Thermador Swamp Cooler Instructions

by James Werning
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classic car image by Mariusz Blach from

The Thermador swamp cooler is a classic automotive air conditioning system. It is often referred to jokingly as a "missile launcher" because of its peculiar canister shape and unique mounting outside the car. In the 1950s, enterprising dealers rented out these coolers to motor cars driving across the Mojave Desert of California. Used Thermador coolers are available for purchase as of 2011, but the manufacturer's instructions are often difficult to find. Thankfully, the units are simple to install and operate.

Step 1

Roll the passenger window halfway down. Slip the lower edge of the support bracket in between the rubber window seal and the window. Place the inside edge of the cooler into the upper window channel. Roll up the window until the cooler is held firmly in position, but don't roll it up so tightly that you damage the window.

Step 2

Remove the cover from the fill hole on top of the Thermador. Pour water from a pitcher into the hole until it is nearly full. Replace the cover.

Drive the vehicle (so that air will flow through the Thermador). Pull the string as needed to increase the cooling effect. Refill the water level as needed.

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