Globally recognized high developmental capability
CHOFU possesses one of the highest developmental capabilities in Japan in the field of environmental technology like natural refrigerants. We have obtained certifications from diverse authorities of countries around the world in fields of environmental and product safety.
Abundant Developmental Achievements
We make use of our pioneer spirit and technologies that we’ve accumulated for over 60 years, and are endeavoring to create a life that brings comfort to people and the earth.
Various Hot Water Heat Source Technologies
We are developing equipment that uses diverse heat sources, such as heat pump, electricity, solar energy, and gas.
We have many patents on a wide range of products.
|Product Type||Registration Number||Title of Invention|
|CO2 Heat Pump||5965731||Heating method of hot water storage tank and hot water storage type water heater|
|CO2 Heat Pump||5312215||Heat recovering system|
|CO2 Heat Pump||5436933||Hot water supply system|
|CO2 Heat Pump||4702783||Thermal load prediction device and thermal load prediction method|
|Heat Pump||3901624||Heating operation method of air conditioning system|
|Gas-fired Water Heater||6190981||Heat exchanger|
|Gas-fired Water Heater||6128649||Heating equipment|
|Gas-fired Water Heater||6126822||Heat exchanger|
|Gas-fired Water Heater||6016263||Air-fuel mixture distribution structure, piloted rich-lean combustion burner having the same and air-fuel mixture distribution method|
|Gas-fired Water Heater||5553665||Low NOx burner and gas water heater using the same|
|Gas-fired Water Heater||5553654||Low NOx burner and gas water heater using the same|
|Gas-fired Water Heater||5388873||Water heater|
|Solar Water Heater||4993282||Solar water heater|
|Solar Water Heater||5415092||Operating method of water heater|
|Solar Water Heater||5422190||Heat medium injection method|
|Solar Water Heater||5322532||Water heating method|
CHOFU SEISAKUSHO products have been certified in Japan, and by countries around the world and by diverse international agencies.
Creating a sustainable society that coexists with a rich living environment.
[Creating a Sustainable Society]
Global environmental issues such as global warming, climate change, and air pollution have become common global-scale challenges.
Our state-of-the-art facility and exceptional engineers support the development of low environmental impact products, high optimization of products, and development of products that can respond to disasters.
Mode testing room
Performance testing room
Developments that meet user and market needs
We receive requests from our users for products with low running cost and operational ease, and we develop products that meet these needs.
We also respond to specific needs of each market, such as specifications and the gas type to be used.
Easy-to-maintain structure to offer ease of use for our contractors and maintenance workers.
Consideration for not just product sales, but also for after-sales services. Maintenance ease is also considered in our product development process.
Development with a focus on durability and reliability for use in extreme climates.
We conduct tests under strict conditions to ensure normal operation under diverse climatic conditions. Only products that have fulfilled these requirements and criteria are introduced to the market.
Please contact us and our expert support team will answer all your questions about our products.