Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner
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Engineered for demanding residential open-plan spaces and light commercial settings, the Vaillant climaVAIR pro VAI5-050WN provides 5.0kW (18,000 BTU) of high-capacity cooling and heating performance. Designed and manufactured to rigorous German standards, this durable split system guarantees outstanding energy efficiency with an A++ rating for cooling and A+ for seasonal heating. The indoor high-wall unit features 3D air distribution vanes that smoothly oscillate vertically and horizontally to prevent cold drafts. Equipped with a high-performance rotary compressor and eco-friendly R32 refrigerant, it provides dependable operation even in harsh outdoor temperatures down to -15°C. Features like self-cleaning evaporators and absence mode prevent mould build-up while keeping energy overheads minimal. The unit is fully Wi-Fi enabled for instant pairing with smart home systems and smartphone controls.
Need it installed?
We'll match you with a local HVAC engineer.
Smart-home ready
Connects natively with the systems below — control by app or voice.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from Vaillant →Official Vaillant manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Vaillant — ask us and we will send the cut sheet with mounting and clearance figures.
Description
Engineered for demanding residential open-plan spaces and light commercial settings, the Vaillant climaVAIR pro VAI5-050WN provides 5.0kW (18,000 BTU) of high-capacity cooling and heating performance. Designed and manufactured to rigorous German standards, this durable split system guarantees outstanding energy efficiency with an A++ rating for cooling and A+ for seasonal heating. The indoor high-wall unit features 3D air distribution vanes that smoothly oscillate vertically and horizontally to prevent cold drafts. Equipped with a high-performance rotary compressor and eco-friendly R32 refrigerant, it provides dependable operation even in harsh outdoor temperatures down to -15°C. Features like self-cleaning evaporators and absence mode prevent mould build-up while keeping energy overheads minimal. The unit is fully Wi-Fi enabled for instant pairing with smart home systems and smartphone controls.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner
How many BTU is the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner?
The Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner has a cooling capacity of 18,000 BTU, suitable for 35-50 m².
What room size is the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner suitable for?
The Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner is recommended for rooms 35-50 m².
Can I install the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner myself?
No — this unit requires professional installation by a qualified F-gas engineer. Use our Find an Installer service to get matched with a local HVAC professional.
Is the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner smart-home compatible?
Yes — the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner supports Amazon Alexa, Google Home, iOS / Android App for app and voice control.
How long does delivery of the Vaillant climaVAIR pro VAI5-050WN 5.0kW Inverter Wall Split Air Conditioner take?
This unit is 3-5 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A++-rated unit could save versus a standard C-rated model, based on your usage.
This unit
146 kWh/yr
EER 13
Standard model
237 kWh/yr
EER 8
Est. saving
£24.65
91 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (18,000 BTU). Actual savings vary with room size, climate and usage patterns.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 5 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1094
This AC / season
£365
You save / season
£729
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1350 kWh | £365 | Up to 300% | |
| Plug-in electric heater | 4050 kWh | £1094 | 100% | |
| Electric storage heater | 4050 kWh | £1094 | 100% |
Heat output estimated from this unit's 18,425 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →
Share your savings
This heat-pump AC costs only £365/season to heat a room vs £1094 for an electric heater - that's £729 saved. https://stockool.store/products/vaillant-climavair-pro-vai5-050wn-5-0kw-inverter-wall-split-air-conditioner
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