{"id":16249,"date":"2026-05-13T16:27:11","date_gmt":"2026-05-13T14:27:11","guid":{"rendered":"https:\/\/www.lisbonaenergia.com\/?p=16249"},"modified":"2026-05-13T16:27:11","modified_gmt":"2026-05-13T14:27:11","slug":"car-air-conditioning-maintenance-summer-tips","status":"publish","type":"post","link":"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/","title":{"rendered":"Car air conditioning: maintenance and tips for the summer"},"content":{"rendered":"<p>When the real heat arrives, there&#8217;s a universal moment among drivers: you start the car after leaving it parked in the sun for two hours, switch on the air conditioning, and&#8230; either cool air comes out instantly, or you realise something isn&#8217;t right. That second scenario, far too common, is almost always the result of one or two years without servicing the system. And by that point in the year, in the middle of July or August, specialised garages are fully booked and prices go up.<\/p>\n<p>In this article we explain, from the practical perspective of those who attend to drivers every day at a service station, how to properly maintain your car&#8217;s air conditioning, what tips to apply before the summer, and what role good general vehicle maintenance \u2014 including the fuel you use \u2014 plays in the performance of the climate control system.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Tabla de Contenidos<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Car_air_conditioning_how_it_works_and_why_it_requires_maintenance\" >Car air conditioning: how it works and why it requires maintenance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Refrigerant_gas_types_how_to_know_which_one_your_car_uses\" >Refrigerant gas types: how to know which one your car uses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Car_air_conditioning_maintenance_tasks_and_frequency\" >Car air conditioning maintenance: tasks and frequency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#7_practical_tips_for_the_summer\" >7 practical tips for the summer<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#1_Ventilate_before_switching_on_the_AC\" >1. Ventilate before switching on the A\/C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#2_Aim_the_vents_upwards\" >2. Aim the vents upwards<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#3_Park_in_the_shade_whenever_you_can\" >3. Park in the shade whenever you can<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#4_Dont_overuse_the_minimum_temperature\" >4. Don&#8217;t overuse the minimum temperature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#5_Use_recirculation_when_needed\" >5. Use recirculation when needed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#6_Switch_off_the_AC_before_stopping_the_engine\" >6. Switch off the A\/C before stopping the engine<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#7_Use_it_in_winter_too\" >7. Use it in winter too<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Air_conditioning_and_fuel_consumption_the_figure_few_people_calculate\" >Air conditioning and fuel consumption: the figure few people calculate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Warning_signs_when_to_take_the_car_to_the_garage\" >Warning signs: when to take the car to the garage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Comprehensive_car_preparation_for_summer\" >Comprehensive car preparation for summer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Common_mistakes_with_car_air_conditioning\" >Common mistakes with car air conditioning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Conclusion_a_well-maintained_system_means_safety_comfort_and_savings\" >Conclusion: a well-maintained system means safety, comfort and savings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Frequently_asked_questions_about_car_air_conditioning\" >Frequently asked questions about car air conditioning<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#How_much_does_it_cost_to_refill_car_air_conditioning\" >How much does it cost to refill car air conditioning?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Is_it_bad_to_have_the_air_conditioning_always_on\" >Is it bad to have the air conditioning always on?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Can_the_air_conditioning_damage_the_engine_or_increase_mechanical_breakdowns\" >Can the air conditioning damage the engine or increase mechanical breakdowns?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/#Is_it_true_that_air_conditioning_dries_out_the_cars_atmosphere\" >Is it true that air conditioning dries out the car&#8217;s atmosphere?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Car_air_conditioning_how_it_works_and_why_it_requires_maintenance\"><\/span>Car air conditioning: how it works and why it requires maintenance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Car air conditioning doesn&#8217;t generate cold: what it does is <strong>extract heat<\/strong> from the cabin and expel it outside. To achieve this, it uses a closed circuit of refrigerant gas that passes through four main components:<\/p>\n<ul>\n<li><strong>Compressor:<\/strong> compresses the gas, heats it and sets it in circulation. It&#8217;s driven by a belt connected to the car engine.<\/li>\n<li><strong>Condenser:<\/strong> cools the compressed gas and turns it into liquid.<\/li>\n<li><strong>Expansion valve:<\/strong> regulates the flow of refrigerant liquid towards the evaporator.<\/li>\n<li><strong>Evaporator:<\/strong> absorbs heat from the cabin air and cools the atmosphere you breathe.<\/li>\n<\/ul>\n<p>It&#8217;s a closed system but not 100% sealed. Over the years, the refrigerant gas is slowly lost (between 10 and 15% annually under normal conditions), the seals dry out if the system isn&#8217;t used, and the filters become saturated with dust, pollen and bacteria. That&#8217;s why, without maintenance, the A\/C gradually loses effectiveness until one day it simply stops cooling.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Refrigerant_gas_types_how_to_know_which_one_your_car_uses\"><\/span>Refrigerant gas types: how to know which one your car uses<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Current cars mainly use two refrigerant gases, and it&#8217;s worth knowing which one corresponds to yours because <strong>they are not compatible with each other<\/strong>:<\/p>\n<ul>\n<li><strong>R-134a:<\/strong> the most common in vehicles manufactured before 2017. Its use is restricted in new cars due to its environmental impact.<\/li>\n<li><strong>R-1234yf:<\/strong> compulsory in cars registered from 2017 in the European Union. More efficient and with a far lower environmental impact.<\/li>\n<\/ul>\n<p>Mixing one with the other damages the system. To identify which one corresponds to your vehicle, the most reliable approach is to consult the maintenance manual or look for a label under the bonnet, usually near the condenser, where the manufacturer indicates the type and exact amount of gas required by the circuit.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Car_air_conditioning_maintenance_tasks_and_frequency\"><\/span>Car air conditioning maintenance: tasks and frequency<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This table summarises the main maintenance tasks for the climate control system and how often they should be carried out:<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Task<\/th>\n<th scope=\"col\">Recommended frequency<\/th>\n<th scope=\"col\">Who should do it<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Switch on the A\/C for 10-15 min<\/td>\n<td>Once a week, year-round<\/td>\n<td>Yourself<\/td>\n<\/tr>\n<tr>\n<td>Change cabin filter<\/td>\n<td>Every 15,000-20,000 km or annually<\/td>\n<td>Garage or yourself<\/td>\n<\/tr>\n<tr>\n<td>Refrigerant gas refill<\/td>\n<td>Every 2-3 years<\/td>\n<td>Specialised garage<\/td>\n<\/tr>\n<tr>\n<td>Full circuit inspection<\/td>\n<td>Annual, before summer<\/td>\n<td>Specialised garage<\/td>\n<\/tr>\n<tr>\n<td>Evaporator cleaning and disinfection<\/td>\n<td>Every 1-2 years or when bad odours appear<\/td>\n<td>Specialised garage<\/td>\n<\/tr>\n<tr>\n<td>Compressor belt check<\/td>\n<td>Alongside general servicing<\/td>\n<td>Garage<\/td>\n<\/tr>\n<tr>\n<td>Condenser cleaning (external)<\/td>\n<td>When visible dirt is observed<\/td>\n<td>Yourself or garage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Sticking to this schedule is the best guarantee that the system reaches summer working at 100% and that your car doesn&#8217;t surprise you precisely when you need it most.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"7_practical_tips_for_the_summer\"><\/span>7 practical tips for the summer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Beyond professional servicing, there are everyday habits that make a real difference to air conditioning performance during the hot months:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Ventilate_before_switching_on_the_AC\"><\/span>1. Ventilate before switching on the A\/C<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When the car has been in the sun for hours, the cabin can easily exceed 50 \u00b0C. Before switching on the A\/C, open the windows for a couple of minutes to let the trapped hot air out. Forcing the system from the first minute with that interior temperature is the worst thing for the compressor and uses much more fuel.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Aim_the_vents_upwards\"><\/span>2. Aim the vents upwards<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cold air is denser than warm air and tends to fall. If you aim the vents downwards, the cold air stays at foot level and never reaches your head. By pointing them upwards, the cold air falls by gravity and refreshes the whole cabin uniformly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Park_in_the_shade_whenever_you_can\"><\/span>3. Park in the shade whenever you can<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It seems obvious, but it&#8217;s the most underused tip. Parking under a tree, in a covered garage or using a sunshade drastically reduces the initial cabin temperature, which means less effort for the air conditioning and, therefore, lower consumption and less wear.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_Dont_overuse_the_minimum_temperature\"><\/span>4. Don&#8217;t overuse the minimum temperature<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Keeping the A\/C at 16 \u00b0C when it&#8217;s 35 \u00b0C outside is counterproductive. The ideal difference between exterior and interior is <strong>8-10 degrees<\/strong> to avoid thermal shocks and reduce consumption. An interior temperature of 22-24 \u00b0C is usually perfect and much more efficient.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Use_recirculation_when_needed\"><\/span>5. Use recirculation when needed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In traffic jams, smoky areas or when the outside temperature is very high, activating recirculation mode allows the system to cool the air already inside the cabin, which is cooler than the outside air. It improves effectiveness and reduces fuel consumption.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6_Switch_off_the_AC_before_stopping_the_engine\"><\/span>6. Switch off the A\/C before stopping the engine<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Just before reaching your destination, switch off the air conditioning and let the fan continue for a few seconds. This prevents humidity from forming on the evaporator and reduces bad odours at the next start-up.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"7_Use_it_in_winter_too\"><\/span>7. Use it in winter too<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Although it may seem contradictory, switching on the air conditioning for 10-15 minutes once a week in winter keeps the system lubricated, prevents the seals from drying out and extends the life of the compressor. It&#8217;s one of the most cost-effective and least known tips.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Air_conditioning_and_fuel_consumption_the_figure_few_people_calculate\"><\/span>Air conditioning and fuel consumption: the figure few people calculate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Here comes a variable that many drivers underestimate: car air conditioning <strong>uses between 10 and 20% more fuel<\/strong> depending on the model, speed and conditions of use. That is, if your car normally consumes 6 litres per 100 km, with the A\/C at full power you can go up to 7 or 7.2 litres. On a long summer trip, that difference translates into a clearly higher fuel bill.<\/p>\n<p>Three factors reduce that impact:<\/p>\n<ul>\n<li><strong>Climate control system in good condition.<\/strong> A well-maintained A\/C cools faster and demands less from the compressor.<\/li>\n<li><strong>Moderate speed.<\/strong> Above 110 km\/h, driving with windows down increases consumption due to aerodynamics; the A\/C is more efficient.<\/li>\n<li><strong>Quality fuel.<\/strong> Well-filtered fuel improves engine performance, and that&#8217;s especially noticeable when auxiliary systems like the A\/C are working.<\/li>\n<\/ul>\n<p>If you&#8217;re planning a long trip or filling large tanks for your fleet or agricultural operation, opting for services such as <a href=\"https:\/\/www.lisbonaenergia.com\/en\/gasoil-at-home-malaga\/\">diesel home delivery in M\u00e1laga<\/a> or <a href=\"https:\/\/www.lisbonaenergia.com\/en\/gasoil-at-home-granada\/\">diesel home delivery in Granada<\/a> with quality microfiltered fuel is a decision that also has an impact on your vehicle&#8217;s overall performance. Fuel quality and car maintenance go hand in hand.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Warning_signs_when_to_take_the_car_to_the_garage\"><\/span>Warning signs: when to take the car to the garage<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are symptoms indicating that the air conditioning system needs immediate professional attention, not end-of-season:<\/p>\n<ul>\n<li><strong>The air comes out barely cool<\/strong> or takes a long time to cool the cabin.<\/li>\n<li><strong>The compressor makes strange noises<\/strong> (squeaks, rattles, knocking) when starting up.<\/li>\n<li><strong>Smell of damp or mould<\/strong> when switching on the A\/C.<\/li>\n<li><strong>Air with little pressure<\/strong> at the vents, even with the fan at maximum.<\/li>\n<li><strong>Foggy windows<\/strong> hard to clear even with the A\/C running.<\/li>\n<li><strong>Oil stains<\/strong> under the bonnet near the compressor or pipes.<\/li>\n<li><strong>Dashboard warnings<\/strong> indicating automatic climate control faults.<\/li>\n<\/ul>\n<p>Any of these signs justifies a check at a specialised garage. Ignoring them usually turns a small leak into a serious compressor breakdown, which is the most expensive repair of the system (between \u20ac500 and \u20ac1,500 depending on the vehicle).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Comprehensive_car_preparation_for_summer\"><\/span>Comprehensive car preparation for summer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The air conditioning is only one piece of the puzzle. To reach summer with the car in full working order, you should also check:<\/p>\n<ul>\n<li><strong>Fluid levels:<\/strong> coolant, oil, brake fluid and screen wash.<\/li>\n<li><strong>Battery condition:<\/strong> extreme heat is the main enemy of batteries, far more than cold.<\/li>\n<li><strong>Tyre pressure and tread:<\/strong> adjust to the recommended pressure and check they aren&#8217;t worn.<\/li>\n<li><strong>Engine cooling system:<\/strong> hoses, radiator, fan and thermostat working correctly.<\/li>\n<li><strong>Filters:<\/strong> cabin, engine air and fuel.<\/li>\n<li><strong>Wipers:<\/strong> wiper blades degrade quickly in heat.<\/li>\n<\/ul>\n<p>For modern diesel vehicles, it&#8217;s also advisable to keep the AdBlue tank topped up. If you manage fleets or professional vehicles, the <a href=\"https:\/\/www.lisbonaenergia.com\/en\/gas-station-adblue-at-home\/\">AdBlue home delivery<\/a> service is the most convenient option to ensure supply without having to travel. And if you&#8217;d like to explore the technical differences between fuels in greater depth, we recommend our article on <a href=\"https:\/\/www.lisbonaenergia.com\/octanaje-queroseno\/\">octane rating, kerosene and how they differ from petrol and diesel<\/a>, where we explain how each fuel affects real engine performance.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Common_mistakes_with_car_air_conditioning\"><\/span>Common mistakes with car air conditioning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Five mistakes we see many drivers make that reduce the system&#8217;s life:<\/p>\n<ul>\n<li><strong>Not using it in winter.<\/strong> Thinking &#8220;since I don&#8217;t need it, better let it rest&#8221; is exactly the opposite of what the compressor needs.<\/li>\n<li><strong>Refilling the gas yourself with DIY kits.<\/strong> Without professional equipment, leaks aren&#8217;t detected, the exact amount isn&#8217;t respected and the system gets damaged.<\/li>\n<li><strong>Not changing the cabin filter.<\/strong> A saturated filter reduces airflow, forces the fan and worsens the quality of the air you breathe.<\/li>\n<li><strong>Setting the A\/C to maximum from the first minute.<\/strong> The system works better if it&#8217;s switched on at medium speed and gradually adjusted.<\/li>\n<li><strong>Ignoring bad odours.<\/strong> They indicate bacterial growth in the evaporator, a problem easy to solve at the start but expensive if ignored.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion_a_well-maintained_system_means_safety_comfort_and_savings\"><\/span>Conclusion: a well-maintained system means safety, comfort and savings<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Car air conditioning is one of those elements that goes unnoticed when it works and becomes an absolute priority when it fails. Keeping it in good condition isn&#8217;t a luxury: it contributes to road safety (by preventing fatigue, extreme heat and fogging), improves comfort on long journeys and, well managed, reduces fuel consumption compared to a neglected system.<\/p>\n<p>The basic rule is simple: service before summer, use it in winter too, look after the filters, don&#8217;t abuse extreme temperatures and address any warning signs without waiting until the end of the season. With those habits, your car&#8217;s climate control system will last for years in optimal condition and will save you considerably more than what it costs to maintain.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_asked_questions_about_car_air_conditioning\"><\/span>Frequently asked questions about car air conditioning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"How_much_does_it_cost_to_refill_car_air_conditioning\"><\/span>How much does it cost to refill car air conditioning?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The price varies according to the type of gas and the garage, but as a general reference, an R-134a gas refill usually costs between \u20ac50 and \u20ac80, while R-1234yf gas, the more modern one, can range between \u20ac100 and \u20ac180. The difference is explained by the cost of the gas itself: R-1234yf is considerably more expensive than the older R-134a.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_it_bad_to_have_the_air_conditioning_always_on\"><\/span>Is it bad to have the air conditioning always on?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No, quite the opposite. What&#8217;s harmful is precisely not using it. The system is designed to operate regularly, and continuous use keeps components lubricated, prevents seals from drying out and extends the compressor&#8217;s life. The only thing to moderate is the temperature, which shouldn&#8217;t drop much more than 8-10 \u00b0C below the exterior.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_the_air_conditioning_damage_the_engine_or_increase_mechanical_breakdowns\"><\/span>Can the air conditioning damage the engine or increase mechanical breakdowns?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Not directly. The compressor is driven by a belt connected to the engine, so it does mean a slight additional effort, but it&#8217;s perfectly integrated into the vehicle&#8217;s design. What can generate problems is a compressor in poor condition, since its seizure can break the multifunction belt and disable the power steering and alternator.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_it_true_that_air_conditioning_dries_out_the_cars_atmosphere\"><\/span>Is it true that air conditioning dries out the car&#8217;s atmosphere?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The A\/C system reduces the humidity of the cabin air, which in some people can generate dryness in the throat and eyes during long journeys. To compensate, it&#8217;s worth maintaining adequate hydration during the trip and, if the car has climate control with humidity regulation, adjusting it to intermediate levels.<\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much does it cost to refill car air conditioning?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The price varies according to the type of gas and the garage, but as a general reference, an R-134a gas refill usually costs between \u20ac50 and \u20ac80, while R-1234yf gas, the more modern one, can range between \u20ac100 and \u20ac180. 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That second scenario, far too common, is almost always the result of&#8230;<\/p>\n","protected":false},"author":1,"featured_media":16251,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[8],"tags":[],"class_list":["post-16249","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Car air conditioning: maintenance and tips for summer - Lisbona Oil S.L.<\/title>\n<meta name=\"description\" content=\"Learn how to maintain your car&#039;s air conditioning in summer: servicing, gas refill, fuel savings and practical tips for travelling.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lisbonaenergia.com\/en\/car-air-conditioning-maintenance-summer-tips\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Car air conditioning: maintenance and tips for summer - 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