HDD Fan Control

I had previously purchased HDD Fan Control and installed it on an iMac 27 with a replacement (non-Apple) hard drive. It worked fine, but I have now installed a SSD in place of the HDD and HDD Fan Control is no longer activated. I went through the process on their website to be re-notified of the serial number, but although the number came through OK it is not accepted by the activation dialog. This software has only ever been installed on this Mac. I have tried contacting their support by email but have had absolutely no response. My guess is that their activation server is now offline and the lack of a response to my emails suggests that the company is no longer in business. Beware!

Works perfectly on my 2010 iMac running macOS Sierra after replacing the original hard drive with an SSD.

Very difficult to remove.....

I'd give minus 5 stars if I could for this VIRUS app !
I installed this and used for 2 days I got unsatisfied with its inner fan control system and decided to delete it. I clicked the remove in pref pane, however the app was still in application folder, I removed this too!

I discovered that my RIGHT FAN was not working (via another software).
After 2 hours struggling to fix the issue and reseting SMC a dozen times, I discovered that those irresponsible lame developers made a daemon that always runs, and still runs after I uninstalled the app.

I forced quit the daemon but it kept coming back, the devil... I finally found it in lib/lunchdeamons and removed it, but still my Right Fan was broken at 300 RPM...

Then I reset SMC once again and my fan finally came back to life !

35$ ?! I wish the developers would pay me 3500$ for all the work and time I wasted dealing with this VIRUS app!

Screwed! Even after uninstalling this app, HDD fan can not be changed with any other fan control app. If I reinstall this HDD fan control app again, I can tweak it. What is wrong is this.... My HDD fan speed is just fixed, because of this app. I emailed them, just waiting their answers....

$35 bucks for what can be done for free? (Macs Fan Control, smcFanControl and whatever)

Do yourself, and your wallet, a favor. Bypass this software and instead surf to exirion.net to download & install the FREE, and excellent, SSD Fan Control software. Works perfectly fine with HDD's as well. (Just a satisfied end-user of SSD Fan Control; NOT a hater of HDD Fan Control.)

I purchased this app after trying out the demo. The demo seemed to work, but now my fan is back to full speed. I've tried adjusting settings in Preferences (btw i think that interface is well designed), but to no affect. The menu-bar display says my fan should be at 1372 rpm, although the preferences target says it should be at 1100. I can hear my fan running very loud as before installing this software; much much faster than 1372.

The price is now 35$, please fix is in the macupdate listing

$30 to fix a simple problem? Vulture-ware. Do yourself a favor and use a free fan controller.

Works OK, but no apparent way to find out which version you have installed. Neither the PrefPane when viewed in System Preferences or the PrefPane file itself when viewed in the Finder give you any clue what the version is. I have just installed v2.2 but I do not know if this is a different version than I already had installed or not.

Just replaced the Hard Drive in my iMac after it suddenly stopped working. The next day the fan noise was crazy, I thought it was broken. A bit of googling and I realized it was this damn sensor issue. I installed this and the noise stopped near instantly!!! An instant purchase! The price is well worth it to stop that awful noise, and I now know the fan is working correctly again. I did check the settings as I wanted to make sure that the drive would not be overheating and found that the defaults okay for my drive, but a bit of adjustment and I am very happy, the fan hardly ever increases in speed and only seems to do it when the drive is in heavy use. I tested this by copying very large movie files for an hour. Thank you Surtees very much for the great fix.

I learned of your Fan Control software after looking on here [MacUpdate] for fixes for my iMacs fan problem. I replaced my hard drive several months ago, and didn't discover a good resolution until yesterday--I downloaded the trial, it performed as promised (the fan slowed down straight away!), so I purchased the software and it works marvellously! Thanks you.

Free Alternative: http://exirion.net/ssdfanctrl/ Works great. $30 is outrageous.

LMFAO at $30 for a fan control app!

Doesn't work correctly on my late 2009 MacBook Pro running Mac OS X 10.7.3. Shows current speed as -1RPM and tells me that my CPU's temperature is 35C, even though iStatMenu tells me it's 62C. This app seems to be kinda disconnected from reality. :P

Had to replace the drive in a late-2009 iMac (Lion OS) with a consumer – i.e. unformatted – version of the original drive. Hadn't gotten below 6000 rpm for a week, despite trying smcfancontrol etc. This is the ONLY software that went directly to the source of the problem – the loopy drive temp control system in that generation of iMacs – and fixed it. The fans slowed to about 1200 rpm the moment it was installed. (Right now, the HD is at about 52C and 1863 rpm while a full system backup is running.) Yes, $30 is steep, but it's a small price to pay to expel that hideous fan roar from an iMac. If that sound is making you nuts, this app won't disappoint. And you can demo it for an hour first!

Since upgrading to 10.7.3 it doesn't seem as if HDD FanControl is functioning correctly. I have mine set to a minimum fan speed of 1000rpm and set to increase from 50degC, but even with the current cpu temperature at 22degC the fan is running at 1267 rpm. It looks to me as if HDDFC is not actually controlling the fan temperature any more so the question now is what is actually controlling it? Before installing HDDFC the fans ran at full speed but they are not doing that now, so something is limiting the fan speed.

Works brilliantly - very impressed. Only minor comment is that the version that is installed is not mentioned anywhere within the Prefs pane. Furthermore there doesn't appear to be any automatic update facility, either to alert you if there is a newer version or to offer to download and install (such as Sparkle). There certainly isn't any sign of it in the UI. Please remedy this! One star downgraded because of this - would be full five stars if this is fixed.

Awesome !! I've just installed this app and wow....silence! Congratulation to the team, wonderful work !