Thoroughvent Ltd,

6-7 EDEAL Business Centre,

Dittons Business Park,

Dittons Road,

Polegate,

East Sussex,

BN26 6HY.

Registered in England 7452572

www.tvent.co.uk

www.tvent.uk

Website Revised 2025

Air Conditioning and Ventilation Systems.

~ Providing a Breath of Fresh Air! ~

Thoroughvent Ltd,

Thoroughvent Ltd

6-7 EDEAL Business Centre,

Dittons Business Park,

Dittons Road,

Polegate,

East Sussex,

BN26 6HY.

Tel: 01323 483045

Fax: 01323 489010

HVAC and Close Control systems

HVAC (Heating Ventilation and Air Conditioning systems), and Close Control systems are advanced forms of air conditioning systems that incorporate ventilation and heat recovery ventilation systems.
Please see the following page for further information on HVAC and Close Control systems.

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Air Conditioning Systems

Air Conditioning Types

Split System

Split systems comprise 2 major parts. An indoor evaporator unit, and an external condensing unit. These systems are designed to provide energy efficient comfort cooling or heating to a single space where the indoor unit is not required to condition over dispersed areas. Twin split air conditioning systems are also available where two indoor units can be installed to a single outdoor condensing unit.

Twin split indoor units operate in tandem with one another. They provide heating or cooling to a single room, and are operated with a single controller. They are typically used where the space is either larger, or an unusual shape in order to ensure even delivery of cooled or warmed air about the space.

Multi-Split System

Multi-split air conditioning systems have multiple indoor units connected to a single outdoor unit. A pair of refrigeration pipes is connected between each indoor unit, and the outdoor unit. The indoor units can be operated independently of one another to allow simultaneous heating or cooling of multiple rooms, or for larger / unusual shape rooms where standard split and twin split systems may not be suitable.

Whilst Multi-split systems are usually limited in refrigeration pipe work length and indoor and outdoor unit capacity. This makes them ideal for serving smaller offices and houses where multiple areas require simultaneous heating or cooling, with individual user control.

2 Pipe VRF / VRV

2 pipe VRF (Variable Refrigerant Flow) or VRV (Variable Refrigerant Volume) air conditioning systems are designed for applications requiring temperature control across multiple rooms or zones. These systems allow multiple air conditioning units to be connected to a single outdoor condensing unit, making them ideal for larger residential, and commercial buildings.

Multiple outdoor units can also be linked together. This allows a scalable, flexible, and upgradeable air conditioning solution to be created. A single pair of refrigerant pipes runs from the outdoor unit into the building. The main run continues through the building, branching off to each indoor unit. This setup supports efficient temperature regulation in multiple areas using a streamlined piping layout.

3 Pipe VRF / VRV

3 pipe VRF (Variable Refrigerant Flow) or VRV (Variable Refrigerant Volume) air conditioning systems expand on the 2 pipe design by introducing a third refrigerant pipe. This additional pipe, combined with a specialised control and distribution box, enables heat recovery—allowing simultaneous heating and cooling in different rooms or zones.

This makes 3 pipe systems ideal for buildings where individual areas

require independent heat or cool mode adjustment at the same time.

Both 2 pipe and 3 pipe VRF/VRV systems support localised control via

individual room controllers, master control stations, and remote

integration with Building Management Systems (BMS), offering flexible and efficient temperature management for complex environments.

We are able to design Air Conditioning and Ventilation installations for you.