Hotel room too hot or too cold? Hack the air conditioning controller!

By Chris Chamberlin, March 7 2016

TRAVEL TIP | Ever tried to make your hotel room warmer or cooler, only to find that the air conditioner will scroll up or down by only a few degrees – or, worse, is locked in place?

Blame the hotel, not the aircon. Many hotels, especially larger chains, deliberately restrict the range of the thermostat so that it's easier to manage air conditioning for the entire building and in turn lower their electricity bill.

But you don't need to sit there shivering or sweating.

Most hotel air conditioning control units have a secret program mode which with a few deft keystrokes lets you over-ride such limits and make your room as cool or as warm as you like.

Honeywell Incomm thermostat

Frequently appearing in Hyatt and Starwood hotels across the globe, Honeywell’s simplistic Incomm thermostats have an easily-activated ‘VIP mode’ which overrides the usual temperature limits.

Press and hold the ‘display’ key, then tap ‘off/auto’, ‘up’ and then release the ‘display’ key. Your room will now be in VIP mode for the next 72 hours…

… which not only unlocks a broader range of temperatures but also deactivates the system’s motion sensor: keeping your room at your chosen temperature while sleeping or ducking out for a brief moment, allowing you to wake up or return to a perfectly chilled or heated room.

Trane thermostat

Often found in Accor hotels, the digital Trane thermostat is more complex but almost begs to be tweaked. Start by holding down the central button labelled ‘override’…

… then once you see ‘PswrdSet 0’, keep pressing the ‘override’ key until you see ‘cool min’ – or ‘heat max’ as the conditions warrant…

… and use the arrow keys to adjust the temperature downward or upward:

Once you’re happy, leave the buttons alone for a moment and the system exits back to the main screen where you can select your newly-unlocked temperature – but note that it won’t automatically change back to the original setting, so you might consider reverting this before check-out.

Lonix thermostat

Also used globally is the Lonix thermostat, which looks just like this:

You’ll get to the secret menu by simultaneously depressing the up and down keys…

… then tap either directional key until you see ‘CH-C’:

Press ‘M’ (second from the left), and you can again tweak the lowest available temperature:

In this instance, the hotel was either generous or we’d been beaten to the punch by a previous guest, as setting changes on this type of thermostat are also retained until manually adjusted again.

It should go without saying, but all other settings on hotel thermostats should be left untouched: tinkering with options you’re unfamiliar with has the potential to damage or disable the system, which you’ll have a hard time explaining to hotel management or your travel/liability insurer.

More travel tips from the AusBT team:

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Chris Chamberlin

Chris Chamberlin is the Associate Editor of Executive Traveller and lives by the motto that a journey of a thousand miles begins with a single step, a great latte, a theatre ticket and a glass of wine!

riley

riley

Virgin Australia - Velocity Rewards

19 Mar 2014

Total posts 574

Any cheats for the automatic mini bar? ;)

nathanjordan

nathanjordan

Virgin Australia - Velocity Rewards

21 Aug 2013

Total posts 130

OMG I nearly had a coronary just over a week ago at the W New York when I merely picked several items up to look at them, then put them back, followed by an eye-opening read of the mini-bar 'menu' to realize that it was automatically billed! An urgent call to 'whatever, whenever' resolved that, however!

henrus

henrus

Qantas - Qantas Frequent Flyer

23 Oct 2013

Total posts 714

Move the Hangover comes to mind with a simple glass of water doing the trick.

Doubleplatinum Banned

Doubleplatinum Banned

Qantas - Qantas Frequent Flyer Platinum

07 Feb 2013

Total posts 558

Rookie error

moa999

moa999

Qantas - Qantas Frequent Flyer

02 Jul 2011

Total posts 1378

Sadly i think there are many more models than just these three - indeed I don't recognise any of them.

I find most US hotels are set way too cold for my liking, but normally OK elsewhere.

paperysomething

paperysomething

05 Feb 2015

Total posts 17

Sitting at Hyatt Canberra and looked up to see the thermostat is indeed a "Honeywell Incomm". Tried the instructions, and the lowest temperature is now 15.5 degrees (from 18.5).

Don't think I'll need it that cold though.

triumph8

triumph8

Qantas - Qantas Frequent Flyer

05 Oct 2015

Total posts 43

this is the most useful article ever THANKS!!!

kimshep

kimshep

Qantas - Qantas Frequent Flyer

11 Oct 2014

Total posts 492

Got to agree - and also one of the most 'unexpected'.

Thanks Chris - I've stored this on my tablet for future reference and use. Indeed, a clever article!

lind26

lind26

24 Apr 2014

Total posts 269

I agree. I find the Chinese hotels are really bad for limiting Air Con minimum temperature. I find I get dehydrated and a headache from the heat!

petercr

petercr

23 Sep 2015

Total posts 45

As someone who works in the HVAC industry and has to provide technical support, DON'T play with the room thermostat. Setting the temperature much lower isn't going to make the room get colder or warmer any quicker no matter how much you poke around. 

sgb

sgb

Emirates Airlines - Skywards

30 Nov 2015

Total posts 745

This is an oldie but a goodie, Brilliant.

Covvers

Covvers

Qantas - Qantas Frequent Flyer

19 Jan 2018

Total posts 96

Just saw this for a first time. Absolute game changer. Brilliant. Thanks Chris - you’re a credit to your profession.

Gigi Lenoir

Gigi Lenoir

21 Apr 2018

Total posts 1

Anyone know how to deal with the Daikin aircon at Sheraton hotels? My room is a sauna! I hate having to put up with someone else's limitations on my comfort!

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