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Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System
Sinclair

Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System

In StockEnergy A++

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

£1,141.790

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-24BIK is a high-output wall split system built for demanding spaces such as large residential open-plan spaces, hotel conference suites, and busy modern offices. Generating 6.2kW of cooling and a potent 6.5kW of heating, this unit distributes comfortable airflow across substantial internal volumes up to 70 square metres. Powered by modern R32 refrigerant, it ensures strong thermodynamic performance coupled with reduced environmental impact. Built-in smart Wi-Fi gives facility managers and homeowners complete authority over timer schedules, fan profiles, and operating modes from anywhere. A quiet compressor design, dual horizontal and vertical auto-swing vanes, and a comprehensive anti-mould self-drying cycle make this system both user-friendly and hygienic. It also features automatic restart and diagnostic monitoring, guaranteeing rapid recovery following unexpected mains power interruptions.

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

Cooling Capacity

21,000 BTU

Energy Rating

A++

Recommended Room

50-70 m²

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 Capacity21,000 BTU
Recommended Room Size50-70 m²
Energy RatingA++
Smart HomeAmazon Alexa, Google Assistant
Noise Level—
CategorySplit System AC
SKUSIN-SIH24BIK-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-24BIK is a high-output wall split system built for demanding spaces such as large residential open-plan spaces, hotel conference suites, and busy modern offices. Generating 6.2kW of cooling and a potent 6.5kW of heating, this unit distributes comfortable airflow across substantial internal volumes up to 70 square metres. Powered by modern R32 refrigerant, it ensures strong thermodynamic performance coupled with reduced environmental impact. Built-in smart Wi-Fi gives facility managers and homeowners complete authority over timer schedules, fan profiles, and operating modes from anywhere. A quiet compressor design, dual horizontal and vertical auto-swing vanes, and a comprehensive anti-mould self-drying cycle make this system both user-friendly and hygienic. It also features automatic restart and diagnostic monitoring, guaranteeing rapid recovery following unexpected mains power interruptions.

Compare similar units

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

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Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System

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Mitsubishi Heavy Industries SRK63ZR-WF / SRC63ZR-W Diamond 6.3kW High Capacity Split System

Mitsubishi Heavy Industries

Mitsubishi Heavy Industries SRK63ZR-WF / SRC63ZR-W Diamond 6.3kW High Capacity Split System

Cooling Capacity
21,000 BTU
20,500 BTU
20,500 BTU
21,500 BTU
Room Size
50-70 m²
30-55 m²
30-55 m²
Up to 65m²
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
NIBE Uplink, myUplink, Amazon Alexa, Google Assistant
myUplink, Amazon Alexa, Google Assistant, Apple HomeKit
Amazon Alexa, Google Home
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£1,141.79
£4,000.00
£4,850.75
£1,595.00

Common questions about the Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System

How many BTU is the Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System?

The Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System has a cooling capacity of 21,000 BTU, suitable for 50-70 m².

What room size is the Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System suitable for?

The Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System is recommended for rooms 50-70 m².

Can I install the Sinclair Keyon SIH-24BIK 6.2kW 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-24BIK 6.2kW Inverter Wall Mounted Split System smart-home compatible?

Yes — the Sinclair Keyon SIH-24BIK 6.2kW Inverter Wall Mounted Split System supports Amazon Alexa, Google Assistant for app and voice control.

How long does delivery of the Sinclair Keyon SIH-24BIK 6.2kW 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.

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Annual energy savings estimate

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

This unit

170 kWh/yr

EER 13

Standard model

277 kWh/yr

EER 8

Est. saving

£28.76

107 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (21,000 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 6 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£1306

This AC / season

£435

You save / season

£870

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC1612 kWh£435Up to 300%
Plug-in electric heater4836 kWh£1306100%
Electric storage heater4836 kWh£1306100%

Heat output estimated from this unit's 22,000 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 £435/season to heat a room vs £1306 for an electric heater - that's £870 saved. https://stockool.store/products/sinclair-keyon-sih-24bik-6-2kw-split-system

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