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As temperatures rise this summer, keep your passengers cool with air-con… or climate control… or both. See, this is the issue – many people don’t know the difference between the two vehicle cooling systems. If you’re one of those people, then this blog is for you. In this post, we’ll give you the rundown on what both air-con and climate control are, how they work, and which is best for your vehicle.
Air Conditioning
What is it?
The concept of air conditioning inside cars was invented in 1939 by The Packard Motor Company. By the 1970s, almost half of all new cars came with air-con pre- installed. Amazingly, the fundamentals of air-con remain the same today with the same main 3 components: the compressor, the condenser, and the evaporator.
How Does it Work?
All three components push refrigerant through a closed-loop system, allowing it to change from a gas to a liquid and back again. This process occurs in the condenser driven by the compressor attached to the car engine for power.
The condenser dissipates heat and cools the high-pressure refrigerant gas into a liquid. From here, the liquid is stripped of water by the receiver-dryer before entering the thermal expansion valve via a pump.
Here, the liquid is allowed to expand and becomes a low-pressure liquid in order to enter the evaporator within the vehicle interior. The evaporator then turns the refrigerant into a gas which is blown by a fan into the vehicle.
Compared to air conditioning, climate control is far more sophisticated. Climate control systems allow drivers and passengers to manage the interior temperature of their vehicles with accuracy and precision.
Users can select the temperature they require and watch the system automatically alter the rate and amount of cool air entering the vehicle accordingly. Unlike air conditioning, the driver or passengers do not have to manually adjust the airflow every time they feel a change in temperature.
How Does it work?
In order for the system to continuously control the temperature inside the vehicle, a number of sensors are used to gauge how hot or cool the air is. The information from the sensors is then used to determine how much warm or cool air needs to be pumped into the vehicle to maintain the temperature desired by the users. The system is also able to adjust the fan speed and recirculation settings in order to control whether fresh or recirculated air is pumped into the vehicle.
More modern cars may have dual or multi-zone climate control. Multi-zone climate control allows for the temperature of multiple separate zones in the car to be controlled at once. The driver, for instance, could set their own temperature to 17 degrees, while the back seat and passenger area could be warmer at 24 degrees. This is great for particularly quarrelsome passengers, ending sibling feuds over cabin temperatures.
What Are the Differences Between Them?
Air conditioning is more primitive than climate control. While both systems can blow both warm and cool air into a vehicle, only climate control can automatically control a vehicle’s interior temperature. Air conditioning lacks the ability to consistently monitor and maintain air temperature independently of the user’s manual actions.
Climate control, on the other hand, is far more intuitive and easy to use since it requires virtually no manual effort from the user. In this respect, climate control is safer too, as the concentration wasted on fiddling around with air conditioning settings is redirected onto maintaining a safe position on the road.
How to Know Which is Right For You
Different vehicle models will come fitted with different cooling systems. Usually, more modern and expensive models have climate control already installed. If you live in a particularly hot location or spend a lot of time in your car, it might be worth looking into climate control - particularly if you often drive long distances.
The added convenience of not having to adjust the air conditioning can be a big help. What’s more, adding climate control to your car can make it more attractive when you come to sell it.
Driving in heavy rain can be tricky and bring extra risks. Check out our guide for top tips to stay safe and avoid breakdowns if travelling in wet conditions.
Is the UK on the verge of ‘the coldest winter for 50 years?’ Even if El Niño doesn't hit the UK this winter, reduce the risk of a winter breakdown by making sure your car battery is winter-ready.
Your tyre size can be found on the sidewall of your current tyre and is a sequence of numbers and letters. The most common tyre size in the UK is 205/55R16 but there are many variations so it’s important to check your existing tyre first before searching for tyres.
Tip: Take a photo of your existing tyre sidewall to make it easier to identify your tyre size using the guide below.
The first three digits. This displays the width of the tyre in millimetres. A tyre marked 225 will measure 225mm across the tread from sidewall to sidewall.
Aspect Ratio
The fourth and fifth digits of the tyre code that immediately follow the tyre width. The aspect ratio or profile height of the tyre sidewall is expressed as a percentage of the tyre width. So an aspect ratio of 55 for example means that the profile height of the tyre is 55% of its width.
Rim Diameter
The next two digits represent the size of the wheel rim that the tyre can be fitted to. It is also the diameter of the tyre from bead to bead. So a tyre marked 16 will fit on a 16-inch wheel rim.
Speed Rating
The speed rating of a tyre is represented by a letter of the alphabet at the end of the tyre size code and indicates the maximum speed capability of the tyre. Tyres receive a speed rating based on a series of tests which measure the tyres capability to handle a set speed for a prolonged period of time.
Select your tyre speed rating to find out the maximum speed your tyres can maintain.
If you are unsure what speed rating you need, be sure to check your vehicle handbook. Choosing a lower speed rating than that recommended by your vehicle manufacturer could potentially invalidate your insurance.
Load Rating
The load index provides information on the maximum weight capability for the tyre. The load index is a numerical code that can be located just after the tyre size marking and before the speed rating.
Select your load index to find out the maximum load capability for your tyres.
Although not illegal, it is not advisable to have tyres with a lower speed rating or load index than the manufacturer recommended tyre specification for your vehicle, or to have a combination of different tyre construction types. Consult your vehicle handbook to confirm your vehicle’s tyre speed rating and load index as well as any additional requirements.
0800 75 76 77 You can reach our customer care team 6 days a week from 9:00am to 6:00pm on Monday and Thursday, 8:30am to 6:00pm Tuesday, Wednesday and Friday, 8:30am to 5:00pm Saturday, and 10:00am to 4:00pm on Bank Holidays.
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We endeavour to ensure we are displaying the correct tyres for your vehicle. However, we recommend all customers check the tyre size printed on the side wall of their tyres before proceeding with a tyre purchase as occasionally discrepancies do occur. By selecting the tyre sizes above and clicking 'Continue', you are indicating that you have checked your tyre sizes.
Please select your front and rear tyre size before clicking 'Continue'.
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Please note: There is a slope that the vehicle must be driven up to reach the vehicle ramp at this centre. This may prevent us from being able to work on some high-performance vehicles, Tesla vehicles or vehicles that have been lowered. If your vehicle has low ground clearance, please contact the centre team on 01342 314 111 before booking.
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