when its power is low. It sends data obtained and is compatible with PCs, Android and iOS.
Monitors temperature and humidity remotely Sends text and email alerts Connects directly to Wi-Fi network Accurately monitors conditions 24/7 Data logging with unlimited history
No temperature or humidity display on the sensor
The SensorPush Wireless Thermometer/Hygrometer is a smart device to easily monitor your temperature and humidity levels via your smartphone and the small and attractive sensor. It offers you an extremely high-end experience, allowing to use an app that has been specially designed to be straightforward and easy to use while maintaining high aesthetic appeal. With it, you will experience a streamlined and effective way to monitor your space's climate.
Pairs with your iOS or Android device; Sensors are compact and easy to set up; Keeps track of the climate in your home or office; 325-foot range
Caliber IV Digital Hygrometer has a large screen to display both humidity and temperature. Thanks to its ZX circuit technology, you will not have any problems with reading and you will be able to find in the device’s memory the records as too high and low humidity occurred. The design is slim and you can choose whether to use Fahrenheit or Celsius.
User Calibratable with an easy procedure 10 seconds of updating time Measures humidity and temperature Additional protection against humidity or temperature fluctuations.
No remote control
The AcuRite hygrometer will show you your inside atmosphere whether it’s your office, home, baby’s room, spa, warehouse or greenhouse. It is wireless using 2 AAA alkaline batteries. Information on the digital screen is accurately measuring the air humidity and temperature indoors. You can count on the professional accuracy with its manual calibration option that people like to have. The display shows you the lows and highs for the last 24 hours and for all time. The params are monitored every 10 seconds and you can put the unit on the tabletop, mount to the wall, or attach to metal using its magnet on the back.
Manual calibration option Low battery indicator Tabletop, wall or magnet-mountable design Limited one-year warranty
Less functionality for the price
Ambient Weather WS-04 has one external sensor for measuring the temperature outside and in the room. These compact gizmos can be hung in different places: they will show data on the temperature level inside and outside on the miniature display. This way, all family members will be able to find out about the weather, each in their own room. Developers write that the external sensor is protected from moisture. Two AAA batteries power all elements. The average signal transmission distance is 120 feet. If you have a large house or object, you can purchase several units. One remote control will “read data” from one transmitter on one side, and the second remote will be able to “read” from the second transmitter. This gadget was especially appreciated by motorists.
Can measure multiple temperatures and humidity levels indoors and outdoors An excellent choice for large homes with many rooms Audio and visual alarms to indicate when a temperature/humidity level has been reached Compact design
The signal does not pass through the ground and solid metal Cheap plastic and a display can easily be scratched
This is a very accurate hygrometer for cigar humidors with low deviance between units. The gauge reacts quickly to change humidity values. Cigar Oasis Caliber Hygrometer is the real digital hygrometer with a user calibration in a sleek round design. The hygrometer includes humidity and temperature reading, Fahrenheit/Celsius readings, three-day high/low and averages for humidity & temperature, all in a sleek gold trimming. According to the cigar hygrometer reviews, this device measures every 10 seconds.
Secure magnet mount Color LCD display Fahrenheit/ Celsius display Maximum and minimum recordings Brass finish
No remote control
Extech humidity alert meter can be used for temperature, humidity and dew point displaying. There is a pre-set alarm that will warn you if the humidity level is out of the norm. The meter can record the minimum and maximum levels of humidity and dew point. The device is also equipped with a sensor probe for measuring temperature and humidity in air-condition vents or other remote areas. This meter can be perfect for any use if you need to monitor the humidity level.
Able to measure readings in remote areas Simple to read and use High accuracy hygrometer ISO and national standards for product accuracy Very accurate With a sensor probe
No wireless sensors
Mankind has been able to measure humidity for more than two centuries. With the development of science and technology, new versions of best devices appeared. Today, all models can be divided into the following types.
Indoor hygrometer quickly measures the humidity in the room. Its basis is the measurement of the constantly changing resistance in the ambient air. The chloride-lithium electrolyte layer deposited on the plate is supplied with a low voltage from the batteries. This sensor’s electrical characteristics built into the console are constantly changing under the influence of moisture vapor in the air and fixed.
The psychrometer in Greek means “cold measurement”. It can be used to measure the temperature and humidity in the air. Its operational principle is based on changing the fluid’s physical properties. During this process, water evaporates. It loses energy, therefore, the temperature drops. Such a decrease is recorded with a wetted thermometer. Before using a psychrometer, you need to know that the evaporated liquid is near the psychrometer, so this affects its indications.
Its main difference from a hygrometer is in operational principle, whose work is based on changes in the physical and chemical properties of substances when air humidity fluctuates.
Inside the device, there is a metal mirror, which condenses moisture from the injected air under pressure. The device measures its weight and determines the level of humidity.
To measure the humidity in a room, many opt for analog hygrometers. It is easy to operate, its price is less than that of a hygrometer digital. However, its data may have an error. The simplest devices are not certified and do not pass verification in meteorological services. Therefore, in this case it is impossible to talk about the measurement accuracy. The location is important for mechanical research instruments. Most often, wall models are offered, which does not always fit into the interior.
These devices belong to the level of laboratory equipment. They have high measurement accuracy. Their operational principle is to change the electrolyte concentration deposited on the control plate.
Sensitive sensor is a capacitor of ceramics’ and polymers’ several layers. Typically, such devices are used to measure moisture in bulk building materials and substances. But some devices have the additional function of measuring relative humidity.
With such a device, relative humidity is determined within 30% … 100%. The operational principle is based on the properties of a non-fat human hair to change length, depending on the air humidity in the room. Modern devices often use polymer threads with the same properties.
This is one of the most accurate analog devices that determines the water vapor amount in the air in g / m3. The design consists of several U-shaped tubes filled with hygroscopic chemicals that absorb moisture from the air.
Today a large range of best measure humidity models is on the market. They all differ in appearance, function, purpose and, of course, in price. The cost of hygrometers that are similar at first glance may vary significantly. To buy too expensive and multifunctional units for home use is also not efficient, as well as saving on the digital hygrometer for the laboratory. So what are the parameters to choose and what to take into account?
Before acquiring the most accurate hygrometer, it is necessary to determine the conditions under which it will be used – its basic parameters depend on it. With the wrong choice, you can quickly bring the device into disrepair or steadily get erroneous indicators that do not allow you to create the desired comfort layer in the dwelling.
When choosing hygrometers, look for models with a temperature meter – this will allow you to find the dew point easily. If the device is designed for home or office, it is desirable to place it on a stand from a kit or on a wall so that it is always visible.
It is unlikely that the utilitarian look of a psychrometric meter will decorate the interior in a luxurious living room. Digital devices are offered in a wide range, so choosing the best option will not cause difficulties. Even relatively inexpensive products are capable of performing several useful functions. The room hygrometer displays the temperature besides the humidity level. Consideration should be given to the advantages of additional outdoor sensors. In practice, it may be useful to store measurement results in memory, or other additional features.
If you are a cigar lover, you need a humidor hygrometer to make sure you keep your cigars at the correct humidity. A cigar humidor is a storage box for smoking products. Its main task is to maintain an ideal microclimate, which is based on the optimal humidity of 68%-72%. They are made of wood, mainly Spanish cedar or walnut. These varieties are famous for their ability to absorb and release moisture, and also have no sharp smell, interrupting the tobacco aroma. But not all cigar humidors are equipped with the digital Cigar hygrometer, only the more expensive have them. That’s why you need to worry about buying an independent digital hygrometer. Be sure to choose the best device for a humidor that fits its size.
For owners of some musical instruments, it is very important to protect them from damage. That’s why it’s recommended to keep them in special instrument cases. But to store them properly, you need to care about the proper case humidity they are stored in. So you need to place a humidity monitor inside the case.
Hygrometers are also used to measure the humidity level in a terrarium. It is glued to the wall from the inside. It can track the change in humidity. If the humidity level is lower than it is necessary for this type of reptile, put a bathing unit in the terrarium and/or spray the ground with water.
Terrarium hygrometers can be conventional round or electronic with sensors.
Not only people but also plants want to breathe easily. Place a hygrometer into a greenhouse and the seedlings will not be frostbitten, and mold fungi will not deprive the long-awaited harvest. For plants growing in a greenhouse, it is very important to create the right conditions. Humidity, like soil, affects the plants’ yield. The ideal humidity level is 50-60%, of the soil – 65-85% (depending on the plants).
Budget devices and the middle-class ones can make mistakes in the performance of up to 5-10%. For more accurate units, the permissible error is 1-3%. At the same time, the measurement accuracy drops significantly when approaching the boundary values of 10% and 95%. Furthermore, the accuracy depends on the following characteristics:
The range of measurements. For most models of household hygrometers, it is 20% – 80%, despite the fact that the scale indicates from 0 to 100%. If the real room humidity value falls outside this range, then the measurement accuracy deteriorates significantly. More accurate electronic devices measure indicators in the lower limit of 6-15%, for industrial devices this indicator is 2-5%, the upper limit in both cases is 95-100%.
Measurement frequency (relevant for electronic devices). For household models, the value of 10-30 seconds is quite valid. The price for room hygrometers performing measurements at the level of industrial models of 0.5-1 sec. is unreasonably high, since for everyday use such frequency and accuracy is unnecessary.
Additional functionality. Most devices for domestic use are designed as multifunctional devices that can provide data on temperature, time pressure. Some models receive information from external sources. In this case, remote sensors can be installed both in other rooms and outdoors. The most advanced Wi-Fi hygrometer models are synchronized with a PC or smartphones and transmit the collected data to them for statistics or control of heating and humidifying devices.
An important factor to consider is whether the unit works from a power source or from a batter. In the latter case, pay attention to the operation time.
This is one of the beneficial features, as it gives you a possibility to monitor the device via some app and get information in time. You only need to enter some pre-set humidity limits in the house.
In case you would like to control humidity not only in one room, you should find out whether the device has a possibility of connecting additional sensors to one system for this aim.
This is a pure user factor. It takes into account additional functions such as memorizing values, as well as lights for working in a dark room.
Think if you need to store the measurements’ history. If you like to check the past figures, then this criterion is important for you. Some hygrometers store limited amount of data, others nothing at all.
If you require a hygrometer with precise measurement to satisfy ISO and other regulatory body requirements, you need the one with a NIST certification. This is mainly important for industrial devices.
Remember, well-known manufacturers include mark-up for the brand in the price, although there are models of little-known companies that are not inferior in quality to brand hygrometers. Also, consider the features the device is equipped with. The more of them it has, the higher the price will be.
In order to get the maximum benefit, it is necessary to know how this unit works, what measurements it makes, and decide on the operational conditions before choosing the best hygrometer. In addition, external data play an important role. In this regard, the best model in our list is Temp Stick WiFi Thermo-Hygrometer with Alarm and Remote Probe, as it possesses all the necessary features and it is ideal for any application where humidity levels need to be monitored.