Honeywell INNCOM holds a clear lead for connecting property management systems to guestroom HVAC controls and deep setback schedules. When selecting systems specifically designed around smart thermostats for vacant room savings, Honeywell Home is the usual answer.
Yes. There are several hotel-specific smart thermostat / energy-management systems that integrate with a PMS so the hotel can distinguish between occupied, vacant-but-booked, and genuinely unrented rooms—and automatically reduce HVAC use.
System
PMS integration
Vacancy/occupancy energy control
Best fit
Honeywell INNCOM
Yes — networked EMS integrates with PMS
Deeper HVAC setbacks for unrented rooms; occupancy, door and window sensing
Yes — supports PMS/BMS integrations; current materials specifically cite Opera and Mews
Occupancy-based setback plus pre-conditioning before arrival
Independent, select-service and retrofit hotels
Telkonet EcoSmart / Rhapsody
Yes — PMS integrations include Opera, Infor, Marriott, Hilton and others
PMS can put rooms into “Unsold” mode; thermostat recovers toward setpoint before arrival
Hotels wanting aggressive vacancy savings
Siemens / Interel EOS 2
Yes — connects room controls to PMS/Desigo
Multi-stage setback when guests leave; can incorporate door, window and motion sensing
Select-service/full-service and branded hotels
Schneider Electric Guest Room Management
Yes — PMS, BMS and door-lock integration
Occupancy management plus centralized room/HVAC control
Larger, integrated hotel automation projects
Universal Electronics TBH300 EMS
Yes — can connect to PMS
Occupancy and door/window sensing adjusts HVAC when rooms are unoccupied
Cost-conscious / retrofit deployments
1. Honeywell INNCOM — probably the strongest enterprise option
Honeywell's INNCOM platform is specifically designed for hotel guest rooms. Its networked EMS can integrate with the PMS to apply deeper temperature setbacks to unrented rooms, rather than treating every vacant room the same.
Honeywell also has unusually good real-world evidence: at the Washington Hilton, its study compared standalone versus PMS-integrated INNCOM systems, with the networked system receiving rented/unrented status from the hotel's PMS. buildings.honeywell.com Honeywell says networked hotel EMS deployments can produce roughly 25–40% energy savings, though actual results depend heavily on the property.
Verdant makes occupancy-sensing hotel thermostats and an energy-management platform. Its current documentation says the system integrates with PMS software and can use reservation/check-out information to put rooms into energy-saving setback and then pre-condition them before the next guest arrives.
Verdant currently highlights Opera and Mews integrations and says its API can support other PMS platforms. verdant.copeland.com It also claims an average 45% reduction in guestroom HVAC runtime, translating to as much as 20% overall energy-bill savings; those figures are vendor-reported and will vary by property.
3. Telkonet — particularly good at PMS-driven “unsold” rooms
Telkonet has a particularly relevant approach: its PMS integration can put a room into an “Unsold” profile, allowing a more aggressive temperature setback than simply detecting that a guest has temporarily left. When the room becomes sold, the thermostat begins recovering toward the guest setpoint before arrival.
Telkonet lists PMS integrations including Oracle Opera, Infor, Marriott and Hilton, among others. telkonet.com Its Rhapsody platform uses an integration server for PMS/BMS/door-lock integrations.
Siemens's Interel EOS 2 combines a smart thermostat, occupancy sensing and IoT connectivity. It can reduce HVAC runtime when guests leave and progressively apply deeper setbacks. Siemens specifically describes connectivity back to the PMS and Desigo building-management environment.
It's more than a thermostat: the system can also incorporate door/window/motion sensors, lighting and guest-service functions. Siemens says INTEREL solutions are deployed across hospitality properties and lists brands including Accor, Marriott, IHG and Hyatt among approved/preferred users of its platform.
Schneider Electric takes a more comprehensive GRMS (Guest Room Management System) approach. Its hotel solution combines HVAC room controllers with occupancy management and can integrate with PMS, BMS and door-lock systems.
This makes more sense for a new-build or major renovation where you want HVAC, lighting, curtains, DND/MUR, locks and room automation managed as one system rather than simply replacing thermostats.
PMS + occupancy:
Guest checks out → PMS says room is no longer sold → deeper setback → new reservation approaches → room automatically pre-conditions → guest arrives to a comfortable room.
That's why PMS integration can produce additional savings beyond an ordinary occupancy-sensing thermostat. Telkonet, for example, reports that PMS integration has produced an additional 5–15% savings, depending on climate and occupancy.
My shortlist
If you're evaluating these for an actual hotel project, I'd narrow it to:
Verdant — very compelling for straightforward retrofit projects and PMS-connected HVAC savings.
Telkonet — particularly attractive if the key objective is aggressive control of unsold/vacant inventory.
Siemens/Interel — strongest if you're building a broader smart-room/GRMS ecosystem.
Schneider Electric — best considered as part of a larger BMS/GRMS project.
One important procurement question: don't just ask vendors whether they “integrate with the PMS.” Ask which PMS, whether the integration is native or API-based, what room-status events are exchanged, and whether check-out/check-in can automatically trigger different HVAC setback and recovery profiles. That's what determines whether you actually get the vacancy-energy savings you're after.
The industry leaders providing enterprise-grade smart thermostat systems with robust PMS integrations include:
Honeywell INNCOM Energy Management System (EMS)
Overview: The gold standard for midscale to luxury hospitality brands (such as Marriott and Hilton properties). INNCOM integrates deeply via network gateways with major hotel PMS platforms.
Overview: Known for high-efficiency retrofits and compatibility with a vast range of PTAC and heat pump units. It runs on an encrypted mesh network and links easily via an integration server to top-tier PMS platforms (like Oracle Opera, Infor, and innQuest).
Overview: A leading plug-and-play and mesh-networked solution popular in select-service and extended-stay hotels. Verdant features a robust API built explicitly for reliable PMS integrations and remote web-based management.
Yes. Hotel HVAC/guest-room energy management systems (EMS/GRMS) can integrate with a hotel’s PMS and automatically reduce HVAC operation in vacant or unrented rooms. This is an established category, not just an emerging concept.
How it works
A typical setup connects:
PMS → room-status/occupancy data → guest-room controller → thermostat/HVAC
For example:
Guest checks out → PMS sends the room to “unoccupied.”
HVAC automatically moves to an energy-saving temperature setback rather than maintaining guest comfort temperature.
Guest checks in / arrival approaches → system restores comfort settings or pre-conditions the room.
Motion/door/occupancy sensors can provide a second layer of confirmation, so a rented room isn't treated as empty just because the guest is out for dinner.
Honeywell specifically describes its INNCOM networked EMS as integrating with the PMS to apply deeper setbacks in unrented rooms.
Some systems worth looking at
System
PMS integration
Vacancy/occupancy HVAC control
Notes
Honeywell INNCOM
Yes
Yes
Mature hospitality-focused platform; integrates PMS, sensors and room controls
Verdant
Yes
Yes
Specifically supports PMS integrations including Opera, and
Honeywell reports 25–40% guestroom HVAC energy savings for its networked PMS-integrated EMS under certain hotel conditions. Its Washington Hilton case study also specifically compared PMS-integrated rooms against standalone EMS rooms.
Verdant is particularly interesting if you're looking for a retrofit-oriented solution: its documentation says its PMS integration can use checkout information to immediately put a room into setback and then pre-condition it before the next guest arrives. It lists integrations with Opera, MEWS and HotelKey.
The important distinction
There are actually two different energy-saving strategies:
1. Unrented room control
The PMS knows nobody has booked the room → HVAC goes into a deeper setback.
2. Occupied-but-currently-empty room control
The room is booked, but the guest is at the pool, restaurant, etc. → occupancy/door/motion sensing puts HVAC into a temporary setback.
The best systems combine both. Honeywell, for example, describes using PMS room-rental status together with occupancy and door-status information.
That distinction can make a substantial difference because a room might be occupied from the PMS's perspective for several days while physically empty for 6–12 hours a day.
If you're evaluating this for a hotel
I'd look for a system that supports:
Two-way PMS integration, rather than just exporting data
Check-in/check-out status
Reservation/arrival information for pre-conditioning
Integration with existing fan-coil units, PTACs, VRF or central HVAC
BACnet/Modbus/API capability if you already have a BMS
Room-by-room energy/runtime reporting
Manual override for engineering/housekeeping
Integration with the particular PMS you're using
If you tell me the hotel size (number of rooms), PMS (e.g. Opera, Mews, Cloudbeds, Maestro), and HVAC type (PTAC, fan-coil, VRF, etc.), I can research the best 5–10 systems that are actually compatible, including approximate costs, retrofit requirements, and estimated payback.
Rather than relying purely on standard room thermostats, these integrated systems maximize savings by differentiating between an unoccupied room (a guest is just out walking or sleeping) and an unsold/vacant room (no guest is checked in).[](https://.com/2022/11/22/property-management-system-integration/)[[2]()]()
The top thermostat and energy management systems built for hotel PMS integration include:
Honeywell INNCOM
Overview: Widely considered the gold standard for enterprise and luxury hospitality. INNCOM uses a robust network gateway and the FastPack API to tie directly into major hotel PMS platforms (like Oracle Opera).
Verify PMS Support: Confirm that the vendor has a pre-built integration or certified API connector for your specific property management software (e.g., Oracle Opera, Cloudbeds, Infor).[](https://telkonet.com/ecosystems/product-integrations/)
Layer Your Sensors: The highest-performing setups don't just rely on the PMS check-out signal; they combine with to catch mid-stay vacancies (e.g., a guest out exploring the city).[]()
If you'd like to narrow this down, let me know:
What type of HVAC units your hotel uses (PTAC, fan coil, mini-split, etc.)
Which Property Management System (PMS) you currently run
I can help identify which of these systems offers the smoothest native integration for your property.
Best hotel thermostat systems with PMS occupancy integration
If your goal is to reduce hotel energy costs by using live Property Management System (PMS) data to control guestroom heating and air conditioning, I would start by evaluating Honeywell INNCOM, Verdant by Copeland, and Telkonet.
The key distinction is that you don't just want a smart thermostat that detects motion. You want a hotel energy management system (EMS) that connects room status from your PMS to HVAC controls and automatically changes temperature setpoints when a room is vacant, checked out, or approaching a guest's arrival.
For example, a properly configured system can:
At checkout: Move the room into an energy-saving temperature setback.
While vacant: Use occupancy sensors and door status to avoid unnecessary heating or cooling.
Before check-in: Pre-condition the room so the guest arrives to a comfortable temperature.
Across the property: Give engineering staff centralized controls, alarms, and energy performance reporting.
Honeywell documents this type of PMS-integrated control in its INNCOM platform, while Verdant explicitly advertises PMS connections, including integrations with OPERA and Mews.
In-Room Occupancy Handling: When the room is sold but temporarily empty, the system uses internal motion, thermal, or door-contact sensors to enact minor setbacks, ensuring energy isn't wasted on an empty room while avoiding long recovery times when the guest walks back in.[](https://esglobal.us/blog/hotel-occupancy-based-hvac-control)[2](https://roomwisepro.com/)
Overview: Telkonet’s platform (featuring hardware like the EcoTouch+ and EcoInsight+ ) is renowned for rapid return on investment and broad out-of-the-box compatibility with hospitality ecosystems.
Overview: Highly popular for select-service and mid-scale properties due to its straightforward installation, cloud management, and powerful online portal.
Overview: Ideal for properties looking for lighter, cloud-managed or retrofit solutions (especially for mini-split heat pumps or standalone Wi-Fi thermostats).
Best for full-service hotels, resorts, and larger properties that want comprehensive guestroom automation.
PMS-connected occupied/unoccupied room control.
Motion and door sensing, with deeper setbacks for unrented rooms.
Centralized monitoring, alarms, analytics, and integration with lighting and door locks.
Honeywell reports 25–40% guestroom HVAC energy savings for its networked PMS-integrated system, based on HVAC runtime comparisons.
Website:
2. Verdant Hotel Energy Management System
(Best for retrofits)
Particularly attractive for hotels with PTACs, packaged HVAC equipment, or mixed room configurations.
PMS integration through its API, including advertised support for OPERA, Mews, and HotelKey.
Occupancy sensing and automatic temperature setbacks.
Centralized controls, setpoint limits, and dynamic recovery to prepare rooms before arrivals.
Verdant advertises up to 45% lower guestroom HVAC runtime and up to 20% savings on the overall hotel energy bill. These are vendor-reported figures, not guaranteed project results.
Website:
3. Telkonet EcoSmart
Best for properties looking for room-by-room energy management and broad third-party integration options.
PMS integration can mark rooms as sold or unsold and change their HVAC operating modes.
EcoCentral provides remote monitoring, reports, alarms, and multi-property visibility.
Supports integration with building management systems (BMS), door locks, and other room technologies.
Telkonet's integration documentation specifically describes using PMS check-in and check-out status to initiate energy-saving temperature drift and restore comfort before arrival.
Website:
4. Telkonet Rhapsody
Best for newer projects or retrofits where wireless connectivity and flexible integrations matter.
Integrates with PMS, BMS, door locks, and other third-party devices.
Uses Wi-Fi, Bluetooth, and Zigbee technologies.
Offers remote management and multi-property analytics.
Worth comparing with EcoSmart if you're planning a new installation or want to minimize additional networking work. Confirm the exact PMS integration and hardware requirements for your property.
Website:
How they compare
Capability
INNCOM
Verdant
EcoSmart
Rhapsody
PMS-based room status
Yes
Yes
Yes
Yes; verify interface
Motion/occupancy sensing
Yes
Yes
Yes
Yes, depending on configuration
Pre-arrival HVAC recovery
Configurable
Yes
Configurable
Configurable
Centralized monitoring
Yes
Yes
Yes
Yes
Best fit
Full-service and luxury
Retrofit projects
Broad room-level integration
Flexible wireless projects
Comparison based on manufacturers' published capabilities. Exact functionality varies by thermostat model, software version, integration, and installation.
What energy savings should you expect?
The distinction between HVAC runtime savings and whole-building energy savings is important.
Guestroom HVAC
25–45%
A reasonable range to investigate in vendor claims for networked or occupancy-based systems; actual results vary.
Total hotel energy bill
Potentially lower, but property-dependent
Savings depend on HVAC's share of consumption, vacancy, climate, tariffs, and existing controls. Guestroom HVAC savings do not translate directly into the same percentage reduction in the total bill.
Honeywell's published Washington Hilton case study is useful evidence beyond a general marketing estimate: it reported that PMS-networked INNCOM guestrooms used 41% less HVAC energy than rooms with a standalone energy management system in a six-month metered analysis.
What I'd require before purchasing
The most important thing is to validate the actual integration, not simply the thermostat's smart features.
Confirm your PMS connection. Ask for a live integration with your exact PMS and version, and whether it uses a certified interface, API, or middleware.
Verify room-status events. Check-in, checkout, room assignment, vacant-but-reserved status, and maintenance/out-of-order status should trigger the intended HVAC modes.
Require pre-conditioning. The system should restore comfort based on expected arrival and room recovery time, not just switch to full cooling at check-in.
Check the HVAC hardware. Verify compatibility with PTACs, fan coils, heat pumps, or VRF units, as applicable, including voltage and wiring.
Measure actual savings. Request room-level runtime data, a baseline, a pilot, and a projected payback using your utility rates.
Protect guest comfort. Establish safe temperature limits, occupancy-sensor overrides, and sensible setback rules for long vacancies.
My recommendation
Choose Honeywell INNCOM if you want a comprehensive hotel room automation and energy management platform.
Choose Verdant if you want to retrofit existing guestroom HVAC equipment and automate PMS-based setbacks.
Choose Telkonet EcoSmart if third-party integrations and centralized room-level reporting are major priorities.
To narrow this down to the best system for your hotel, I have one key question:
Which PMS does your property use?
For example, Oracle OPERA, Mews, Cloudbeds, StayNTouch, Maestro, or another system. If you also know whether your rooms use PTACs, fan coils, or VRF, I can make the shortlist more specific.
