Deodorizing Construction Service "Catalyst Power" Specializing in Making Hotel and Ryokan Smoking Rooms Non-Smoking Achieves Over 6,000 Rooms Constructed Nationwide

HONU Inc. (Headquarters: Minato-ku, Akasaka, Tokyo; President and CEO: Kenichi Uchida) is pleased to announce that its professional deodorizing and antibacterial coating service "Catalyst Power," designed for hotels and ryokans, has achieved over 6,000 rooms constructed nationwide.

Service Overview

"Catalyst Power" is a professional deodorizing construction service that uses a unique catalytic technology combining platinum colloid, silver colloid, and titanium oxide to chemically neutralize, decompose, and detoxify the accumulated cigarette odor (VOCs = Volatile Organic Compounds) in hotel and ryokan smoking rooms.

◾️ Voices from Facilities That Have Adopted the Service

"We've had various companies perform construction before, but this is the first time the odor hasn't returned. It's been over six months since the construction, and we've had zero complaints about cigarette odor."

— General Manager, Accommodation Facility

"The construction period and cost, which were 1/10th of renovation, were the deciding factors. Being able to convert to a non-smoking floor without stopping operations was significant. It's also reassuring to get VOC measurement data."

— Hotel Facility Manager

It is possible to convert smoking floors to non-smoking floors without the need for wallpaper replacement or major renovations.

Our unique VOC measurement confirms an 83% reduction in odor after construction, and the effect has been proven to last for more than 6 months after construction. * Unlike construction that masks odors with other scents, there is no return of cigarette odor.

Catalyst Power

Measured Data: Air conditioning disassembly and cleaning restores room airflow to approximately 4 times its previous speed.

Most hotel guest room air conditioners are "concealed type" with the main unit housed in the ceiling, and the industry faces a challenge with the limited number of contractors capable of disassembly and cleaning. Our company handles the disassembly and cleaning of concealed air conditioners.

In construction performed in March 2026 on 21 rooms at a city hotel in the Kanto region, the average airflow speed at the outlet recovered to 2.00m/s from 0.50m/s before construction, an increase of approximately 4 times. Airflow improvement was confirmed in all 21 rooms.

KOHKIN LAB

Since a decrease in airflow and wind speed directly leads to reduced heating and cooling efficiency (increased electricity costs) and odor diffusion, we conduct airflow tests before and after all air conditioning construction and report the results numerically.

Three Reasons to Choose Us

【Reason 1】Achieve Non-Smoking in a Short Construction Period and at Low Cost

Convert 800 square meters (approx. 33 rooms) of smoking floor to non-smoking floor in as little as 5 days.

Compared to renovations, the construction period and cost are approximately 1/10th. Guest rooms can be sold from the day after construction, minimizing loss of occupancy.

【Reason 2】Effects Proven by Numbers

We conduct VOC concentration measurements and air conditioner airflow tests before and after construction, and provide them as a construction report. You can confirm the effects with numerical evidence, not just a "feeling that the odor has disappeared."

【Reason 3】Fragrance-Free and No Impact on the Human Body

All catalytic components used are proven to have no impact on the human body. As no fragrances are used, it also addresses odor pollution issues. We have a track record of construction in medical facilities and nursery schools.

Implementation Record

Our services have been adopted by accommodation facilities nationwide, including major city hotel chains, and our cumulative construction record now exceeds 6,000 rooms.

Two Service Plans

【Plan A】Smoking Room Non-Smoking Conversion Package

Catalytic coating construction for the entire smoking floor. Covers walls, ceilings, floors, and air conditioner interiors.

【Plan B】Guest Room Refresh Cleaning

A full maintenance plan combining surface cleaning of the entire guest room, disassembly and cleaning of concealed air conditioners, and removal of water scale. * We specialize in water scale treatment due to hard water in hot spring towns and the Kyushu/Okinawa areas.

Company Profile

Company Name: HONU Inc.

Representative: Kenichi Uchida, President and CEO

Location: 9-1-7 Akasaka, Minato-ku, Tokyo

Business Activities: Deodorizing services for hotels and accommodation facilities

URL: https://honucare.co.jp

Service: https://honucare.co.jp/catalist/