Which is better, Adjustable Spot Cooler or Cold Gun?

It is interesting to consider which product might be better, the Adjustable Spot Cooler or the Cold Gun. The usual American notion is most likely that bigger (more powerful) and more features is always better.

I would tend to challenge that notion though. When it comes to the Cold Gun, we have 4 very good choices to pick from. All of which have their place for the right application. We have two basic sizes, 1000 Btu/hr. and 2000 Btu/hr. It might be common sense on one hand to always say that 2000 Btu/hr. is better than the smaller capacity. But, what happens when you don’t have the compressed air volume to operate the larger unit?  You end up with a pressure drop in your compressor system which affects the performance of the Cold Gun and perhaps even other equipment that depends on steady pressure from the compressor system. So, in this thought process, perhaps the smaller 1000 Btu/hr. unit would be better to consider.

Now, let’s take the added dimension of adjustability of the temperature on the output flow as you have with the Adjustable Spot Cooler. In many cases having this flexibility is a very good attribute. For example, let’s say you have an application where you need a very specific temperature to test a thermostat. One batch requires 20F and the next batch might be -10F.  No problem with the Adjustable Spot Cooler.

Another example might be that the process requires that the temperature of the output flow really be dialed in exactly at the set point. The Adjustable Spot Cooler allows for this.

Another scenario might be that you have a process that requires spot cooling but you also have an operator who likes to turn knobs and push buttons because they think they know how best to set up anything within their realm (which isn’t always so). In this case a Cold Gun might be a better choice so that the operator doesn’t end up setting the Adjustable Spot Cooler to where it freezes up internally, which can happen at very extreme cold settings if the compressed air is not treated properly to lower the dew point.

Ultimately, what I’m trying to say is that for every application there is a good solution and this is why we have so many choices for our customers. If you need help determining which of these spot coolers might work better for you, please give us a call and we can help you sort the issues.

Neal Raker
Application Engineer
nealraker@exair.com

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