“The only drawback is that it only becomes effective after a few months, but that is not a problem. […]”Read the review on Leroy Merlin
Rising damp specialists since 2012.
Devices designed and manufactured by us in France.
Easy-to-install devices for drying out walls.
Free advice to find out whether a device is suitable for your walls.
Wall drying device
Electromagnetic · covers Ø 30 m
€1,590€1,890
Wall drying device
Electromagnetic · covers Ø 60 m
€1,990€2,290
Wall drying device
Electromagnetic · covers Ø 30 m
€1,590€1,890
Wall drying device
Geomagnetic · no electricity · Ø 30 m
€1,590€1,890
Compare our six models by technology, power supply and coverage diameter. ATE devices plug into the mains; ATG devices work without electricity.
Comparison of ATE and ATG wall-drying devices
The coverage diameter is not a surface area in m². The right choice also depends on the layout of the building and the source of the damp. Please check prices and availability in our shop.
“The only drawback is that it only becomes effective after a few months, but that is not a problem. […]”
A really effective device against damp. I installed an ATG 25 and I cannot believe the results! I recommend this company for its professionalism and reliability.
“Very good! Simple installation. Happy with the result.”
An [ATE] device was installed in my salon because of rising damp, and I am very pleased with the results. Mr Coignard himself explained very clearly how to install it myself. It is very easy.
“I’m very satisfied with the product installed in my home; the result is what I expected! I recommend this product.”
I recently ordered the ATE device and I am very happy with my purchase. Delivery was incredibly fast and the parcel arrived in perfect condition. The product is very good quality and exactly what I expected. I highly recommend ATE to anyone looking for a reliable solution. Thank you!
Efficient delivery. Above all, there was a small issue with the product and the after-sales service was excellent! I will be back in six months to report the results!
Fast delivery. Perfect, everything is fine.
I am happy with my purchase of the wall drying device. Delivery was extremely fast and the product arrived in perfect condition. The device works perfectly and meets all my expectations. The parcel includes a manual with all the information. It is easy to install. No complaints.
I bought this product for the basement of my main home. It is too early to say whether it is effective.
Installation is quick. The product is French, which is why I decided to buy it, and it is good quality. I recommend it, especially at this price.
A very warm welcome from the company. I ordered an ATE at a great price, with fast delivery and easy installation. Time will tell, but previous customer reviews make me very confident about the results.
William Coignard is a professional who is dedicated to his company. Help Humidité is a reputable business and it is a pleasure to work with them.
Help Humidité is a very interesting platform for damp treatments. I have used it. I love it and recommend it.
Quick availability, a reliable company and helpful contacts. A well-designed product; I recommend it...
simple, quick and, above all, a very effective ATE
Selected customer reviews published on Leroy Merlin and Google. Reviews are translated where necessary. Each account reflects its author’s experience; models and results may differ.
Follow the step-by-step video and install your device yourself, with no building work.
Electromagnetic device, mains-powered
Geomagnetic device, no electricity




In one minute, see how our devices treat damp walls and rising damp. The ATE LC15, ATE LC30 and ATE MAX electromagnetic models start working as soon as they are plugged in, while the geomagnetic ATG needs no electricity and no maintenance.
Designed and made in France, our devices are easy to install, with no building work, and protect your home for the long term.
Identify the source of damp first: rising damp, water ingress, a leak or condensation. Choosing between ATE LC15, ATE LC30, ATE MAX, ATE LC30 PULSE, ATG LC15 and ATG LC30 depends on the building layout, the required coverage diameter and the available power supply.
Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.
Turnkey solutions
Products imagined
and designed in France
Products tested by the Emitech and Nexio laboratories
Secure payment
in 3 or 4 installments
ATE LC15, ATE LC30, ATE MAX and ATE LC30 PULSE are electromagnetic devices intended to help dry walls affected by rising damp. Depending on the model, their coverage diameter is 15, 30 or 60 metres. Made in France and laboratory tested, they must be installed and kept connected in accordance with their manual.
Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.
Help Humidité is recognized as a trusted expert in the fight against dampness in homes. Featured on television, radio, and in the specialist press, our expertise helps inform the general public and provide reliable solutions to effectively treat moisture problems and preserve the value of properties.
Discover Help Humidité wall drying devices for rising damp. The electromagnetic range includes ATE LC15, ATE LC30, ATE MAX and ATE LC30 PULSE, which require mains power. The geomagnetic ATG LC15 and ATG LC30 operate without electricity.
Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.
Identify the source of damp first: rising damp, water ingress, a leak or condensation. Choosing between ATE LC15, ATE LC30, ATE MAX, ATE LC30 PULSE, ATG LC15 and ATG LC30 depends on the building layout, the required coverage diameter and the available power supply.
Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.
The ATE wall-drying device must be installed directly at the bottom of a load-bearing wall, on a flat surface. For optimal operation, it is preferable that the wall is damp. It is important not to install the device on a lining wall.
ATE is an electromagnetic device that runs on electricity. It is generally recommended as the first choice. ATG is a geomagnetic device, fully autonomous and requiring no electricity. It is particularly suitable for second homes or public buildings, where a permanent electrical connection is not always possible.
“ATE LC15”: small areas (7.5 m radius).
“ATE LC30”: whole houses (15 m radius).
“ATE MAX”: large buildings (30 m radius), more powerful and suitable for large areas.
“ATE Pulse”: the same power as the LC30 with a modern design.
ATG LC15: coverage diameter of 15 m (7.5 m radius). ATG LC30: coverage diameter of 30 m (15 m radius). Both geomagnetic devices operate without electricity. Choose according to the building layout and the recommendations in the installation manual.
We recommend the electric ATE device because it is faster and more powerful than a geomagnetic device. As soon as you plug it in, it starts working immediately, offering greater effectiveness to address your dampness problems.
It is indeed preferable to follow our recommendations to achieve the best results. The device does its job effectively, but it isn’t magic either. For example, it cannot stop water infiltration. You’ll get more optimal results by following our recommendations.
No, we do not carry out at-home assessments.
These visits are often indirectly included in the final quote by some companies, which leads to unnecessary extra costs for the customer.
Our devices, with a 10-year warranty, help treat capillary moisture effectively.
To advise you accurately, you simply need to send us a few photos of your walls. We can then quickly guide you to the most suitable model, at no extra cost.








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