AC Blows Hot and Cold Intermittently 

Great video that's detailed but very understandable to a lay person. I feel confident to check the line and understand a bit more when I talk to my mechanic.

A/c vents get clogged and the drain gets clogged and nasty backed up with black mold and debris also everything else mentioned in this video can check filters helps but doesn't help cool it just helps the airflow.

Thank you for talking extensively of about possible problems. It's nice that you don't dumb it down. It's a complicated system.

Thank you this gave me a decent understanding, forget the negative comments

Now this are the tricky problems, this are the good videos

My 2006 Silverado air conditioning doesn’t smell, but it stops working off and on. Had the coolant replaced and didn’t help. Compressor is fine. No leaks. The fan works fine. When the cold air stops on its own here and there, fan still going, the air seems more humid only then (when the cold quits) and smells slightly wet. It’s started the day I got it back from a fuel pump change… It works fine about 50% of the time.

thanks for your videos !! i don't know how to describe my Issus with ac i have chevy impala 2014 new model when ever is stop in traffics light its stop working and blow hot air from out side then i have to on and off to make it work again and both fans are work good both speed i have put the right amount with ac machine 680g R134 when its do that in hot days like more then 35C many people say its ac control valve its the main reason

On my way back to the repair guy now again (5th time, 3rd different place ). I feel bad for making suggestions to them since they suppose to be the experts but I will try to choose my words wisely. My A/C had quite a few repairs done in the past few weeks. The problem now is that it works perfectly while idling ( hence they pick up no issues ) but whilst driving it cycles on and off ( mostly off ). It is the clutchless type. They already changed the condenser and fixed a leak and also found a blocked pipe ( car had a slight front knock which bent the condensor and a pipe slighthly which led to the blockage theory but I guess there are other issues ). They keep charging me everytime as well and I am honestly running very low on cash. I wish you were my ac guy. Greetings from South Africa

Thank you. My car is doing what you describe. Im going to do the checks tommorow.

I had the climate control knob fixed. Was working ok. I released the old freon and put in autozone ac can. Now it blows hot air. Maybe i just need a good ac service like you said. Its a 2002 highlander.

As a single woman, I appreciate this. Helped me to do the job myself.

Nice presentation… if checking the low side is in green but upper green should some Freon be let out to be in lower green? Sometimes blows cold and sometimes blows cool. Is the entire area of green safe from lower level to upper level and ac would blow cold as normal?

Hello RB: Thank you for your great video. This is exactly what is happening to my 2012 Chrysler 300C (the A/C blows hot and sometimes cold air.). I took my car into a local mechanic so that they could check to see if it was Freon that was needed. They checked it and said that the recirculatory button was not working and that it didn't need Freon. I received an estimate for what it might be. I will have to save up for it now. They mentioned three things could be wrong. First, the A/C blend door actuator may be needed. (When I researched this, it says the car would be making a noise. Mine does not.) Second, A/C condenser may be very filthy and may need to be cleaned. (I looked at it, doesn't look dirty, but I rinsed it. Unless it is a deeper cleaning that is needed). After researching, it also said that a noise would be heard. No noise is heard. Third, they could replace the condenser and expansion valve and add Freon (suppose the one in there is removed/lost that they need to add after saying that it didn't need any?). The 3rd option would cost me $628. Thoughts? Should I go with the 3rd option or try the cleaning first? ($75) Again, I don't hear any noises. BTW: Where are you located?

that's my problem - good explanations - thanks. another video mentioned that cabin air filter or the ac radiator (condenser?) could be dirty - do you ever find that's the problem?

We had the same problem with Ford F150 2019. AC was on and off out of nowhere. So we decided to refill AC, which cost 450 dollars in Canada. But after fixing we realized that AC blows colder air but after 20 minutes driving. It doesn't work as suppose to. And AC isn't super cold as it used to be. Please what it can be? We don't see any leakage. The car is 2,5 years new. It is surprising that something got broken so early:(

2007 tahoe- my rear ac blows cold but the front blows warm, also has plentry of freon. What could it be?

I have a situation on my car a lexus ct200h 2013 (which is pretty much like a prius with a lexus badge) where the ac works and blows cold air then some time passes and it starts blowing hot air then after a while cold air again and so on. It might not be related but it started happening driving back home in a heavy rain day where i had to drive back home with higher than average water levels so maybe something shorted I dont know.

Hi sometimes my ac doesn’t come on when it’s too hot outside what could it be?

Also, could be a low-pressure switch.

2012 Honda starts blowing cold on passenger side and stays cold. Then 5-10min of driving and then drivers side finally starts blowing cold too. Any idea what that means?

I have a faulty AC and dont need it and dont want to repair it. It is constantly running, I can't switch it of. Can I dissble it by removing the AC fuse?

My AC makes a hissing sound every time compressor cycles through. It only comes on when driving and more prominent at higher speed. Recently, I noticed that the fan speed suddenly drops, blows hot air and then there is a loud hiss and then cold air starts again. Also noticed the pipe which connects the expansion valve has rust suggesting there must have been quite some condensation around it. I don’t know what the problem can be?

I have a 2002 chevy silverado , 2 vents in the middle lt blows hot air and other 2 vents it blows cold air any idea of what it can be

Hey my a/c alternates between hot and cold, i can also here my compressor switching on and off what dies it mean?

My 2017 nissan Sentra has this issue where the cold line is cool to the touch but never is cold. Its constant and it will never will get any colder than that. I had took it to the dealership to have them service the freeon and they asked me why. I told them it was not really getting cold just cool air but not enough to call it cold. They ended up discovering that the compressor is failing. It gradually over time just kept getting less and less cold. I have no idea at this point but one things certain, it feels like the ac compressor is not working like it should. Not pumping the freeon property and thus not getting cold enough. Just based off everything im seeing it only seems to be the case. I just do not want get rip off again especially since i had them test it to see if this is the issue. I jist want it fixed but have no idea who to take it to.

When I remove the low side I connect directly compressor is blowing OK but when I reconnect back and put gas it's only cooling for few minutes?

My 2012 sonata blows warm at startup on hot days. Fan is working, fully evac and recharged Freon. Not the expansion valve or pressure sensor switch. I need help.

Hi! I have this problems too. Sometimes warm combined with less warm. But can you tell me why the clutch pedal gets hard to press in a hot day like summer days? And when the engine cool down then pedal press normal. Please help! Car is hyundai 1.2 petrol only 55000k km. Many thanks!

i have a Mercedes Benz E250 Coupe 2010 Model , I'm facing a problem with driver side AC is blowing up hot air sometimes while the passenger side and rare side are always cold.. what do you think the problem is?

My 1994 Corolla was blowing ice cold and then all of a sudden, AC was blowing warm and then car was overheating??? Also didn’t notice the fan going on when AC was blowing warm. Any idea what the specific problem would be??

Thank you for a very good explanation. I have a 2017 KIA Soul and the AC works great 99% of the time, but every now and then the cold air stops for a few minutes. Yesterday I noticed, while idling, that if I increase the rpm's by pressing the gas pedal the cool air came back. Any suggestions on what could be the problem?

Thx

My Kia Soul starts blowing hot air when I switch the blower speed but only for a few seconds then turns cold. The A/C light on the dial turns off when it does it then turns on when it blows cold again. What can that be?

Hello. I wonder if someone can help me. I have a 2010 Jeep Liberty, I took it to the shop twice, the first time, they recharged refrigerant, second time they said it was a bad valve causing it to leak, but now it’s blowing hot air again. I did notice both times that it starts making like a hissing noise before it stops working. Can some one give me an idea as to what it could be?? Thank you I’m advance !

Can it be a bad blower making it not blow only cold sometimes ?

Thanks for the video! I have a 2001 Dodge Ram 1500 and it blows cold air for about 10 to 15 minutes then it will blow hot air. I turn off the a/c and fan for 3 minutes, then I turn it back on and it will work again. This keeps reoccurring. How can I fix this?

Hello everyone, i have a question, maybe someone can help, i have a 96 izusu oasis, its the same exact van as 96 honda oasis just diff badge, anyway my ac is being weird, i have had it checked and freaon is properly filled which was done by a mechanic with AC machine, they say they have tryed everything which i doubt cause they said car was to old to figure it out, so they just checked for leaks and stuff, all is ok but the AC has got em stumped, anyway the rear ac is ice cold but after a few moments the front AC will go warm to room temp with the rear AC being ice cold still, its not making any sence to me and i have looked through the factory repair manual that the dealer uses and there is no mention of that issue, can anyone help me with this, thanks so much.

Going through this now. My mechanic put the hose on it and he let some freon out. And it blows pretty cool but not COLD. Starting up the car its humid cold so i know something is off. 2018 nissan Altima. 110,500 miles now. ny suggestions? I added coolant as well often because i drive ALOT

I'm having the same issues, I replace my ford flex with new OEM AC condenser, AC compressor, radiator, belt, tensioner, and expansion valve. It’s still doing the same ice cold to hot air. What do you think it is? Next receiver dryer?

i have a 2005 g35 coupe and my a/c went out when it rained and it hasn’t came back. i bought a/c refill can from walmart and the gauge said it was overfilled with refrigerate, what do i do?

I have same issue with my Hybrid Toyota Yaris 2019 2 weeks ago I regas see/recharged the AC. Today I did a coolant change/flush and afterwards the AC on max/high setting blows cold air for few minutes then hot air for few minutes then cold again and cycle repeats.

After a diagnostic test the AC shop couldn’t help me. I noticed only the passenger side was cooling but not the driver side, so I replaced the door bend acaatur, now it only works sometimes but it’s still not fix. Btw this video didn’t help either.

My 07 charger has the adequate amount of pressure, compressor is on, and blows cold air for 5 minutes then hot air. Then when the AC is turned off, the air still comes out the vents and it’s hot.

Good morning my ac works only when its not hot outside. I had it vac’d & recharged it wasnt the issue. If its hot outside and I put cold water to cool the car down under the hood. Or run it thru a car wash it kicks back in. Im not vegas and they charge a arm and leg also will scam. Possible problem?? I want to have an idea before I take it in.

The ac compressor switches on then off blower motor is working but not blowing cold air

Thank you so much for this. My ‘14 Subaru Crosstrek is doing this. We recharged it with Freon (no idea how to spell it), but it’s still alternating hot and cold. So, now I’m thinking it’s maybe the compressor. I appreciate you taking the time to teach us about our cars. Thanks 🙏

Cold and hot intermittently. Not the best mechanic said it was a compressor leak, and I needed a new compressor... Would the car still blow ice cold if it was a compressor leak?

My car had a problem where when you first start the engine the AC will work for a minute or 2 then just starts blowing regular air. I took it to an AC auto shop and they replaced the compressor, condenser, expansion valve, etc…. But it still wouldn’t work. Do you have any clue what it could be?

My ac works when fan is on lvl 1 or 2 but hot air comes out when on lvl 3 and 4. I don’t even know what to think 😅

My ac blows cold aur only at idle. When running its not. What should be the cause??

Hei.I have everything working fine, but when the car heats up to 90 degrees, the air conditioner turns off and does not work, and every time I turn it on it turns off, why? Greetings to you

Thank you so much all right

2010 Ford F-150 fx4 4x4 ac will blow cold then hot out of no where no leak good on Freon should this be bad ac compressor ?

Thanks man! Question - my sienna 2014 , 126k miles was blowing 70c, I saw the low pressure valve was mad high, so I let some pressure out. (Not the best I know) It was blowing at 75c before I touched it, after I released some pressure after someone told me it would help lol, then it went to blowing 90c. Straight hot air, no cooling. I decided to stop and take it to the shop. I told him what happened and what I did. He said he fixed it, he drained the system, charged it again, but AC is still at 65* at 630am now! This ain’t right. Yesterday on my way home 15 minute drive, the car never got cold, it was barely ok. And that was at 630 car had been sitting in the sun it was mad hot. This car was a meat locker before. 65 at 6am translates to sweating bullets at noon. When it’s noon this doesn’t work.

I have a jeep my ac blow cold but hot on the passenger and all the back areas are hot any suggestions?

My ac works fine for the first minute or two then the cooling gradually goes away I checked the freon and it was slightly less than usual. Is this the issue? If you could write all the possible issues, I would be very grateful.

Hello RB,my 2007 Honda city AC cools in the morning but blows hot on idle in the afternoon (hot weather).what do you suggest I do?Thank you

I just change the ac compressor my ac works few minutes then blows hot air then blows cold again hot and cold on and on what do you think the problems is

All right

In my case my 2013 honda civic A/C system was overfilled, After I leaked some freon out and it was back in the green on my a/c gage it worked fine and stayed cold, I'm in Arizona so we have some extremely hot summers, the other thing that was a issue was the a/c compressor was loose, so I tightened it back down and no more rattling, surging compressor.

Hi when I check the pressure with a screw driver there is pressure that means freon is available? But the pipe is not at all cooling. Is it due to low freon gas

Right.

Pressure sensor

So I have a 2015 Ford Explorer I recharged it with free on and then it went to red mark and never to the green. Now it’s blowing hot air and cold air. I have to go fast so the cold could come out. Would you happen to know what it is?

What is Frezon?

condensation my guy that’s what it’s called

My car will blow ice cold when I idle but then goes warm when I’m driving

OMG, Get to the point!!!!!!!!!!!!!!!

Mine blows cold at night when it’s fresh outside . During the day when it’s hot it blows warm . ??

My ac is coming out hot and cold what do you think that would be ?

Hello, the ac sometime work ， sometime not , but when it work , it really cold , dddl Has code: lost communication with front HVAC / HVCF for 3 seconds or longer, 524025 31 I been replaced AC COMPRESSOR /EXP VALVE /PRESSURE SENSOR VACUUM AC SYSTEM recharge the freon, it work one month and it happened again, can you tell what is going on with my truck , I did not replace the dryer filter , you think could be dryer problem? Truck is 2019 freightliner. Cascadia if you know anything, please let me know!🙏🙏🙏

When night the Aircon cool

My Camaro does blow cold for like 2 minutes then hot for like 15 seconds. Know why?

Can also be a bad blend door actuator

My car blow cool the firs 20 min after that econ light star turning on an off and don let the compresor keep running

So far, I have changed the relay, filled refrigerant, compressor engages, it still turns on/off. When it works, it's icy cold, then blows hot air, what's the next step? Thank you.

The word you where looking for is "condensation" for the moisture outside the pipe.. this is what is happening to my 2016 Jeep Patriot, it blows cold when it wants it seems to only come on once my car runs for a while then it seems to run fine for 30 to 45 Mins it stops and blows hot air! I took it to my local mechanic and they said they thought it had air in the system so they vacuumed all the air out of the system and replaced the freon and it blowed cold when I first got in the vehicle at first but then a few minutes later it was blowing hot again! It Was too late to take to the shop again because they had already closed but ill be backup there on Monday... I replaced the compressor about a year ago and the blower motor about a year and a half ago do you think they could have gone out already. Is there any possibility it could be the blend door actuator? Or the condenser?

I seriously thought that was my car😂 P.s 250,000 in my 2007 Toyota Sienna

Quick and informative... You said the word alright 31 times.

Hi

Om dizzy

Alright, you need to stop saying it so much, but very informative, alright...

Alright

OMG!!! ON AND ON. WE GET IT.

Nothing like over explaining about the cold hose.

This video was very hard to understand, alright? I didn’t learn anything but I don’t think I can watch it again, alright?

Today jr

Your way of explaining 😂😂😂

Took forver