Split systems · VRF · ventilation
Air conditioning and ventilation contractors across the UK
New layouts change how air moves round a building. We match you with air conditioning and ventilation contractors who design, install and maintain systems.
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Options
Types of air conditioning and ventilation
Split systems
One indoor unit to one outdoor unit. Good for single rooms.
Multi-split
Several indoor units on one outdoor unit.
VRF or VRV
Larger systems that heat and cool different areas at once.
Ventilation
Fresh air, heat recovery and extraction.
What is included
- Split and multi-split air conditioning
- VRF and VRV systems for larger floors
- Fresh air ventilation and heat recovery
- Kitchen and washroom extraction
- Relocating units and grilles to suit new rooms
- Servicing and maintenance
What affects the price
- Size of the space and number of rooms
- Heat from people, equipment and glazing
- Pipe and duct routes, and where outdoor units can go
- Whether the existing system can be adapted
- Controls, and landlord or planning limits on outdoor units
Process
How the job runs
Survey and heat load calculation
Design and consents
Install pipework, units and controls
Commission and hand over
How long? A single split system is often fitted in a day or two. Larger systems take longer.
Questions to ask an installer
- Are your engineers F-gas certified?
- Have you calculated the heat load?
- Where will the outdoor units go?
- Is commissioning and a service visit included?
Rules and safety
Anyone handling refrigerant must hold F-gas certification, and the company must be F-gas registered. Systems above set refrigerant charges need regular leak checks. Air conditioning with a combined output over 12 kW needs an energy inspection, known as TM44, every five years. Fresh air rates are set by Part F of the Building Regulations.
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Questions
Air conditioning and ventilation: common questions
Does a new meeting room need its own unit?
Often, yes. Closing off a room cuts it off from the open-plan system, so it needs its own cooling and fresh air.
Do outdoor units need permission?
Sometimes planning permission, and usually landlord consent. Check both before ordering.
Can the existing system be reused?
Often it can be adapted. A survey will show whether it has the capacity and whether it uses a refrigerant that is being phased out.