HOTARUBI SYSTEMS
Technician attaching a sensor to a ventilation unit

SERVICE 02 OF 03

Notice the drift before it becomes downtime

A five-week setup that watches HVAC and ventilation equipment and raises a note before a fault reaches your occupants.

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THE PROMISE

A monitoring step your contractor can act on early

Once configured, the setup watches for the gradual changes — rising run times, drifting temperature differentials, more frequent cycling — that tend to appear before equipment fails, and puts a note in front of your maintenance contractor while there's still time to respond.

THE PROBLEM

Faults are usually first noticed by an occupant

In many buildings, the first sign of a failing unit is a complaint about a stuffy room or an unusually loud vent — well after the change that caused it began. By then, a repair that could have been scheduled becomes an emergency call.

THE SOLUTION

Sensors that watch for the pattern, not just the failure

Sensors are connected to air conditioning and ventilation equipment, and thresholds are configured for the operating signals known to precede common faults. When a threshold is crossed, a note is raised for your maintenance contractor — the finding is advisory, and no equipment is adjusted automatically.

THE EXPERIENCE

What the five weeks look like

WEEK 1–2

Sensors connected

Sensors are attached to the equipment being monitored, with minimal disruption to operation.

WEEK 3

Thresholds set

Warning thresholds are configured based on your equipment's baseline behavior.

WEEK 4–5

Monitoring confirmed

The setup runs and is checked against real readings before handover.

ONGOING

Quarterly summary

A monthly summary is provided for the first quarter after setup.

THE INVESTMENT

¥29,000

Covers sensor connection, threshold configuration, and reporting for the first quarter of operation.

What's included

  • — Sensor connection to HVAC and ventilation equipment
  • — Threshold configuration based on your building's baseline
  • — Monthly summary for the first quarter

THE PROOF

How the monitoring is judged to work

Thresholds are calibrated to your equipment's own baseline rather than a generic assumption, and each note raised includes the reading that triggered it, so your contractor can judge it directly rather than take it on faith. The setup itself takes five weeks; results depend on how the equipment behaves afterward.

THE GUARANTEE

A conversation before any sensor is installed

We'll walk through which units are candidates for monitoring and what access is required before agreeing to proceed, so there are no surprises once the setup begins.

NEXT STEPS

Start with a list of your equipment

Send a note listing your HVAC and ventilation units and how often they've needed repair. We'll respond with which ones are best suited to monitoring first.

Ready to catch drift before it's a fault?

Start the conversation

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