Is Your Air Conditioning Not Blowing Cold Air?
Summer is coming up fast and home owners are scrambling to make sure their air conditioning is up to par when it is needed most. The worst thing to happen is to experience an air conditioner blowing warm or stale air – on a hot summer day. And it happens a lot.
The reason is, air conditioning is often left unused in the colder months of the year. And when it’s time to turn it on for summer, maintenance is lacking, which may results in an underperforming air conditioner.
So What Causes Air Conditioning To Blow Warm/Stale Air?
There are a few reasons why your air conditioning may be blowing out hot and stale air, as opposed to cold and crisp air that it’s supposed to produce. Let’s look at a few of these reasons.
Low Refrigerant/Refrigerant Leakage
A common cause of air conditioning not producing cold air, is that the refrigerant levels are very low. Refrigerant is used to super cool the air, producing cold crisp air. A low refrigerant level will result in warm stale air. For new air conditioning, refrigerant levels normally don’t deplete much, unless there is a leak.
Older air conditioning systems almost always require a refrigerant top up every 12-18 months.
This is a common issue that many home owners face. A hole in the ducts, even a smallish one, could result in a significant loss in cooling efficiency. When cold air is lost through leakage, it goes into the roof or wall spaces, instead of being blown out of the vents. You will experience a much weaker air flow and warmer air, due to the fact that some coldness would be lost as well.
It’s not easy to detect duct leaks but service techs have their methods for detection. Although this is a time consuming process, it is necessary to check through all duct work to ensure there is no duct leakage.
Zone Motor Poorly Installed Or Needs Adjustment
A zone motor controls the amount of airflow going into a zone. If you notice one of your zones not blowing cold air, while others are fine, it’s likely that you may need that zone’s motor adjusted.
It may be that the installer has set the zone setting too small, resulting in a much lower airflow through to the vents in that zone. This is a quick fix and can be resolved without much challenges.
Fundamental as it may sound, sometimes the fault does lie with the user. Not all home owners are savvy enough to figure out all the controls for their air conditioning system.
When an air conditioning unit is not blowing cold air, it could sometimes be due to certain settings. For instance, if it’s manually set to the Heat instead of Cool, or when the cooling range is set too high while the mode is set to Auto (eg. 25-30°).
Some testing on the remote control can quickly resolve issues with incorrect settings. Unfortunately, air conditioning manuals are often not to descriptive in their instructions. So home owners will need to research online and on forums to get a clearer picture of how settings work.
Or you could just leave it to the service techs to check things out.
It is be highly frustrating when your air conditioning is blowing hot air in summer. The best thing to do is to get it resolved as soon as possible. Start with your air conditioning installer (if it’s new). Alternatively, you should call your air conditioning manufacturer’s tech support and open a support ticket.
They will then outsource the service call to a technician located near your area. If your air conditioning is within the warranty period, you do not need to pay for anything, unless replacement parts are required. Do note that warranty only covers manufacturing faults and not usage related issues.
Need help with air conditioning?
Contact Jim’s Heating and Cooling today and we’ll be round to help in not time!