< Return to Resource Library As summer approaches you’re going to start relying on your air conditioner more and more. But what happens when you turn it on on the hottest day of the year, and all you get is a blast of hot air? Here are a few things you can do to prevent that from happening. Change your return air filter We talk about changing your air filter a lot, but this is just another example of why it's important. If you leave an air filter in your return duct for too long, it starts reducing your air conditioner’s efficiency and eventually leads to a breakdown. Check your air filter at least once a month and change it as necessary. Clean the area around your outdoor unit Go outside and look at your air conditioner’s outside condenser unit. If there’s any dirt and debris blocking the condenser coils, it’ll impede airflow. This limits your air conditioner’s cooling ability, causing it to blow hot air in your home and increase your utility bill.

Clean the around your air conditioner before the summer hits to prevent this. Make sure there’s a proper refrigerant/Freon charge Just like your car, your air conditioner needs a proper refrigerant (usually Freon) charge to cool your home. But if you don’t have enough (perhaps because of a leak) your air conditioner’s inside and outside condensers will freeze, causing it to stop blowing cold air.price of window ac units If you have hot air sometimes and cold air other times, this might be your problem. how big central ac unit do i needThat’s because when you stop using the air conditioner, the condenser will unfreeze, and you’ll have hot air again until the condenser freezes again.ac unit for mobile homes Contact a professional to get a Freon charge if you need it.

We can help during your next tune-up Maintaining your air conditioner will not only prevent if from blowing hot air, but also costly breakdowns--especially during the summer when your air conditioner runs the most. So it makes sense that you take care of these tasks before then. if you need help, we take of these tasks and much more whenever we do maintenance on your air conditioner. If it’s been a year since you’ve had your air conditioner maintained, contact Pitzer's One Hour today to get it done.post #1 of 8 (permalink) AC was cold yesterday, hot today. I hear some hissing sound. post #2 of 8 (permalink) I know this thread is a year old but I have the same issue except I have the dual zone set up because it is a C . The AC was working fine a few weeks ago when we used the 300 on a weekend trip. After the past week of rain here, we had our first sunny & warm day yesterday. Got in the car started driving, turned on the AC and it did not work. The air will not get cold in either the auto or manual settings and there is a " Hissing sound " coming from behind the dash that comes and goes in a cyclic fashion.

My wife said that the car began making this noise about two weeks ago, however she realy has not had to use the AC much but one evening on her drive home the dash began blowing "clouds" of vapor for a minute when she put the air on, but it still worked fine for the rest of her drive. Gonna try to get the car into the shop tomorrow. I'm not well versed in AC systems, I know how it works, just dont work on them. I'm hoping its a software fix and not something like a blown evaporator. 2011 Sapphire Crystal Metallic 300C 2006 Magnesium Pearlcoat 300C post #3 of 8 (permalink)Hissing sound is a pressure valve making noise because of the decreased amount of refrigerant. System holds vacuum for 15 minute test indicating no major leaks, Dye and 1.65 lbs of refrigerant placed into system. AC now blows ICE COLD. Gonna bring the car back in a week and put a black light under the hood to check for small leak, if detectable. Hopefully it holds or that its such a small leak that it will take another 5 years to get back to this point.

Guess I'm good to go for now. post #4 of 8 (permalink) post #5 of 8 (permalink) Thanks for the info Frankie - That is exactly where I suspect that the leak may be discovered. I realized last evening that I had completely forgot that the condenser was replaced ( along with a new hood, fender & facia ) about a year and a half ago after my wife had struck a deer. post #6 of 8 (permalink) Two weeks later and of course the AC quits on a one hundred degree day ! Brought the car into the shop and checked for leaks. The condensor itself is a mess. The Black light & goggles revealed at least a dozen small leaks all over the front of the condensor, seemingly from corrosion, not from impacts caused by road debris. New OEM condensor coming this afternoon, should have the car back by lunchtime tomorrow. In the meantime I called the body shop that installed the new condensor 15 months ago to find out if there was a warranty on this part and why it may have corroded in such a short amount of time.

According to the body shop, the part is an OEM Chrysler part, warrantied for 12 months, but none the less, should not have failed. Once the repair is done the body shop wants the part back to insure that the part that was billed for was the OEM, to see if and what defects caused this issue, and to possibly get his Chrysler parts distributor to pick up a portion of the bill and make good on this bad part. The winter here in Jersey was a nasty one, and this state does use ALOT of salt on the roads. If for some reason the condensor rotted out because of the excessive salting it wouldn't surprise me. It sucks, but what can ya do. Just gotta make a point to hose out the grille area more often. post #7 of 8 (permalink) The car is back and the AC is icy cold again. Below is a pic of the bad condensor sitting up on the tailgate of my truck. It may be hard to see but the dye shows leaks all up and around the upper right corner. It doesn't seem to be corrosion, just failure. Alot of road bugs stuck in the lower portion - not unusual and no indication of leaks there.