OEMs of Prefabricated Buildings and Special-Use Vehicles (Storage, Hazardous Goods, Crews, Military)


For an overview of DMC’s harsh-duty air conditioners, Click here.

If you have a specific application in mind, please complete our Project Data Form for Air Conditioners or Filtration. An engineer will then prepare a proposal with our recommended solution.

If you have questions about how hazardous/explosive areas are classified, Click here

For an overview of DMC's low-maintenance and no-maintenance filtration systems, Click here.

All DMC products retain their harsh-duty characteristics when modified for hazardous (“explosion-proof”) environments. Click here

If you have more general questions or comments, please use our Contact DMC Form.

Certain customers for prefabricated buildings and special-use vehicles require tougher, more resilient-products than others, particularly for extreme or hazardous environments. DMC designs and builds harsh-duty air conditioners, with and without heat, to help you with those clients.

DMC specializes in heating, ventilation and air conditioning equipment for tough applications — typically hot (or cold), corrosive, dusty, hazardous environments with explosive gases or dusts in the air, or installation with unstable electrical supplies. If your products or vehicles travel offshore, in military camps, or in other remote or inaccessible locations, the lack of a ready supply of spare parts and technicians exacerbates these difficulties.

If you lease some of these buildings, you share your customers’ problems even more.

DMC can help! We design and build durable industrial HVAC equipment specifically to make them rugged, tolerant of wide ranges of temperature, types of corrosion, and sand, dust and other dirt in the air. We make our air conditioners easy to maintain and repair without special skills or parts — and we intentionally choose parts for which users can find replacements, or adequate substitutes, almost anywhere in the world. Therefore, we can help assure the stability of your buildings andkeep your warrant and service costs down, even under severe conditions.

I. Designed for extreme ambient temperatures and altitudes

DMC rates the cooling capacities of our air conditioners at ambient temperatures of 131°F (55°C), not just at the normal 95°F (35°C), to assure full capacity in hot locations. Furthermore, our patented design assures that they will maintain this full cooling capacity down to low-ambient temperatures without adjustment and without delicate fan-speed controls and sensors.

Note: if you must also heat your buildings or vehicles, DMC offers installs integral, corrosion-resistant incoloy tubular heating elements.

II. Engineered for dust and sand

DMC designs all its air conditioners and other HVAC equipment not to clog or lose efficiency in heavy dust.

All our condensers and evaporators have widely-spaced fins so that sand and dust will pass through them, and they have electrostatically-applied baked-on epoxy coatings to help prevent the porosity that can help particles stick to the fins.

We use only sealed compressors and extra-strong, totally-enclosed motors with 300-series stainless-steel shafts.

Our backwardly inclined blower wheels tolerate heavy dirt loads, and we use an especially strong polyamide-6 plastic reinforced with 30% glass fiber to make them stronger, quieter, more energy-efficient, and more corrosion-resistant than almost any other type of wheel.

III. Resist corrosion

DMC takes many steps to protect its equipment to assure that your host equipment will receive proper HVAC protection. We make all cabinets exclusively of the most corrosion-tolerant stainless steel — 316L, not just the less-resistant 304. We protect all the condensers and evaporators with the highest-quality, lowest-porosity (particularly effective in marine environments) epoxy applied electrostatically in a bath and then baked to cure.

DMC seals key electrical components inside NEMA 4X/IP66 boxes to keep out all corrosive gases, moisture, and dusts.

For potentially radioactive environments such as nuclear power plants, DMC can modify the designs to utilize only materials that do not absorb radioactivity.

IV. Reliable mechanical, not electronic, controls:

As you know, the same electrical problems that can damage your products' electronics could damage the electronic controls of most HVAC equipment. DMC aims to eliminate that risk by using only mechanical controls. This also helps eliminate the need for specially-trained technicians to service the equipment because it can be repaired easily with components that can be purchased locally in most places.

V. Durabililty

Because DMC makes its air conditioners for extreme applications, we use over-sized and heavy-duty components that last longer than those of ordinary commercial and residential air conditioners.

Since DMC designs its units specifically for durability and operations under extreme conditions, they retain their energy efficiency under such conditions. DMC air conditioners are the “greenest” under harsh conditions.

Reminder about “Explosion-Proofing”

Even when DMC adapts its units for flammable and explosive environments, they retain all their other harsh-duty advantages and durability. Therefore, they afford a far better return on investment than residential or commercial units modified for hazardous locations. In addition, DMC makes a special priority the development and production of robust Division/Zone 1 air conditioners, with and without heat.

If you have any questions or comments, please let us know. If you have a particular application in mind, click here. We look forward to having the opportunity to team up with you, either to work with our standard products or to develop ones that will more specifically suit your needs.

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