Audi A4 Ac Blowing Hot Air

Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. Moisture in the AC system can also cause an AC blows cold then warm condition. The center vents get colder much quicker than the outside vents, and the outside vents will blow warm air even after driving for a few miles. 2005 audi a4 ac evaporator is cold but blows hot air could that be the heater control valve | Find answers to your 2005 Audi A4 question. One of the most common parts related to AC issues is the compressor. 0T Sedan FWD. The fans are operating but you cannot turn off economy mode. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. The AC will work fine around town, but on long road trips, it stops blowing cold air after about two hours into the trip. I checked the coolant presure and it is where it should be. Hi My 2004 Audi A6 (C6) 3. I have a 2004 Audi A4 Avant. A friend told me tat it mite need Freon. Or even in the hot summer, where it seems like your vents have small volcanoes in them. A4 (B7 Platform) Discussion - AC won't blow cold air - Hey Guys, I have a 2007 A4 2. Not for sure what to check next.   It happened first 2 years ago and is now happening about twice a week. air conditioning - cold then warm, turn off, cold then warm Hi Everyone, I noticed last week that when I turn on the A/C, the air blows really cold (like it has for the past 130k miles) but then slowly warms up until it's like A/C is not working. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. Why does the AC blow warm air at idle? - 2008 Audi A4. One of the most common parts related to AC issues is the compressor. In this guide, you will find instructions on how to charge the A/C system on Audi vehicles. 0T Sedan FWD. it will blow out hot/warm air for a short while if fan has been off for a while which seems to suggest some heat is getting in to the exchanger, albeit slowly. The air is still blowing at that point, but it is … read more. Hi My 2004 Audi A6 (C6) 3. Audi A6 A/C problem I own a Audi A6 that will blow hot air out the side vents while the A/C is on. / Audi / A4 / why is a/c blowing hot air 1 why is a/c blowing hot air. Or even in the hot summer, where it seems like your vents have small volcanoes in them. Could be a stuck door too. I have checked all the fuses on the main fuse panel (located inside the driver side dashboard). Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. A4 (B7 Platform) Discussion - AC won't blow cold air - Hey Guys, I have a 2007 A4 2. When the air conditioner in your 2007 Audi A4 starts blowing hot air, you likely have a freon leak. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". I checked the coolant presure and it is where it should be. The air is still blowing at that point, but it is … read more. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. It can not cool, but it cannot blow hot air. air conditioning - cold then warm, turn off, cold then warm Hi Everyone, I noticed last week that when I turn on the A/C, the air blows really cold (like it has for the past 130k miles) but then slowly warms up until it's like A/C is not working. Audi A4 heater blowing cold on one side!?!?!? air to feet, air to screen, and full heat to full cooling etc. In this guide, you will find instructions on how to charge the A/C system on Audi vehicles. I checked the coolant presure and it is where it should be. So I am in Texas and it is now summer, and my AC only blows hot air. / Audi / A4 / why is a/c blowing hot air 1 why is a/c blowing hot air. My A/C system on my 2004 Audi works fine for a few hours then, it totally stops working or blowing air, a few seconds later it slowly starts up again. Two, the engine is not getting hot enough to generate heat. This article applies to the Audi A6, A4, A3 and Q5/Q7 (2004-2010). One, the leaking coolant and the lesser amount of coolant in the system reduces heat output. The most common symptom that your Audi is low on refrigerant is that hot air blows even when the temperature is set to cold. AUDI HVAC issues Explained - Passender or Driver side stuck blowing HOT or A/C COLD. When the air conditioner in your 2007 Audi A4 starts blowing hot air, you likely have a freon leak. I have a 2004 Audi A4 Avant. In the winter, we don't use AC often and we tend to turn off the AC until the Spring came and it blows hot air, my setting for AC ECON OFF doesn't even stay because the system turns it ON automatically due to insufficient AC freon pressure measured by G65 High Pressure Sensor (8E0-959-126 now 3R0-959-126). This means that there is enough coolant in the system, but it is just not getting hot enough. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. The air is still blowing at that point, but it is … read more. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. Currently the air conditioning blows only hot air and the economy mode light will not turn off. The center vents get colder much quicker than the outside vents, and the outside vents will blow warm air even after driving for a few miles. Problem with the air conditioning. A4 heater, only blowing cool air. Cold is the absence of heat ! for the AC to function it must have hot air moved across the evaporator, the expanding freon removes that heat. Hot air despite the Auto AC set to low? My car started blowing hot air from passenger side vent during our trip to Florida earlier this year. If that is the case ill take care of but an Audi repairs are as we al know very expensive. Any ideas on what it may be? Any help would be very much appreciated. It really is a bother when the temperature drops and you turn your heater on, only for it to spew out the cold winter breeze. Just when I thought nothing else could go wrong with my car, my ac is blowing hot air. Car is still blowing hot air. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. I have checked all the fuses on the main fuse panel (located inside the driver side dashboard). Could be a stuck door too. / Audi / A4 / why is a/c blowing hot air 1 why is a/c blowing hot air. Or even in the hot summer, where it seems like your vents have small volcanoes in them. The air is still blowing at that point, but it is … read more. One, the leaking coolant and the lesser amount of coolant in the system reduces heat output. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. Why does the AC blow warm air at idle? - 2008 Audi A4. Two, the engine is not getting hot enough to generate heat. It really is a bother when the temperature drops and you turn your heater on, only for it to spew out the cold winter breeze. Also, sometimes the A/C does not turn on (blows hot air) and i have to cycle the system on and off, and/or mess with the 'zone' buttons (the ones that concentrate air to different vents), and then it springs into action, albeit still not very cold. The AC will work fine around town, but on long road trips, it stops blowing cold air after about two hours into the trip. A4 heater, only blowing cool air. So even if the AC system system works OK, the doors in the dash must now provide a path for the hot interior air-across the evap and back to the cabin. In this guide, you will find instructions on how to charge the A/C system on Audi vehicles. Problem with the air conditioning. Q: 2013 A6 Quattro 3. How to fix Audi HVAC pump - when the air blows hot. Car is still blowing hot air. It can not cool, but it cannot blow hot air. If your A/C is blowing hot air, there is a chance that the system is low on freon and the system needs to be refilled. This article applies to the Audi A6, A4, A3 and Q5/Q7 (2004-2010). If that is the case ill take care of but an Audi repairs are as we al know very expensive. The HVAC system on. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. So I am in Texas and it is now summer, and my AC only blows hot air. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. Moisture in the AC system can also cause an AC blows cold then warm condition. / Audi / A4 / why is a/c blowing hot air 1 why is a/c blowing hot air. The AC will work fine around town, but on long road trips, it stops blowing cold air after about two hours into the trip. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. Not for sure what to check next. Any ideas on what the problem could be?. It really is a bother when the temperature drops and you turn your heater on, only for it to spew out the cold winter breeze. Two, the engine is not getting hot enough to generate heat. 0T quattro and the AC stopped blowing cold air. A friend told me tat it mite need Freon. Q: 2013 A6 Quattro 3. Any ideas on what the problem could be?. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Audi A6 A/C problem I own a Audi A6 that will blow hot air out the side vents while the A/C is on. Only when the car is moving does the air get colder and even then it never gets ice cold. I have been having an AC issue on my 2019 Jetta S with the manual trans. The fans are operating but you cannot turn off economy mode. Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. Hot air despite the Auto AC set to low? My car started blowing hot air from passenger side vent during our trip to Florida earlier this year. Changed the AC compressor, receiver dryer, value and flush. I have a 2004 Audi A4 Avant. Could be a stuck door too. It blows hot air, but it's also 110 degrees outside; who knows if it is just regular air blowing which wouldn't be hot if not affected by outdoor temps. When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. Not for sure what to check next. So I am in Texas and it is now summer, and my AC only blows hot air. A4 (B7 Platform) Discussion - AC won't blow cold air - Hey Guys, I have a 2007 A4 2. A4 heater, only blowing cool air. This article applies to the Audi A6, A4, A3 and Q5/Q7 (2004-2010). When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. 0T quattro and the AC stopped blowing cold air. Any ideas on what it may be? Any help would be very much appreciated. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. 0 AC blows hot air. The fans are operating but you cannot turn off economy mode. Why does the AC blow warm air at idle? - 2008 Audi A4. Changed the AC compressor, receiver dryer, value and flush. In the winter, we don't use AC often and we tend to turn off the AC until the Spring came and it blows hot air, my setting for AC ECON OFF doesn't even stay because the system turns it ON automatically due to insufficient AC freon pressure measured by G65 High Pressure Sensor (8E0-959-126 now 3R0-959-126). 0 TDi Quattro has started to on occasion blow very hot air through the drivers side dash vent and the centre rear vent. Only when the car is moving does the air get colder and even then it never gets ice cold. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". Hi My 2004 Audi A6 (C6) 3. Doesn't work that way. it will blow out hot/warm air for a short while if fan has been off for a while which seems to suggest some heat is getting in to the exchanger, albeit slowly. Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. Also, sometimes the A/C does not turn on (blows hot air) and i have to cycle the system on and off, and/or mess with the 'zone' buttons (the ones that concentrate air to different vents), and then it springs into action, albeit still not very cold. It can not cool, but it cannot blow hot air. AUDI HVAC issues Explained - Passender or Driver side stuck blowing HOT or A/C COLD. So even if the AC system system works OK, the doors in the dash must now provide a path for the hot interior air-across the evap and back to the cabin. Why does the AC blow warm air at idle? - 2008 Audi A4. I checked the coolant presure and it is where it should be. A friend told me tat it mite need Freon. / Audi / A4 / why is a/c blowing hot air 1 why is a/c blowing hot air. Audi A4 heater blowing cold on one side!?!?!? air to feet, air to screen, and full heat to full cooling etc. 0 AC blows hot air. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. If that is the case ill take care of but an Audi repairs are as we al know very expensive. Or even in the hot summer, where it seems like your vents have small volcanoes in them. At no point does it blow cold air. The most common symptom that your Audi is low on refrigerant is that hot air blows even when the temperature is set to cold. 0T Sedan FWD. The fans are operating but you cannot turn off economy mode. Audi A6 A/C problem I own a Audi A6 that will blow hot air out the side vents while the A/C is on. air conditioning - cold then warm, turn off, cold then warm Hi Everyone, I noticed last week that when I turn on the A/C, the air blows really cold (like it has for the past 130k miles) but then slowly warms up until it's like A/C is not working. i checked my compressor against a picture of what the supposedly 'bad' compressors are supposed. If your A/C is blowing hot air, there is a chance that the system is low on freon and the system needs to be refilled. So even if the AC system system works OK, the doors in the dash must now provide a path for the hot interior air-across the evap and back to the cabin. Or even in the hot summer, where it seems like your vents have small volcanoes in them. Also, sometimes the A/C does not turn on (blows hot air) and i have to cycle the system on and off, and/or mess with the 'zone' buttons (the ones that concentrate air to different vents), and then it springs into action, albeit still not very cold. air conditioning - cold then warm, turn off, cold then warm Hi Everyone, I noticed last week that when I turn on the A/C, the air blows really cold (like it has for the past 130k miles) but then slowly warms up until it's like A/C is not working. The most common symptom that your Audi is low on refrigerant is that hot air blows even when the temperature is set to cold. I checked the coolant presure and it is where it should be. If your car has a cabin air filter and you think you might have an evaporator freeze up problem, start by checking the condition of your cabin air filter. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The heater blowing cold air can be caused by two different types of problems. At no point does it blow cold air. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". Any ideas on what it may be? Any help would be very much appreciated. Changed the AC compressor, receiver dryer, value and flush. Could be a stuck door too. Q: 2013 A6 Quattro 3. Could be a stuck door too. Audi A4 heater blowing cold on one side!?!?!? air to feet, air to screen, and full heat to full cooling etc. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. Hot air despite the Auto AC set to low? My car started blowing hot air from passenger side vent during our trip to Florida earlier this year. Q: 2013 A6 Quattro 3. Audi A6 A/C problem I own a Audi A6 that will blow hot air out the side vents while the A/C is on. At no point does it blow cold air. I have checked all the fuses on the main fuse panel (located inside the driver side dashboard). This means that there is enough coolant in the system, but it is just not getting hot enough. Car is still blowing hot air. It blows hot air, but it's also 110 degrees outside; who knows if it is just regular air blowing which wouldn't be hot if not affected by outdoor temps. My local mechanic says it's most likely the valve on the heater side of the AC control. Changed the AC compressor, receiver dryer, value and flush. 0 TDi Quattro has started to on occasion blow very hot air through the drivers side dash vent and the centre rear vent. Just when I thought nothing else could go wrong with my car, my ac is blowing hot air. The most common symptom that your Audi is low on refrigerant is that hot air blows even when the temperature is set to cold. Moisture in the AC system can also cause an AC blows cold then warm condition. Or even in the hot summer, where it seems like your vents have small volcanoes in them. Any ideas on what the problem could be?. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. Problem with the air conditioning. At no point does it blow cold air. Two, the engine is not getting hot enough to generate heat. If your A/C is blowing hot air, there is a chance that the system is low on freon and the system needs to be refilled. A friend told me tat it mite need Freon. 0T Sedan FWD. I have a 2004 Audi A4 Avant. If that is the case ill take care of but an Audi repairs are as we al know very expensive. Could be a stuck door too. Hi My 2004 Audi A6 (C6) 3. Moisture in the AC system can also cause an AC blows cold then warm condition. Audi A6 - Air con blowing very hot. So I am in Texas and it is now summer, and my AC only blows hot air. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. This article applies to the Audi A6, A4, A3 and Q5/Q7 (2004-2010). My local mechanic says it's most likely the valve on the heater side of the AC control. Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. 0 AC blows hot air. So even if the AC system system works OK, the doors in the dash must now provide a path for the hot interior air-across the evap and back to the cabin. Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. I have been having an AC issue on my 2019 Jetta S with the manual trans. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. it will blow out hot/warm air for a short while if fan has been off for a while which seems to suggest some heat is getting in to the exchanger, albeit slowly. Any ideas on what the problem could be?. Doesn't work that way. Hi My 2004 Audi A6 (C6) 3. The fans are operating but you cannot turn off economy mode. How to fix Audi HVAC pump - when the air blows hot. I have a 2003 Audi A4 1. i checked my compressor against a picture of what the supposedly 'bad' compressors are supposed. The air is still blowing at that point, but it is … read more. It blows hot air, but it's also 110 degrees outside; who knows if it is just regular air blowing which wouldn't be hot if not affected by outdoor temps. 2005 audi a4 ac evaporator is cold but blows hot air could that be the heater control valve | Find answers to your 2005 Audi A4 question. Also, sometimes the A/C does not turn on (blows hot air) and i have to cycle the system on and off, and/or mess with the 'zone' buttons (the ones that concentrate air to different vents), and then it springs into action, albeit still not very cold. When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. except it'll be the furthest passenger side vent blowing as hot as it can for a. So I am in Texas and it is now summer, and my AC only blows hot air. It can not cool, but it cannot blow hot air. Could be a stuck door too. Changed the AC compressor, receiver dryer, value and flush. In the winter, we don't use AC often and we tend to turn off the AC until the Spring came and it blows hot air, my setting for AC ECON OFF doesn't even stay because the system turns it ON automatically due to insufficient AC freon pressure measured by G65 High Pressure Sensor (8E0-959-126 now 3R0-959-126). Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. I took it into our local shop and they told me that I needed a new AC Compressor, and it would run me about $1200-1300 parts and labor. How to fix Audi HVAC pump - when the air blows hot. If that is the case ill take care of but an Audi repairs are as we al know very expensive. Audi A6 A/C problem I own a Audi A6 that will blow hot air out the side vents while the A/C is on. The AC will work fine around town, but on long road trips, it stops blowing cold air after about two hours into the trip. One of the most common parts related to AC issues is the compressor. i checked my compressor against a picture of what the supposedly 'bad' compressors are supposed. If your car has a cabin air filter and you think you might have an evaporator freeze up problem, start by checking the condition of your cabin air filter. So even if the AC system system works OK, the doors in the dash must now provide a path for the hot interior air-across the evap and back to the cabin. In this guide, you will find instructions on how to charge the A/C system on Audi vehicles. AUDI HVAC issues Explained - Passender or Driver side stuck blowing HOT or A/C COLD. Also, sometimes the A/C does not turn on (blows hot air) and i have to cycle the system on and off, and/or mess with the 'zone' buttons (the ones that concentrate air to different vents), and then it springs into action, albeit still not very cold. I took it into our local shop and they told me that I needed a new AC Compressor, and it would run me about $1200-1300 parts and labor. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. air conditioning - cold then warm, turn off, cold then warm Hi Everyone, I noticed last week that when I turn on the A/C, the air blows really cold (like it has for the past 130k miles) but then slowly warms up until it's like A/C is not working. Any ideas on what it may be? Any help would be very much appreciated. 2013 Audi Q5 Aircon blowing hot air only - HI, My 2013 Audi Q5 started blowing out hot air. Currently the air conditioning blows only hot air and the economy mode light will not turn off. In the winter, we don't use AC often and we tend to turn off the AC until the Spring came and it blows hot air, my setting for AC ECON OFF doesn't even stay because the system turns it ON automatically due to insufficient AC freon pressure measured by G65 High Pressure Sensor (8E0-959-126 now 3R0-959-126). If your car has a cabin air filter and you think you might have an evaporator freeze up problem, start by checking the condition of your cabin air filter. When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. If that is the case ill take care of but an Audi repairs are as we al know very expensive. Not for sure what to check next. Audi A6 - Air con blowing very hot. Could be a stuck door too. A friend told me tat it mite need Freon. The AC will work fine around town, but on long road trips, it stops blowing cold air after about two hours into the trip. In this guide, you will find instructions on how to charge the A/C system on Audi vehicles.   It happened first 2 years ago and is now happening about twice a week. 0 AC blows hot air. I checked the coolant presure and it is where it should be. Changed the AC compressor, receiver dryer, value and flush. it will blow out hot/warm air for a short while if fan has been off for a while which seems to suggest some heat is getting in to the exchanger, albeit slowly. Problem with the air conditioning. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. At no point does it blow cold air. Currently the air conditioning blows only hot air and the economy mode light will not turn off. Only when the car is moving does the air get colder and even then it never gets ice cold. Report; Follow; Asked by gsandoval Jun 07, 2015 at 11:44 PM about the 2008 Audi A4 2. Hot air despite the Auto AC set to low? My car started blowing hot air from passenger side vent during our trip to Florida earlier this year.   It happened first 2 years ago and is now happening about twice a week. A friend told me tat it mite need Freon. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. One, the leaking coolant and the lesser amount of coolant in the system reduces heat output. I have been having an AC issue on my 2019 Jetta S with the manual trans. How to fix Audi HVAC pump - when the air blows hot. A4 heater, only blowing cool air. Any time you lose refrigerant from your car's AC system, that leak allows air and moisture to enter. 2005 audi a4 ac evaporator is cold but blows hot air could that be the heater control valve | Find answers to your 2005 Audi A4 question. Audi A6 - Air con blowing very hot. Could be a stuck door too. The HVAC system on. I have a 2003 Audi A4 1. I took it into our local shop and they told me that I needed a new AC Compressor, and it would run me about $1200-1300 parts and labor. My A/C system on my 2004 Audi works fine for a few hours then, it totally stops working or blowing air, a few seconds later it slowly starts up again. Doesn't work that way. I have he climatronic double din unit in the car and when both driver and passenger are set to low, it just blows hot air. The fans are operating but you cannot turn off economy mode. 0T quattro and the AC stopped blowing cold air. If your A/C is blowing hot air, there is a chance that the system is low on freon and the system needs to be refilled. it will blow out hot/warm air for a short while if fan has been off for a while which seems to suggest some heat is getting in to the exchanger, albeit slowly. If that is the case ill take care of but an Audi repairs are as we al know very expensive. When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. We left the car sitting for a week at home while on vacation, and today the a/c suddenly quit working. 0 AC blows hot air. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. A4 heater, only blowing cool air. My local mechanic says it's most likely the valve on the heater side of the AC control. i checked my compressor against a picture of what the supposedly 'bad' compressors are supposed. The heater blowing cold air can be caused by two different types of problems. It can not cool, but it cannot blow hot air. When my Jetta sits for a while, and the ambient temperature gets above 79F, the air takes a long time to get cold. Q: 2013 A6 Quattro 3. In the winter, we don't use AC often and we tend to turn off the AC until the Spring came and it blows hot air, my setting for AC ECON OFF doesn't even stay because the system turns it ON automatically due to insufficient AC freon pressure measured by G65 High Pressure Sensor (8E0-959-126 now 3R0-959-126). I took it into our local shop and they told me that I needed a new AC Compressor, and it would run me about $1200-1300 parts and labor.   The air is so hot that the metal around the vents becomes too hot to touch. So I am in Texas and it is now summer, and my AC only blows hot air. A4 heater, only blowing cool air. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. When the air conditioner in your 2007 Audi A4 starts blowing hot air, you likely have a freon leak. 0 TDi Quattro has started to on occasion blow very hot air through the drivers side dash vent and the centre rear vent. Not for sure what to check next. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". Changed the AC compressor, receiver dryer, value and flush. I have checked all the fuses on the main fuse panel (located inside the driver side dashboard). Audi A6 - Air con blowing very hot. Q: 2013 A6 Quattro 3. AUDI HVAC issues Explained - Passender or Driver side stuck blowing HOT or A/C COLD. AC is blowing hot air VW MKIV-A4 TDIs (VE and PD) It is physically impossible for "A/C to blow hot". It blows hot air, but it's also 110 degrees outside; who knows if it is just regular air blowing which wouldn't be hot if not affected by outdoor temps. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. My local mechanic says it's most likely the valve on the heater side of the AC control. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. Or even in the hot summer, where it seems like your vents have small volcanoes in them. The air is still blowing at that point, but it is … read more. How to fix Audi HVAC pump - when the air blows hot. 0 TDi Quattro has started to on occasion blow very hot air through the drivers side dash vent and the centre rear vent. I have he climatronic double din unit in the car and when both driver and passenger are set to low, it just blows hot air. Hot air coming out of your Audi's air conditioner can be attributed to several potential issues: Wearing compressor. The center vents get colder much quicker than the outside vents, and the outside vents will blow warm air even after driving for a few miles. 0T quattro and the AC stopped blowing cold air. One, the leaking coolant and the lesser amount of coolant in the system reduces heat output.