Variable refrigerant flow systems for larger commercial buildings — connecting dozens of indoor units to one or more outdoor units with individual zone control and simultaneous heating and cooling across the building. We design and install VRF and VRV systems for businesses across Leicester.
VRF (variable refrigerant flow) — also known as VRV — is the technology of choice for larger commercial buildings requiring climate control across many zones from a minimal number of outdoor units. Unlike a conventional multi-split system which is limited to around eight indoor units, a VRF system can connect 20, 30, 50 or more indoor units to a pair of outdoor units, with long refrigerant pipe runs and significant height differences possible on selected systems, subject to manufacturer specifications and system design. This makes it practical for multi-storey office buildings, hotels, retail centres and educational facilities.
Heat recovery VRF systems go further — allowing some zones to be in cooling mode while others are simultaneously in heating mode. Heat extracted from the cooling zones is recovered and redistributed to the heating zones rather than rejected to the outside air. This significantly reduces energy consumption in buildings with mixed exposure — south-facing offices cooling while north-facing rooms still need heating, for example. We design VRF systems from first principles, specifying outdoor unit capacity, branch box sizing, indoor unit types and pipe routing to meet your building's requirements.
VRF systems require careful engineering design — outdoor unit selection, pipe sizing, branch box layout and refrigerant charge calculation all need to be correct for the system to operate efficiently and reliably. We carry out a full design before quoting so you know exactly what you're getting.
We survey your building, assess the zone requirements and produce a VRF system design and specification. No obligation — practical engineering advice from our commercial team.
Get a Free QuoteThe most scalable and energy-efficient climate control solution for larger commercial buildings.
Serve an entire building from one or two outdoor units — fewer penetrations, less external plant.
Each specified room or zone can have independent temperature control, subject to the final system design.
Heat recovery VRF redistributes heat from cooling zones to heating zones — dramatically reducing energy use.
Some VRF systems allow long refrigerant pipe runs, subject to manufacturer specifications and system design.
Central controllers and BMS interfaces allow facility managers to monitor and control the whole system.
Inverter-driven compressors match output precisely to load — highly efficient at part load conditions.
VRF is suited to any multi-zone commercial building requiring scalable, efficient climate control.
Multi-floor office buildings with independent zone control for open plan, offices and meeting rooms.
Guest rooms, corridors, restaurants and conference facilities served from a central plant.
Large retail units and shopping centres requiring high-capacity zoned cooling and heating.
Schools, colleges and universities with many independently used classrooms and offices.
Clinical environments with specific temperature and air quality requirements per zone.
Gyms, sports centres and leisure complexes with varying occupancy and heat loads per area.
Buildings with retail, office and residential zones requiring independent control per tenure.
VRF designed from the outset for new commercial construction — first fix through to commissioning.
A structured engineering approach from building survey through to commissioned system.
We survey the building, establish the zone layout, heat loads and pipe routing constraints.
We produce a full VRF design including outdoor unit selection, branch box layout, pipe sizing and indoor unit specification.
Outdoor units, refrigerant pipework, branch boxes and indoor units installed and connected to controls.
Full system commissioning including refrigerant charge verification, zone testing and BMS integration. O&M documentation provided.
VRF (variable refrigerant flow) and VRV (variable refrigerant volume — a trademark of Daikin) refer to the same underlying technology. VRV is Daikin's proprietary name for their VRF system range. All other manufacturers use the generic VRF terminology. The technology is essentially identical.
Depending on the outdoor unit size and configuration, a single VRF outdoor unit can connect between 8 and 64 indoor units. Multiple outdoor units can be combined for even larger installations. The total connected indoor unit capacity is typically limited to 130% of the outdoor unit capacity to allow for diversity.
Yes. All major VRF manufacturers provide BMS interface options — typically BACnet, Modbus or proprietary gateways — that allow the VRF system to be monitored and controlled from a central BMS. Centralised controllers also allow facility managers to set schedules and monitor all zones from a single display without full BMS integration.
Request a free survey or ask a technical question. We'll confirm the right next step for your property.
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