FACILITY & ENERGY / READING SERIES

Every decision here follows a reading taken somewhere.

Hotarubi Systems studies how lighting, air conditioning, ventilation, refrigeration, and hot water actually draw power across the hours of a building's day — then puts the findings in front of the people who run it.

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Facility control room with meter dials and building system panels

01 / WHAT WE DO

Readings before recommendations

We work from the utility records and sub-meter data a building already produces. Before anything is proposed, we establish where consumption occurs, which system accounts for it, and how much of it happens outside occupied hours — a pattern that shows up in most buildings we look at, and one that is usually the first thing worth addressing.

CIRCUIT INDEX

Lighting Air Conditioning Ventilation Refrigeration Hot Water

02 / HOW WE READ A BUILDING

Three instruments, one report

Pattern reading

Consumption is mapped by system and by hour band, so out-of-hours draw is visible rather than buried in a monthly total.

Early warning

Operating data from air conditioning and ventilation equipment is watched for the gradual drift that tends to come before a fault.

Schedule review

Control schedules are checked against how the building is actually occupied today, not how it was occupied when the schedule was written.

A comfort note

Anything that touches occupant comfort is written up for discussion. Nothing that affects how a space feels is changed on our own authority.

03 / PROCESS

From records to a written report

STEP 1

Records gathered

Existing utility data and available sub-meter readings are collected — no new equipment required to begin.

STEP 2

Systems mapped

Consumption is attributed to lighting, HVAC, ventilation, refrigeration, and hot water by hour band.

STEP 3

Findings reviewed

Adjustments are drafted with their expected effect and uncertainty stated plainly.

STEP 4

Report delivered

A written report and a list of adjustments worth examining are handed over for your team to weigh.

04 / IN THE FIELD

What the readings tend to show

3 wk

Typical scope for a first consumption pattern analysis

Systems commonly reviewed across a building's circuit index

Based in Okayama, working with buildings across Japan

Automatic changes made to comfort settings without discussion

05 / SERVICES

Three ways to start reading your building

Utility data sheets and consumption charts on a desk

Consumption Pattern Analysis

A first look at when and where a building draws power, using records it already has.

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Ventilation equipment with sensor wiring

Predictive Maintenance Setup

Monitoring that flags the drift preceding a fault, before it reaches the occupants.

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Building control panel showing schedule settings

Control Schedule Review

Checking timing schedules against how the building is occupied today.

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06 / GET IN TOUCH

A short conversation is usually enough to start

Send a note about your building and what you'd like to understand better. We'll reply with what data would help and roughly what scope would suit it.

Tell us about your building

Fields marked required are the only ones we need to begin.