AC blowing warm air isn’t a rare AC issue. Contrary to most issues that seem fairly normal, AC blows hot air is extremely alarming.
The air conditioner must be blowing cold air. That’s its primary task. When AC starts to blow hot air, you need to take it off and correct it right away. This means you need to determine why AC blows warm or hot air.
The air that escapes from the AC or an indoor air handler is cold as it is passed across cooling coils (refrigerant coils). If your AC blows hot air when it is set too cold this is essentially the HVAC phenomenon.
9 Reasons Why Your AC blows Hot Air
1. Clogged Air Filters
The air filters in your home are responsible for capturing various pathogens and particles that are in the air. While they are essential in keeping the air in your home clean and safe for your family to breathe.
However, they will also get overwhelmed with time. If your air filters become blocked, it can hinder airflow and prevent cool air from moving efficiently throughout your home. It could also make your system overwork and cause various AC issues. It is recommended to change each 30- or 90-day interval. The frequency and kind of filter you need to make use of will depend on various factors within your household such as:
- The square footage of a home
- Pets: How many
- The number of allergy sufferers
- Smokers in the number
- A load of an air conditioner
2. Dirty Evaporator Coils
They are located in the indoor HVAC unit the evaporator coils play an important function in how the AC cooling system cools the air. They are where hot air is taken in and then cooled with refrigeration.
However, these coils may become dirty or blocked which can hinder the ability to cool air efficiently. If this happens the AC unit will not be in a position to cool your house effectively and ac blows hot air.
While it’s better for a professional technician to handle it. However, you can do it yourself by cleaning the coils using these steps:
- Switch off the AC unit completely with a focus on the panel and at the breakers.
- Find the coils. They are housed inside the air handler, near that blower’s fan. It is possible to refer to this manual as well as other sources when you’re having difficulty finding them.
- Fill a spray container with an equal amount of hot water and your regular household cleaning soap.
- Spray the solution, then allow it to remain for about 10 minutes.
- Remove the dirt off the coils using the help of a gentle cloth.
3. Condensate Line is Clogged
In the course of the AC unit’s cooling and heating process, a significant amount of condensation escapes. Condensate lines are the ones responsible for transporting the moisture out, and it is usually emptied from the outside wall of your house. Since the area around the drain line is always moist it’s common for the build-up to form, like algae, or mold. When the drain line becomes blocked and blocked, your AC system’s capacity to remove humid air is blocked and warm air will be blown throughout your home.
4. Malfunctioning Compressor
In the event that your Freon level is in good shape The reason, you have the Ac blows hot air could be the fault of your AC compressor.
AC compressors have only one task: compressing the freon. The freon that is fully compressed will undergo complete expansion and completely cool down to the cooling coils.
In the event that an AC compressor fails to do its job correctly and the freon isn’t completely compressed, expansions of the freon are also not enough. This means that cooling systems could not be properly cool. In reality, cooling coils may begin becoming hot and warm in the absence of sufficient expansion of freon (as a result of the AC compressor problem).
That leads to – yes, you’ve got it right – the AC blowing hot air.
How do you fix AC blowing hot Air due to a damaged compressor?
Compressors can be a nightmare to repair. Most of the time it’s more efficient (and more affordable) to simply repair the damaged compressor. This is also the way that most HVAC experts will do it.
For smaller windows and portable AC units, it is possible to could try replacing the compressor by yourself. For larger models (central air, mini-splits, or heat pumps) it is best to get professionals to handle the task. The compressor, if interested, is within the outside unit.
If it is fixed or replaced, the AC compressor is repaired or replaced The freon compressor will return to normal. If that was indeed the problem, you’ll notice that once you have fixed it the AC will then begin blasting cold air once more.
5. Refrigerant Leak
Refrigerant is also an important part of allowing your air conditioner to produce cold air. If there’s the possibility of a leak in the refrigerant within the unit, and it is leaking to the surroundings it isn’t able to generate any cold air. One way to tell if there is an issue with refrigerant is to check if the evaporator coils in the unit have been covered in ice however the cold air is not moving through your home.
6. Duct Leaks
Warm air can be blown out of your vents when there’s an adequate leak in the ductwork of your home. The ducts in your home are able to circulate cool air to the entire house, but when there are leaks the warm air could be incorporated into the cool air, resulting in warmer than normal air that’s blowing through your vents. Ductwork issues must be dealt with by a qualified professional. The ductwork being cleaned or checked every three or five years will help prevent a variety of problems from happening.
7. Outdoor AC Unit is Obstructed
Make sure the outdoor AC unit is clear of obstructions. The overgrown landscape or other debris may cause obstructions to your AC system. Blockages within the AC unit can cause the system to perform more than it has to, which can cause the system to become over-heated. Luckily, this issue is an easy and DIY solution. Clean up all debris that surrounds the AC unit.
8. Thermostat Settings
It’s basic, but if you’ve got your thermostat set to a greater temperature than your room, your AC blows hot air. This is often our first step to look at and then re-check. Most of the time the thermostat is in good order.
The main issue is with new thermostats. If your brand-new AC is producing hot air, there’s an opportunity that your thermostat isn’t wired correctly. The thermostat that is not properly wired is an absolute mess. A mess that could cause some strange issues, such as AC blowing hot air.
This only applies to newly wired or new air conditioners. In the event that your AC was operating normally prior to it, it should be working normally now. The likelihood of a wire falling out of the thermostat’s socket, for instance, is extremely low.
Use these instructions for wiring your thermostat to see whether your thermostat is properly wired (blue wire, also known as B, is typically responsible for cooling).
9. It’s time to replace the AC Unit
Even the most efficient air conditioner will eventually get old. The typical longevity for one’s AC unit is between 15 and 20 years, contingent on how it’s used and maintained. Maintaining regular maintenance, such as changing air filters or periodic tune-ups will help ensure that your unit lasts longer and last for the duration of its lifespan. If you’re performing the recommended maintenance guidelines but your system is still struggling to properly cool or heat. It’s time to look into replacement options. Speaking with one of our certified HVAC experts will assist you in deciding which equipment is most suitable for your requirements.