Uses full DC inverter compressors (EVI-type) for high efficiency and variable capacity.

Connectable indoor-unit capacity ratio: 50% – 130%.

Very long piping capability: max total pipe length up to 1,000 m (per certain datasheets)

Max lift/drop (height difference between indoor and outdoor units):

Outdoor unit down: ~110 m

Outdoor unit up: ~90 m

Operating ambient temperatures:

Cooling: up to +50 °C

Heating: down to –23 °C (on some models)

“4-way” one-piece heat exchanger: improves heat transfer by ~30% vs older designs.

Control / communication: supports BACnet IP protocol for integration.

Sound / noise: in some MRV-5 RC (heat recovery) versions, sound power level ~ 78–88 dB(A) depending on model.

2. Haier MRV-5 RC (Heat Recovery, 3-Pipe)

Enables simultaneous cooling and heating via a 3-pipe heat recovery system.

Power range: from 8 HP up to 88 HP (via modular combination) in some models.

Uses R410A refrigerant.

Max pipe length: 1,000 m (for flexibility in large installations) for some variants.

Static pressure of fans: ~110 Pa in some models.

Weight / dimensions (example model): 980 × 750 × 1,690 mm; net weight ~ 267 kg for a 22.4kW unit.

Sound levels: e.g., 57–64 dB(A) sound pressure (varies by model) per Haier spec sheet.

Connectable indoor units: up to 64 indoor units in some designs.

3. Haier MRV-S (Mini-VRF)

Designed for smaller commercial / large residential: supports up to 9 indoor units per outdoor unit.

Refrigerant line (pipe) length: up to 300 m total (per Haier).

Vertical lift (height difference): up to 175 m for some MRV-S units.

Compressor + fan: full DC-inverter compressor + DC fan motor.

Fan design: 21″ (serrated-edge) fan blade (in some models) for good airflow at lower noise.

Example capacity: MRV-S2 Heat Pump model (AU042FPERA) — cooling ~12.6 kW, heating ~14.2 kW.

Warranty: some MRV-S outdoor units offer 5-year parts & labor (depending on region).

4. Haier MRV7 S (New / R32 Version)

Uses low-GWP R32 refrigerant (GWP = 675) to comply with newer F-Gas regulations.

Power / capacity options:

Single-fan units: 4, 5, 6 HP

Double-fan units: 8, 10, 12 HP

Pipe length: up to 300 m (single fan) / 400 m (double fan) for maximum layout flexibility.

Leak detection: multi-zone leak detectors built into indoor units; automatic refrigerant recovery to outdoor unit in case of leak; optional automatic shut-off valves.

Control precision: PID control with ±0.5°C stability to maintain setpoint.

Additional Technical / Performance Features (Common Across Many Haier VRF Systems)

Precise Temperature Control: According to Haier, some MRV-5 systems can hold temperature to within ±1°F of setpoint.

Oil Management: Automatic oil balancing is included in many models, which helps minimize manual work on piping.

Serviceability: Some outdoor units have a “swing-out” hinged electrical control box design, making service and diagnostics more accessible.

Corrosion Resistance: Some units use black-fin anti-corrosion coatings.

Example Product (for Scale)
Haier MRV‑5C 16 HP Inverter VRF Outdoor Unit: This is a Haier outdoor VRF unit (cooling-only). Note: product-listings will often give you the more granular spec sheet depending on the exact HP / kW model.

Summary / Take-Aways
Haier’s VRF line covers a wide range: from small “mini-VRF” (MRV-S) to large commercial VRF (MRV-5 / RC) to newer R32 systems (MRV7 S).

Their systems support very long piping and flexible layouts, making them suitable for large, complex installations.

Efficiency is high due to full DC inverter compressors, precision control, and advanced heat exchanger design.

The newer MRV7 S is more environmentally friendly (uses R32), with added safety features (leak detection).

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