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Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System
Sinclair

Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System

In StockEnergy A++

Available to order — dispatched on the lead time shown below.

£593.000

Trade pricing available — apply or sign in for your trade rate

2-4 business days
UK-Wide Delivery
Free UK mainland delivery on in-stock units
🇪🇺 EU Delivery available
Dispatched in 3–7 working days, then 5–10 working days EU transit
Orders under €150 ship VAT-paid at checkout (IOSS, no charges on delivery). Orders of €150 or more ship DDU — import VAT and customs duty are collected by the courier on delivery.

Retail prices include VAT.

The Sinclair Keyon SIH-12BIK provides balanced year-round temperature management with a nominal 3.2kW cooling capacity, matching the requirements of typical master bedrooms and standard British living rooms. Driven by DC inverter technology and low-GWP R32 refrigerant, this wall-mounted split unit guarantees superior energy economy with an A++ seasonal cooling efficiency rating. The heat pump functionality produces 3.4kW of warmth, providing an economical alternative to traditional central heating during transitional autumn and chilly winter days. Its built-in Wi-Fi interface lets users adjust ambient conditions, set scheduled timers, and control fan velocities remotely from iOS or Android handhelds. Features include a silent mode designed to preserve nighttime rest, automated air swing louvres for draught-free coverage, and intelligent pre-heating to prevent cold drafts on startup. Robust outdoor engineering ensures flawless operation in external temperatures down to -15°C.

1

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.

Amazon AlexaGoogle Assistant
  • Free UK mainland delivery on in-stock units
  • Manufacturer warranty included
  • 14-day returns

Technical documents & videos

More from Sinclair →

Official Sinclair manual

The manufacturer's PDF for this model is being sourced and will be downloadable here.

All Sinclair catalogues and rangesMissing a document? Ask our team and we will send it over.

Full Specifications

Cooling Capacity12,000 BTU
Recommended Room Size20-35 m²
Energy RatingA++
Smart HomeAmazon Alexa, Google Assistant
Noise Level—
CategorySplit System AC
SKUSIN-SIH12BIK-SET

Physical dimensions

Exact dimensions for this model are being confirmed with Sinclair — ask us and we will send the cut sheet with mounting and clearance figures.

Description

The Sinclair Keyon SIH-12BIK provides balanced year-round temperature management with a nominal 3.2kW cooling capacity, matching the requirements of typical master bedrooms and standard British living rooms. Driven by DC inverter technology and low-GWP R32 refrigerant, this wall-mounted split unit guarantees superior energy economy with an A++ seasonal cooling efficiency rating. The heat pump functionality produces 3.4kW of warmth, providing an economical alternative to traditional central heating during transitional autumn and chilly winter days. Its built-in Wi-Fi interface lets users adjust ambient conditions, set scheduled timers, and control fan velocities remotely from iOS or Android handhelds. Features include a silent mode designed to preserve nighttime rest, automated air swing louvres for draught-free coverage, and intelligent pre-heating to prevent cold drafts on startup. Robust outdoor engineering ensures flawless operation in external temperatures down to -15°C.

Compare similar units

Side-by-side specs for other split system ac in a similar BTU range.

Cooling Capacity
12,000 BTU
12,000 BTU
12,000 BTU
12,000 BTU
Room Size
20-35 m²
—
—
—
Energy Rating
A++
A++
A++
A++
Heating Capable
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Smart Home
Amazon Alexa, Google Assistant
Yes
Yes
Yes
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£593.00
£604.97
£417.97
£405.90

Common questions about the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System

How many BTU is the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System?

The Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System has a cooling capacity of 12,000 BTU, suitable for 20-35 m².

What room size is the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System suitable for?

The Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System is recommended for rooms 20-35 m².

Can I install the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System 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 Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System smart-home compatible?

Yes — the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System supports Amazon Alexa, Google Assistant for app and voice control.

How long does delivery of the Sinclair Keyon SIH-12BIK 3.2kW Inverter Wall Mounted Split System take?

This unit is 2-4 business days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.

Annual energy savings estimate

How much this A++-rated unit could save versus a standard C-rated model, based on your usage.

This unit

97 kWh/yr

EER 13

Standard model

158 kWh/yr

EER 8

Est. saving

£16.44

61 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (12,000 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 4 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£712

This AC / season

£237

You save / season

£475

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC879 kWh£237Up to 300%
Plug-in electric heater2638 kWh£712100%
Electric storage heater2638 kWh£712100%

Heat output estimated from this unit's 12,000 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 £237/season to heat a room vs £712 for an electric heater - that's £475 saved. https://stockool.store/products/sinclair-keyon-sih-12bik-3-2kw-split-system

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