During the summer, the crawl spaces of houses are very susceptible to high humidity, which provides optimal growing conditions for mould. There are several reasons for excessively high humidity. Warm air can enter the ground, which, when cooling down, increases the relative humidity. Water rises from the ground by capillary action, rainwater is diverted to the bottom or pipes running along the bottom of the space may break.
Managing humidity levels in a crawl space is important. Good ventilation and sufficient insulation help prevent moisture from entering the crawl space. Additionally, directing rainwater away from the vicinity of the building, such as with proper drainage systems, reduces the risk of moisture.
If mould starts to grow on the base structures, it is often transmitted at some point to the indoor air of the building and causes symptoms in people. In addition, the supporting structures of the floor are weakened as mould decays organic structures, especially wood.
In new houses, crawl space insulation and mechanical ventilation are often added. Mechanical ventilation often keeps the room warm enough to prevent a sudden rise in relative humidity. Even in an insulated basement, it makes sense to monitor conditions in case of potential problems.
Excessively dry air is often unlikely to be a problem in the basement of a house. However, dry air can dry out wooden structures and cause structural problems.
Measure the humidity of a crawl space and ventilate if necessary
Measuring crawl space humidity levels is easy with RuuviTag It is a small and robust measuring device, so it fits easily into even the shallowest crawl space. With the free Ruuvi Station mobile app, you can check real-time conditions in your crawl space, and also examine changes in conditions from past days. With the Ruuvi app, you can receive alerts about unfavourable conditions and take action to remedy the situation.
A sudden rise in humidity could be caused by a burst pipe or a blocked drain, for example. There are many different ways of draining a space, but good ventilation goes a long way. Ready-made dehumidifiers and ventilation systems are available on the market to help reduce the humidity of the space. With RuuviTag, you can also monitor how dehumidifiers and ventilation solutions are actually working and get the humidity in your crawl space to a healthy level, faster.
It is important to regularly monitor the humidity level in the crawl space and respond immediately to any moisture deviations. It is advisable to seek professional advice if needed in order to plan and implement the appropriate measures to manage crawl space moisture and maintain the long-term health of the building.
Get a Convenient Sensor to Your Crawl Space!
Monitor conditions and receive alerts if something is wrong in your crawl space.
39,90€
Ruuvi is based in Finland. If you’re an EU consumer, VAT is included. If you’re a non-EU customer, you don't pay VAT. If you're an EU business, insert your VAT ID at checkout.
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RuuviTag Sensor (4in1)
| 5 stars | 94% | |
| 4 stars | 6% | |
| 3 stars | 0% | |
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RuuviTag Sensor (4in1)
| Quantity | Unit Price(€) |
|---|---|
| 1 | 39,90 |
| 2 | 37,40 |
| 3-5 | 36,90 |
| 6-8 | 35,90 |
| 9-12 | 34,90 |
| 13-25 | 33,90 |
| 26-99 | 32,90 |
Are you looking for bigger quantities? Contact us for pricing.
⭐⭐⭐⭐⭐ Excellent sensors for RV monitoring and Victron VRM integration
I am extremely satisfied with my Ruuvi sensors.
I use several of them in different locations inside my motorhome: in the refrigerator, battery compartment, living area, kitchen area and other positions. Installation was very simple and the sensors have been working flawlessly from day one.
What impressed me most is the excellent integration with the Victron ecosystem. Through Victron VRM I can monitor all sensor data remotely 24/7, which is incredibly useful when living and travelling off-grid.
The accuracy is outstanding. The pressure readings of different sensors are almost identical, showing only minimal differences, which gives me great confidence in the quality of the measurements. Temperature and humidity readings have also proven to be very reliable.
I have even used the sensors to evaluate the performance of a portable compressor cooler. Thanks to the precise temperature logging, I was able to see that the cooler dropped from 20°C to 0°C in about 30 minutes and reached -20°C in less than an hour. Without Ruuvi sensors, such testing would have been much more difficult.
Battery life has been excellent, setup is easy, and the overall user experience is outstanding.
For anyone using Victron equipment, RVs, boats, off-grid systems, refrigerators, freezers or environmental monitoring, I can highly recommend Ruuvi sensors.
Excellent!
After integrating four RuuviTags into my Victron Cerbo GX / VRM system in our Rapido motorhome, I can honestly say they have transformed the way I monitor the vehicle.
The setup now provides live temperature, humidity and pressure monitoring directly inside the VRM portal, allowing me to monitor critical areas including:
Battery Box
Orion DC-DC Charger Compartment
Engel Fridge
Main Rapido Fridge Area
What impressed me most was how seamlessly the RuuviTags integrated with the Cerbo GX via Bluetooth. Once connected, the data appears natively inside VRM and can be used for real alarms and automation.
I have now configured:
High temperature alarms
Low temperature alarms
VRM email notifications
Relay-triggered audible siren alarms
The system is now capable of warning me immediately if:
the lithium battery compartment gets dangerously cold
the battery box overheats
the Orion compartment becomes too hot
ventilation or airflow problems occur
The accuracy and stability of the readings have been excellent. The tags update reliably and provide a very clear picture of what is happening inside the motorhome.
One of the major advantages is that the system no longer relies on older digital-input alarm methods or complex workarounds. The RuuviTag + Cerbo GX combination feels like a modern, professional-grade monitoring solution.
The compact size, long battery life and wireless operation make installation extremely easy. No extra wiring was required for the sensors themselves.
For anyone building a Victron-based off-grid system, especially in a motorhome, caravan, marine or lithium battery installation, I would highly recommend RuuviTags.
They add a level of visibility and protection that is difficult to achieve any other way at this price point.