Qualified Mobile Car Air Conditioning Service Engineers specialising in maintenance repair and servicing of car air conditioning covering Shrewsbury, Telford, Shropshire and Mid Wales areas.
FGAS class 1 qualified service engineer for fault diagnostics, refrigerant recovery and repair of car air conditioning systems. Car Van Minibus Truck Tractor Cab Air Conditioning and Refrigeration.
Mobile service and repair of vehicle R134a air conditioning systems on site (where component access allows)
Telephone 01743 884888 www.autoelectrics.net
Supply of car air conditioning repairs service and components in Shropshire
Car air conditioning climate control systems maintain vehicle cabin temperature to ensure a comfortable journey enhancing driver and passenger safety in hot weather.
Air entering the passenger compartment is filtered by the pollen filter before passing over the evaporator heat exchanger which transfers heat from the air reducing air temperature and dehumidifying.
The air conditioner can remove moisture from the air allowing demisting of windscreen to provide clearer vision whilst allowing car windows to remain closed
Many HFC Car air conditioning refrigerant gases have high global warming potential (gwp) and must only be recovered from vehicles by F-Gas qualified personnel.
GWP is a quantitive reference of the global warming effect of a refrigerant by kg in comparison to Carbon dioxide which has gwp 1.
Legislative framework is designed to phase out refrigerant gases with highest gwp . Restrictions of refrigerant use has led to substantial increases in refrigerant prices.
R12 or Freon 12 - older vehicle (pre 19809s) aircon systems may have been originally filled with R12 (now a banned refrigerant). Some retrofit kits are available to convert R12 systems to R134a but we do not offer this facility.
R134a - most commonly used HFC vehicle refrigerant in passenger car air conditioning systems manufactured up to 2017. We have facilities for Recovery, Recharge or Regas, of most vehicles fitted with R134a air conditioning systems. HFC refrigerants must only be recovered by Fgas qualified personnel.
R1234yf - Latest vehicles from 2017 generally use refrigerant gas R1234yf which has similar cooling capability as R134a but much lower gwp. 1234YF (slightly flammable) was developed as a low gwp alternative to R134a.
R477 - Carbon dioxide is being developed as a vehicle air conditioning refrigerant by some european manufacturers. CO2 systems operate at considerably higher pressure than older air conditioning systems which introduces new risks.
The refrigerant which has been used in the car ac system is usually identified by labelling on the vehicle body together with regas quantity.
The car air conditioning system should be gas tight but marginal loss of refrigeant can occur over time due to minor leakage through hoses, seals, and components. If refrigerant gas leakage occurs this can allow air to enter the system introducing moisture and potential damage and eventual failure to cool.
If moisture enters a car air conditioning system airborn water may freeze causing refrigerant circuit components eg txv to block with ice. The oil used to lubricate the car air condtioning compressor is hydroscopic therefore absorbs moisture allowing acids to form which can corrode system copmonents and lead to breakdown.
Moisture build up on the evaporator (heat exchanger generally fitted behind dash) and within air vents can breed bacteria causing musty smells within the car interior.
One of he main reasons for car air conditioning to stop working is due to loss of refrigerant gas through leakage. There is little point in refilling an air conditioning system which leaks until it has been repaired properly and leak tested. Air conditioning systems can be checked by both vacuum testing and pressure testing and also with ultra violet dye detection. Electrical faults may prevent the compressor clutch engaging or incorrect temperature control. Internal blockages may occur within the refrigerant circuit, or external blockages stopping air flow over heat exchanger radiators may occur particularly if the vehicle is used in dusty environments. Mechanical faults may occur with components.
Shrewsbury - Shropshire - Telford and Wrekin - Shifnal - Market Drayton - Newport - Wem - Whitchurch - Much Wenlock - Ludlow - Welshpool - Oswestry - Ellesmere - Newtown