5 Steps To Fixing Heating & AC Issues

When heater and AC not working, it can be a frustrating ordeal, especially during extreme weather. Here's a quick checklist to get things back on track:

• Check thermostat settings. Ensure it's set to "heat" or "cool" as needed, and the temperature is accurately adjusted.
• Inspect air filters. Replace any dirty or clogged filters to improve airflow.
• Verify power sources. Check circuit breakers and power switches to see if the system is receiving power.

An HVAC system is a vital part of keeping your home or business comfortable, but when it encounters problems, it disrupts that comfort. Common issues include incorrect thermostat settings, clogged air filters, and power disruptions. Understanding these problems and knowing how to troubleshoot them can make a world of difference.

I'm Allen Chenault, owner of AC's Heating & Air, with experience in diagnosing and fixing the frustrating problem of heater and ac not working. My goal is to share insights on avoiding comfort disruptions while offering reliable solutions.

Step 1: Check Thermostat Settings

The thermostat is the command center of your HVAC system. When your heater and AC are not working, the first place to check is your thermostat settings. Often, the issue is as simple as incorrect settings.

Incorrect Settings

Start by ensuring your thermostat is set to the correct mode—heat for warming and cool for cooling. It's surprising how often systems fail to work properly due to a simple oversight in settings.

Tip: Check that the temperature setting is higher than the current room temperature for heating, or lower for cooling.

Thermostat Modes

Most thermostats have different modes like auto, on, heat, and cool. In auto mode, the fan only runs when the system is actively heating or cooling, while on mode keeps it running constantly. Make sure your settings align with your comfort needs.

Example: If your system isn’t heating, ensure the thermostat is not set to cool. This might seem obvious, but it's an easy mistake to make.

Battery Replacement

Sometimes, the simplest fix is replacing the batteries. A blank or unresponsive thermostat might just need new batteries.

Quick Fix: Open the thermostat cover and replace the old batteries with fresh ones. This can resolve many issues quickly.

If adjusting the settings and replacing the batteries doesn't work, there might be a deeper issue, such as faulty wiring or a malfunctioning thermostat. In such cases, calling a professional is the best course of action.

Step 2: Inspect and Replace Air Filters

When your heater and AC are not working, a common culprit is clogged air filters. These filters play a crucial role in maintaining airflow and air quality in your home. Over time, they can become blocked with dust, dirt, and debris, leading to airflow obstruction and inefficient system performance.

Clogged Filters

A clogged filter can restrict the airflow in your HVAC system, causing it to overheat and shut down. This not only affects heating and cooling but also increases energy consumption, leading to higher utility bills.

Quick Tip: Check your air filters monthly, especially if you have pets or live in a dusty area.

Airflow Obstruction

Poor airflow can make your HVAC system work harder than necessary, potentially leading to damage. When airflow is obstructed, the system's efficiency drops, and it may fail to heat or cool your home effectively.

Pro Tip: Hold your filter up to a light source. If little or no light passes through, it's time for a replacement.

Maintenance Tips

Regular maintenance of your air filters can prevent many common HVAC issues. Here are a few simple tips to keep your system running smoothly:

• Replace filters every 1-3 months. This varies based on your home's air quality and the type of filter used.
• Consider high-efficiency filters if you have allergies or pets. They capture smaller particles and improve indoor air quality.
• Follow manufacturer guidelines for filter replacement and maintenance. This ensures you're using the correct filter type and keeping your system in top shape.

By maintaining clean air filters, you can extend the lifespan of your HVAC system and ensure it operates efficiently. If you notice persistent issues despite clean filters, it might be time to explore other potential causes.

Next, we'll dig into verifying power sources to ensure your HVAC system receives the necessary electricity to function properly.

Step 3: Verify Power Sources

Sometimes, when your heater and AC are not working, the issue may not be with the units themselves but rather with their power sources. Checking power sources is a simple yet crucial step in troubleshooting HVAC problems.

Circuit Breakers

One common cause of HVAC failure is a tripped circuit breaker. This can happen due to an electrical surge or overload. When a breaker trips, it cuts power to your HVAC system, stopping it from working.

How to Check and Reset:

1. Locate your breaker box. It's usually in a utility room, basement, or garage.
2. Find the breaker labeled for your HVAC system. If it's in the "off" position or somewhere in between, it might be tripped.
3. Reset the breaker. Flip it to the "off" position, then back to "on."

Tip: If the breaker trips again, there's likely a deeper electrical issue. Contact a professional to investigate further.

Power Switches

Sometimes, the solution is as simple as ensuring all power switches are turned on. Many HVAC systems have a power switch near the unit itself. This switch can be accidentally turned off during maintenance or cleaning.

Quick Check:

• Locate the power switch near your HVAC unit.
• Ensure it's in the "on" position.

Electrical Issues

If resetting the circuit breaker or checking power switches doesn't resolve the issue, there might be a more complex electrical problem at play. Signs of electrical problems include:

• Frequent breaker trips
• Burning smell or unusual noises
• HVAC unit won't turn on

In these cases, it's best to call a professional. They can inspect the wiring and electrical components to identify and fix the issue safely.

By verifying power sources, you can often resolve HVAC issues quickly and easily. If power isn't the problem, the next step is to examine refrigerant levels and heat pump functionality.

Step 4: Examine Refrigerant Levels and Heat Pump Functionality

When your heater and AC are not working, it's time to dig a little deeper. One common culprit is low refrigerant levels, which can seriously affect your system's performance.

Low Refrigerant

Refrigerant is essential for the heat exchange process in both your heater and AC. If levels are low, your system can't effectively cool or heat your home. A refrigerant leak is a common cause of low levels and can also lead to higher humidity, making your space feel uncomfortable.

Signs of Low Refrigerant:

• Ineffective heating or cooling
• Ice buildup on coils
• Hissing or bubbling noises

What to Do:

• Don't try to fix it yourself. Handling refrigerant requires special training and tools.
• Call a professional. They can assess the situation, repair any leaks, and recharge the refrigerant safely.

Heat Pump Issues

Heat pumps are versatile, providing both heating and cooling. However, they can face unique challenges, especially in systems that switch between the two functions.

Common Heat Pump Problems:

• Malfunctioning compressor: This can prevent the heat pump from working efficiently.
• Frozen coils: Often due to low refrigerant or poor airflow.
• Electrical issues: Faulty wiring or capacitors can disrupt operation.

Solution:

• Professional intervention is key. Technicians can diagnose and repair these issues, ensuring your heat pump functions correctly.

Professional Intervention

While some HVAC issues can be resolved with simple DIY steps, refrigerant and heat pump problems typically require expert help. Professionals have the right tools and knowledge to handle these complex systems safely and effectively.

Benefits of Professional Help:

• Accurate diagnosis of the problem
• Safe handling of refrigerants and components
• Long-term solutions to prevent future issues

By examining refrigerant levels and heat pump functionality, you can tackle some of the more stubborn causes of HVAC problems. If these aren't the issue, it's time to look at potential blockages and ductwork problems.

Step 5: Clear Blockages and Check Ductwork

Once you've checked refrigerant levels and heat pump functionality, the next step in troubleshooting your heater and AC not working is to address any blockages and inspect the ductwork.

Blocked Vents

Blocked vents can severely impact airflow, causing your system to work harder than necessary. This can lead to uneven heating or cooling throughout your home.

What to Look For:

• Obstructions: Check for furniture, curtains, or other items blocking the vents.
• Dust and debris: Accumulated dust can restrict airflow.

Quick Fix:

• Clear the area: Move any objects that might be blocking the vents.
• Clean the vents: Use a vacuum to remove dust and debris for better airflow.

Duct Leaks

Leaky ducts can cause up to 30% of air to be lost, making your HVAC system inefficient and driving up energy costs.

Signs of Duct Leaks:

• Increased energy bills
• Uneven temperature distribution
• Visible tears or gaps in ducts

What to Do:

• Seal the leaks: Use duct tape or mastic sealant for minor leaks.
• Get a professional inspection: For larger issues, a technician can provide a thorough assessment and repair.

Insulation Problems

Poor insulation can lead to heat loss in winter and heat gain in summer, making your HVAC system work overtime.

Indicators of Insulation Issues:

• Drafts near windows or doors
• Inconsistent indoor temperatures
• Higher energy bills

Solutions:

• Improve insulation: Add weatherstripping around doors and windows.
• Insulate ductwork: This helps maintain temperature consistency and efficiency.

By addressing blockages and checking ductwork, you can improve your HVAC system's performance and ensure more consistent heating and cooling throughout your home. If these steps don't resolve the issue, consult a professional to explore further solutions.

Frequently Asked Questions about Heater and AC Not Working

Why is my heating and AC not working?

Several common issues might cause your heater and AC to stop working. Thermostat settings are often the first thing to check. Ensure it's set to the correct mode—either "heat" or "cool"—and that the temperature is set appropriately. Sometimes, a simple battery replacement can fix the issue.

Air filters play a big role too. If they're clogged, they can obstruct airflow and reduce efficiency. Regularly inspect and replace them to keep your system running smoothly.

Refrigerant levels are crucial for both heating and cooling functions. Low refrigerant can prevent your system from operating effectively. If you suspect a leak, it's best to call a professional to handle it safely.

Why is my heat and AC not blowing in my house?

If your system isn't blowing air, you might be dealing with coolant levels that are too low. This is particularly common if there's a refrigerant leak, which requires professional attention.

Blocked filters can also lead to poor airflow. Dirty filters make it harder for the air to pass through, causing the system to underperform.

Electrical issues might be another culprit. Check your circuit breakers and power switches to ensure everything is turned on and functioning properly.

What would cause a vehicle's AC and heat not working?

In vehicles, a few common problems can cause both the AC and heat to fail. Low refrigerant levels are a frequent issue, often due to leaks. Without enough refrigerant, the system can't cool the air effectively.

A faulty compressor can also prevent your vehicle's AC from working. The compressor is responsible for circulating refrigerant, and if it's not functioning, neither will your AC.

Lastly, electrical issues can affect both heating and cooling systems. Loose wiring or a blown fuse might be the root of the problem. If you're unsure, it's wise to consult a mechanic for a thorough inspection.

Conclusion

Regular maintenance is key to keeping your heater and AC running smoothly. Just like any other machine, your HVAC system needs regular check-ups to ensure it's working efficiently. This not only helps avoid unexpected breakdowns but also extends the lifespan of your unit.

Professional help is invaluable when it comes to complex issues like refrigerant leaks or electrical problems. Attempting to fix these yourself can be risky and might cause more harm than good. Instead, trust in the expertise of a professional to diagnose and repair the issue safely and effectively.

At AC's Heating & Air, we're committed to providing top-notch HVAC services throughout Central Florida. Whether you need a routine tune-up or a major repair, our experienced technicians are ready to help. We offer custom maintenance plans that ensure your system is always at its best, saving you money on energy bills and preventing stress from unexpected failures.

For more information on how we can assist with your HVAC needs, visit our Furnace Repair service page. Don't wait until small issues become big problems—reach out to us today and experience the peace of mind that comes with expert care.