Vaillant climaVAIR pro VAI5-035WN 3.5kW Inverter Split Air Conditioner
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The Vaillant climaVAIR pro VAI5-035WN 3.5kW (12,000 BTU) inverter split system offers premium German engineering tailored for medium-sized living rooms, open-plan dining spaces, and home office environments. Operating on eco-conscious R32 refrigerant, the system achieves an outstanding A++ seasonal energy rating for cooling alongside high-efficiency heat pump warming in winter. Key comfort features include a high-velocity turbo mode for rapid thermal adjustment, an intelligent 'I Feel' sensor incorporated into the remote handset, and four selectable fan speeds that maintain hushed acoustic levels. The active ionisation and multi-stage filtration system capture particulate airborne pollutants, ensuring fresh indoor environments for allergy sufferers. The integrated Wi-Fi interface links easily to your mobile device, granting complete operational oversight from anywhere. Professional F-Gas installation is legally required.
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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
Full Specifications
Description
The Vaillant climaVAIR pro VAI5-035WN 3.5kW (12,000 BTU) inverter split system offers premium German engineering tailored for medium-sized living rooms, open-plan dining spaces, and home office environments. Operating on eco-conscious R32 refrigerant, the system achieves an outstanding A++ seasonal energy rating for cooling alongside high-efficiency heat pump warming in winter. Key comfort features include a high-velocity turbo mode for rapid thermal adjustment, an intelligent 'I Feel' sensor incorporated into the remote handset, and four selectable fan speeds that maintain hushed acoustic levels. The active ionisation and multi-stage filtration system capture particulate airborne pollutants, ensuring fresh indoor environments for allergy sufferers. The integrated Wi-Fi interface links easily to your mobile device, granting complete operational oversight from anywhere. Professional F-Gas installation is legally required.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 4 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£769
This AC / season
£256
You save / season
£513
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 950 kWh | £256 | Up to 300% | |
| Plug-in electric heater | 2850 kWh | £769 | 100% | |
| Electric storage heater | 2850 kWh | £769 | 100% |
Heat output estimated from this unit's 12,965 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 →