Tuesday, December 5, 2023


Air-Dryr fights rust, mold and mildew in hidden places

Notice to RV owners: Moisture is insidious. It can hide unseen in the dark depths of cabinets and lockers. Even small amounts can cause rust, mold and mildew to set in. The result can be anything from a blemish to the complete loss of an item. Air-Dryr from Davis Instruments is an inexpensive way to stave off damaging humidity.

Air-Dryr is engineered to operate 24/7. Plugged into a 110/120V outlet and placed as low as possible, it warms the damp air to above the dew point. As the dry air is released through the top vents, cool, damp air is drawn into the device and processed. For safety, a thermal cutoff turns off the device in the event that something falls on top of it and blocks the air flow.

Without any moving parts, Air-Dryr is completely silent. Its durable polycarbonate housing is built to withstand years of use. UL Listed, it’s completely safe to handle when plugged in.

Two sizes are offered. Air-Dryr 500 has a 70-watt heating element and handles up to 500 cu. ft., yet draws only 0.6 amps. It measures 14″ L x 5″ W x 4.5″ H.

With a 130-watt heating element, Air-Dryr 1000 takes care of up to 1,000 cu. ft. of space. Drawing only 1.1 amps, it is 13.5″ dia. x 4.25″ H.

You can find the Air-Dryr 5oo and the Air-Dryr 1000 on Amazon.

You can find Bob Difley’s RVing e-books on Amazon Kindle.

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Elizabeth LaTendresse (@guest_38657)
4 years ago

A while back I remembered someone talking about packets of chemical for reducing moisture. When they were saturated you placed them in the sun to recharge. Does anyone remember this? I’m trying to find the product.

RV Staff
4 years ago

Hi, Elizabeth. Sorry for the delay in replying. Here’s a link to our article from last summer about the Moso Natural Air Purifying Bag. https://www.rvtravel.com/bamboo-charcoal-filled-bag-absorbs-odors-moisture-pollutants/ Thanks for asking. 😀 —Diane at RVtravel.com

John T (@guest_35875)
5 years ago

This is not a dehumidifier. It is simply a heater. Heating the air reduces the relative humidity, but does not remove water vapor. When the air cools to its original temperature, the relative humidity will be be back where it was to begin with.

Robin (@guest_36312)
5 years ago
Reply to  John T

I agree 100%, and the manufacturers answer to this does not answer anything. To reduce the water in the air the water has to go somewhere, and this device does not appear to remove any water.

Mike Sokol
5 years ago
Reply to  Robin

I suspect this is just a simple heating element. Sort of like a 75-watt light bulb that doesn’t make any light. I would agree that it really can’t dehumidify anything, just raise the air temperature in its surrounding area by a few degrees.

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