Best Hygrometer For Crawl Space Or Basement: 2021 Reviews

Best Hygrometer for Crawl Space

Did you know that the biggest threat to your crawl space is high RH levels? Well, relative humidity is basically the amount of water in the air that is relative to the water that air can hold at a particular temperature.


It means that the humidity may spell trouble for homes once you leave your crawl space unchecked.

Keeping the humidity level under 55% prevents mildew and mold from growing and can hinder dust mite invasion.

It reduces the possibility of structural damage, which is due to wood rot. Thus, the humidity level of your crawl space must not be ignored.

Quick Comparison Chart

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Name Wireless Sensor Price
Acu-Rite 00592A4 YES CHECK PRICE
AMIR Digital – Budget Pick YES BUDGET PICK
Scotte Wireless Digital YES CHECK PRICE

Best Hygrometer For Crawl Space Or Basement

Acu-Rite 00592A4

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Acu-Rite 00592A4 is a replacement for the earlier mode that perfectly complements your dehumidification solution.

It is a handy device that shows remote temperature and humidity through a wireless transmitter. This transmitter could be mounted inside a crawl space or basement to provide you an accurate reading of the relative humidity in any remote location.

This also shows the moon phase and comes with an atomic clock that has snooze and alarm. It will help you in monitoring the effectiveness of your humidifier or dehumidifier.

Some of its features include indoor and outdoor temperature and humidity and Celsius or Fahrenheit selectable. This has a humidity range of 20% up to 90%, minimum or maximum memory.

There is also a manual clock setting option. It features a bright blue backlight, a backlight button, and a temperature range of 0 to 50 degrees Celsius or 32 to 122 degrees Fahrenheit. Its sensor unit range is at -40 to 70 degrees Celsius or -40 to 158 degrees Fahrenheit. Its sensor has 433 MHz transmission range with a maximum of 33 meters or 100 feet unobstructed.

Acu-Rite 00592A can be mounted on a wall. The main unit needs 3 AA batteries that you can get separately, while the sensor needs 2 AA batteries that are not included in the package.

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ThermoPro TP65 – Top Pick

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The only way to make sure that your crawl space will stay dry is to invest in hygrometers like ThermoPro TP65. Once it reaches 70%, you will know it is time to break out your dehumidifier.

It is equipped with high-quality professional-grade sensors. It provides accurate measurements, whether it’s for temperature or indoor humidity.

It enables you to be aware if an adjustment is necessary for your household.

Accuracy at Its Finest

The humidity gauge and indoor thermometer isn’t only accurate, but also user-friendly. It comes with backlight for last-minute nighttime checks on the current readings.

Aside from that, it’ll be necessary for unmounting the device off the wall and fridge to switch the settings. Just use its sleek touchscreen display.

The temperature gauge offers a lot of valuable information on humidity level and temperature. With this, you will know if your area is too dry, too humid or normal.

Big Display with Huge Numbers

The device takes pride in its four-inch LCD display with big numbers that make it easy to read at far distances. You will also know if the battery is low with its low battery indicator.

Backlight Function

ThermoPro TP65’s blue backlight is very bright and makes the screen very easy to read in low light conditions. It turns off automatically after 15 seconds.

1- Year Warranty

To avail the 1-year warranty of ThermoPro TP65, you have to register your unit after purchasing it and you can even extend it for 3 years. Visit ThermoPro website if you want to register your hygrometer.


It measures outdoor or indoor temperatures as well as humidity percentages wirelessly.

It is capable of displaying readings from up to three outdoor remote sensors for monitoring different locations.

Works 24/7

The min and max temperature and humidity percentage displayed and recorded 24/7. The humidity and temperature trend arrows show whether it is getting colder or warmer.

Wider Range

It will monitor with 60m or 200ft remote range, which can get a strong signal. It is powered with batteries and they are included once you purchase the unit.


Celsius and Fahrenheit degree can be switched conveniently with a touchscreen display. The screen may light up for more convenient and easy reading.

Remote Sensor

There’s a remote sensor included in the package. If you want extra sensors, they are sold separately.

Customer/User Impression

Many people love how ThermoPro TP65 works. If you’re looking for a perfect humidity monitor for your crawl space, this is the best model for you.

It is big enough to read the information at a distance. With its touchscreen display, it easily illuminates for several seconds so it can be read in dark places.

Such units sync immediately with one another so all you need to do is installing batteries in your new receiver and within thirty seconds, it links with another unit.

Although the battery included has no definite life expectancy, you can be assured that it will last longer.

Another user loves how accurate ThermoPro TP65 is. You’ll be happy to own one of these if you want peace of mind.

You can navigate it easily and you can quickly access information through its great display. Other than that, you will be glad to know that you can use different sensors with this.

However, there is only one remote sensor included. If you like to add one, you have to buy separately.

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ThermoPro TP-60S

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ThermoPro TP-60S is an indoor and outdoor thermometer and humidity monitor with a wireless range of 200 feet (60 meters).

It comes equipped with professional-grade sensors that make this is a great option to get the accurate measurements you need.

Using TP-60S to ensure correct humidity control has essential skin, allergens, and some health benefits inhabiting the growth of bacteria, mold, fungi, viruses, mites, and some asthma-inducing agents, ideal for you to boost your room comfort as well as stay healthy.

There are many features that you will love about ThermoPro TP-60S. One of these is its LCD screen display that is easy to read and shows the current outdoor or indoor temperature and percentage of the humidity. With humidity and temperature percentage, there is an indicator of whether it’s high or low. The display stands upright if you want to use it on a tabletop.

It is also wall-mountable. It includes all-time low and high records for humidity and temperature.

The remote unit of ThermoPro TP-60S must not be placed under direct sunlight. The reason behind it is that sunlight would heat up the remote sensor that results in high-temperature reading compared to air temperature that should be measured.

The remote sensor should be placed upwards always so that the rain will not get inside the sensor through vent holes on the sensor’s bottom that functions to let remote sensors detect humidity and environmental temperature more quickly and precisely.

Read a more in-depth review.

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AMIR Digital Hygrometer – Budget Pick

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AMIR Digital plays an important role in your wine cellar, greenhouse, office, and home. It will help you monitor the humidity and temperature of indoor with precise measurement, enabling you to be aware of the ambient as well as take care of your family and yourself.

One of the features of AMIR Digital is indoor and outdoor monitoring. It measures outdoor and indoor temperature. It also measures humidity level in real time.

Aside from that, it comes with a big LCD display. The numbers are big enough for you to read. That is why it’s very convenient to use.

There are two ways to install it. Made with a retractable stand at it’s back and wall hanger, you can mount it on your wall easily. You can also just place it on the top of your table.

However, when using the device, there are some things that you should take note. Don’t immerse the unit in water as it can damage the product.

Change Fahrenheit or Celsius unit first. Its default is Celsius, so you might want to change to Fahrenheit.

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Scotte Wireless Digital Hygrometer

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Scotte Wireless Digital has different functions as it can help in outdoor temperature and humidity detection, alarm clock, time, indoor temperature, and three-speed touch backlight adjustment. You simply need to top if you want to change its brightness, from low light to medium bright, and highlight and adjust based on your preferences. This makes this tool very practical and convenient to use.

The humidity monitor has an LCD display of 4 inches that comes with a backlit touchscreen. This makes it easier to read and monitor the humidity and temperature even under dim light conditions. This is also very simple and easy to use. With its accurate humidity and temperature detection, this is extensively used not just in a basement but also in living rooms, bedrooms, baby rooms, study rooms, wine cellars, cigar storage rooms, greenhouses, and warehouses.

Its indoor temperature range is at range 0~50°C or 32~122°F with an accuracy +/- 1 c for every 30 seconds. Meanwhile, its outdoor temperature range is at -20~70°C or -4~158°F with an accuracy +/- 1 C, that is detected at every 30 seconds. The host can receive the outdoor temperature transmitter at a range of 100 meters.

The product uses the included DC 5V power adapter or the separately bought 3 AAA batteries as its power supply. The outdoor transmitted is being powered by 2 AA batteries that you can get separately. When the unit is powered by batteries, you can touch the snooze or light key on its top part for the backlight to light for 8 seconds. If this uses the DC 5V power supply, you simply need to touch the snooze or light key on the device’s top part to switch the backlight’s brightness. The switching sequence is long, to semi-long light, long mini light, to turn off.

All customers who purchase it can enjoy a money back guarantee good for 30 days. They can also return and receive a refund if they don’t feel satisfied with their purchase for any reason. There is no risk involved when you get this unit and the maker offers the best service to their customers.

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Crawl Space Humidity

High humidity levels in your crawl space can cause porous materials like insulation and wood to soak up moisture like a sponge.

It becomes the best environment for mold to thrive and grow. During humid and rainy weather, sub-basements frequently become damp with the moisture levels that exceed 70% RH for a long period of time.

It means that weeks after heavy rain are typically when the symptoms get worst. If it happens, the extra moisture encourages the mold to grow on your wooden flooring joists and on some organic materials.

Mold eats the organic matter, which means that it likes anything that’s once living like trees and anything processed from these.

That is the reason why mold is often found growing on fiberboard, drywall, lumber, plywood, and chipboard in crawl spaces.

Controlling moisture is the best way to eliminate issues with dust mites, mold, and wood rot.

Unvented areas that have dirty floors are particular to be a damp environment where mildew and mold and wood rot could grow easily.

Even spaces with concrete floors can have too much moisture.

Drying out a sub-basement is definitely a wise move. It isn’t only beneficial to the health of your family, but also the value of your home.

Final Word

Most homes and buildings are constructed with crawl spaces, which can be hard to maintain and reach.

If water gets there, it could cause expensive structural and foundation damage and mold.

Luckily, with the information above and armed with the right hygrometer, it can be simple to monitor such areas for possible problems and alert you if conditions become severe.