The main task of your HVAC system in Mesa is to keep you and your home cool. So when you suddenly realize that instead of cold, your air conditioning unit is blowing warm air, you know you’ve got a problem.
If you are lucky, your kid has messed with the thermostat and it is a fast and free fix, chances are though, that the warm air is an indicator that something is amiss.
Here are the top causes why your Mesa A/C may be blowing warm air:
As indicated above, if you are lucky, the only thing wrong with your Mesa HVAC unit is that you have forgotten to switch it from the winter setting “Heat” to the summer setting “Cold”. If that’s the case, you are in luck.
On “heat” your unit will still blow arm air trying to maintain the temperature it is set for. If you have kids, you know that anything that has a button is exceedingly fun and will get messed with. Before you call your local Mesa air conditioning repair contractor, check the thermostat for the correct setting. And while you are at it, adjust the temperature setting as well. Adjusting your thermostat by as little as one degree can save you a bunch of money.
Out of sight out of mind-that is how many Mesa residents treat their air filters, until their air conditioning is not cooling as it should. While a dirty air filter won’t cause warm air to blow, it can cause your system to work harder. Your air filter is there to catch dirt, dust and particles. If your filter can’t filter, your A/C unit may run longer, take shorter breaks, overheat or cause it to never reach an desired temperature. Regularly replacing your filter can help prevent this.
Leaking refrigerant is a top cause for your A/C system blowing warm air. And you are probably not outside to see it. There are many different reasons why a leak may occur ranging from a loose joint, poor assembly (which normally doesn’t occur with quality brands such as Carrier), shoddy installation or worn valves. No matter why the leak is there, you will need to help of a local Mesa HVAC technician to fix the problem. Why shouldn’t you do this on your own? Because refrigerant is a dangerous chemical and should only be handled by those who are familiar with it.
You may decrease the odds of a leak happening by having preventative A/C maintenance done or by not turning your unit to severely low tempertures after it has been idle all winter.
Frozen Air Conditioner
It sounds counterintuitive to think that you Mesa air conditioner that is sitting outside in the heat day in and day out could actually freeze into a block of ice. However, it is the main cause for your A/C to blow warm air. Who knew?
Even more confusing is the fact that it blows WARM when it is in fact FROZEN. Here’s what’s happening: the frozen part is the evaporator coil that can prevent cool air from entering your home, instead you feel the heat that is giving up by the motor.
This often happens on extremely hot days, when Mesa residents crank up their unit to full force and the temperature at which the Air conditioner is trying to blow drops below 32F. This can easily prevented by setting your thermostat to a moderate temperature such as 78F, for example.
If you are dealing with a frozen unit, you can turn it off and wait a couple of hours and see if that helped to thaw it out sufficiently to work again. In case of persisting trouble contact a Mesa air conditioning repair expert to check on your system.
When it overloads the outside breaker switch of your unit may turn itself off. But it is entirely possible that the internal unit which is responsible for air circulation still has some power and can thus move around warm air.
While this is an easy fix (simply flip the breaker back on), it is possible for the breaker to wear out and then you need an electrician to come and assess the problem. If the problem persists, you may want to consult both an electrician and an AC specialist and see why the unit is needing so much power. This could be a sign that there is something wrong with your unit.
Your compressor could fail due to electrical problems, the refrigerant returning to the compressor or because it overheats. There is not really a tried and true method to prevent this from happening. If you have compressor issues you will need a professional to fix it.
Other reasons your air conditioner may be blowing warm air include:
If you notice that your Mesa air conditioning unit is blowing warm air, you need to contact your HVAC professional. He or she can help you to assess the problem and fix it, if indicated.
Comfort Experts has been offering affordable Mesa HVAC installations and maintenance services to Mesa, Arizona and surrounding communities for many years. Our air conditioning maintenance programs are a fantastic way to ensure that your unit is running like clockwork and to spot problems as soon as they arise. To learn more about our comprehensive air conditioning and heating services contact us today.
I've been servicing Gilbert Arizona and the entire AZ Valley for over 5 years. Your HVAC needs are always my top priority.