[Simultaneously Held in Nagoya and Toyota] House Building that Overturns the Conventional Wisdom of Whole-House Air Conditioning, Starting from "1.5 Million Yen~". Experience Event to Thoroughly Compare Two Major Systems.
HOLIDAYS, a custom home builder in Aichi Prefecture, will hold a "Whole-House Air Conditioning Comparison Experience Event" on May 16th and 17th, 2026, at their model houses in Nagoya and Toyota. The event will showcase two different whole-house air conditioning systems, Marvex and Mach System, starting from an affordable 1.5 million yen, allowing visitors to compare their unique features and concepts.
📋 Article Processing Timeline
- 📰 Published: May 7, 2026 at 17:20
- 🔍 Collected: May 7, 2026 at 08:31
- 🤖 AI Analyzed: May 7, 2026 at 08:54 (22 min after Collected)
Sumarch Co., Ltd. (Headquarters: Nakamura-ku, Nagoya, Aichi Prefecture; Representative Director: Yoshiaki Torii; hereinafter HOLIDAYS), which operates a custom home building business in Aichi Prefecture, will hold a "Whole-House Air Conditioning Comparison Experience Event" on Saturday, May 16th and Sunday, May 17th, 2026, at its model houses in Midori-ku, Nagoya, Aichi Prefecture, and Toyota City.
This is a valuable opportunity to compare two model houses, each with a different atmosphere and system, while envisioning your ideal lifestyle.
[Special Event Page: https://holidays-design.com/event/112]
What is whole-house air conditioning?
Whole-house air conditioning is a system that cools, heats, and ventilates the "entire house" as one large space, not only in living rooms but also in entrances, hallways, toilets, and washrooms.
In a typical house, "temperature differences between rooms" are common, but in a whole-house air-conditioned home, a comfortable temperature and humidity can be maintained consistently throughout the house, 24 hours a day, 365 days a year.
Lowering the barrier to entry. Whole-house air conditioning achievable from 1.5 million yen.
Whole-house air conditioning is generally said to cost around 2 to 3 million yen to install, but HOLIDAYS has thoroughly pursued pricing with the desire to "deliver this comfort to as many people as possible."
This time, it has become possible to introduce it at a surprising price of "1.5 million yen."
*This price is based on a total floor area of 30 tsubo. Prices vary depending on the floor plan and size.
The air throughout the house changes with a budget of "several air conditioners" + α.
Even when installing air conditioners in each room, it is not uncommon for the purchase and installation costs to total 500,000 to 800,000 yen.
With HOLIDAYS, for a realistic difference of "+ approximately 700,000 yen~" to that budget, you can get "whole-house air conditioning" that keeps even toilets and changing rooms comfortable 24 hours a day.
[Midori Model] Feminine x Whole-House Air Conditioning Marvex
| Concept
Achieving both elegant cuteness and easy housework
A sophisticated and feminine home where light pouring in from the cross-shaped window in the吹き抜け (void) harmonizes with curved beauty.
The down kitchen, where you can feel the presence of your family nearby, and the circular flow centered around the kitchen enhance the quality of life.
| Whole-House Air Conditioning
The Midori model house adopts "Marvex," which provides air conditioning from under the floor without ducts.
*Three features of Marvex*
・Comfortable "ventilation" with a heat exchanger
In normal ventilation, comfortable indoor air is discarded, and uncomfortable outdoor air is taken in. However, with a heat exchanger, "heat" and "humidity" are reused, allowing outside air to be taken in as close as possible to the indoor environment.
・High-performance filter shuts out outside air pollution
Equipped with a double-layered filter that does not allow fine particles such as pollen to pass through. It removes 97% of fine particles 2.0㎛ or larger, and the air enters the room after being purified.
・Effective against odors with floor exhaust
Odor components are generally heavy and tend to accumulate near the floor. Especially in toilets, odors accumulated below are discharged without being stirred up, making it less likely to feel odors.
Since ventilation is planned, it helps counter household odors throughout the house.
| Recommended for
・Those considering a single-story home
・Those sensitive to cold
・Those who like a soft home atmosphere
📍2-409-2 Asahide, Midori-ku, Nagoya, Aichi 458-0031 [MAP]
View details
[Toyota Model] Hotel-like x Whole-House Air Conditioning Mach System
| Concept
A "beautiful residence" that makes you forget everyday life
A high-quality residence reminiscent of a sophisticated hotel lounge.
The moment you open the entrance, the expansive glass wall that allows your gaze to pass through and the profound texture of stone welcome you.
| Whole-House Air Conditioning
The Toyota model house is equipped with the "Mach System," which won the "2022 Energy Saving Award."
*Three features of the Mach System*
・Flexible floor plan design
Since air conditioning rooms can be custom-made, ideal floor plan designs are possible.
・High cost performance
"HOLIDAYS' high airtightness and high insulation performance" x "Mach System, which only requires one household air conditioner" = Achieves good cost performance by suppressing monthly electricity bills!
・24-hour clean air
The air throughout the house circulates through filters about 5 to 10 times per hour.
When passing through the filters, harmful substances such as dust and pollen are removed, maintaining extremely clean air.
| Recommended for
・Those concerned about allergies
・Those who prioritize heating/cooling and ventilation efficiency above all else
・Those who want to see a hotel-like, luxurious style
📍2-18-6 Jincho-cho, Toyota City, Aichi Prefecture [MAP]
*Located about a 12-minute walk from Meitetsu Umetsubo Station, accessible by public transportation.
View details
How to proceed with the experience event
STEP 1: First, book the model house you intuitively "like"!
STEP 2: Experience the design and air conditioning comfort on site.
This is a valuable opportunity to compare two model houses, each with a different atmosphere and system, while envisioning your ideal lifestyle.
[Special Event Page: https://holidays-design.com/event/112]
What is whole-house air conditioning?
Whole-house air conditioning is a system that cools, heats, and ventilates the "entire house" as one large space, not only in living rooms but also in entrances, hallways, toilets, and washrooms.
In a typical house, "temperature differences between rooms" are common, but in a whole-house air-conditioned home, a comfortable temperature and humidity can be maintained consistently throughout the house, 24 hours a day, 365 days a year.
Lowering the barrier to entry. Whole-house air conditioning achievable from 1.5 million yen.
Whole-house air conditioning is generally said to cost around 2 to 3 million yen to install, but HOLIDAYS has thoroughly pursued pricing with the desire to "deliver this comfort to as many people as possible."
This time, it has become possible to introduce it at a surprising price of "1.5 million yen."
*This price is based on a total floor area of 30 tsubo. Prices vary depending on the floor plan and size.
The air throughout the house changes with a budget of "several air conditioners" + α.
Even when installing air conditioners in each room, it is not uncommon for the purchase and installation costs to total 500,000 to 800,000 yen.
With HOLIDAYS, for a realistic difference of "+ approximately 700,000 yen~" to that budget, you can get "whole-house air conditioning" that keeps even toilets and changing rooms comfortable 24 hours a day.
[Midori Model] Feminine x Whole-House Air Conditioning Marvex
| Concept
Achieving both elegant cuteness and easy housework
A sophisticated and feminine home where light pouring in from the cross-shaped window in the吹き抜け (void) harmonizes with curved beauty.
The down kitchen, where you can feel the presence of your family nearby, and the circular flow centered around the kitchen enhance the quality of life.
| Whole-House Air Conditioning
The Midori model house adopts "Marvex," which provides air conditioning from under the floor without ducts.
*Three features of Marvex*
・Comfortable "ventilation" with a heat exchanger
In normal ventilation, comfortable indoor air is discarded, and uncomfortable outdoor air is taken in. However, with a heat exchanger, "heat" and "humidity" are reused, allowing outside air to be taken in as close as possible to the indoor environment.
・High-performance filter shuts out outside air pollution
Equipped with a double-layered filter that does not allow fine particles such as pollen to pass through. It removes 97% of fine particles 2.0㎛ or larger, and the air enters the room after being purified.
・Effective against odors with floor exhaust
Odor components are generally heavy and tend to accumulate near the floor. Especially in toilets, odors accumulated below are discharged without being stirred up, making it less likely to feel odors.
Since ventilation is planned, it helps counter household odors throughout the house.
| Recommended for
・Those considering a single-story home
・Those sensitive to cold
・Those who like a soft home atmosphere
📍2-409-2 Asahide, Midori-ku, Nagoya, Aichi 458-0031 [MAP]
View details
[Toyota Model] Hotel-like x Whole-House Air Conditioning Mach System
| Concept
A "beautiful residence" that makes you forget everyday life
A high-quality residence reminiscent of a sophisticated hotel lounge.
The moment you open the entrance, the expansive glass wall that allows your gaze to pass through and the profound texture of stone welcome you.
| Whole-House Air Conditioning
The Toyota model house is equipped with the "Mach System," which won the "2022 Energy Saving Award."
*Three features of the Mach System*
・Flexible floor plan design
Since air conditioning rooms can be custom-made, ideal floor plan designs are possible.
・High cost performance
"HOLIDAYS' high airtightness and high insulation performance" x "Mach System, which only requires one household air conditioner" = Achieves good cost performance by suppressing monthly electricity bills!
・24-hour clean air
The air throughout the house circulates through filters about 5 to 10 times per hour.
When passing through the filters, harmful substances such as dust and pollen are removed, maintaining extremely clean air.
| Recommended for
・Those concerned about allergies
・Those who prioritize heating/cooling and ventilation efficiency above all else
・Those who want to see a hotel-like, luxurious style
📍2-18-6 Jincho-cho, Toyota City, Aichi Prefecture [MAP]
*Located about a 12-minute walk from Meitetsu Umetsubo Station, accessible by public transportation.
View details
How to proceed with the experience event
STEP 1: First, book the model house you intuitively "like"!
STEP 2: Experience the design and air conditioning comfort on site.