Energy & rooms
Empty rooms should not be on full heat. That bill is colossal.
Heat rooms when people are in — not when they are empty. We engineer a connector from whatever PMS you already run — Mews, eviivo, Cloudbeds, SiteMinder, Little Hotelier, Guestline, Booking.com, or another — all the way to the room thermostat. Checkout goes to frost. Last-minute bookings warm up on their own. The breakfast room only heats when guests are staying.
Hotel room heating by occupancy
Tell us the booking system. We engineer the connector to the thermostats — or fit valves if the house is not zoned. Cloud-based — we can get you set up.
Empty rooms off
Empty rooms are not left on guest heat
Frost on checkout
Not last night’s setpoint, forgotten until Monday
Breakfast follows the house
Communal heat only when guests are staying
Last-minute warmup
A last-minute booking still gets a warm room
The connector
Occupancy from your PMS, to the room. We engineer that.
These names are a selection of examples — not a shortlist. We make a connector that fits the PMS you already run and the thermostats, or radiator valves, in the house — including systems not listed. Mews, eviivo, Cloudbeds, SiteMinder, Little Hotelier, Guestline, Booking.com — or another diary. Hive, tado°, or the kit you already have.
Example booking systems
Mews
eviivo
Cloudbeds
SiteMinder
Little Hotelier
Guestline
RoomRaccoon
Clock PMS+
Apaleo- Booking.com
- Airbnb
- Expedia
- Hotels.com
- +Yours — we will connect it
Varlo
We build the feed
Example heating kit
- Hive
- tado°
- RRoom thermostats
- RRadiator valves
- +Yours — we will connect it
Any PMS
If the house already has a booking system, we read occupancy from it. If it is not on this wall, we still engineer the connector.
Upgrade the stats
Rooms already on a thermostat can be upgraded to ones that work digitally and know the temperature — so the diary can drive the setpoint.
Or retrofit valves
If the house is not zoned room by room, radiator valves go on the radiators. Same rule: occupied rooms heat. Empty rooms do not.
Staff and the flow
The diary, through Varlo, to the room.
Reception already knows who is in. We engineer the feed from that diary — Mews, eviivo, Cloudbeds, SiteMinder, or another — to the thermostat. Not a second diary.
VarloThe diary
Whoever you already book on. Who is in, arriving, vacant.
- Varlo
The room
Guest heat when someone is staying. Frost when they leave.
Lands here
Your thermostats
- Hive
- tado°
The room kit
Hive, tado°, room stats we upgrade, or radiator valves we retrofit.
Occupancy drives the heat
01
Diary occupancy
Who is in, arriving, vacant
02
Heat occupied rooms
Empty rooms are not guest heat
03
Frost on checkout
Winter mode keeps pipes safe
04
Breakfast follows house
Off when nobody is staying
Example booking systems
- Mews
- eviivo
- Cloudbeds
- SiteMinder
- Little Hotelier
- Guestline
- RoomRaccoon
- Clock PMS+
- Apaleo
- Booking.com
- Airbnb
- Expedia
- Hotels.com
- +Yours — we will connect it
Example heating kit
- Hive
- tado°
- +Yours — we will connect it
A selection of examples — not a shortlist, and not official partnerships. We make a connector that fits the PMS you already run and the thermostats — or radiator valves — in the house, including systems not listed.
No more of this
What comes off the week
Empty rooms on full heat are one of the largest bills a hotel or inn can cut. Occupancy-led heating is a save-money product first — the time it saves reception is the bonus.
Walking corridors with a thermostat
Empty bedrooms left on a timer
The breakfast room heating an empty house
A forgotten setpoint after checkout
Savings and benefits
What hotel heating gives back
Empty rooms on full heat are one of the largest bills a hotel or inn can cut. Occupancy-led heating is a save-money product first — the time it saves reception is the bonus.
Stop heating vacant bedrooms like a sold night.
Checkout goes to frost — not last night’s setpoint, forgotten until Monday.
The breakfast room stays off when the house is empty.
Reception is not walking corridors with a thermostat for last-minute bookings.
What it does
We engineer a connector from your PMS to the room thermostat. What you use does not matter. Upgrade the stats, or retrofit radiator valves if rooms are not zoned.
The flow
- 01
Occupancy from the diary
Whatever PMS the house already runs — we build the feed that says who is in, arriving, departing, or vacant.
- 02
Heat the rooms that need it
Occupied and arriving rooms stay comfortable. Vacant rooms do not get guest heat.
- 03
Frost on checkout, safe in winter
Guest leaves, room goes to frost. Winter mode keeps pipes and fabric safe.
- 04
Last-minute and three-day warmup
A booking made today still gets a warm room. A stay due in about three days starts coming up on its own.
- 05
Breakfast follows the house
Guests staying: heat a couple of hours before breakfast. Empty house: the communal room stays off.
The software running
Dashboards, lists, alerts — cropped from the live kit
Anonymised as The Oak. Enough chrome to see it is real software. Not every screen, and not your data.
Varlo
Rooms
The Oak · occupancy · Sat 16 Aug
6
In house
2
Arriving
3
Departing
8
Vacant
Oak
Guest in
Willow
Empty
Beech
Today
Yew
Frost next
Ash
Guest in
Elm
Empty
House occupancy
In house, arriving, departing, vacant — the diary that drives the heat.
Varlo
Rooms
The Oak · occupancy
4
Heat on
8
Heat off
1
Holds
- 3Occupied
Oak
14–16 Aug
- 5Vacant
Willow
No booking
- 7Arriving
Beech
Today → 18 Aug
- 8Frost
Yew
Checked out
- 2Hold
Ash
Staff hold
Room panel
Occupied rooms on heat. Vacant rooms off. Holds stay where staff set them.
Varlo
Breakfast
The Oak · house
Guests in tonight
Yes · 6 rooms
Breakfast heat on from 06:15
Empty house
If nobody is staying, the breakfast room stays off in the morning.
Breakfast area
Communal breakfast heat follows whether anyone is staying.
Varlo
Frost mode
Checkout · The Oak
- Frost
Yew
Checked out 10:12
- Frost
Elm
Checked out 10:40
- Heat on
Oak
Still in
Not last night’s guest setpoint, forgotten until Monday.
Checkout to frost
Guest leaves. Room drops to frost. Not a forgotten setpoint.
Varlo
Winter
Empty rooms protected
Winter mode
On · pipes safe
Vacant rooms stay off guest heat, not frozen.
Vacant
Frost floor
Occupied
Guest heat
Safe winter mode
Empty rooms stay off guest heat, not frozen.
Varlo
Warm-up
Booking diary · The Oak
- Coming up now
Beech
Arriving today
- Starts tomorrow
Ash
Due Mon
- Three-day warmup
Willow
Due Thu
Last-minute warmup
Today’s booking comes up now. A stay in three days starts on its own.
Varlo
Thermostats
The Oak · room kit
Hive / tado°
Where the house already has that kit
Room thermostats
Upgrade so they know the temperature
Radiator valves
Retrofit if rooms are not zoned
Stats, valves, the kit you run
Hive, tado°, room stats we upgrade, or radiator valves we retrofit.
Who it is for
Hotels, inns, and B&Bs with rooms on a booking system — Mews, eviivo, Cloudbeds, SiteMinder, Little Hotelier, Guestline, or another. One property or a group. If rooms already have thermostats we can upgrade them so they work digitally and know the temperature. If the house is not zoned room by room, we retrofit radiator valves.
Heating only when people are in
The core rule is occupancy. If a room is empty, it is not treated like a sold night. That is where the bill actually drops.
Works with the kit you already have
Hive, tado°, individual room thermostats, or no room stats at all. Rooms already on a thermostat can be upgraded to ones that work digitally and know the temperature. If the house is not zoned room by room, radiator valves go on the radiators. You do not need to rip out the heating to start saving.
Frost on checkout, safe in winter
When a guest leaves, the room switches to frost mode. A safe winter mode stops rooms getting too cold, so pipes and fabric stay protected without heating empty rooms like a full house.
Last-minute and three-day warmup
A booking made today still gets a warm room. If someone is due in about three days, the system starts bringing the room up automatically — reception is not walking corridors with a thermostat.
Breakfast area follows the house
If nobody is staying, the communal breakfast room does not heat in the morning. If guests are in, it comes on a couple of hours before they come down.
The saving is colossal
This is not a small efficiency tweak. Across a house — and across a group — occupancy heating is one of the clearest money-savers in hospitality.
How the saving works
Occupancy heating in full
Whatever booking system and heating you already run
Mews, eviivo, Cloudbeds, SiteMinder, Little Hotelier, Guestline, RoomRaccoon, Clock PMS+, Booking.com — or a diary we have not named here. We engineer the connector. Some houses are on Hive or tado°. Some have a thermostat in every bedroom that we can upgrade so it knows the temperature. Some have neither — just radiators. Then we retrofit valves. The software is the same idea either way: the booking diary decides, not a guess.
Occupancy is the switch
Hotel occupancy heating means the room is treated as occupied, arriving, departing, or vacant. Heat follows that. Vacant rooms are not left on guest comfort. That is the whole product, and it is why the energy bill moves.
Checkout, frost, and a safe winter
On checkout the room goes to frost mode — not guest heat, not a forgotten setpoint from last night. In winter a safe mode keeps rooms from getting too cold, so you are not choosing between a huge bill and a frozen house.
Last-minute bookings and the next few days
Walk-ins and late online bookings still get a room that is warming up. If there is a booking in about three days, warmup starts on its own. Staff do not need a separate heating ritual for every change in the diary.
Breakfast area heating
Communal breakfast space is often left on a timer as if the house is always full. It is not. If no guests are staying, it stays off in the morning. If people are in, it turns on a couple of hours before breakfast so the room is ready when they come down — and not six hours before.
How it goes in
Stage by stage — not a six-month programme
The enterprise suites sell a long project and a project team. We walk the house, put the first module in, and you see it running. Then it is a monthly direct debit, and the next job waits until you need it.
01
On site or Zoom
Walk the house
The week as it actually runs — till, diary, paperwork, who does what. We say what to put in first.
You getA first module, not a shopping list.
02
A cloud login
Set up the first module
Hotel heating is the start on this page. We set it up around the house you already run.
You getThe software in your week, not a classroom.
03
A trial login
See it for 48 hours
Try it — or browse a system already running in a pub.
You getYou see it running before a monthly debit.
04
Recurring and modular
Go live on monthly direct debit
Pay monthly by UK direct debit for the modules you use. Extra modules are cheaper the more of the suite you run.
You getOne module live. The rest wait.
05
When you need it
Add the next job
Heating, paperwork, payroll, rooms, scans, contractors — the next pain, not the whole catalogue at once.
You getThe week gets lighter, one job at a time.
That is the implement path. Not a project team, and not six months before anyone logs in.
Questions people ask
- How does occupancy-based hotel heating save money?
- Most hotels heat rooms as if they are always sold. They are not. Full heat on an empty bedroom is money leaving the building every night of the year. Driving setpoints from the booking diary — and frost mode on checkout — cuts that waste. The saving is colossal because heating is one of the largest costs in a rooms business.
- Do we need a particular booking system or heating brand?
- No. We engineer a connector from the PMS you already run — Mews, eviivo, Cloudbeds, SiteMinder, Little Hotelier, or another. If rooms already have thermostats, we can upgrade them to digital stats that know the temperature. If the house is not zoned room by room, we retrofit radiator valves. The point is the occupancy rule, not a particular brand of kit.
- Will guests walk into a cold room?
- No. Occupied rooms stay comfortable. Last-minute bookings warm up automatically, and a stay due in about three days starts coming up in advance. The cut is on empty rooms and on checkout — not on guest comfort.
- What happens to the breakfast room when the house is empty?
- It does not heat in the morning. If guests are staying, it comes on a couple of hours before breakfast. That is another quiet saving most inns never look at.
- Is this only for small hotels?
- The same occupancy logic scales. An independent inn, a small group, or a larger chain can all stop paying to heat empty bedrooms.
We’ll set you up
Start with hotel heating
Plans are modular and recurring, billed monthly by UK direct debit. We can get you set up. Extra modules are discounted the more you use.
- Occupancy from any PMS — we engineer the connector
- Upgrade room stats, or retrofit radiator valves
- Frost on checkout, safe in winter
- Breakfast heat only when the house is in