The Section 25D Residential Clean Energy Credit, which provided a 30% tax credit on purchased solar and battery systems, expired for most residential expenditures after December 31, 2025, under the One Big Beautiful Bill Act. However, the Section 25D Energy Efficient Home Improvement Credit remains
Ningbo 4USUNNY Co.,Ltd dedicated to the research and production of green new energy products, actively responding to the latest needs of users, and maintaining long-term cooperation in new technology research and development with Zhejiang University. The company produces and develops solar air conditioners, solar refrigerators,
Ningbo 4Usunny Co.,Ltd team maintains an innovative spirit, and a new bag of ACDC variable frequency grid connected solar air conditioners achieves clear energy consumption. Users can clearly know what energy the air conditioner is using through the color displayed on the internal unit of
| Location: | Keio University( medical, shinjuku Campus),Tokyo ,
Japan |
| Product: | Free Cool Duct Hybrid Solar Air Conditioner |
| Indoor Units: | 187 units |
Free Cool systems are installed in control rooms of each class rooms, calmly watch out for the safety of passengers.
| Location: | Hotel Mercure Sao Paulo Paulista,
Brazil |
| Number of floors: | 03F to 15F |
| Total floor area: | 38,575 m2 |
| Completion: | 2009 |
| Product: | Free Cool Duct Hybrid Solar Air Conditioner |
| Indoor units: | 187 Units |
This project is unique for a number of reasons. First of all, the outdoor units of the Free Cool system are placed in mechanical shaft space on the outside of the building. Because of this it was not necessary to have mechanical floors in each of two towers. Second, the intelligent Manager centralized control system has been included for individual air conditioning management. Third, use of heatrecovery system, in combination with heat reclaim ventilator, means very low energy consumption.
Because of power saving and eco-friendly air conditioner and R10a gas, offers you a suitable indoor environment and keeps you away from air condition disease.
| Location: | são paulo metro station , Brazil |
| Product: | Wall Mount Solar Hybrid Air Solar Air Conditioner |
Free Cool systems are installed in control rooms of each metro station, working 24 x7
| Location: | MileNorth Hotel, 166 East Superior St.,
Chicago, IL 60611 |
| Completion | 2012 |
| Product: | Free Cool Duct And Wall Mound Hybrid Solar Air Conditioner,
Atmospheric Water Generator |
| Indoor units: | 70 units |
This project is unique for a number of reasons. First of all, Power saving and the outdoor units of the Free Cool system are placed in mechanical shaft space on the outside of the building. Because of this it was not necessary to have mechanical floors. Second, hot water utility. Third and eco-friendly Air Conditioner, with multi indoor wall mount units attached with sensor. Also using atmospheric water systems each floor. And added advantages power saving and eco-friendly gas R410a, offers you a suitable indoor environmental and keeps you away from air condition disease. Overall running costs are an greatly reduced when compared to conventional split system air conditioners.
| Location: | Days Inn and Suites Miami/North Beach Oceanfront
7450 Ocean Terrace, I-95 exit 7 East/SR A1A North at 75th Street Miami Beach, FL 33141- Florida |
| Completion | 2011 |
| Product: | Free Cool Duct unit are fixed in lobby and restaurant area Multi wall mount fix in guest rooms attached with sensors and each floor atmospheric water Generator |
| Indoor units: | 70 units |
This project is unique for a number of reasons. First of all, Power saving and the outdoor units of the Free Cool duct unit are placed in outside of the hotel. Second, hot water utility. Third, and eco-friendly Air Conditioner, with multi indoor wall mound units attached with sensor. Also using atmospheric water systems each floor. And added advantages power saving and eco-friendly gas R410a, offers you a suitable indoor environmental and keeps you away from air condition disease. Overall running costs are an greatly reduced when compared to conventional split system air conditioners.
| Location: | University building Jos�� Soalheiro,
Teresa Castro & Ana Paula Calheiros, Lisbon, Portugal |
| Completion: | 2014 |
| Product: | Free Cool Duct Mount Hybrid Solar Air Conditioner,
Atmospheric Water Generator |
| Indoor Units: | 180 units |
Free Cool systems are installed in each class room and computer lab, teacher rooms of each, with ducted channels
| Location: | The Bulgarian National Bank in Bulgaria |
| Completion: | 2010 |
| Product: | Free Cool Duct Hybrid Solar Air Conditioner |
| Indoor Units: | 387 units |
This project is unique for a number of reasons. First of all, the outdoor units of the Free Cool system are placed in mechanical shaft space on the outside of the building. Because of power saving and eco-friendly air conditioner and R410a gas, offers you a suitable indoor environment and keeps you away from air condition disease. the intelligent Manager centralized control system has been included for individual air conditioning management with water level control. Third, use of heat recovery system, in combination with heat reclaim ventilator, means very low energy consumption.
| Location: | Shell Canada located at 6814 Airport Road in Fort St. John,
BC,Canada |
| Completion: | 2011 |
| Product: | Free Cool Duct Hybrid Solar Air Conditioner ,
Atmospheric Water Generator |
| Indoor Units: | 40 units |
This project consists of a new office building built for Shell Canada located at 6814 Airport Road in Fort St. John, BC. The Shell Office Building has a floor area of approximately 3,216 square meters on two levels.
Free Cool systems are installed in duct Hybrid solar air conditioner each office room and reception area.
| Location: | Sao Paulo, Brazil |
| Number of floors: | 12F |
| Total floor area: | 14,600 m2 |
| Completion: | 2007 |
| Product: | Free Cool Duct Type |
| Units: | 291 units |
Reliability and capability for energy saving during partial load operation were very important. The investor was impressed with the performance of Free Cool system and its sales in the market. The demand for care centres in Brazil is estimated to increase.
| Location: | Honjo elementary school, Kobe ,Hyogo, Japan |
| Completion: | 2010 |
| Product: | Free Cool Wall Mount Hybrid Solar Air Conditioner |
| Indoor Units: | 380 units |
This project is unique for a number of reasons. First of all, Power saving and the outdoor units of the Free Cool system are placed in roof top with water connection. Second, Exclusive hybrid engineering provides the duel benefit of free energy. Day time sunshine full utilise. Third and eco-friendly Air Conditioner, with multi indoor wall mount units attached with sensor also connected to lighting. And using atmospheric water systems different areas in school. And added advantages power saving and eco-friendly gas R410a, offers you a suitable indoor environmental and keeps you away from air condition disease. Overall running costs are an greatly reduced when compared to conventional split system air conditioners.
Free Cool systems are installed in each class room and computer lab, teacher rooms of each, and common area.
| Location: | Roberto Clemente Community Academy, Chicago |
| Completion | 2013 |
| Product: | Free Cool Hybrid Solar Air Conditioner,
Atmospheric Water Generator |
| Indoor units: | 10 units |
This project is unique for a number of reasons. First of all, Power saving and the outdoor units of the Free Cool system are placed in roof top with water connection. Second Exclusive hybrid engineering provides the duel benefit of free energy. Day time sunshine full utilise. Third and eco-friendly Air Conditioner, with multi indoor wall mount units attached with sensor. Also using atmospheric water systems different areas in academy. And added advantages power saving and eco-friendly gas R410a, offers you a suitable indoor environmental and keeps you away from air condition disease. Overall running costs are an greatly reduced when compared to conventional split system air conditioners.
