New v1.0 hardware shipping to EU beta cohort this summer. Secure your spot
Runs on occupancy — nothing to connect

The smart property gateway built for short-term rentals.

Cut your AC bills 17–30 % automatically. Savings measured, not estimated. Occupancy-driven automation and remote control of any AC from anywhere — in one plug-and-play device that pays for itself in a single summer.

Order Cerloq One — €99 See how it works
30-day money-back guarantee CE certified EU shipping in 3–5 days 2-year warranty

Works with any IR remote-controlled AC — 200+ models across 39 brands built in

Daikin Mitsubishi LG Samsung Panasonic Gree
Capabilities

Everything Cerloq does — at a glance.

Tap any icon to see what it covers. Five capabilities, one device, no extra wiring.

Occupancy-driven AC, every model.

Pick your AC from 200+ pre-built models, or capture any remote in one press. Then set the rules — Cerloq runs them from the room’s own occupancy, sensed on-device. It only ever reduces: eco, then off. Comfort stays on the guest’s remote.

  • Room confirmed empty: eco first, then off — roughly 40 minutes after the door closes, an abandoned AC is off
  • Your app is a five-button remote — guest lands in 40 minutes? One tap pre-cools the apartment
  • Vacancy strategy your call: eco-then-off, off-only, or disabled
  • 200+ pre-built AC models + capture-any-remote fallback
See it in the product →
How it works

Three steps to running your AC like a pro.

From unboxing to first savings, Cerloq is designed for a cleaner — or a busy host — to set up in five minutes per unit.

1

Plug in the device

USB-C cable into any wall socket. Scan the QR on the unit with the Cerloq app and it connects over Bluetooth, then Wi-Fi — claimed to your account in a couple of minutes.

~2 min
2

Set up your AC

Pick your unit from the built-in library of 200+ models across 39 brands — five comfort presets install in seconds, no remote required. If your model isn't listed, point any remote at Cerloq and press OFF; capture-and-replay covers the long tail.

~1 min
3

Set your house rules

Pick a timezone, quiet hours, and your vacancy strategy — eco-then-off, off-only, or disabled. Cooling-season months cover southern-hemisphere and tropical markets. The automation starts immediately.

~1 min
Three ways Cerloq pays for itself

Built for the short-term rental business model.

Every other smart-home device monitors. Cerloq acts. The difference shows up in your electricity bill, your equipment lifespan, and your guest reviews.

17–30% HVAC reduction

Energy savings you can verify.

An empty room stops burning AC hours. Peer-reviewed studies report 17–30 % HVAC reduction — up to €100 / month per unit in peak Mediterranean summer (estimated).

  • Driven by on-device occupancy — nothing to connect
  • Avoided runtime measured hour by hour, under-claimed by design
  • ROI tightens monthly against your bill
See the research →
AVOIDED AC RUNTIME · THIS MONTH 62 h ≈ €84 estimated · clamp add-on measures exact kWh M A M J J A S
12 → 6 years prevented

AC longevity, not keycard cycling.

Keycards hard-cycle compressors and halve AC lifespan. Cerloq modulates through IR — same savings, no equipment wear. ~€500 per unit in deferred replacements.

  • Soft on/off through IR, never a relay
  • Service log for warranty + handover
See the product →
KEYCARD CYCLING 6 yrs AC lifespan damage compounds WITH CERLOQ 12 yrs AC lifespan soft IR cycling
4 devices → 1

Two superpowers. Four devices replaced.

Occupancy-driven savings you can verify and full remote control of any AC from anywhere ship as standard — no other single-purpose box in this comparison can match either. On top of that: AC control, savings tracking, antitheft, smoke relay (roadmap) — at the price of one.

  • 5-minute setup per unit
  • No light, no sound — guests don’t notice it
  • EU-only data, GDPR by design
Ten features per device →
4 DEVICES 1 DEVICE AC controller €199 Energy monitor €79 Antitheft €129 Smoke listener €89 CERLOQ ONE €99 · ALL OF IT SUPERPOWERS ✓ Occupancy-driven savings ✓ Any AC, remote from anywhere + ALSO INSIDE ✓ AC control ✓ Savings tracking ✓ Antitheft ✓ Smoke relay (roadmap)
17–30%
HVAC reduction documented in peer-reviewed field studies of occupancy-aware control
€80–250
annualised savings per Greek STR unit. Net positive from year two onward.
~40 min
from the door closing to an abandoned AC switched off — measured on-device, never rushed into false triggers
~50%
of guest hours after check-in have AC running with nobody in the room (SensorFlow study, n=64,000 room-nights)

Savings figures are estimates based on peer-reviewed studies. Actual savings vary by climate, occupancy patterns, and AC efficiency. See the methodology.

The occupancy advantage

Cerloq follows the room, not the calendar.

The radar tells the device whether the room is genuinely in use — computed on-device, shared with no one. That verdict is all the automation needs.

  1. 1

    Room occupied

    The device holds back completely. AC runs exactly as the guest set it on their own remote.

  2. 2

    Confirmed empty

    The sensor takes ~10 minutes to be sure the room is empty. Then the AC eases back to eco — ~15 minutes later, once the device can tell the AC is actually running.

  3. 3

    Still empty

    After ~30 more minutes the AC switches off. Roughly 40 minutes after the door closes, an abandoned AC is off — and every avoided hour is logged.

  4. 4

    Guest returns

    The device stands down. It never switches the AC on or toward comfort automatically — comfort belongs to the guest and their remote.

  5. 5

    Quiet hours

    Set any window — or none — and the device never acts during it. Sleeping guests are never woken by a changing AC.

1 2 3 4 5 ROOM-STATE CYCLE
Built for every size of operation

Pick your profile — see what Cerloq does for you.

The same hardware. Different value depending on how many units you run and what hurts most.

€80–250 / unit / yr

You handle the bookings — Cerloq handles the bill.

Occupancy-driven automation cuts HVAC 17–30 %. Antitheft only runs when you arm it. One tap from anywhere pre-cools before arrivals.

  • Free Starter tier, forever
  • Avoided AC hours, measured and logged
  • Five-preset remote control from anywhere
  • Replaces a smart AC controller — and proves what it saved
See pricing
YOUR APARTMENT · ATHENS 62 h avoided AC runtime · ≈ €84 estimated 71 % of summer budget recovered Hardware paid back in: 28 days
Customer interviews

What property managers are asking for.

Themes from 50 short-term-rental conversations (10 of them property managers running 10+ units). Composite quotes — verbatim testimonials added once our beta cohort ships.

"

We run apartments in Athens with a smart AC controller on every wall — and still no idea what it actually saves. One device per unit that switches off abandoned AC and proves it, hour by hour, would save my support team hours every week.

A
Property manager — Athens
24 units · interviewed Q1 2026
Pricing

Hardware €99. Software your choice.

Free Starter tier covers core automation. Pro and Property Manager add ROI tracking and multi-property tooling. Cancel anytime — hardware stays yours.

Starter
Free / month

AC control from anywhere, occupancy automation, antitheft. Forever.

Pro
€10 / mo per unit

Everything in Starter + savings dashboard, bill calibration, 30-day history.

Property Manager
€8 / mo per unit · 10+

Everything in Pro + multi-property dashboard, cleaning-crew audit (roadmap), API access, hardware discount.

See full pricing + ROI calculator →

Order Cerloq One today. Save money this summer.

€99 hardware. €10/month subscription (free tier available). 30-day money-back guarantee. Ships within 7 business days across the EU.

View pricing Order now