HMO & Co-Living Case Study

21-Bedroom Sunderland Co-Living Infrared Heating EPC B Case Study

Sunderland, United Kingdom 21-bedroom co-living and multi-occupancy residential development

A 21-bedroom co-living development in Sunderland achieved a strong EPC B rating with iHelios smart infrared heating as a core part of the building’s energy strategy.

The project combined room-by-room heating control, upgraded insulation, controlled ventilation and realistic energy-demand calculations, demonstrating that EPC performance depends on the whole building rather than the heating technology alone.

605 m² Floor area
31 zones Independent controls
iHelios Ceiling Film Heating installation
EPC B Energy performance rating

The challenge

The project involved a large 21-bedroom co-living development with shared spaces, varied occupancy patterns and different heating requirements across individual rooms.

A key challenge was overcoming the common assumption that infrared heating automatically leads to a poor EPC result. In many SAP and EPC assessments, modern infrared systems can be grouped with older direct-electric heaters without fully recognising advanced controls, zoning, building-fabric improvements or ventilation performance.

The heating strategy therefore needed to provide individual room control while supporting the wider SAP assessment and the building’s overall energy-performance targets.

The system also needed to suit a high-occupancy property where bedrooms and shared areas would not all be used or heated at the same time.

The iHelios solution

iHelios smart infrared heating was installed as a core part of the property’s integrated energy strategy.

Each bedroom and relevant shared space could be controlled independently, allowing heat to be delivered only where and when it was needed.

The system was designed around real occupancy patterns rather than assuming that every room would require continuous heating at the same time.

The infrared heating also avoided central heating distribution losses because there was no wet pipework, central boiler or stored heat moving around the building.

Advanced controls, responsive heating and individual zoning supported more accurate management of comfort and energy use across the property.

System installed

• iHelios smart infrared heating
• Independent room-by-room heating zones
• Advanced temperature controls
• Heating aligned with actual occupancy patterns
• Upgraded insulation throughout the property
• Reduced heat loss across the building envelope
• Controlled ventilation
• All-electric heating strategy
• No central boiler
• No wet heating pipework
• No central stored-heat distribution losses

Results and outcomes

The completed Sunderland development achieved a strong EPC B rating with iHelios infrared heating fully included in the SAP assessment.

The result demonstrated that modern infrared heating is not automatically incompatible with a strong EPC result.

Instead, the rating reflected the combined performance of the building fabric, insulation, ventilation, room zoning, controls and calculated energy demand.

Independent room control allows unoccupied bedrooms or shared spaces to remain unheated while occupied rooms can be controlled according to their own schedules and comfort requirements.

The system also avoids central distribution losses associated with long pipe runs, stored hot water and a central heating plant.

This project provides a practical example of smart infrared heating being used successfully in a large, high-occupancy co-living development.

Frequently asked questions

Does infrared heating reduce EPC ratings?

No. Infrared heating does not automatically reduce an EPC rating. The final result depends on how the full building is assessed, including insulation, ventilation, zoning, controls, hot-water demand and calculated energy use per square metre.

Can infrared heating achieve EPC B?

Yes. This 21-bedroom co-living development in Sunderland achieved a strong EPC B rating with iHelios infrared heating fully included in the SAP assessment.

Why is infrared heating suitable for HMOs and co-living properties?

Infrared heating allows individual rooms to be controlled separately. This suits buildings with staggered occupancy because empty bedrooms and shared spaces do not need to be heated at the same time as occupied areas.

Why is infrared heating sometimes scored poorly in EPC assessments?

It can be assessed using older assumptions that group modern infrared systems with legacy direct-electric heating while overlooking room zoning, advanced controls and improvements to the building fabric.