Air-Dryr 500 Dehumidifier - SKU 1459

$69.99 USD

Mildew is a problem in any wet or damp environment. Removing moisture from the air can help protect important equipment and supplies in small spaces. The Air-Dryr 500, unlike a typical small dehumidifier, works by preventing moisture condensation, mold, and mildew through a simpler operation of heating the air above the dew point. Its compact size makes it perfect for small spaces. Rectangular unit measures 13.5 × 5.5 × 4.25” high (34 × 14 × 11 cm high).

Unlike other compact dehumidifiers, it does not require a drip pan and the need to drain it. It works by drawing moist air in, heating it, and then expelling dry air out the top. It’s made to work efficiently in an enclosed space of about 500 cubic feet (14.2 cubic meters). It is designed to be used on a hard, flat surface, and airflow could be restricted when it is placed on a high pile carpet. The unit is also energy efficient with a 70-watt heating element that only uses 0.6 amps of electricity.

Highlights Click here to learn more about the product.


  • Slim and stable design — Handles up to 500 cubic feet (14.2 cubic meters) of living space. Ideal for boat, RV, home, office, factory and any area with moisture build-up. Rectangular unit measures 13.5 × 5.5 × 4.25” high (34 × 14 × 11 cm high).
  • Silent operation — No switch, fan, or thermostat. Uses natural convection to circulate the air.
  • Low operating cost — Designed for 24-hour operation.
  • Safe to the touch. Safe for marine use.
  • Neutral beige polycarbonate housing for strength and durability.

WARNING: Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

FAQsClick here to view popular questions and answers about the product.

What Does a Small Dehumidifier Do?

The main purpose of a dehumidifier is to remove moisture from the air. Air-Dryer is different. It prevents moisture in the first place to help prevent mold and mildew. It can be used in any space where you store items that are sensitive to moisture. The Davis Instruments Air-Dryr 500 is designed for continual use in a smaller space. Mold and mildew must have moisture, warmth, and darkness to grow.

Do Small Dehumidifiers Work?

Typical small dehumidifiers work well but require maintenance and draining of the drip pan. The Air-Dryr 500 works very well when used according to the instructions and in a space that is at or below the recommended size, and requires no maintenance and has no drip pan. It is not designed for outdoor use, but it is designed to be compatible with marine use.

What Are the Advantages & Disadvantages of a Small Dehumidifier and Air-Dryr?

One of the advantages of both a compact dehumidifier and Air-Dryr is they can be used in small spaces. You can place an Air-Dryr in a way that is barely noticeable, as long as you are sure to follow any safety precautions contained in the instruction manual.

But Air-Dryr has many advantages over other small dehumidifiers. Typical dehumidifiers remove moisture from the air and drip the moisture into a pan that needs to be drained. Air-Dryr draws in moist, cool air and then heats the air above the dew point so that moisture remains suspended in the air rather than condensing on surfaces. Warm air rising and cool air drawing into the Air-Dryr creates natural convection that circulates the air and prevents moisture from settling.

All you have to do is to plug it into a 110/120 Volt outlet and the 70-watt heating element will begin to heat and remove moisture from the air. There is no moisture collection reservoir to empty, and no water container to overflow. The outside does not get hot to the touch. The best part is that there is no fan, thermostat, switch, or moving parts. This means that it has quiet operation, and there are fewer moving parts to break. This solution provides a way to create an atmosphere that prevents mold and mildew from forming and will help your space continue to feel dry and warm.

Shipping & Delivery

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

Terms And Conditions

Making A Purchase

Making a purchase could not be easier. Just browse our store and add any items that you wish to buy into the shopping cart. After you have finished your selections, click on 'Checkout' and you will be asked for a few details that we need to be able to complete the order.


We accept credit cards and PayPal for payment. If you are shopping from outside of the USA, place your order and your credit card company will convert the transaction to your own currency. Please note that we can not ship to all international locations. If we are unable to ship to your location, we will advise you and your credit card will not be charged.

We accept Discover, Visa, Master Card and American Express. We do not charge for any item until it is ready to ship. Back-ordered items are not charged until they are shipped. You may send your credit card information via phone, fax, snail mail or securely over the Internet.

When confirmation of order is received, this is to indicate that we have received your order. It does not indicate that a contract exists between us. We will indicate acceptance of your order, and hence a contract between us, when we send you an invoice. We have included this term to protect us in the case that a mistake has been made in pricing, we have inadvertently underpriced goods, or we are no longer able to supply a particular product for some reason. In the case of a change of price, we will always contact you first to ensure that the price is acceptable.
 Credit Card Security
 When you place your order with us, your credit card number is encrypted for transmission to us using 128 bit encryption. Your credit card details are never by us since they are transmitted directly to the processing company.  As such, all refunds must be made to the same card used for the purchase.

Contacting Us
If you need to reach us, please email us using the link on the store page, alternatively, you can reach us at:

Tech Instrumentation Inc.
750 E Kiowa Ave.
PO Box 2029
Elizabeth, CO 80107-2029
USA

Phone: [800) 390-0004 Toll free
Phone: (303) 841-7567
Fax: (303) 840-8568

NOTE: We do not accept unsolicited advertisements at the facsimile number.


Email: info@techinstrument.com

Shipping And Handling
Shipping and handling charges are shown on a page just prior to your placing the order. We can ship to many parts of the world that are not allowed on the site. Please e-mail us for a shipping quote. Please call if you have any questions. 
PLEASE NOTE: If you return an item that you ordered with free shipping, we may, at our option deduct our shipping cost from your refund.

Delivery Schedule
We will normally ship your order to you within 1 to 3 business days. We will notify you via e-mail or telephone if we will be unable to ship within 3 business days. If your order is urgent, please let us know. We'll do our best to expedite urgent orders.
Back Orders
If your item is not in stock and we will not be able to ship within 10 business days, we will back order for you. You will always be emailed with the option to cancel your order if you would rather not wait.
Tax Charges
Orders made from within Colorado - sales tax will be applied. We do not currently charge taxes outside of Colorado, but some of our payment processors may charge sales tax and remit it directly to your state.
Guarantee
Most of our products come with a one year warranty. Most of the Cooper-Atkins thermometers which carry a five-year warranty. Most probes come with a one year warranty. Buyer assumes full responsibility in determining the suitability of these items for buyers intended use.
Privacy Policy
Tech Instrumentation will not disclose buyers' information to third parties other than when order details are processed as part of the order fulfillment.  Cookies are used on this shopping site to keep track of the contents of your shopping cart, to store delivery addresses if the address book is used and to store your details if you select the 'Remember Me' Option. They are also used after you have logged on as part of that process. You can turn off cookies within your browser by going to 'Tools | Internet Options | Privacy' and selecting to block cookies. If you turn off cookies, you will be unable to place orders or benefit from the other features that use cookies.

Returns Policy
Buyer assumes full responsibility in determining the suitability of these items for buyers intended use.  Most items come with a minimum one year warranty against defects in manufacturing.

CLAIMS FOR SHORTAGES OR ITEMS DAMAGED IN TRANSIT MUST BE SUBMITTED TO US WITHIN 3 DAYS OF RECEIPT OF THE PRODUCT. IF DAMAGE IS NOTED UPON DELIVERY, PLEASE NOTIFY CARRIER IMMEDIATELY AND BE SURE TO KEEP THE SHIPPING CONTAINER AND ALL PACKING MATERIAL. NO CLAIMS FOR SHORTAGES OR CARRIER DAMAGE WILL BE HONORED BEYOND 3 DAYS AFTER DELIVERY.

New and unopened items sold by Tech Instrumentation.com may be returned within 30 days of delivery. All items require prior authorization from Tech Instrumentation before they can be returned. We will also pay the return shipping costs if the return is a result of our error (e.g. you received an incorrect or defective item). New and unopened items being returned due to a customer error in ordering or handling will be subject to a restocking fee of 30% and must be returned freight prepaid.

All returns require a RGA number from Tech Instrumentation prior to being returned. Items must be returned postage paid to our facility in order to be considered for refund. Please call 303 841-7567 to obtain a RGA number if you need to return an item. Non defective returns must be in the original unopened packaging with all accessories to be eligible for a refund. Unopened items are subject to a 20% inspection and restocking charge. Non defective items that have been opened or are missing any parts including instructions are not eligible for return. Defective items will be repaired or replaced per mfg. policy. Shipping & Handling charges are not refundable. Service charges (repairs, certifications etc.) and special order items are never refundable. Non defective items must be returned within 30 days of the date we shipped to you in order to be eligible for refund. We pay shipping back you your location for all warranty returns. Items that have been damaged due to misuse or abuse, as judged by Tech Instrumentation are never eligible for a refund.

Refused/Undeliverable shipments: We will refund a minimum 75% of the cost of the product less shipping costs (both ways) for shipments that are returned to us as refused or undeliverable. Service charges (repairs, certifications etc.) are warranted but never refundable. Purchaser agrees to pay all charge-back and related costs incurred by us in the event a credit card charge-back is initiated by the purchaser for refused shipments. Please contact us directly and we will refund per our policies.  Shipping and handling charges are not refundable except in the event of an error on our part.

Type: Marine

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Mildew is a problem in any wet or damp environment. Removing moisture from the air can help protect important equipment and supplies in small spaces. The Air-Dryr 500, unlike a typical small dehumidifier, works by preventing moisture condensation, mold, and mildew through a simpler operation of heating the air above the dew point. Its compact size makes it perfect for small spaces. Rectangular unit measures 13.5 × 5.5 × 4.25” high (34 × 14 × 11 cm high).

Unlike other compact dehumidifiers, it does not require a drip pan and the need to drain it. It works by drawing moist air in, heating it, and then expelling dry air out the top. It’s made to work efficiently in an enclosed space of about 500 cubic feet (14.2 cubic meters). It is designed to be used on a hard, flat surface, and airflow could be restricted when it is placed on a high pile carpet. The unit is also energy efficient with a 70-watt heating element that only uses 0.6 amps of electricity.

Highlights Click here to learn more about the product.


  • Slim and stable design — Handles up to 500 cubic feet (14.2 cubic meters) of living space. Ideal for boat, RV, home, office, factory and any area with moisture build-up. Rectangular unit measures 13.5 × 5.5 × 4.25” high (34 × 14 × 11 cm high).
  • Silent operation — No switch, fan, or thermostat. Uses natural convection to circulate the air.
  • Low operating cost — Designed for 24-hour operation.
  • Safe to the touch. Safe for marine use.
  • Neutral beige polycarbonate housing for strength and durability.

WARNING: Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

FAQsClick here to view popular questions and answers about the product.

The main purpose of a dehumidifier is to remove moisture from the air. Air-Dryer is different. It prevents moisture in the first place to help prevent mold and mildew. It can be used in any space where you store items that are sensitive to moisture. The Davis Instruments Air-Dryr 500 is designed for continual use in a smaller space. Mold and mildew must have moisture, warmth, and darkness to grow.

Typical small dehumidifiers work well but require maintenance and draining of the drip pan. The Air-Dryr 500 works very well when used according to the instructions and in a space that is at or below the recommended size, and requires no maintenance and has no drip pan. It is not designed for outdoor use, but it is designed to be compatible with marine use.

One of the advantages of both a compact dehumidifier and Air-Dryr is they can be used in small spaces. You can place an Air-Dryr in a way that is barely noticeable, as long as you are sure to follow any safety precautions contained in the instruction manual.

But Air-Dryr has many advantages over other small dehumidifiers. Typical dehumidifiers remove moisture from the air and drip the moisture into a pan that needs to be drained. Air-Dryr draws in moist, cool air and then heats the air above the dew point so that moisture remains suspended in the air rather than condensing on surfaces. Warm air rising and cool air drawing into the Air-Dryr creates natural convection that circulates the air and prevents moisture from settling.

All you have to do is to plug it into a 110/120 Volt outlet and the 70-watt heating element will begin to heat and remove moisture from the air. There is no moisture collection reservoir to empty, and no water container to overflow. The outside does not get hot to the touch. The best part is that there is no fan, thermostat, switch, or moving parts. This means that it has quiet operation, and there are fewer moving parts to break. This solution provides a way to create an atmosphere that prevents mold and mildew from forming and will help your space continue to feel dry and warm.