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Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit
Haier

Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit

In StockEnergy A++
£4,080.000

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

Dispatched in 2-3 working days
UK-Wide Delivery
Free UK mainland delivery on in-stock units

Retail prices include VAT.

The Haier 4U85S2SR5FA is a high-performance 8.5kW multi-split outdoor unit designed to power up to four indoor units simultaneously. This robust system is perfect for larger UK homes or light commercial spaces where individual climate control is required across multiple rooms. By utilising a single outdoor condenser, you significantly reduce the external footprint compared to installing multiple individual systems. Featuring advanced DC inverter technology, this unit intelligently modulates its power output to match the specific cooling or heating demand of each connected room, ensuring optimal energy efficiency and whisper-quiet operation. The system is fully compatible with a variety of Haier indoor units, including wall-mounted, ducted, and cassette styles, offering complete design flexibility. Whether you are looking to maintain a comfortable temperature in a large open-plan living area or need independent control for several bedrooms, this unit provides a reliable, future-proof solution. Its R32 refrigerant compatibility ensures it meets modern environmental standards, making it a smart, long-term investment for any property owner seeking premium, multi-zone climate management.

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.

Google HomeAmazon Alexa
  • Free UK mainland delivery on in-stock units
  • Manufacturer warranty included
  • 14-day returns

Technical documents & videos

More from Haier →

Official Haier manual

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

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Full Specifications

Cooling Capacity29,000 BTU
Recommended Room SizeUp to 85m²
Energy RatingA++
Smart HomeGoogle Home, Amazon Alexa
Noise Level—
CategoryMulti-Split System AC
SKU4U85S2SR5FA

Description

The Haier 4U85S2SR5FA is a high-performance 8.5kW multi-split outdoor unit designed to power up to four indoor units simultaneously. This robust system is perfect for larger UK homes or light commercial spaces where individual climate control is required across multiple rooms. By utilising a single outdoor condenser, you significantly reduce the external footprint compared to installing multiple individual systems. Featuring advanced DC inverter technology, this unit intelligently modulates its power output to match the specific cooling or heating demand of each connected room, ensuring optimal energy efficiency and whisper-quiet operation. The system is fully compatible with a variety of Haier indoor units, including wall-mounted, ducted, and cassette styles, offering complete design flexibility. Whether you are looking to maintain a comfortable temperature in a large open-plan living area or need independent control for several bedrooms, this unit provides a reliable, future-proof solution. Its R32 refrigerant compatibility ensures it meets modern environmental standards, making it a smart, long-term investment for any property owner seeking premium, multi-zone climate management.

Compare similar units

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

Cooling Capacity
29,000 BTU
30,000 BTU
30,000 BTU
30,000 BTU
Room Size
Up to 85m²
Up to 110m²
Up to 100m² total
Up to 75m² total (2-3 rooms)
Energy Rating
A++
A++
A++
A++
Heating Capable
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Smart Home
Google Home, Amazon Alexa
Google Home, Amazon Alexa
Amazon Alexa, Google Home
Amazon Alexa, Google Home
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£4,080.00
£3,134.33
£4,253.73
£1,701.49

Common questions about the Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit

How many BTU is the Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit?

The Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit has a cooling capacity of 29,000 BTU, suitable for Up to 85m².

What room size is the Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit suitable for?

The Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit is recommended for rooms Up to 85m².

Can I install the Haier 4U85S2SR5FA 8.5kW 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 Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit smart-home compatible?

Yes — the Haier 4U85S2SR5FA 8.5kW Multi-Split Outdoor Unit supports Google Home, Amazon Alexa for app and voice control.

Annual energy savings estimate

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

This unit

235 kWh/yr

EER 13

Standard model

382 kWh/yr

EER 8

Est. saving

£39.72

147 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (29,000 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 9 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£1899

This AC / season

£633

You save / season

£1266

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC2345 kWh£633Up to 300%
Plug-in electric heater7034 kWh£1899100%
Electric storage heater7034 kWh£1899100%

Heat output estimated from this unit's 32,000 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 £633/season to heat a room vs £1899 for an electric heater - that's £1266 saved. https://stockool.store/products/haier-4u85s2sr5fa-8-5kw-multi-split-outdoor-unit

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