Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
Take full control of whole-house climate management with the Viessmann Vitoclima 300-S Kombi 7.9kW 4-port multi split outdoor condenser. Capable of driving up to four indoor units independently, this high-performance system eliminates clutter by replacing multiple external boxes with a single, streamlined outdoor unit. Featuring high-efficiency DC inverter technology and R32 refrigerant, it provides precise modulation to significantly reduce running expenses throughout the changing seasons. The integrated reverse-cycle heat pump ensures steady heating down to sub-zero British ambient conditions, while quiet-mode fan profiles keep external acoustics unobtrusive for adjacent neighbours. High-grade components, anti-corrosion blue-fin protection, and smart self-diagnostic functions ensure enduring durability and dependable performance across demanding multi-room installations.
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 Viessmann →Official Viessmann 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 Viessmann — ask us and we will send the cut sheet with mounting and clearance figures.
Description
Take full control of whole-house climate management with the Viessmann Vitoclima 300-S Kombi 7.9kW 4-port multi split outdoor condenser. Capable of driving up to four indoor units independently, this high-performance system eliminates clutter by replacing multiple external boxes with a single, streamlined outdoor unit. Featuring high-efficiency DC inverter technology and R32 refrigerant, it provides precise modulation to significantly reduce running expenses throughout the changing seasons. The integrated reverse-cycle heat pump ensures steady heating down to sub-zero British ambient conditions, while quiet-mode fan profiles keep external acoustics unobtrusive for adjacent neighbours. High-grade components, anti-corrosion blue-fin protection, and smart self-diagnostic functions ensure enduring durability and dependable performance across demanding multi-room installations.
Compare similar units
Side-by-side specs for other multi-split system ac in a similar BTU range.
Common questions about the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit
How many BTU is the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit?
The Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit has a cooling capacity of 27,000 BTU, suitable for Up to 90m² total across 4 rooms.
What room size is the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit suitable for?
The Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit is recommended for rooms Up to 90m² total across 4 rooms.
Can I install the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit 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 Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit smart-home compatible?
Yes — the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Viessmann Vitoclima 300-S Kombi 7.9kW Four-Zone Multi Split Outdoor Unit take?
This unit is dispatched in 2-3 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
219 kWh/yr
EER 13
Standard model
356 kWh/yr
EER 8
Est. saving
£36.98
137 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (27,000 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 8 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1721
This AC / season
£574
You save / season
£1147
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2125 kWh | £574 | Up to 300% | |
| Plug-in electric heater | 6375 kWh | £1721 | 100% | |
| Electric storage heater | 6375 kWh | £1721 | 100% |
Heat output estimated from this unit's 29,000 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 £574/season to heat a room vs £1721 for an electric heater - that's £1147 saved. https://stockool.store/products/viessmann-vitoclima-300-s-kombi-7-9kw-four-zone-multi-split-outdoor-unit
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