<p>At the moment there are two tags related to fans:</p>

<ul>
<li><a href="https://3dprinting.stackexchange.com/questions/tagged/print-fan" class="post-tag" title="show questions tagged &#39;print-fan&#39;" rel="tag">print-fan</a></li>
<li><a href="https://3dprinting.stackexchange.com/questions/tagged/fans" class="post-tag" title="show questions tagged &#39;fans&#39;" rel="tag">fans</a></li>
</ul>

<p>If you look at the topics there is no distinction which fans are meant, this must be read in the questions.</p>

<p>Should we create separate tags for specific fan applications?</p>

There aren't that many topics labelled with either one of the existing tags, so re-tagging will not be a problem.
Indeed these tags are generic tags and do not cover the range of fans specifically for the application they are used for. There are 3 types of applications for fans in 3D printers,
electronics cooling fans (board/stepper/stepper drivers cooling),
part cooling fans (filament cooling after deposition), and
cold end cooling fans (extruder cold end cooling).
How about making 3 categories and re-tag? (in the same order as the previous list)
electronics-fan
,
part-cool-fan
(or
filament-fan
or
print-fan
), and
extruder-fan
.
Alternatively, we could just use a single tag and let the poster make sure that he explains clearly which fan is used.