About Us
Description
The 85℃ R513A 45KW Central Heat and Air Heat Pump is a high-performance system designed to deliver efficient and reliable heating and cooling for large residential, commercial, and industrial spaces. Featuring advanced technology and the environmentally friendly R513A refrigerant, this heat pump is capable of providing temperatures up to 85°C, making it an ideal solution for central heating, ground heating, and air conditioning needs.
Parameters
| BKFXFC-045UXII | |||
| Heating capacity (A7W70-75) | 45 kW | COP | 2.15 |
| Heating capacity (A7W70-80) | 45 kW | COP | 1.76 |
| Heating capacity (A-4W70-75) | 36 kW | COP | 1.78 |
| Compressor | HITACHI | ERP(35℃) | A +++ |
| Refrigerant Type | R513A | Max. Outlet Water Temp.(℃) | 85 |
| Power Supply | 415V 3N~ 50Hz | Circulating Pipe Diameter | 2×DN65 |
| Circulating Water Flow (Temp. Difference 5℃) | 7.7 m³/h | Circulating Water Flow (Temp. Difference 10℃) | 3.9 m³/h |
| Water Side Pressure Loss(kPa) | ≤50 | Noise (dB(A)) | 60 |
| Dimension (W×D×H) | / | Packing Dimension (W×D×H) | 2120*1100*2170 mm |
| N.W.( kg) | / | G.W.( kg) | 643 |
| Note: Heating conditions A7W70-75 : outdoor air temp. 7℃ DB/6℃ WB, inlet water temp. 70℃, outlet water temp. 75℃. Heating conditions A-4W70-75 : outdoor air temp. -4℃ DB/-5℃ WB, inlet water temp. 70℃, outlet water temp. 75℃. | |||
Details

High Efficiency A+++ Energy Level
Targeting the European market, 3VF+ Series Air to Water Heat Pump is specially developed with the most cutting-edge heatpump technology and modern design to meet stringent requirements for efficiency, stability and quietness. Not only does 3VF+
series use R32 Refrigerant and full DC Inverter EVI technology, but also be rated with A+++ energy label. With top energyrating A+++ , the unit is currently most energy efficient and can greatly reduce energy bills for customers.

High Efficiency Full DC Inverter Compressor
Adopt DC inverter compressor and DC brushless fan motor, which can realize 20%-120% stepless capacity adjustment. During operation, the speed of the compressor and fan can be automatically and intelligently adjusted according to the
actual load demand of the user, so as to reduce the energy consumption of the compressor and fan , so that the unit operates at the optimal level and achieves the energy saving purpose of on-demand output

High Efficiency Full DC Inverter Compressor
Adopt DC inverter compressor and DC brushless fan motor, which can realize 20%-120% stepless capacity adjustment. During operation, the speed of the compressor and fan can be automatically and intelligently adjusted according to
the actual load demand of the user, so as to reduce the energy consumption of the compressor and fan , so that the unit operates at the optimal level and achieves the energy saving purpose of on-demand output.

Automatic defrost mode + anti-secondary long ice technology
The outdoor unit adopts outdoor temperature sensor and heat exchanger temperature sensor to perform variable-parameter defrosting and accurately grasp the defrosting timing, which effectively solves the problem of "no defrosting when there is
frost, but defrosting without frost", and the amount of frost per unit time is significantly reduced. Only 1/3 of the normal defrost mode.
At the same time, with the unique anti-secondary long-ice technology of AIROSD, it can ensure that there is no frost at the bottom of the outdoor heat exchanger during heating in winter, and at the same time, the ice-water mixture left along the fins
can be fully heated to a liquid state during defrosting. It is drained through the bottom drain hole to avoid poor heating effect caused by the accumulation of frost at the bottom.
In the pursuit of efficient comfort and green energy savings in modern buildings, the Central Heat And Air Heat Pump system is becoming a core solution. Airosd’s new R513A 45 kW unit with an 85°C high-temperature hot-water outlet is a powerful new member of the Central Heat And Air Heat Pump family, redefining temperature control standards for large spaces.
The unit’s key strength lies in its outstanding versatility — it is perfectly suited as a heat pump for space heating and cooling. Whether delivering powerful heating in severe winter or supplying refreshing cooling in hot summer, this heat pump for space heating and cooling operates efficiently and reliably. Especially notable is its up-to-85°C outlet water temperature combined with strong ground-heating capability, which makes this heat pump for space heating and cooling an ideal heat source for radiant floor heating systems, ensuring even, comfortable indoor warmth and eliminating cold spots.
Using the environmentally friendly R513A refrigerant, the Airosd 45 kW unit not only significantly reduces potential greenhouse-gas impact but also demonstrates excellent low-temperature performance, maintaining stable and efficient heating down to –25°C. This allows it to be easily integrated into an existing HVAC system with heat pump, serving as either the primary heat source or an efficient supplement, and substantially improving year-round efficiency of the overall HVAC and heat pump system while cutting building operating energy use and costs.
For hotels, schools, office buildings and large villas, choosing Airosd’s high-performance Central Heat And Air Heat Pump means selecting a future-ready temperature-control solution that combines top-tier heating, cooling and energy-saving technologies to deliver revolutionary comfort and sustainable performance.