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Sinclair Ray SIH-12BIR 3.2kW Wall Mounted Inverter Split System

In StockEnergy A++

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

£567.160

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 Ray SIH-12BIR delivers reliable 3.2kW cooling and 3.4kW heating, making it an excellent choice for general residential living rooms and medium-sized master suites. Engineered for straightforward installation and effortless everyday operation, it balances high thermal comfort with reduced power consumption thanks to its A++ seasonal efficiency score. Low-GWP R32 refrigerant guarantees compliance with modern environmental regulations while ensuring superior thermal transfer. The unit includes automated self-cleaning features that dry the heat exchanger after cooling cycles, preventing moisture and bacterial buildup. An intuitive infrared remote provides quick access to Turbo boost, Eco mode, and multi-stage fan speed adjustments. Built to endure British winters, the heat pump delivers steady heating even when outdoor temperatures fall to sub-zero levels.

Need it installed?

We'll match you with a local HVAC engineer.

Add smart control

No built-in Wi-Fi — automate this unit with a smart plug & temperature sensor.

Free UK mainland delivery on in-stock units
Manufacturer warranty included
14-day returns

Cooling Capacity

12,000 BTU

Energy Rating

A++

Recommended Room

20-35 m²

Technical documents & videos

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 HomeNot built-in

Noise Level—

CategorySplit System AC

SKUSIN-SIH12BIR-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

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

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Sinclair Ray SIH-12BIR 3.2kW Wall Mounted Inverter Split System

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Cooling Capacity

12,000 BTU

Room Size

20-35 m²

—

Energy Rating

A++

Heating Capable

Yes (heat pump)

Smart Home

Not built-in

Yes

Stock

In Stock

Price inc VAT

£567.16

£604.97

£417.97

£405.90

Common questions about the Sinclair Ray SIH-12BIR 3.2kW Wall Mounted Inverter Split System

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

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

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

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

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

The Sinclair Ray SIH-12BIR 3.2kW Wall Mounted Inverter Split System does not have built-in Wi-Fi control, but you can add smart control using a compatible smart plug.

How long does delivery of the Sinclair Ray SIH-12BIR 3.2kW Wall Mounted Inverter 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.

Electricity tariff (£/kWh)Hours per dayCooling months/year

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 3 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£688

This AC / season

£229

You save / season

£459

~67% less electricity

Heating method	Electricity / season	Cost / season	Efficiency
This heat-pump AC	850 kWh	£229	Up to 300%
Plug-in electric heater	2550 kWh	£688	100%
Electric storage heater	2550 kWh	£688	100%

Heat output estimated from this unit's 11,600 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 £229/season to heat a room vs £688 for an electric heater - that's £459 saved. https://stockool.store/products/sinclair-ray-sih-12bir-3-2kw-split-system

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