Some buildings simply have no ceiling to work with: heritage conversions, mid-rise walk-ups, budget hotels, and school blocks built without suspended voids. Retrofitting those assets is exactly what a portfolio-level carbon target depends on, and it is also where a cassette-only or ducted-only specification gives up. The Midea Wall Mounted Fan Coil Unit keeps those buildings in scope. It mounts directly on the wall, so there is no ceiling crew, no void work, no grid subcontractor to coordinate, and no ceiling material removed or replaced. Left, right, or rear water connections match wherever the existing risers and pipework actually are, which is the difference between an awkward retrofit quote and a straightforward one. One family spans 300–600 CFM with cooling capacities from 1.94 to 4.87 kW across the AC and DC range.
The DC inverter brushless version draws just 10W at low speed and cuts overall fan energy by up to 30%, which is the figure that matters in rooms running around the clock. It also runs 2–5 dB(A) quieter than the AC equivalent, from 27 dB(A) at the low end, and that acoustic headroom is what makes low-speed operation viable: a guestroom or dormitory that stays quiet on low fan keeps the energy strategy intact instead of being turned up by the occupant. The oscillating louver prevents the draught complaints that generate call-backs, and the display shutoff keeps bedrooms dark at night. The front panel removes without tools, so filter service is a quick visit, and the unit keeps its rated power draw between services.
Two panel designs (A Type and P Type) match different interior finishes without changing the unit behind them, which keeps multi-site rollouts simple for procurement and spares. Standard supply is 220–240V / 1Ph / 50Hz, and 0–10V input/output integrates with building management systems so room-level consumption can be monitored rather than estimated. Hongtai supports export contractors with OEM/ODM customisation covering custom voltages from 180–440V at 50/60Hz, project branding, and Modbus RTU or BACnet protocols. ERP and RoHS compliance is standard, which matters most in exactly the building types this unit was designed for.
Where rooms are used a few hours a day and the budget is fixed, the AC 3-speed version delivers full comfort at the lowest unit price. Where rooms run around the clock — the norm in hotels, rental apartments, and dormitories — the DC inverter brushless version is the defensible choice: 10W at low speed, up to 30% lower fan energy, and quieter night operation from 27 dB(A). Both versions share the same wall-mounting method, piping directions, and panel options, so the motor choice never complicates the installation, and the two can be mixed across a building as capital becomes available.
It draws 10W at low speed against a 10–38W DC band and 31–72W for the AC version, with up to 30% lower fan energy overall. In rooms that never switch off, that difference accumulates across the whole year rather than only in peak hours.
Yes. 0–10V input/output is built in for BMS integration, and Hongtai supports OEM/ODM control protocols including Modbus RTU and BACnet, so room-level consumption can be monitored instead of estimated.
Yes. ERP compliance covers the EU Energy-related Products Directive requirements and RoHS covers hazardous-substance restriction, on both AC and DC series.
That is the design case. The unit mounts directly on the wall with left, right, or rear water connections to the existing pipework, so a retrofit proceeds without ceiling work, grid subcontractors, or additional plant space.
Yes. From 27 dB(A), the unit can be left on low speed without complaint, which is what keeps an energy strategy in place after handover. Quieter operation also supports acoustic comfort targets in green building assessments.
| Parameter | AC Series | DC Series |
|---|---|---|
| Airflow Range | 300–600 CFM | 300–600 CFM |
| Cooling Capacity | 1.94–4.61 kW | 2.70–4.87 kW |
| Heating Capacity | 2.34–4.55 kW | 2.94–6.31 kW |
| Power Input | 31–72 W | 10–38 W |
| Sound Pressure Level (H) | 30–40 dB(A) | 27–44 dB(A) |
| Power Supply | 220–240V / 1Ph / 50Hz | 220–240V / 1Ph / 50Hz |
| Fan Type | Cross-flow fan | Cross-flow fan |
| Coil Rows | 2 | 2 |
| Max. Working Pressure | 1.6 MPa | 1.6 MPa |
| Motor Type | Low-noise 3-speed AC | DC Brushless |
| Pipe Connection | G1/2"–G3/4" | G1/2"–G3/4" |
| AEH Option | 750–900 W | — |
| Panel Options | A Type / P Type | A Type / P Type |






Some buildings simply have no ceiling to work with: heritage conversions, mid-rise walk-ups, budget hotels, and school blocks built without suspended voids. Retrofitting those assets is exactly what a portfolio-level carbon target depends on, and it is also where a cassette-only or ducted-only specification gives up. The Midea Wall Mounted Fan Coil Unit keeps those buildings in scope. It mounts directly on the wall, so there is no ceiling crew, no void work, no grid subcontractor to coordinate, and no ceiling material removed or replaced. Left, right, or rear water connections match wherever the existing risers and pipework actually are, which is the difference between an awkward retrofit quote and a straightforward one. One family spans 300–600 CFM with cooling capacities from 1.94 to 4.87 kW across the AC and DC range.
The DC inverter brushless version draws just 10W at low speed and cuts overall fan energy by up to 30%, which is the figure that matters in rooms running around the clock. It also runs 2–5 dB(A) quieter than the AC equivalent, from 27 dB(A) at the low end, and that acoustic headroom is what makes low-speed operation viable: a guestroom or dormitory that stays quiet on low fan keeps the energy strategy intact instead of being turned up by the occupant. The oscillating louver prevents the draught complaints that generate call-backs, and the display shutoff keeps bedrooms dark at night. The front panel removes without tools, so filter service is a quick visit, and the unit keeps its rated power draw between services.
Two panel designs (A Type and P Type) match different interior finishes without changing the unit behind them, which keeps multi-site rollouts simple for procurement and spares. Standard supply is 220–240V / 1Ph / 50Hz, and 0–10V input/output integrates with building management systems so room-level consumption can be monitored rather than estimated. Hongtai supports export contractors with OEM/ODM customisation covering custom voltages from 180–440V at 50/60Hz, project branding, and Modbus RTU or BACnet protocols. ERP and RoHS compliance is standard, which matters most in exactly the building types this unit was designed for.
Where rooms are used a few hours a day and the budget is fixed, the AC 3-speed version delivers full comfort at the lowest unit price. Where rooms run around the clock — the norm in hotels, rental apartments, and dormitories — the DC inverter brushless version is the defensible choice: 10W at low speed, up to 30% lower fan energy, and quieter night operation from 27 dB(A). Both versions share the same wall-mounting method, piping directions, and panel options, so the motor choice never complicates the installation, and the two can be mixed across a building as capital becomes available.
It draws 10W at low speed against a 10–38W DC band and 31–72W for the AC version, with up to 30% lower fan energy overall. In rooms that never switch off, that difference accumulates across the whole year rather than only in peak hours.
Yes. 0–10V input/output is built in for BMS integration, and Hongtai supports OEM/ODM control protocols including Modbus RTU and BACnet, so room-level consumption can be monitored instead of estimated.
Yes. ERP compliance covers the EU Energy-related Products Directive requirements and RoHS covers hazardous-substance restriction, on both AC and DC series.
That is the design case. The unit mounts directly on the wall with left, right, or rear water connections to the existing pipework, so a retrofit proceeds without ceiling work, grid subcontractors, or additional plant space.
Yes. From 27 dB(A), the unit can be left on low speed without complaint, which is what keeps an energy strategy in place after handover. Quieter operation also supports acoustic comfort targets in green building assessments.
| Parameter | AC Series | DC Series |
|---|---|---|
| Airflow Range | 300–600 CFM | 300–600 CFM |
| Cooling Capacity | 1.94–4.61 kW | 2.70–4.87 kW |
| Heating Capacity | 2.34–4.55 kW | 2.94–6.31 kW |
| Power Input | 31–72 W | 10–38 W |
| Sound Pressure Level (H) | 30–40 dB(A) | 27–44 dB(A) |
| Power Supply | 220–240V / 1Ph / 50Hz | 220–240V / 1Ph / 50Hz |
| Fan Type | Cross-flow fan | Cross-flow fan |
| Coil Rows | 2 | 2 |
| Max. Working Pressure | 1.6 MPa | 1.6 MPa |
| Motor Type | Low-noise 3-speed AC | DC Brushless |
| Pipe Connection | G1/2"–G3/4" | G1/2"–G3/4" |
| AEH Option | 750–900 W | — |
| Panel Options | A Type / P Type | A Type / P Type |





