7 Reasons Why Your AC Is Running But Not Blowing Cold Air

7 Reasons Why Your AC Is Running But Not Blowing Cold Air

There are many reasons why your AC can be running but not cooling. A faulty air conditioner can result in high energy bills and an uncomfortable indoor environment. If your system is not cooling, it does not always mean it will cost you much money on repairs or replacements. Calling a professional to fix the problem can be beneficial since they get to the root of the problem. Here are some common causes of an air conditioner blowing warm or temperate air.

1. Incorrect Thermostat Settings

The main function of the thermostat in your home is to monitor the ambient air temperature and send signals to your HVAC unit. These signals tell your furnace, heat pump or air conditioner to heat or cool the home until it is within an acceptable temperature range set by you. Once it attains the set temperature, the thermostat monitors the air and turns the system on again as needed.

The thermostat is the first thing you should check if your unit is running but not cooling. Ensure it is functioning and set to cool. Its settings might have been interfered with by someone in your household. You can check this yourself in a few ways. First, get a different room thermometer and compare it to the temperature shown on the display. Keep in mind that the heat sensor for the thermostat may not be located at the thermostat display. Be sure that you are comparing the location at the heat sensor as there may be slight differences in each room of the house.

The second thing you can do to check the thermostat is to change the temperature when the AC is not running. If the unit turns on within a few minutes, it is likely that the thermostat is functioning correctly. If not, share your concerns with your professional HVAC company.

2. Clogged or Blocked Air Filters

Your air conditioner has an air filter located in or around the indoor air handler unit. This filter catches dirt, dust, pollen, pet dander, and other airborne particles. It keeps the components of your AC unit cleaner and operating more efficiently. It also keeps the air inside your home cleaner and breathable. An overly clogged or dirty air filter can impede airflow and prevent the air conditioner from functioning efficiently. Cooled air will be circulated inside your home at a lower volume, creating an uncomfortable environment. It can make your system strain, leading to high energy bills. Over time, a clogged filter can cause wear on your system.

You should inspect your filter every one to three months, depending on how dirty it becomes. Change the filters as needed by following the manufacturer’s instructions. If you own pets or have someone in your home that suffers from allergies, you may want to change your filters more frequently. If the problem does not change, you may have a bigger issue requiring a professional diagnosis.

3. Frozen Evaporator Coils

One of the most common reasons your AC may run but not cool is that the evaporator coils are frozen. In such a situation, air fails to flow properly through the coils, preventing the AC from doing its job. The main job of the evaporator coil is to cool the refrigerant to absorb the heat from the indoor air. As the fan blows air over the coil, the refrigerant becomes cold and vaporous. The refrigerant then absorbs heat from indoor air and flows to the outside unit, where it goes through compression to become a hot gas. Cooler air is then circulated back into your home. Frozen evaporator coils impede normal air cooling, meaning your unit will blow warm air.

A frozen evaporator coil can result from insufficient airflow. Insufficient airflow can result from clogged air filters, low fan speed, or a refrigerant leak. Frost over the evaporator coils makes the AC unit work twice as hard, which can increase your electricity bill. Some signs to look out for to identify frozen evaporator coils are inadequate cooling, higher utility bills, and excessive condensate drainage near your indoor unit. In some cases, you may be able to see frost on the fins of your outdoor unit.

4. Leaking Refrigerant

The refrigerant is a chemical that facilitates the cooling process. The refrigerant in an air conditioner is in a closed-loop system. Therefore, it does not require a refill. However, the levels can be depleted if there is a leakage in the refrigerant lines. Low refrigerant levels can reduce the cooling inside your home and increase indoor humidity. Low refrigerant can also affect the compressor over time. Refrigerant is a hazardous chemical that requires special training and knowledge to handle. Work with a professional if you suspect this issue.

5. Undersized AC or Poor Installation

An undersized air conditioner cannot adequately cool your indoor space, so the system will need to run for long periods to maintain the desired temperature, resulting in higher energy bills. The system may also turn on and off frequently without completing a cooling cycle. This is known as short cycling. The system has to work extra hard to ensure the temperature is stabilized. The AC may also have limited capability to remove humidity from the air. Undersized unit is among the most common mistakes homeowners make when purchasing a new AC. You must seek guidance from a qualified technician to ensure you have the appropriate AC size for your indoor space. Poor AC installation can also lead to cooling problems.

6. Old Air Conditioning Unit

Older AC models are less efficient than new models due to a combination of age and technological improvements. An air conditioner with good maintenance should last 10 to 15 years. As a result, if your unit is reaching the end of its lifespan, it may not be cooling as well, or as efficiently, as it could.

7. Fan Problems

Your air conditioner uses a fan to push cool air into the home. If there is no air at all coming out of the vents, this is a good sign that the fan is stuck or the motor is burned out. Even if you hear the compressor running, the fan may not be.

There are several ways that you can check to see if this is your issue. First, confirm that there is no air at all coming out of the system. You can hold a tissue in front of the vent to see if there is any airflow. Next, inspect the air conditioner to see if the fan is visible. This will first confirm whether it is spinning, but it is also an opportunity to see if outdoor debris is blocking the fan’s ability to spin. If you wish to examine the fan more closely, be sure to turn off all power to the air conditioner before touching the fan. You can look for asymmetry in the fan, too. Fans may stop spinning when they are out of balance or the blades are bent.

Fan issues may be simple if the blades or an electrical connection are the cause. If your fan motor is burnt out, it will likely be a more complicated repair. As always, it’s best to call a professional to confirm these issues and perform service.

Call the Experts

There is no reason to panic if your AC is running but not blowing cold air. You can expect quality AC service when you rely on us at Reliable Ducts. We offer residential HVAC services, including installations and maintenance services, to the residents of Jacksonville and the surrounding areas. If you also need indoor air quality and air duct cleaning services, we are here to help. Call us today at Reliable Ducts and schedule an appointment.

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9 Benefits of having new ductwork installed

Having your current ductwork cleaned out on a regular basis helps your home out in many ways. Air quality is improved, and your HVAC system might not have to work so hard to operate. However, there are times when maintenance isn’t enough, and you might want to consider the benefits of having new ductwork installed.

Putting new HVAC ductwork in your home can mean many different benefits. The following are nine common ones you might see.

1. Longer HVAC System Lifespan

New ducts are going to be the right size for your HVAC system, and they’re going to be properly sealed. Your HVAC system isn’t going to have to work as hard as it used to in order to deliver the heating and cooling that your home needs. As a consequence, you’ll get more years out of it before you have to replace it, and repairs and maintenance might not happen as frequently along the way. This can be a huge selling point to prospective buyers if your home is going on the market in the next few years.

2. More Space

Older ductwork might actually be quite bulky and take up more room than it needs to. The space you free up might provide storage areas or places for extra insulation. It can even give you a chance to raise ceilings and move walls for a more open-concept living space. You can literally free up valuable space inside your current home.

3. Installation Won’t Take Long

Many home improvement projects can be lengthy affairs that disrupt your family’s daily rhythm. Custom ductwork doesn’t have to be one of those situations. Ductwork is available in many different designs, costs, sizes, and shapes, and you can pick something that gets installed fast. Working with the right professional in advance can create a plan that gets executed quickly and with minimal disruption to your family’s normal activities.

4. Better Energy Efficiency

New ductwork isn’t going to have cracks and holes that bleed hot or cold air. Better energy efficiency is something you’re going to notice on utility bills in the months coming up ahead. An installation might cost you money upfront, but it’s also going to save you money in the future.

5. Enhanced Air Quality

You want clean air in your home. Old ductwork often contains dust and debris that gets circulated throughout your living areas. Ductwork with cracks and holes can also allow pest infestations that can degrade the air you breathe and pose other health risks. New ductwork can help improve what everyone is breathing so that you no longer have allergy episodes, dusty surfaces, and moldy smells. Kids, pets, and older loved ones may stand to benefit the most. If you’ve been using air purifiers in the past, you might not have to do that any longer once you have new ducts installed.

6. Better Temperature Regulation

Once you have new or repaired ducts, you’re probably going to notice the far more consistent temperatures in every room of your home. If there are no more leaks or improperly sized pieces, then cooling and heating should be simple. Your home won’t have “that” warm or cold room anymore. If you’ve been using fans or spot heaters in certain rooms, you may get to put them away for good.

7. Less Noise

Flexible ductwork might start sagging or bending with the passage of time. This will mean air generates more noise as it goes through them. You can eliminate this issue with new ductwork that is both unbent now and less likely to sag in the future. If your kids have trouble sleeping because of creepy noises, that might become a thing of the past.

8. Safety Concerns

When they operate normally, gas appliances ranging from furnaces to laundry machines will release carbon monoxide and other combustion gases via ventilation systems. If your ductwork is leaky, then there might be back-drafting of these gases. New ducts with proper sealing won’t let these gases back into your living space, so you can have greater peace of mind that your family is safe from the dangers of gas leaks.

9. Help the Environment

A lot of energy used in homes and businesses comes from burning fossil fuels in power plants. This leads to acid rain, greenhouse gases, and smog that drive climate change. When you use less energy in your home, your carbon footprint will be less than what it once was, especially if you increase energy efficiency and have new ducts that are properly sealed.

Signs You Need New Ductwork

Knowing the advantages of new ductwork is useful, but how do you know when you need a fresh installation? A professional inspection can be useful, but your ducts might also be showing signs that they’re ready for replacement. Keep an eye out for the following warning signs.

Dust Exiting the Units

It’s common for some dust to come out of ductwork when the HVAC is running. However, if it’s more than you usually see, then you might need to arrange for ductwork installation. Dust can get into the ducts from outside and come into your home, where it makes everything dirty or even harder to breathe inside the home. You can certainly look forward to spending less time cleaning if you get this fixed.

You Can Smell Mildew

 If your nose is picking up something funny from your ducts, then it might be mold. There are times when warm and moist air goes through cold ducts and results in condensation, especially if there isn’t great insulation. This can result in mold growth that might leak with condensation into your ceiling and spread from there.

You Hear Noise

HVAC systems should operate fairly quietly, and that goes for the ducts, too. If there is more noise than there should be, it’s possible that your ducts are either imbalanced or just too small. That puts more strain on your HVAC system than it should and drives your energy and maintenance bills up.

Inconsistent Temperatures

Is one room in your home a lot cooler or warmer than the others? That might be a leaky HVAC duct that’s losing air and its power to keep the home even in terms of temperature. Replacement ductwork might be the only answer to such an imbalance.

Not a DIY Project

 Any of these warning signs might indicate that your current ductwork needs attention or even replacement. You shouldn’t go investigating this yourself, however, as you might create more problems inside your home’s walls. Get a professional to come out and inspect things. They’ve got experience, knowledge, and tools that can diagnose ductwork problems. They can then tell you if a full replacement is warranted or if you can get by with some repairs to the current installation.

Get Professional Assistance

If you live in the Jacksonville area of Florida, then Reliable Ducts Heating and Cooling is an option to consider. We’ve been helping commercial and residential clients for years with HVAC-related repairs, maintenance, and replacement services, including the installation of new ductwork. Our team also offers indoor air quality services and solutions. Contact Reliable Ducts Heating and Cooling at your earliest convenience for a quote or just to get answers to your question and concerns.

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