Vivax R+ Design Air Conditioner 18000 BTU 5.3 kW Silver Mirror
Inverter single-split air conditioner Vivax R+ Design 18000 BTU, silver mirror finish: 5.28 kW cooling, 5.57 kW heating, class A++/A+, SEER 7.0 / SCOP 4.0, R32 refrigerant.
Heat pump down to -20 °C outdoors, indoor and outdoor units included, 60-month warranty. Installation by an F-gas certified technician.
The Vivax R+ Design Air Conditioner 18000 BTU 5.3 kW Silver Mirror (model ACP-18CH50AERI+ R32) is a wall-mounted single-split inverter heat pump air conditioner: it cools with 5.28 kW (18000 BTU) and heats with 5.57 kW nominal.
The R+ Design series is the evolution of the R Design: the outdoor unit has anti-freeze heaters on the compressor and base pan, and the heat pump keeps heating down to -20 °C outdoors. It comes in five front finishes with identical performance.
The silver mirror front reflects the room and makes the indoor unit look lighter: a choice for minimalist interiors and glossy surfaces. The 18000 BTU size is roughly suited to open-plan areas and living spaces of 40-50 m². Correct sizing always depends on insulation, orientation and glazed area.
Why pair it with solar PV
Cooling demand peaks in the middle of summer days, exactly when PV modules produce the most. An inverter air conditioner modulates compressor power instead of cycling on and off, so it follows rooftop production and uses self-generated energy instead of drawing it from the grid.
At nominal cooling capacity this model draws about 1550 W of electricity: covering it in full sun takes roughly at least 2.5 kWp of dedicated modules, on top of the rest of the household load. With a battery storage system, surplus daytime energy also runs the air conditioner in the evening.
ACP-18CH50AERI+ R32 technical specifications
| Model | ACP-18CH50AERI+ R32 |
| Series | Vivax R+ Design — Silver Mirror |
| Cooling capacity | 5.28 kW (18000 BTU) |
| Heating capacity | 5.57 kW |
| Energy class (cooling/heating) | A++/A+ |
| SEER / SCOP | 7.0 / 4.0 |
| Refrigerant | R32 (GWP 675) |
| Heating down to | -20 °C outdoors |
| Indoor unit (W x H x D) | 965 x 215 x 319 mm |
| Outdoor unit (W x H x D) | 805 x 330 x 554 mm |
| Net weight | 10.9 kg (indoor) + 33.5 kg (outdoor) |
| Power supply | 220-240 V single-phase, 50 Hz |
| Refrigerant connections | 1/4" / 1/2" |
| Max pipe length / height difference | 30 m / 20 m |
| Warranty | 60 months (declared by the supplier) |
Installation and what to know before buying
- The refrigerant circuit must be connected by an F-gas certified technician or company, as required by Regulation (EU) 2024/573.
- The supply includes the indoor unit, outdoor unit and remote control. Copper pipes, brackets and installation material must be planned separately unless stated otherwise in the order.
- Piping: liquid 1/4", gas 1/2"; maximum length 30 m, maximum height difference 20 m; the first 5 m are covered by the factory charge, beyond that add 12 g/m of R32.
- Single-phase 220-240 V supply: for the larger sizes the installer assesses a dedicated line with suitable protection.
Frequently asked questions
How many square metres does a 18000 BTU air conditioner cover?
Roughly 40-50 m² with average insulation and standard ceiling height. Heavily glazed rooms, attics or south-west facing spaces need more capacity: if in doubt, ask the installer for a heat load calculation.
What changes between the R+ Design finishes?
Only the front of the indoor unit. The EU product fiche registers white, silver, silver mirror, gold and red under the same model identifier, with the same capacities, energy class and SEER/SCOP: you choose based on your interior.
Can it be connected to a solar PV system?
No special connection is needed: the air conditioner is a normal household load. Thanks to the inverter it draws power continuously and in a modulated way, so during sunny hours it mainly uses the energy from your modules. To maximise self-consumption, schedule operation in the middle of the day, also from the app with the Wi-Fi module.
Does the Vivax R+ Design 18000 BTU also heat in winter?
Yes. It is a reversible air-to-air heat pump: it delivers 5.57 kW nominal heating and works down to -20 °C outdoors. In mild climates it can be the main heating for the room it serves; in cold areas it is best used alongside an existing heating system.
Can I install it myself?
No. The units must be connected with refrigerant piping by F-gas certified technicians: this is required by Regulation (EU) 2024/573 and is a condition for the warranty. The technician also performs evacuation, leak testing and commissioning.