Common Heating System Problems

November 28, 2022
Heating System Repair Service | Chester, SC

Yes, it can get very cold here in South Carolina. While we may not have the worst winters, we still get some cold temperatures that require us to have a reliable heating system in our homes. Although you may not have to run your heating system 6 months out of the year here in Chester, SC, you want to ensure that your heating unit is running efficiently and is in tip-top shape as the winter months quickly approach. The Cudd Heating & Air Conditioning Inc team is here to teach our customers about some of the most common heating system problems and what to do about them. Keep reading below to learn more. 


Cold Air Coming Out of Air Vents


Whether you use a heat pump or a furnace, if cold air is coming through your air vents when your heating unit is on, it’s normal to worry. There are a couple of things to look at if cold air is circulating throughout your Chester, SC home including the following. First, check your thermostat to ensure that you have it on the correct settings. Ensure that it’s set to HEAT and that your fan is set to AUTO, not ON. If it’s set to ON, it will blow cold air when your furnace or heat pump isn’t cycling. Secondly, it could be your pilot light. If it’s not lit, there might not be gas flowing to it.


Large Increase in Energy Bills


Another common heating system problem we encounter here at Cudd Heating & Air Conditioning Inc is a large increase in energy bills. It’s normal for your energy bills to increase when the weather outside is extreme, but you should never see a huge increase in your energy bills with no explanation. Large increases in your energy bill could be due to dirty air filters, insufficient insulation, leaky ductwork, or a damaged part of your heating unit.


Loud Noises & Strange Smells Coming From Furnace


Finally, if any loud noises or strange smells are coming from your furnace, it’s time to call your local Chester, SC HVAC contractor. Loud noises like banging, rattling, screeching, etc. indicate something is loose within your furnace and needs to be repaired ASAP to delay further damage. Additionally, any foul odors coming from your furnace or heating unit could be dangerous and require professional HVAC attention.


If you’re interested in learning more about our professional heating and air conditioning services, check out our service page or give the Cudd Heating & Air Conditioning Inc team a call today! We are always happy to help our customers with their heating and air conditioning service needs.

October 29, 2025
As the vibrant leaves begin to fall and the crisp Carolina air starts creeping into the evenings, it’s a clear sign: autumn is here. For homeowners in Chester, SC, this season isn’t just about cozy sweaters and pumpkin spice—it’s also prime time to give your HVAC system the care it deserves. At Cudd Heating & Air Conditioning Inc., we see first‐hand how a little proactive preparation now can save major headaches (and dollars) when the cold snaps arrive. 1. Why Autumn Really Matters for Your HVAC Many folks think of HVAC maintenance either in spring (before the heat hits) or in winter (when you need the heat). But fall sits at a sweet spot: the days are mild enough that you can safely inspect, tune, or even replace components before major usage begins. That means less risk of breakdowns, better energy efficiency, and more comfort when you flip the switch to “heat”. Here’s what’s going on in the system this time of year: Your cooling gear has been working hard all summer, and parts may already be worn or dirty. Debris from trees—leaves, acorns, pine needles—can begin collecting around your outdoor unit, impeding airflow. Temperature swings (warm afternoons, cool evenings) mean your thermostat settings and system responsiveness become more critical. 2. Fall Checklist for Your HVAC (and Why Each Step Counts) Here are five specific tasks we recommend every homeowner in Chester check off — and if you want, we at Cudd can handle them for you. ✔ Clean or Replace Filters Dirty filters restrict airflow, make your system work harder, and drive up your energy bills. Especially after a heavy-use summer, replacing the filter now ensures your system is ready to shift into heating mode smoothly. ✔ Clear Outside Unit & Check Outdoor Components Leaves, twigs, grass clippings or stray mulch can crowd your outdoor unit. That debris reduces efficiency, might lead to overheating, and could cause early failure of key parts. Trim back foliage, clear at least 1-2 feet of clearance, and inspect the fins and coils. ✔ Inspect Your Thermostat & Settings As days shorten, reprogramming your thermostat for fall/winter patterns (e.g., lower at night, higher when you’re home) can reduce costs while maintaining comfort. If you still have an older non-programmable unit, now’s a great time to consider a smart/programmable upgrade. ✔ Check Ductwork, Vents & Indoor Airflow Cold spots, rooms that heat more slowly, or uneven airflow often mean ducts or vents need attention. While you’re in comfort mode, look for blocked vents (furniture, rugs) and check for visible leaks or loose joints in accessible ductwork. ✔ Schedule a Professional Tune-Up Even if everything seems fine, a professional inspection now can catch small problems (loose belts, low refrigerant, failing blower motors) before they become major repairs once you hit full heating mode. At Cudd Heating & Air Conditioning, we offer fall tune-ups designed for the Chester region’s climate. 3. Backup Plan: What to Do If You’re Already Seeing Trouble If you’ve noticed issues like rising energy bills, strange noises when the heat comes on, or inconsistent heating in different rooms—don’t wait. Small problems often escalate when the system has to work harder during cold snaps. Give our team a call and we’ll assess whether a repair or replacement is the smarter move. 4. Why Choose Local—and Why Cudd Heating & Air? We’ve been proudly serving Chester, SC and surrounding areas for decades. When you work with us, you’re not just getting a quick service call—you’re getting a local partner who knows the humidity, the temperature swings, and the specific maintenance needs of our region. From reliable technicians to prompt follow-up, we’re committed to making your home comfortable year-round. 5. Your Next Step Before the air really turns and your system gets pressed into full use—schedule your fall check-up now. Whether it’s changing a filter, clearing the outdoor unit, or scheduling a full inspection, take action today so you’re ready for whatever the Carolina season brings tomorrow. Contact us at 803-377-7512 or visit our website to book your appointment. Fall isn’t just a season—it’s a window of opportunity. With a little attention now, you’ll avoid stress, high bills, and uncomfortable surprises later. Let us help you make this your most efficient, comfortable winter yet. Check out our services page to learn more about how the Cudd Heating & Air Conditioning Inc team can keep your Chester, SC home comfortable all fall and winter long.
September 29, 2025
As September winds down and temperatures begin to drop in Chester, SC, many homeowners start thinking about their heating systems. However, small mistakes during this transition can lead to discomfort, costly repairs, or higher energy bills. At Cudd Heating & Air, we want to help you avoid these common pitfalls so your home stays comfortable all fall and winter. 1. Waiting Too Long to Schedule a Tune-Up One of the biggest mistakes is putting off a fall HVAC inspection. Systems work best when they are serviced before heavy use. By scheduling a tune-up now, you can: Catch minor issues before they become major repairs Ensure your heating system runs efficiently Extend the life of your equipment 2. Ignoring Thermostat Settings Many homeowners forget to adjust their thermostat for seasonal changes. Failing to optimize settings can cause your system to run inefficiently, leading to higher energy bills. Tips to avoid this mistake: Switch to heating mode before it gets too cold Program a schedule to match your daily routine Consider upgrading to a smart thermostat for automatic seasonal adjustments 3. Overlooking Outdoor Unit Maintenance Even as the focus shifts to heating, don’t forget about your outdoor HVAC unit (especially for heat pumps). Debris, leaves, and dirt can accumulate around the unit, reducing efficiency. Simple steps can help: Keep the area around your outdoor unit clear Remove leaves, branches, or any other debris Inspect for visible damage or wear and call a professional if needed Fall is a transitional season, and a little proactive care goes a long way in preventing HVAC problems. Avoiding these common mistakes ensures your home stays comfortable, your system runs efficiently, and you save money on repairs and energy bills. If you’re ready to prepare your HVAC system for fall, contact Cudd Heating & Air in Chester, SC today to schedule a tune-up or inspection. We’re here to help you stay comfortable all season long!
August 26, 2025
The end of summer in Chester, SC often brings long, hot afternoons and heavy humidity. By this point in the season, your air conditioner has already worked hard for months—and it may start showing signs of wear and tear. Ignoring these small problems can lead to bigger repairs, higher bills, or even a breakdown when you still need cool air the most. Here are some of the most common late-summer AC problems you shouldn’t overlook. 1. Weak or Inconsistent Airflow If some rooms in your home feel cooler than others or your vents are barely blowing air, your AC could have clogged filters, leaky ducts, or a failing blower motor. Why it matters: Poor airflow forces your system to work harder, driving up energy costs and causing extra strain on components. 2. Strange Noises Banging, grinding, or squealing sounds coming from your unit aren’t normal. These noises can signal worn parts, loose components, or motor problems. Why it matters: Ignoring unusual sounds can turn a simple repair into a major breakdown. 3. Rising Energy Bills Late summer can push your system to its limit. If your energy bills are much higher than usual, your AC may be running inefficiently due to dirty coils, old parts, or low refrigerant. Why it matters: An inefficient system not only costs more to run but may also be close to failing. 4. Short Cycling Does your AC switch on and off frequently without cooling your home properly? This “short cycling” could be caused by thermostat issues, low refrigerant, or an oversized system. Why it matters: Short cycling wastes energy and puts extra wear on your system. 5. Musty or Unpleasant Odors High humidity in Chester can cause mold or mildew to build up inside your system. If you notice a musty smell when your AC runs, it’s a sign of excess moisture. Why it matters: Poor indoor air quality can impact your family’s health and comfort. Don’t Wait Until It’s Too Late Late-summer AC problems may seem minor, but they often get worse if ignored. At Cudd Heating & Air Conditioning Inc, we provide expert AC repair and maintenance services to keep your system running smoothly through every season. Check out our maintenance page to learn more about how we can keep your HVAC system running effectively and efficiently all year long. 👉 If your AC is showing signs of strain, call Cudd Heating & Air Conditioning Inc in Chester, SC today for fast, dependable service.
July 31, 2025
When the summer heat is beating down on Chester, SC, the last thing you want is for your air conditioner to give out. But if your system is old or struggling to keep up, it may be trying to tell you something - and ignoring the signs could lead to a complete breakdown at the worst possible time. At Cudd Heating & Air Conditioning Inc., we've seen it all. Here are some common warning signs that your AC might be on its last leg - and what to do about it. It's Blowing Warm Air If your system is running but only putting out warm or room-temperature air, that's a major red flag. It could be a refrigerant leak, compressor failure, or something more serious. Either way, warm air means your AC isn't doing its job - and that's a problem in a South Carolina summer. Weak or Inconsistent Airflow Are some rooms freezing while others feel like an oven? Weak or uneven airflow could point to issues with the ductwork, fan motor, or even the unit's internal components. In older systems, it often signals that wear and tear has taken its toll. Strange Noises or Smells Banging, rattling, grinding, or screeching sounds aren't normal. Neither are musty or burning smells. Unusual noises could indicate a loose part, while odd odors could mean mold in your system or electrical issues - both of which need prompt attention. Frequent Repairs If you feel like you're calling your HVAC tech more often than your family, it might be time to rethink your system. Older units tend to break down more frequently, and repair costs can add up fast. At some point, replacing the unit becomes the smarter long-term investment. Skyrocketing Energy Bills An aging or failing AC system works harder to produce the same cooling output - meaning your energy bills rise even if your usage hasn't. If your bills are climbing without explanation, your system's efficiency may be plummeting. It's Over 10-15 Years Old Most air conditioning systems last between 10 to 15 years with proper maintenance. If yours is in that age range and showing any of the signs above, it's likely nearing the end of its lifespan. Newer systems are also far more efficient and could save you money in the long run. What to Do Next If you're noticing one or more of these signs, it's time to have your system evaluated by a trusted local HVAC professional. At Cudd Heating & Air Conditioning Inc., we offer honest assessments and can help you decide whether a repair or full replacement makes the most sense. Don't let your AC quit in the middle of a Chester, SC heatwave. Give us a call today for a consultation or to schedule a system inspection - we're here to keep you cool when it matters most. Check out our products page to learn more about some of the energy efficient air conditioners we carry and install here at Cudd Heating & Air Conditioning.
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
May 30, 2025
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!
Show More