Smart Thermostats for Hotel Guest Rooms
If you’ve ever walked into a hotel room and felt the air conditioning already running full blast before you’ve even dropped your bag – or walked past a room being serviced with the heater going in an empty room – you’ve seen exactly the problem hotel thermostats are built to solve. Rooms sit empty for hours at a time, but a lot of hotels are still paying to heat or cool them as if someone’s in there the whole day.
Smart thermostats are one of the simplest, most effective fixes in the entire GRMS toolkit – and one of the first things worth getting right.
Table of Contents
What a Smart Hotel Thermostat Actually Does
At the simple end, a thermostat just lets a guest set a temperature. A smart, occupancy-based thermostat goes further – it knows whether the room is occupied, and adjusts accordingly. When a guest heads out for the day, HVAC winds back to a lower-energy setback setting. When they’re on their way back – picked up through door access, key card activity, or presence sensing, depending on the system – it recovers to full comfort before they walk in.
The guest never has to think about any of this. They set their preferred temperature once, and the system handles the rest quietly in the background. Nobody’s asking them to remember to turn the aircon off before they leave for the day.
Some systems go a layer further again, using genuine presence detection (rather than just door or key card signals) to fine-tune exactly when a room is truly empty versus just quiet, which sharpens the savings without any guest-facing trade-off.
Why This Matters More Than It Looks Like It Should
Guest rooms are typically one of the largest single contributors to a hotel’s overall energy use, and HVAC is usually the biggest piece of that within the room itself. Multiply a few wasted hours of full-comfort heating or cooling across every room, every day, and it adds up to a genuinely significant chunk of a property’s energy bill – all for comfort nobody was actually using.
It’s also one of the easiest wins to make because it doesn’t touch the guest experience at all. Nobody notices smart thermostat control working well – the room is exactly as comfortable as it would’ve been anyway. That’s different to, say, asking guests to change behaviour, which is always a harder sell in hospitality.
How It Fits Into a Wider GRMS
Thermostats rarely operate completely on their own – they’re usually one part of a broader Guest Room Management System, working alongside lighting control and sometimes curtains or window shading, all responding to the same occupancy signals. A room going into “away” mode might wind back HVAC, dim or switch off lighting, and adjust shading, all from the one trigger.
That’s worth knowing if you’re currently looking at thermostats in isolation – the bigger opportunity is usually treating them as one piece of a coordinated system rather than a standalone device, since a lot of the underlying occupancy logic (and the wiring and controls to support it) is shared across all of them anyway.
Compatibility With Existing HVAC
A common concern with retrofitting existing hotels is whether this means ripping out HVAC plant. Generally, no – smart thermostats and the GRMS they sit within are built to integrate with the HVAC systems already in place, whether that’s individual room units, a central plant, or something in between. The retrofit is usually about adding smarter control at the room level, not replacing what’s already there.
Thermostats and NABERS
If you’re tracking toward a NABERS rating for hotels [LINK: mysmart.com.au/solutions/nabers-for-hotels/], guest room HVAC is one of the areas assessors pay close attention to, given how much of a property’s overall energy use it typically represents. Occupancy-based thermostats directly reduce that measured energy use, which is exactly what a NABERS rating is based on – and the data they generate (occupancy, run-time) often feeds usefully into that reporting too, particularly once it’s pulled together with the rest of the property through a platform like BuildIQ [LINK: mysmart.com.au/solutions/hotel-energy-management/].
Thermostat and Climate Control Brands We Work With
Because mySmart is a product-agnostic integrator, we’re not locked into pushing one thermostat platform regardless of whether it’s the right fit. In practice, that means we work across most of the major GRMS and climate control brands used in Australian hospitality, and the right one usually comes down to the property rather than a fixed preference:
- Interel – widely specified by major international hotel brands, and a strong fit for both new builds and retrofit projects where a proven, established platform matters.
- Honeywell InnCom – a long-standing presence in the Australian hotel market, with a broad range of control modules for properties wanting flexibility across different room types.
- Schneider Electric – built around a BMS backbone, which suits properties wanting guest room climate control tied closely into wider building management.
- Eelectron (KNX) – climate control as part of a broader KNX-based system, with strong support for room sensors (temperature, CO2) alongside HVAC and window shading control.
- AuVerte – a flexible option for properties wanting strong energy management alongside guest room comfort.
- Trustech – a newer entrant to the Australian market, notable for its metering capabilities alongside guest room control.
Because we’re not tied to any one of these, we can match the platform to what the property actually needs – budget, existing infrastructure, whether it’s new build or retrofit, and how the hotel group’s other properties are set up – rather than fitting the hotel around whichever brand we happen to sell.
Getting Started
Every property’s starting point is different – new build versus retrofit, the HVAC already in place, which brand fits best, and how far you want to go beyond thermostats into full GRMS. Worth a conversation before committing to anything specific.
Frequently Asked Questions
How do hotel thermostats know when a guest room is occupied?
It varies by system – some rely on door position or key card activity as a proxy for occupancy, while others use genuine presence detection (PIR or similar sensors) to sense whether someone’s actually in the room. More sophisticated systems combine both for a more accurate picture.
Will guests notice the thermostat adjusting on its own?
They shouldn’t. The system is designed to recover to full comfort before or as the guest returns, so the room feels exactly as comfortable as it would with a thermostat running constantly – the difference is what happens while they’re out.
Can smart thermostats be retrofitted into an existing hotel?
Yes, in most cases. They’re generally designed to work with the HVAC systems already installed, whether that’s packaged units, VRF, or a central plant, so a retrofit is usually about adding control rather than replacing hardware.
Do smart thermostats work with all HVAC types?
Different HVAC types need different approaches to integration, but the solutions we work with are built to be compatible across the common systems used in Australian hotels, regardless of the setup or age of the property.
Are smart thermostats only useful as part of a full GRMS, or can they stand alone?
They can stand alone, but the bigger value usually comes from combining them with lighting and other guest room controls under one system, since a lot of the underlying occupancy detection and control logic is shared.
How do smart thermostats help with a NABERS rating?
NABERS ratings are based on measured energy performance, and guest room HVAC is typically one of the largest contributors to that. Reducing HVAC use in empty rooms through occupancy-based thermostats directly improves the measured performance a NABERS rating reflects.
Do smart thermostats save energy without affecting guest comfort?
That’s the whole point of them – the system only winds back HVAC while a room is genuinely unoccupied, and recovers comfort settings before or as a guest returns, so there’s no noticeable trade-off in comfort.
Which thermostat brand is best for my hotel?
It depends on the property – factors like whether it’s a new build or retrofit, what’s already installed, and how the hotel group’s other properties are set up all play into it. As a product-agnostic integrator, we assess each property against brands like Interel, Honeywell InnCom, Schneider Electric, Eelectron (KNX), AuVerte, and Trustech, and recommend whichever fits best rather than defaulting to one option.