If you are running a specialized deep-freeze storage space down to -35°C, the D1.4E9 is built exactly for that level of cold. Equipped with a single 300 mm low-temperature external rotor fan, this ceiling-mounted unit cooler delivers a steady 2200 m³/h of air volume with an 8-meter throw. It is an incredibly reliable, compact choice for smaller walk-in blast freezers, pharmaceutical storage, and commercial frozen food lockers where space is at a premium but temperature accuracy cannot be compromised.

At deep sub-zero temperatures, moisture in the air turns to frost almost instantly. To prevent your system from choking, the D1.4E9 features an extra-wide 9.0 mm fin pitch (3 FPI) paired with high-performance inner-grooved copper tubes. This wide spacing gives frost room to accumulate without immediately blocking the airflow, meaning fewer defrost cycles, less temperature fluctuation, and lower daily energy consumption.

In deep-freeze applications, a failing defrost system means a completely iced-over coil. This unit features a 2.2 kW electric defrost system with stainless steel heating elements running through both the coil block and the drain pan. This ensures that when the defrost cycle kicks in, ice melts completely and drains out through the 1" outlet rather than refreezing. The outer housing is constructed from high-quality pre-painted steel panels designed to resist rust in high-humidity, sub-zero conditions, and every unit is factory pressure-tested to 2.8 MPa to guarantee leak-free operation.

Ruifujie is an established manufacturing enterprise specializing in the design and production of industrial refrigeration equipment, backed by over twenty years of field experience. Our product range includes advanced refrigeration compressors—spanning scroll, screw, and semi-hermetic piston systems—alongside heavy-duty walk-in cold storage rooms, blast freezers, and industrial ice plants. Driven by strict quality control and professional, automated production lines, we provide reliable OEM/ODM customization services for engineering partners worldwide. Today, Ruifujie equipment is exported globally, serving major cold-chain networks in the United States, Russia, and the United Arab Emirates.

Ruifujie offers competitive, tiered pricing for cold room contractors, engineering firms, and commercial refrigeration distributors. If you are designing a low-temperature storage project and need technical layouts or bulk pricing, send over your room dimensions and local voltage standards. Our technical sales team will provide a tailored hardware match and an official commercial quote within 8 hours.