No matter what the problem, we’re here to help. Before you call for service, try these simple tips for troubleshooting air conditioners. Is it getting power? Check your fuses or circuit breakers to make sure they don't need to be present Remember, if your home's power is out or disconnected, your system may not work Is the thermostat set correctly? Make sure your thermostat has power Check that your thermostat is set to cooling or heating mode and not set to "off" Make sure the thermostat is set to the right setting and temperature No Heat / Insufficient Heat Do you have a new or newly remodeled home? Was any work done on your fuel or electricity lines recently? Check to see if your gas or electricity has been turned off. If this is the case, having it turned back on may solve the problem. Check to see if your thermostat is on, and what temperature it's set at. If your thermostat is turned off or set incorrectly, turn on and/or reset thermostat.

Check your home's circuits and fuse box. If you have an open circuit breaker or burned-out fuse, switch on the circuit or replace the fuse. Remove any snow drifts resting against your outdoor unit. Review our list of Heating System Symptoms & Repairs No cooling / Insufficient cooling Check the doors and windows in your home. Close any open doors or windows as cool air may be escaping through them.If your thermostat is turned off or set incorrectly, turn it on and/or reset thermostat. Review our list of Common A/C Compressor Symptoms & Repairs Check around your outdoor unit. If there are any leaves, hedges or property walls butting up against it, your system may have frozen up due to a dirty coil. Make sure your outdoor unit has 1' of clearance all around it. Check the filters in each of your system components (where applicable). If any of your filters are dirty, consult your manual to clean or replace it. Or call your dealer to do this for you.

Check to see if there is any air coming through your vent. Your indoor blower may not be operating. If this is the case, you should contact your dealer. Review our list of Air Flow Symptoms Stale and stuffy air If you have a whole-home air cleaner or air exchanger, make sure it is switched on and its filter is clean. For even more tips on improving your indoor air quality, click here. Review our list of Common Indoor Air Quaility Symptoms Too dry or too much moisture in the air Check to make sure your humidifier is switched on. Many times, homeowners turn off the humidifier at the end of the previous heating season and forget to turn it back on when needed. Make sure your humidifier’s damper or water valve is open. If it’s closed, consult your manual to open or unclog. Check your humidifier setting and adjust the indoor relative humidity settings to bring greater comfort to your home. Review our list of Whole House Humidifier Symptoms

A high pitched sound often, although not always, indicates a lack of return air. Make sure your return and supply vents are open and free of any blockages including furniture. Other noises (e.g., rattling, humming, thumping or scraping sounds) could be a sign of undersized or flimsy duct work, clogged filter or wear and tear on your system’s internal components. my outside ac unit will not shut offIf you hear an unusual sound, call your local dealer for service.air handling unit introduction Review our list of Common AC & Furnace Smellscar ac service in delhi web page matching your request. It is possible you typed the address incorrectly, or that the pageAs an option, you may visit any of the pages below

for information about Western Digital services and products. Whynter Portable Air Conditioner Troubleshooting Whynter Portable Ice Maker Troubleshooting Whynter Outdoor Misting Fan Troubleshooting We do not recommend placing the unit on carpet. The evaporator can be bent upwards slightly to raise the prongs. The evaporator should be level. Change the water in the inner tank. The ideal water temperature is 50°F-90°F. SNO Titanium ice makers only: SNO 3 in 1 ICE-100S ice makers only: Unit is not switched on. The water level indicator (red ball) is not moving. Water tank is about half full. Turn on the unit using the On/Off switch and press the Start button. Hold a glass of water about 5 inches above fill compartment and pour water into unit. Make sure that the red ball is floating. The unit stops taking in water when the water tank is about half full. Bottle supporter is not installed properly. Unit needs to be restarted.

Bottle has a cap or seal. Make sure the bottle supporter is properly installed with the arrow facing front and center. Turn off the unit for a minute and turn back on then push Start button. Take off the bottle and manual fill the unit with water. Remove cap or seal then reposition bottle back on to bottle supporter. Turn on Power and push Start button. Reduce or increase the water pressure. The unit only takes in water to up to the "Min." line when you first press the "Start" button, then it won't take in water until the 1st batch of ice is dropped. The unit does not take in water when ice making is in process so you will see the low water light blinks through out the process. There is nothing wrong with the unit as long as it keeps taking in water after each batch of ice and the green light stays on.Asking an air conditioning guy why your air conditioner won’t cool is kind of like asking a mechanic why your car won’t run – there are a million reasons. 

Since we are asked this question so often though, we do have a few good answers ready to go.  So when asked about “why an air conditioner won’t cool,” or “why an air conditioner won’t cool below 80,” the short answer is that you’ll have to call up your local HVAC technician if you want it done right.  But then, you’re not on the internet looking this up because you want to drop a few hundred bucks to call one of us out there, now are you?  If you are a return reader to the ASM air conditioning blog, then you know that we are a small, U.S. Veteran-Owned business in Southern California, and like to keep it honest, simple and efficient.  In this article, we will discuss the most common causes for why an air conditioner won’t cool your house properly, including the do-it-yourself troubleshooting tips you can use to get your AC unit up and running properly. With any troubleshooting method, it is important to first understand that safety comes first.  Know your limitations – don’t go poking your head into an attic if you’ve never crawled in an attic before, don’t mess with electricity if you don’t know what you’re doing, and if you have any doubts at any time about what you are doing or whether or not you should be doing it, the answer is “no you shouldn’t.”  

Call the professional out – it’s just not worth it, trust me.  I can’t tell you the hours I’ve spent in an attic trying to figure out what someone was thinking when they did something to their unit.  Fortunately, the most common causes for when an air conditioner won’t cool are pretty simple. If you’ve checked our blog before, then you know that this isn’t the first time I’ve said this – the simplest answer is usually the right answer.  Without going on a tangent about Occam’s Razor, trust me when I tell you that you’d be surprised at how often I get called out to a house only to find out that it was, in fact, the wife that kept turning the thermostat up.  I am far from a marriage expert, as my wife can attest to, but please ask your significant other before you call us out…then make sure that your thermostat has power, is on, is set to auto and displays the desired temperature setting. Also take note of your thermostat’s position in your house. 

Whether you realize it or not, an air conditioner that won’t cool might not end up being the AC unit at all.  Your air conditioner doesn’t kick on because it thinks you are hot, and it doesn’t kick on because it’s hot in your house either – it kicks on when your thermostat gets hot and crosses whatever threshold temperature you have set.  In other words, check the location of your thermostat.  If your thermostat is in the deep dark hallway that is always cool and it is set to 72, then that doesn’t mean your house will be 72 in the front living room with the big windows that get sun all day.  Try adjusting your thermostat to start with, then read: What Temperature Should I Set My Thermostat To? Sit in your chair, relax and take a few deep breaths.  Having any trouble breathing?  Now, take the down comforter out of the closet and wrap it around your face and take a few deep breaths (disclaimer: don’t really).  Is it easier or harder for you to breathe?  Now translate this to why your air conditioner won’t cool – maybe it’s cooling, but it’s having trouble pushing air into your house. 

I say this in almost every one of our articles – your air conditioning filter isn’t really for you, it is a filter to keep contaminants from building up on your AC’s internal components.  The fact that it reduces allergens is just an ancillary benefit.  If you aren’t doing so, change your air conditioning filter no less than once every three months.  It may seem like a pain, or expensive, but your air conditioner works significantly harder when it has to push air through a saturated filter, just like you had to breathe harder through that down comforter.  So hard in fact, that this might be why your air conditioner won’t cool below 80 degrees in your house.  Change the filter and give it a try, then read: Air Conditioning Filter Change. Check the circuit breakers on your main power distribution panel (aka, your circuit breaker box).  Reset all air conditioner related breakers, including ones that are listed as “condenser,” “compressor,” “AC,” “Air Conditioning” and “HVAC.”  

People often times mess this part up – some circuit breakers won’t actually move to the “off” position if tripped.  So to reset them, move the circuit breaker to the “off” position, wait a second, then switch it back to “on.”  Do this for all of the applicable breakers. Next, go to the air conditioner itself (if it is on the roof, careful of loose leaves, etc. and don’t go up unless you know what you are doing).  If you have a “package” AC unit, then there is only one component, usually on the roof.  If you have a “split” AC unit then you have one piece outside and one inside.  Go to both and look carefully for another set of circuit breakers.  Some models have them, and some don’t.  If you see them, reset those too.  If one of these circuit breakers throughout this process keeps tripping off (making an obvious sound), then read: Air Conditioner Circuit Breaker Keeps Tripping for more information on troubleshooting this malfunction.  Don’t just keep resetting it!

If you have a split unit (see: What is a Split Air Conditioner?), then the condensing unit (or “condenser”) is the piece that’s locked outside.  For a package unit, it is all together in one unit outside (hence, “package”).  Either way, go to it.  Check it for debris.  Any leaves, branches, dirt mold and grime that have collected on it needs to be removed.  WARNING – don’t stick your hands inside that thing yet because it could kick on and hurt you!  Either call a professional HVAC specialist, or for the veteran do-it-yourself types, start by removing power from the unit using two different methods (use both, not just one): turn the thermostat to the “off” position, AND turn off the applicable circuit breakers (in HVAC, we ALWAYS turn a unit off at two separate locations for safety – that way, when someone comes along and says “oh, the thermostat is off” and turns it on while your arm is elbow deep in your condenser…get the point?).  Another word for the wise is to turn off all the power, not just the air conditioning breakers. 

Who said that whoever labeled those circuit breakers did it right?  In my experience, it’s about a 50-50 chance that it was labeled right – be safe and just turn off all the power why you do this.  After you turn them off, wait a few minutes just to make sure it doesn’t kick on, then go to work. Ok, enough motherly guidance.  Remove all large pieces of debris, then clean the heck out of that thing with a hose and a brush.  These coils are the exact location that your air conditioner releases the heat from inside your house into the outside air, so make sure they’re cleaned well.  Replace all safety panels, etc., and turn the power back on, as well as the thermostat. See if your air conditioner cools your house now.  If it doesn’t then you’re out of luck.  It is time to call the HVAC pros out.  If you live in Southern California, we ask that you keep us at ASM in mind, but chances are that you don’t live here.  Either way, here is an article I wrote on How to Choose a Reputable HVAC Contractor.

Like I said about the mechanic and your car at the beginning of this article, there are a million reasons that your air conditioner won’t cool, but you’ve honestly done everything that you can.  The number one thing that you can expect your air conditioning technician to do is to hook up to your system and check the refrigerant levels (either R-22 or R-410).  If he notices that they are low, he might opt for a Nitrogen Leak Check, where he will pressurize your system with nitrogen and wait for a while.  Then when he checks the gauge later he can tell if some nitrogen has leaked out.  If so, you have a leak and can go from there.  If not, then your Freon was probably just low.  He’ll top off your refrigerant and go from there.  Either way, call in the pro and see where it goes. I hope this has helped.  In the end, when your air conditioner won’t cool it can be frustrating, but it isn’t then end of the world.  Follow the troubleshooting steps above and go from there.