Mold Odor in Hotels
2026-07-24 09:39:14

Increasing Reports of Mold Odor in High-Rise Hotels Prompt HONU to Enhance Its Service Team

Rising Mold Odor Complaints in High-Rise Hotels



In recent times, high-rise hotels, widely recognized for their safety and air conditioning efficiency, have been receiving a spike in complaints about unpleasant mold odors. Due to their tightly sealed design, many of these hotels do not allow for window openings in guest rooms, making natural ventilation nearly impossible. This lack of airflow can lead to the development of mold and dirt in air conditioning units that, when activated, disperse these odors throughout the room.

Increase in Complaints


Some of the frequent complaints voiced by guests include:
  • - A noticeable mold smell when turning on the air conditioning.
  • - An intensifying odor during cooling operation.
  • - The return of unpleasant smells just a few days after cleaning.
  • - Inability to replace indoor air due to non-opening windows.
  • - Ongoing complaints from certain high-floor rooms about air conditioning odors.
  • - A noticeable increase in requests for room changes.

Given these challenges, the environmental conditions enforced by high-rise building designs necessitate a robust response by service providers like HONU.

Comprehensive Cleaning Approach


The cause of these unpleasant odors isn't limited to just the air conditioning unit itself, but can also include various components across the air duct system. If there is mold or buildup in the air passageways such as blower fans, drain lines, or duct grilles, even after cleaning the main air conditioning unit, these odors may recur. Therefore, HONU is focusing on a comprehensive cleaning strategy that addresses not just the air conditioning units but also the entire air pathway.

Specialized Service Enhancements


In response to the increasing queries from high-rise hotels and large accommodation facilities, HONU has upgraded its workforce by hiring additional skilled technicians. These staff members have profound knowledge of hotel-specific air conditioning structures and odor control methods. The firm emphasizes not just increasing the number of services provided, but ensuring thorough inspections pre- and post-service, inspecting drain lines, and conducting test runs. Each guest room will be handed back in a condition fit for occupancy.

Comments from the Leadership


Kenichi Uchida, the CEO of HONU, shared insights about the situation: “In high-rise hotels where windows cannot be opened, the air conditioning systems fundamentally influence the indoor environment. If mold and dirt build up in these systems, the odors can circulate throughout the room, with no windows available for relief. We are witnessing a rise in inquiries from these hotels, and we aim to maintain high-quality service while expanding our specialized team. We are committed to checking beyond just the main air conditioning unit; we will ensure that the grilles, drainage, and overall operational state post-cleaning are scrutinized to prevent any recurrence of odors.”

Contact Information


For inquiries, please reach out through our contact form:
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Company Overview


  • - Company Name: HONU Co., Ltd.
  • - Location: 9-1-7 Akasaka, Minato-ku, Tokyo 107-0052, Japan
  • - CEO: Kenichi Uchida
  • - Established: March 2008
  • - Business Area: Smoking ban and refresh services in hotel rooms, disassembly and cleaning of commercial air conditioning, infection control for medical institutions
  • - Service Brand: Catalyst Power (HONU)
  • - Business Name: KOHKIN LAB
  • - Telephone: 03-6885-5737
  • - Website: HONU Official Site

Through strategic enhancements and comprehensive service, HONU aims to effectively tackle the growing challenge of air quality issues faced by high-rise hotels.


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Topics Consumer Products & Retail)

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