Winter is coming — your air conditioner heats too. Cut heating bills by up to 67% vs electric heaters.

🇬🇧 Delivering air conditioning across the UK — free UK mainland delivery on in-stock units
Swegon COMPACT Cassette 3.5kW
Swegon

Swegon COMPACT Cassette 3.5kW

Pre-OrderEnergy A++
£1,417.910

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

Dispatched in 3-5 working days
UK-Wide Delivery
Free UK mainland delivery on in-stock units
🇪🇺 EU Delivery available
EU pre-order — approx. 4 weeks, dispatch + 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 Swegon COMPACT Cassette 3.5kW is the perfect blend of efficiency and performance for smaller commercial or residential spaces. Despite its compact footprint, this unit delivers robust cooling and heating capabilities, making it an excellent choice for individual offices, small meeting rooms, or boutique retail shops. The unit is designed for easy installation in restricted ceiling voids, providing a flexible solution for challenging architectural layouts. Featuring advanced airflow control, it ensures that air is directed exactly where it is needed, maintaining a comfortable environment without creating uncomfortable draughts. The unit is fully compatible with modern building management systems, allowing for seamless integration and remote control. Its energy-efficient inverter compressor ensures that power consumption is kept to a minimum, even during peak usage. With its quiet operation and sleek, unobtrusive design, the Swegon COMPACT Cassette provides a professional climate control solution that enhances the comfort of any space. Rely on Swegon’s expertise to deliver a high-quality, sustainable, and efficient air conditioning experience.

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.

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

Full Specifications

Cooling Capacity12,000 BTU
Recommended Room Size25-35 sqm
Energy RatingA++
Smart HomeSwegon WISE, Modbus
Noise Level—
CategoryCeiling Cassettes
SKUSWE-COMP-CAS-35

Description

The Swegon COMPACT Cassette 3.5kW is the perfect blend of efficiency and performance for smaller commercial or residential spaces. Despite its compact footprint, this unit delivers robust cooling and heating capabilities, making it an excellent choice for individual offices, small meeting rooms, or boutique retail shops. The unit is designed for easy installation in restricted ceiling voids, providing a flexible solution for challenging architectural layouts. Featuring advanced airflow control, it ensures that air is directed exactly where it is needed, maintaining a comfortable environment without creating uncomfortable draughts. The unit is fully compatible with modern building management systems, allowing for seamless integration and remote control. Its energy-efficient inverter compressor ensures that power consumption is kept to a minimum, even during peak usage. With its quiet operation and sleek, unobtrusive design, the Swegon COMPACT Cassette provides a professional climate control solution that enhances the comfort of any space. Rely on Swegon’s expertise to deliver a high-quality, sustainable, and efficient air conditioning experience.

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

£772

This AC / season

£257

You save / season

£514

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC953 kWh£257Up to 300%
Plug-in electric heater2858 kWh£772100%
Electric storage heater2858 kWh£772100%

Heat output estimated from this unit's 13,000 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 →