[Case Study] Renewal Driven by Overwhelming 20-Year Durability | Nursery School
CASE STUDY: Nursery School / Childcare Facility (Tokyo)
Incredible Durability: Operating for Nearly 20 Years with Only Core Replenishments.
A “Renewal Installation to the Latest Model" Driven by Absolute Trust.
Equipment Installed: Commercial Food Waste Disposer GOMISER GH-20 (Replacement)
Downsized from a “35kg capacity to a 20kg capacity" to perfectly match current food waste volumes, achieving optimal operational efficiency.
[20 Years of Trust and Proven Results Supporting Hygiene in Childcare]
Tanashi Nursery School
Location: Tokyo
Tanashi Nursery School in Tokyo, a long-time user of our “GOMISER" food waste disposer, has recently upgraded (renewed) their equipment.
Most notably, their original unit operated for nearly 20 years from the time of its initial installation, requiring no major maintenance or repairs other than periodic replenishments of the “Core." Because the electrical systems had finally reached the end of their lifespan, they decided to upgrade to our latest model, highly evaluating the overwhelming durability that had supported their facility’s hygiene for so long.
■ Background: “Incredible Cost Performance" Proven Over 20 Years
With standard food waste disposers, it is not uncommon for high running costs and extensive maintenance—such as “completely replacing the bio-chips" or “cleaning and replacing the agitator blades"—to persist long after installation.
However, the GOMISER installed at Tanashi Nursery School features a unique, simple mechanism that decomposes food waste into “water" for discharge, requiring only minimal operation: the periodic replenishment of the “Core." Because it eliminates the need for tedious maintenance work, it successfully protected the facility’s hygienic environment for an extended period of nearly 20 years with extremely low running costs and minimal labor.
■ Reason for Selection: An Honest Proposal for “Optimization (Downsizing)" to Match Current Needs
During consultations for the replacement, we discovered that the “volume of food waste generated at the school had actually decreased" compared to the past.
Instead of simply selling a successor model with the same capacity, we proposed downsizing from their previous “35kg capacity type" to a more compact “20kg capacity type (GH-20)" to perfectly match their current processing volume.
This approach not only reduced the initial installation (replacement) costs but also eliminated wasted electricity and water expenses. The ability to establish an optimal operational system tailored to the facility’s current realities became a major deciding factor for this renewal.
■ Installation Environment: Smooth Replacement Utilizing Existing Infrastructure

(Photo: Neatly installed in a small space along the outer wall of the school building)
Because this was an upgrade (renewal) within the same series, the plumbing and power supply infrastructure laid down 20 years ago could be used exactly as is. The replacement work was completed smoothly without requiring any major installation construction.
The new unit fits neatly into a small space along the outer wall of the school building. This placement ensures an efficient workflow for childcare staff to deposit waste while maintaining a safe, hygienic environment completely separated from the children’s play areas.
- ✅ No Major Construction Required: Utilizing existing plumbing infrastructure kept installation costs down.
- ✅ Efficient Sizing: Downsizing from a 35kg to a 20kg machine perfectly aligned with current waste generation volumes.
- ✅ Absolute Reliability: Operating solely on Core replenishments, it will continue to protect the school’s hygiene for many years to come.
■ AIC Commentary: Expert Insights
Failure stories regarding food waste disposers—such as “it repeatedly broke down within a few years of installation, racking up repair bills" or “the cost of completely replacing the bio-chips was so high we eventually stopped using it"—are incredibly common across all industries.
[Professional Know-How] The Essential Value of “Durability" and “Operational Costs"
- ✓
The True Value Brought by Minimal Operations:
The reason the system operated for “nearly 20 years" at Tanashi Nursery School is due to its robust processing mechanism, which physically grinds food waste and dissolves it into water. This durability, requiring only the minimal operation of replenishing the Core, is what generates “overwhelming cost performance" from a long-term perspective. - ✓
Proposals That Align with On-Site Changes:
The environment surrounding a facility and the volume of waste generated change over the years. The timing of an equipment upgrade due to aging is the perfect opportunity to review current operations and optimize excessive specifications. We don’t “just sell"; we propose honest, accurate sizing tailored to the actual conditions of your facility.
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