Air conditioning spares are replacement parts and accessories for air conditioning units and related equipment, such as remote controls, fans, flexible hoses and connectors. Most spares are made for one manufacturer's range, so identifying the equipment correctly matters more than anything else.
Identify the unit first
Find the nameplate on the indoor or outdoor unit and note the model name and serial number; the model is often also printed on the warranty certificate. Do not rely on the remote control for this, because a remote carries its own model number, which is different from the unit's. With the unit's model to hand, check the manufacturer's parts listing or manual for the correct part number, and only fit a replacement that is listed for your model. For hoses and connectors, match the connection size and type, the length and the material, such as braided stainless steel, to the part you are replacing.
Refrigerant and electrical work
Many repairs involve the sealed refrigerant circuit. By law, installing, servicing, maintaining, repairing, leak checking or decommissioning stationary air conditioning and heat pump systems that contain F gas must be done by someone holding the right F gas qualification, and companies servicing other people's equipment must also be certified. Switch off and isolate the power before working on any electrical part. In England, new circuits and some other fixed wiring work in homes are notifiable under Part P of the Building Regulations: they must be done by a registered competent person or notified to building control.
For complete units and related products, see air conditioning and ventilation.