EXINDA Aura 25,000 Btu/h Vertical Stack Plus Heat Pump ERV (HPERV)
HIGHER-CAPACITY VERTICAL-STACK HEATING, COOLING AND FRESH AIR
EXINDA AURA Vertical Stack Plus is a higher-capacity 60 Hz all-in-one heat pump ERV for apartments, multifamily buildings and multi-room applications where a ceiling-mounted unit is not feasible. The vertical indoor cabinet integrates heating, cooling and fresh-air functions without a conventional outdoor condensing unit for each dwelling.
Is this the right Vertical Stack Plus unit?
- Loads fit the verified capacity at the project design temperatures.
- Vertical wall space, exterior air paths and indoor ducts can be coordinated.
- Structural support for 470 lb, 3 kW auxiliary heat and condensate routing are accounted for.
Separate balanced-ERV airflow data is pending confirmation.
Core Specifications
| System type | Higher-capacity vertical-stack all-in-one heat pump energy recovery ventilator |
| Rated cooling | 25,000 Btu/h; EER 11.65 at 95°F outdoor / 80°F indoor rating conditions |
| Heating table | 21,300 Btu/h at 47°F; 12,800 Btu/h at 23°F; 10,200 Btu/h at 5°F |
| Heating COP | 3.56 at 47°F; 2.37 at 23°F; 2.01 at 5°F |
| Indoor airflow / ESP | 280–850 CFM / 0.32 in. w.g. (80 Pa) |
| Outdoor airflow / ESP | 450–1,320 CFM / 0.80 in. w.g. (200 Pa) |
| Outdoor connections | 8 in. round intake and exhaust |
| Power supply | 208–230 V / 60 Hz / 1 Ph, hardwired |
| MCA / MOP | 30 A / 35 A |
| Auxiliary heat / max input | Up to 3 kW / 3,900 W |
| Compressor / refrigerant | BLDC twin-rotary inverter / R32 A2L |
| Refrigerant charge | Not stated in the supplied submittal |
| Operating range | Heat-pump compressor 5 to 109°F |
| Sound pressure | 48 dB(A) at 1 m; 43 dB(A) at 3 m |
| Indoor filter | MERV 3 |
| Dimensions / weight | 32 × 24 × 84 in. / 470 lb |
Heating, Cooling and Airflow Performance
Use the condition-specific capacity table. Do not treat the outdoor-airflow range as a confirmed balanced ventilation rate.
| Operating point | Capacity / airflow | Input / efficiency | Condition |
|---|---|---|---|
| Cooling | 25,000 Btu/h | 2,140 W; EER 11.65 | 95°F outdoor / 80°F indoor |
| Heating | 21,300 Btu/h | 1,750 W; COP 3.56 | 47°F outdoor |
| Low-temperature heating | 12,800 Btu/h | 1,590 W; COP 2.37 | 23°F outdoor |
| Minimum compressor condition | 10,200 Btu/h | 1,490 W; COP 2.01 | 5°F outdoor |
| Indoor airflow | 280–850 CFM | — | Up to 0.32 in. w.g. |
| Outdoor airflow | 450–1,320 CFM | — | Up to 0.80 in. w.g. |
Source: supplied EXINDA AURA 25K Vertical Stack Plus HPERV submittal.
Technical Documents
Questions Before You Specify
Is 450–1,320 CFM the balanced ventilation rate?
The supplied document does not provide a separate balanced ERV performance table. Confirm the required fresh-air and exhaust airflow before selection.
Which heating capacity should be used?
Use the condition-specific table: 21,300 Btu/h at 47°F, 12,800 Btu/h at 23°F and 10,200 Btu/h at 5°F. The front-page headline differs and is pending confirmation.
What happens below 5°F?
The compressor is disabled below 5°F and up to 3 kW auxiliary heat remains. Confirm the design load against the available auxiliary capacity.
How is Vertical Stack Plus different?
It provides higher cooling capacity and airflow in a larger 470 lb cabinet. Load, duct, wall-space, access and structural checks are independent.
What should an enquiry include?
Provide room loads, design temperatures, ventilation airflow, duct static pressure, service space, electrical supply, condensate route, quantity and schedule.
Request selection support or a quote
For the 25,000 Btu/h Vertical Stack Plus HPERV, provide zone loads, design temperatures, required balanced ventilation airflow and duct static pressure.
Also include wall/service space, structural support for 470 lb, 208–230 V electrical capacity, 3 kW auxiliary heat, condensate route, quantity and schedule.