Air Conditioning FAQ's

It’s recommended that you have your vehicle’s air conditioning re-gassed at least every 2 years to keep it running efficiently. 

It is a common myth that air conditioning should only be used in the Summer months. You should run your air conditioning periodically, even in the winter. The dehumidified dry air produced by your air-con can clear a windscreen much quicker than warm air.

We pressure test all A/C systems with nitrogen prior to filling an empty system. Nitrogen is an inert gas which is less harmful to the environment as it makes up 78% of our atmosphere. This pressure test allows us to search for any leaks within the system and repair them accordingly. If there is a leak we will aim to locate it and report with full costings of any repairs required.

A vehicle may have a correct gas pressure but there are other faults causing the A/C to stop working. We test the system to find your fault and report back to you with costings for any repairs needed.

Vehicles prior to 2017 used a gas known as R134a. As of 2017 a new type of gas, HFO-1234yf, is required by law for all new vehicles. The new gas produces 98% fewer climate damaging pollutants so is a great step forward for the motor industry and environment.
We are able to service vehicles with both types of gases and if you’re unsure which gas your vehicle runs on, we can take a quick look and let you know.

Over time condensation builds up on the evaporator and becomes a breeding ground for bacteria and fungi. If your A/C doesn’t smell as fresh as it once did, this is the reason, and we can treat the cause. When not in regular use, run your air conditioning for 10 minutes every week.

Unusual noises could indicate anything from low gas to a worn-out compressor. Our experienced technicians at John Delany Motors can diagnose and repair any issues quickly, ensuring your A/C runs smoothly.

To maintain optimal performance, regularly run your A/C system, keep the cabin air filter clean, and ensure refrigerant levels are topped up. Routine servicing will also help maintain efficiency and prolong the lifespan of the system.

Yes, running the air conditioning can impact fuel consumption, as it increases the engine’s demand. However, using A/C at motorway speeds is often more fuel-efficient than driving with the windows down, which increases drag.

Signs of a refrigerant leak include reduced cooling performance, hissing noises when the A/C is off, and visible oil stains near A/C components. If you suspect a leak, it’s crucial to get it checked and repaired promptly.

This removes bacteria, fungi, and odours from your system by disinfecting the evaporator and vents. We offer professional antibacterial treatments to keep your cabin air fresh and allergen-free.

This depends on your vehicle’s manufacturer and warranty terms. Typically, wear and tear or gas refills are not covered, but major faults with the compressor or system components might be. Always check with your provider.