Why Is My AC Running but Not Cooling? Common Summer Issues in Chester, SC
June 30, 2025
When the South Carolina summer hits full swing, few things are more frustrating than an air conditioner that sounds like it’s working—but doesn’t feel like it. If your AC is running but not cooling your home, you’re not alone. Here at Cudd Heating & Air Conditioning in Chester, SC, we frequently hear from homeowners dealing with this exact issue, especially during the peak heat and humidity of July and August.
Let’s break down the most common reasons your AC may be running but not cooling, and what you can do about it.
1. Clogged or Dirty Air Filter
A clogged air filter is one of the most overlooked causes of poor cooling performance. When your filter is dirty, it restricts airflow, making it harder for your AC to push cool air through your home.
What to do:
Check your air filter monthly during summer and replace it if it’s dirty. At Cudd Heating & Air, we recommend changing it at least every 60-90 days—or more often if you have pets or allergies.
2. Low Refrigerant Levels
Your AC needs refrigerant to absorb heat from inside your home and release it outside. If your system has a leak or wasn’t properly charged, it will still run, but the air coming out will be warm or lukewarm.
What to do:
This isn’t a DIY fix. Call a certified HVAC technician from Cudd Heating & Air Conditioning to inspect your system for leaks, repair them, and recharge your refrigerant to factory specifications.
3. Frozen Evaporator Coil
If your system is low on refrigerant, or if airflow is restricted (due to a dirty filter or blocked vents), your evaporator coil can freeze. That ice build-up prevents the coil from absorbing heat, which means your AC can’t cool your home effectively.
What to do:
Turn off your AC for a few hours to let the coil thaw. Then check your air filter and vents. If the problem persists, give us a call—we’ll diagnose and fix the underlying cause.
4. Thermostat Problems
Your thermostat tells your AC what to do. If it’s miscalibrated, placed in a poor location, or malfunctioning, your AC might run at the wrong times or fail to cool properly.
What to do:
Make sure your thermostat is set to “cool” and that the temperature setting is lower than your current room temperature. Still having issues? We offer smart thermostat installations and repairs throughout Chester, SC.
5. Dirty or Blocked Condenser Unit
Your outdoor condenser unit plays a critical role in cooling. If it’s blocked by leaves, grass, or debris—or covered in grime—it can’t release heat efficiently. That makes your whole system work harder with worse results.
What to do:
Carefully clean around the unit, and gently hose off the fins if needed (with the power turned off). For a deep clean or inspection, our Cudd Heating & Air techs can help.
6. Aging or Inefficient System
Older AC units—especially those over 10-15 years old—often struggle to keep up with modern demands, especially during Chester’s muggy summers. They might run nonstop, yet never actually cool your home. Check out our air conditioner product page today to learn more about how we can keep your Chester, SC home cool and comfortable all summer long.
What to do:
If your system is outdated, inefficient, or constantly breaking down, it may be time for a professional AC replacement. We offer energy-efficient models and expert installation services that will help you stay cool and save on your energy bills.
Don’t Sweat It—Call the Local Pros
At Cudd Heating & Air Conditioning, we’ve been keeping Chester, SC families cool and comfortable for years. Whether it’s a quick repair, refrigerant recharge, or full system replacement, we’re here to help when your AC stops keeping up with the Carolina heat. Need fast, reliable air conditioning service in Chester, SC?
📞 Call Cudd Heating & Air Conditioning today at
803-377-7512
Summers in Chester, SC can be long, humid, and brutally hot—meaning your HVAC system has to work overtime to keep your home comfortable. At Cudd Heating & Air Conditioning, we believe the best way to avoid costly breakdowns and stay cool all summer long is to get your system ready before the real heat kicks in. Here are our top tips for preparing your HVAC system for a hot South Carolina summer: 1. Schedule a Professional Tune-Up The most important step is having your HVAC system professionally inspected and serviced. Our technicians will check refrigerant levels, clean coils, inspect electrical components, test airflow, and make sure everything is running efficiently. A preseason tune-up can catch small issues before they become expensive problems—and help your system run smoother when you need it most. 2. Replace or Clean Your Air Filter A dirty filter restricts airflow, causes your system to work harder, and can even lead to frozen coils or reduced cooling capacity. We recommend checking your filter every 30-60 days and replacing it as needed—especially during peak usage months. 3. Clean Around the Outdoor Unit Your outdoor condenser unit needs space and airflow to work efficiently. Clear away grass, leaves, dirt, and debris from around the unit. Keep at least two feet of open space on all sides, and trim back any shrubs or branches that may interfere. 4. Seal Air Leaks in Your Home Cool air can easily escape through poorly sealed windows, doors, and ductwork—wasting energy and putting strain on your HVAC system. Sealing these leaks helps your system cool your home more effectively and keeps your energy bills down. 5. Upgrade Your Thermostat Settings If you haven’t already, consider installing a programmable or smart thermostat. Setting higher temperatures while you’re away and cooling your home before you return can reduce energy usage without sacrificing comfort. 6. Consider an AC Replacement if Your Unit is Aging Is your system more than 10-15 years old? It might be time to start thinking about an upgrade. Newer HVAC systems are more energy-efficient and reliable—saving you money in the long run and giving you peace of mind when the summer heat rolls in. Check out our air conditioner products page to learn more about the energy efficient cooling systems we carry and install here at Cudd Heating & Air. Stay Cool with Cudd Heating & Air Conditioning At Cudd Heating & Air Conditioning, we’re proud to serve the Chester, SC community with reliable, affordable HVAC services. Whether you need a summer tune-up, emergency repair, or a whole new system, our team is here to help. Call us today to schedule your seasonal maintenance or get expert advice on keeping your home comfortable all summer long!
As spring settles in across Chester, SC, many homeowners are taking the opportunity to get their HVAC systems ready for the warmer months ahead. While routine maintenance can keep your system running smoothly, there comes a point when repairs are no longer enough—and it might be time to consider a full replacement. At Cudd Heating & Air Conditioning, we want to help you recognize the signs that your air conditioner may be on its last leg and understand when investing in a new unit is the right move. How Old Is Your AC Unit? One of the first things to consider is the age of your current system. Most air conditioners are built to last between 10 to 15 years, depending on usage and how well they’ve been maintained. If your system is in that age range or older, it’s time to start thinking about a replacement—especially if you’ve noticed declining performance or rising energy bills. Frequent Breakdowns and Repairs Are you calling for AC repairs more often than you used to? While occasional fixes are normal, constant breakdowns are a red flag. The cost of repeated repairs can quickly add up, often making a new system the more economical and stress-free choice. A replacement might cost more upfront, but it can save you money over time by reducing repair costs and improving efficiency. Rising Energy Bills Spring and summer energy bills naturally increase with air conditioner use, but if you’ve noticed a steady climb without a change in usage habits, your system could be the culprit. Older or malfunctioning units often work harder than they should to maintain the desired temperature, using more energy and driving up your utility bills. A high-efficiency replacement unit can significantly lower your monthly costs. Uneven Cooling or Humidity Issues Are certain rooms in your home hotter or more humid than others? Uneven cooling and high humidity levels are common signs that your AC system is struggling. A well-functioning air conditioner should maintain even temperatures and help control humidity throughout your home. If yours isn’t doing the job anymore, it could be time to upgrade. Outdated Technology and Refrigerant If your air conditioner still uses R-22 refrigerant (also known as Freon), it’s definitely time to consider a replacement. R-22 has been phased out due to environmental concerns, making it increasingly expensive and difficult to find. Newer systems use environmentally friendly refrigerants and feature updated technology for improved performance, quieter operation, and better energy efficiency. Why Spring Is the Ideal Time to Replace Your AC Spring is one of the best times of the year to replace your air conditioner in Chester. The weather is still mild, giving you time to make the upgrade before the summer heat sets in. Scheduling installation in the spring also helps you avoid the rush of emergency service calls that come with peak summer temperatures, ensuring you’re ready to stay cool and comfortable all season long. To learn more about some of the energy efficient air conditioners we carry and install here at Cudd Heating & Air Conditioning, check out our product page today! Trust Cudd Heating & Air Conditioning for Expert AC Replacement in Chester, SC If you’re unsure whether to repair or replace your air conditioner this spring, the experienced team at Cudd Heating & Air Conditioning is here to help. We’ll assess your current system, provide honest recommendations, and guide you through your options for a new, energy-efficient unit that suits your home and budget. Let us help you prepare for the warm months ahead with reliable cooling you can count on.
As the days get longer and temperatures start to rise, it’s the perfect time to make sure your HVAC system is ready for the season ahead. At Cudd Heating & Air Conditioning, we know how important it is to have a reliable and efficient air conditioning system as spring turns into summer. Taking a few simple steps now can help prevent breakdowns, improve efficiency, and keep your home comfortable. Here’s how you can prepare your heating and cooling system for the change in seasons. 1. Change Your Air Filters One of the easiest yet most effective things you can do is replace your air filters. Dirty filters restrict airflow, forcing your HVAC system to work harder and reducing efficiency. A fresh filter helps improve air quality and ensures your system runs smoothly. 2. Schedule a Spring HVAC Tune-Up Routine maintenance is key to keeping your system in top shape. Our expert technicians at Cudd Heating & Air Conditioning can inspect your system, clean essential components, check for potential issues, and make any necessary adjustments to ensure optimal performance. A professional tune-up can also extend the lifespan of your HVAC unit and help lower energy bills. 3. Clean Around Your Outdoor Unit Spring is a great time to clear away any debris, leaves, or dirt that may have accumulated around your outdoor AC unit. Keeping the area around your unit free of obstructions ensures proper airflow and prevents your system from overworking. 4. Test Your Thermostat Before the temperatures climb, check your thermostat settings to make sure your cooling system is working correctly. If you don’t already have a programmable or smart thermostat, upgrading can help you better control indoor temperatures and improve energy efficiency. 5. Check Your Ductwork for Leaks Leaky ducts can cause your HVAC system to lose efficiency, making it harder to keep your home comfortable. If you notice uneven cooling or higher energy bills, it may be time to have your ductwork inspected and sealed. 6. Consider Upgrading Your System If your HVAC system is more than 10-15 years old or has been needing frequent repairs, spring is a great time to consider an upgrade. A new, energy-efficient unit can provide better performance, reduce energy costs, and keep your home comfortable for years to come. Check out some the energy efficient air conditioners we carry and install here at Cudd Heating & Air Conditioning to learn more. Schedule Your Spring Maintenance Today! Don’t wait for the heat of summer to find out your AC isn’t working properly. Get ahead of any potential issues by scheduling your spring HVAC maintenance with Cudd Heating & Air Conditioning today. Our experienced team is here to help you stay cool and comfortable all season long. Give us a call to book your appointment!
As the temperatures start to rise in Chester, SC, homeowners are getting ready to switch their heat pumps from heating to cooling mode. Before you make the transition, it’s essential to ensure your system is operating efficiently. At Cudd Heating & Air Conditioning, we want to help you avoid unnecessary breakdowns and keep your home comfortable. Here are some key troubleshooting steps to take before switching your heat pump to cooling mode. 1. Check the Thermostat Settings Before making the switch, ensure that your thermostat is set to “cool” rather than “heat” or “auto.” Adjust the temperature setting a few degrees lower than the current room temperature to see if the system responds correctly. If your thermostat isn’t working as expected, replacing the batteries or recalibrating it may help. 2. Inspect the Air Filter A clogged or dirty air filter can restrict airflow, making your heat pump work harder and reducing its efficiency. Check your air filter and replace it if it appears dirty. Ideally, air filters should be changed every 1-3 months, especially during peak heating and cooling seasons. 3. Examine the Outdoor Unit Your heat pump’s outdoor unit (condenser) plays a vital role in cooling your home. Inspect it for any debris, such as leaves, dirt, or grass clippings, which could obstruct airflow. Make sure there is at least two feet of clearance around the unit for optimal performance. If the coils appear dirty, gently clean them using a garden hose or call a professional for maintenance. 4. Listen for Unusual Noises Strange noises, such as grinding, rattling, or hissing, could indicate a mechanical issue or refrigerant leak. If your heat pump is making unusual sounds, it’s best to have a professional HVAC technician inspect it before switching to cooling mode. 5. Ensure Proper Airflow from Vents Walk through your home and check that all vents are open and unobstructed. Furniture, rugs, or curtains blocking the vents can restrict airflow and make it harder for your system to cool your home effectively. 6. Test the System Before Hot Weather Arrives Turn on the cooling mode and let your heat pump run for a while. Check if cool air is flowing from the vents and if the system cycles on and off correctly. If you notice weak airflow, warm air, or inconsistent cooling, there may be an issue that needs professional attention. 7. Schedule a Professional Maintenance Check Routine maintenance is key to keeping your heat pump running efficiently. An HVAC technician can inspect refrigerant levels, clean components, and ensure all parts are working correctly before the cooling season begins. Preventative maintenance can help you avoid costly repairs and improve energy efficiency. Call Cudd Heating & Air Conditioning for Expert Help! If you run into any issues while preparing your heat pump for cooling mode, Cudd Heating & Air Conditioning is here to help. Our expert technicians provide reliable maintenance and repair services to keep your system running smoothly. Call us today to schedule an appointment and stay cool all summer long! To learn more about how we can keep your Chester, SC home comfortable all year long, check out our services page .
When it comes to keeping your home warm during the winter months in Chester, SC, choosing the right heating system is essential. Two of the most popular options are heat pumps and furnaces, each with its own benefits and considerations. At Cudd Heating & Air Conditioning, we want to help you make the best decision for your home’s comfort and efficiency. Understanding the Differences A heat pump works by transferring heat from the outside air into your home, making it an energy-efficient option. It can also provide cooling in the summer, offering year-round climate control. A furnace , on the other hand, generates heat by burning fuel (gas, oil, or propane) or using electricity. Furnaces tend to produce more heat, making them well-suited for extremely cold climates. Which Is Better for Chester, SC? Since Chester, SC, experiences mild to moderate winters, a heat pump is often a great choice. Here’s why: Energy Efficiency – Heat pumps use electricity to move heat rather than generate it, making them more efficient in temperatures above freezing. Lower Operating Costs – Because of their efficiency, heat pumps generally cost less to operate compared to a gas furnace. Year-Round Comfort – A heat pump provides both heating and cooling, eliminating the need for separate systems. However, a furnace might be the better option if: You experience prolonged freezing temperatures, which can make heat pumps less efficient. You already have a gas line and prefer a traditional heating system. You want a system that produces hotter air quickly. Making the Right Choice If you’re looking for an energy-efficient and cost-effective solution, a heat pump is likely your best option for Chester’s climate. However, if you prefer a more traditional heating system or have specific heating needs, a furnace could be the better choice. Still unsure? Cudd Heating & Air Conditioning is here to help! Contact us today for a professional assessment of your home’s heating needs. We’ll guide you in selecting the perfect system to keep your home comfortable all winter long! To learn more about some of the energy efficient furnaces and heat pumps we carry and install, check out our product pages today!
Winter in Chester, SC, is the time to ensure your heating system is working at its best. However, even with regular maintenance, heating systems can experience issues that leave you feeling the chill. Before calling for professional help, there are a few troubleshooting steps you can take to address common problems. Here's how you can tackle some heating issues safely and efficiently. 1. Uneven Heating or Cold Spots If certain rooms in your home are warmer or colder than others: Check Your Vents: Ensure all vents are open and unobstructed by furniture or drapes. Inspect Your Filters: Dirty filters can restrict airflow, leading to uneven heating. Replace them every 1–3 months. Evaluate Your Insulation: Drafty windows or poor insulation might be the culprit. Seal gaps and add insulation where needed. 2. Thermostat Issues If your heating system doesn’t turn on or runs inconsistently: Verify Settings: Ensure the thermostat is set to "Heat" and the temperature is adjusted appropriately. Replace Batteries: Many thermostats rely on batteries, so swap them out if the display is dim or blank. Check Placement: If your thermostat is near a heat source or draft, it may not read the temperature correctly. 3. No Heat at All When your heater doesn’t produce heat: Check the Power: Ensure the system is plugged in and the circuit breaker hasn’t tripped. Examine the Pilot Light: For gas furnaces, the pilot light might be out. Follow your system’s manual to relight it safely. Inspect the Filter: A clogged filter can shut down your system to prevent overheating. 4. Strange Noises Unusual sounds like banging, rattling, or whistling can signal an issue: Rattling: Tighten any loose panels or screws. Whistling: This could indicate a clogged filter or restricted airflow. Check and replace the filter if necessary. Banging: This might mean there’s an issue with the furnace’s ignition system or ducts. Call a professional if the noise persists. 5. Short Cycling If your heater turns on and off frequently: Check the Filter: Dirty filters can cause the system to overheat and shut down prematurely. Inspect the Thermostat Placement: Ensure it’s not near heat sources that could cause it to cycle off too quickly. Contact a Professional: This issue could stem from improper sizing of the unit or a malfunctioning component. When to Call the Professionals While these troubleshooting tips can resolve many minor issues, some problems require expert attention. If you’re dealing with persistent issues, unusual smells, or a complete system failure, it’s time to call Cudd Heating & Air Conditioning Inc. Our experienced technicians are ready to get your heating system back on track, ensuring your home stays warm and comfortable all winter long. Schedule Your Winter Heating Tune-Up Today! Don’t wait until problems arise—prevent them with regular maintenance. Contact Cudd Heating & Air Conditioning Inc. in Chester, SC, to schedule your winter tune-up or repair service. Call us today or book online to stay cozy all season long!