Common Air Conditioning Problems and How to Prevent Them

As winter fades and spring begins in Statesville, NC, now is the perfect time to make sure your heating and air conditioning system is ready for the changing temperatures. At Duncan Heating & Air Conditioning, we know how important it is to have a reliable HVAC system that keeps your home comfortable and energy-efficient as the weather warms up. Here are some key steps to prepare your system for spring and beyond. 1. Change Your Air Filters A clean air filter is essential for proper airflow and indoor air quality. Over the winter, filters can become clogged with dust, pet dander, and other debris. Replacing them regularly—at least every 1–3 months—helps your HVAC system run more efficiently and prevents unnecessary strain on your unit. 2. Schedule a Professional Tune-Up Routine maintenance is key to extending the lifespan of your HVAC system and avoiding unexpected breakdowns. A spring tune-up includes: ✔ Checking refrigerant levels ✔ Cleaning the condenser coils ✔ Inspecting the blower motor and electrical components ✔ Ensuring your thermostat is functioning properly ✔ Lubricating moving parts to prevent wear and tear At Duncan Heating & Air Conditioning, our expert technicians can provide a thorough inspection to ensure your system is in top shape for spring and summer. 3. Clean Around Your Outdoor Unit Over the fall and winter, leaves, dirt, and debris can accumulate around your outdoor condenser unit. Clear away any obstructions to ensure proper airflow. Keeping at least two feet of clearance around the unit helps it operate efficiently. 4. Test Your Air Conditioner Before the temperatures rise, it’s a good idea to test your air conditioning system. Turn it on and let it run for a few minutes to check for any unusual noises, weak airflow, or warm air blowing from the vents. If you notice any issues, don’t wait—schedule a service call before peak cooling season arrives. 5. Upgrade Your Thermostat Spring is a great time to upgrade to a programmable or smart thermostat. These devices help regulate temperatures more efficiently, saving you money on energy bills. A smart thermostat can even learn your schedule and adjust settings automatically for optimal comfort and efficiency. Check out our thermostat product page to learn more about some of the smart thermostats we carry and install here at Duncan Heating & Air Conditioning. Schedule Your Spring HVAC Service Today! Getting ahead of HVAC maintenance now will help you avoid costly repairs and uncomfortable breakdowns later in the season. The team at Duncan Heating & Air Conditioning is here to ensure your system is running smoothly and efficiently as spring begins. Call us today to schedule your spring tune-up and enjoy a worry-free transition into warmer weather!

When it comes to keeping your Statesville home warm and comfortable during the colder months, choosing the right heating system is essential. At Duncan Heating & Air Conditioning, we understand that every home and family has unique needs. Let’s break down the differences between gas and electric heat to help you make the best choice for your comfort and budget. Efficiency and Operating Costs One of the biggest considerations when choosing between gas and electric heat is the cost of operation. Natural gas tends to be more cost-effective than electricity, especially during the winter months when heating demands are high. Gas furnaces typically heat a home faster and more efficiently than electric systems, which can mean lower energy bills in the long run. However, electric heating systems have their own advantages. They are generally less expensive to install and require less maintenance over time. Plus, with the mild winters we often experience in Statesville, an electric heat pump might provide ample warmth without breaking the bank. Environmental Impact If reducing your carbon footprint is a priority, electric heat might be the greener option. Electric systems, especially when paired with renewable energy sources like solar panels, produce no direct emissions. On the other hand, natural gas combustion does release carbon dioxide, though modern gas furnaces are designed to be highly efficient and environmentally conscious. Reliability and Comfort When it comes to reliability, gas heat often has the upper hand. Gas furnaces can operate during power outages, ensuring your family stays warm even when the grid goes down. Electric systems, while reliable, are entirely dependent on a steady power supply. That said, electric heat pumps offer both heating and cooling, making them a versatile choice for year-round comfort in the Statesville climate. They also provide more consistent, even heating compared to the cycles of a gas furnace. Making the Right Choice Ultimately, the best heating system for your home depends on your priorities. If you value lower operating costs and fast, reliable heat, a gas furnace may be the way to go. If you prefer a cleaner energy source with less maintenance and year-round versatility, an electric heat pump could be your ideal solution. At Duncan Heating & Air Conditioning, we’re here to help you weigh the pros and cons and find the perfect fit for your Statesville home. Contact us today to schedule a consultation and take the first step toward a warmer, more efficient home this winter! To learn more about some of the energy efficient heating and air conditioning products we carry and install, check out our products page !

Living in Statesville, NC, means experiencing unpredictable weather patterns, especially as the seasons change. One day, it might be warm and sunny, and the next, temperatures could drop dramatically. These sudden temperature swings can take a toll on your HVAC system and your comfort. Here are some practical tips to ensure your home is prepared for these rapid weather changes. 1. Schedule Regular HVAC Maintenance Your heating and cooling system works hardest when temperatures fluctuate drastically. Scheduling routine maintenance with Duncan Heating & Air Conditioning Inc. ensures your system is in peak condition. Our technicians will check for potential issues, clean essential components, and make necessary adjustments to keep your HVAC system running efficiently. 2. Check and Replace Air Filters Frequent temperature shifts mean your HVAC system is constantly adjusting. A dirty or clogged air filter can reduce airflow and efficiency, making it harder for your system to keep up. Check your air filters monthly and replace them as needed to maintain good indoor air quality and system performance. 3. Upgrade to a Smart Thermostat A smart thermostat can automatically adjust your home's temperature based on the weather and your schedule. This not only helps maintain a consistent indoor climate but also improves energy efficiency by reducing unnecessary heating or cooling. Check out our thermostat product page to learn more about our smart, energy efficient thermostats! 4. Seal Leaks and Insulate Your Home Sudden temperature changes can expose weaknesses in your home's insulation and air sealing. Check for drafts around doors, windows, and attic spaces. Proper insulation and weather-stripping can help stabilize indoor temperatures, reducing the strain on your HVAC system. 5. Utilize Ceiling Fans and Window Treatments Ceiling fans can help distribute warm or cool air more evenly throughout your home. During colder days, switch your ceiling fan to rotate clockwise to push warm air down. In the summer, use window blinds or curtains to block excess heat from the sun. 6. Prepare for Emergency Situations If a cold snap or heatwave hits unexpectedly, have backup heating and cooling options available. Space heaters, extra blankets, or portable fans can help maintain comfort until your HVAC system catches up. Also, make sure your system’s emergency settings are properly configured. 7. Monitor Your System for Warning Signs Pay attention to any unusual sounds, inconsistent airflow, or sudden spikes in energy bills. These can be signs that your HVAC system is struggling to keep up with temperature swings. Addressing issues early can prevent costly breakdowns. Stay Comfortable Year-Round with Duncan Heating & Air Conditioning Inc. Preparing for sudden temperature swings ensures that your home remains comfortable no matter what the weather brings. At Duncan Heating & Air Conditioning Inc., we’re here to help you maintain an efficient and reliable HVAC system. Contact us today to schedule a maintenance check or upgrade your home’s heating and cooling solutions!

Winter in Statesville, NC, means cozy nights and chilly mornings, and your furnace is the key to keeping your home warm and comfortable. But how do you know if your furnace needs a tune-up? Ignoring maintenance can lead to costly repairs or even a breakdown during the coldest months. At Duncan Heating & Air Conditioning, we’ve compiled a list of five common signs that it’s time to schedule a furnace tune-up. 1. Uneven Heating Throughout Your Home Are some rooms in your home much colder than others? Uneven heating often points to a furnace struggling to distribute warm air evenly. This can be due to clogged filters, ductwork issues, or a malfunctioning blower. A professional tune-up can identify and resolve the issue, restoring consistent warmth to every corner of your home. 2. Unusual Noises A properly functioning furnace should operate quietly. If you notice banging, squealing, rattling, or other strange noises, it’s a clear sign something is wrong. These sounds could indicate anything from loose components to worn-out belts or even a cracked heat exchanger. Don’t ignore these noises—schedule a tune-up to prevent further damage. 3. Rising Energy Bills If your energy bills have increased without a change in your usage, your furnace could be the culprit. An inefficient system works harder to heat your home, using more energy in the process. A tune-up can improve your furnace’s efficiency, saving you money in the long run. 4. Frequent Cycling Does your furnace turn on and off more often than usual? This frequent cycling can be a sign of a problem with the thermostat, dirty filters, or an issue within the furnace itself. Regular maintenance can help identify the cause and ensure your system runs smoothly. 5. A Yellow or Flickering Pilot Light The pilot light on a gas furnace should burn a steady blue flame. If it’s yellow or flickering, it could indicate an issue with the gas supply or the presence of carbon monoxide. This is not only a sign of a needed tune-up but also a potential safety hazard. Address this immediately by contacting a professional. Why Schedule a Furnace Tune-Up? A tune-up ensures your furnace operates efficiently and safely, prolongs its lifespan, and helps prevent unexpected breakdowns during the winter months. At Duncan Heating & Air Conditioning, our experienced technicians provide thorough inspections, cleaning, and adjustments to keep your furnace in peak condition. Trust Duncan Heating & Air Conditioning for Your Furnace Tune-Up Don’t let a neglected furnace disrupt your winter comfort. If you’ve noticed any of these signs, it’s time to schedule a tune-up with Duncan Heating & Air Conditioning. We’re proud to serve the Statesville, NC, community with reliable HVAC services tailored to your needs. Contact us today to schedule your furnace tune-up and stay warm all winter long! For more HVAC tips and expert advice, explore our blog or call us at 704-872-2431 .

As the temperatures in Statesville, NC, begin to drop, keeping your home warm and cozy becomes a top priority. However, heating your home efficiently doesn’t have to come at the expense of skyrocketing energy bills. At Duncan Heating & Air Conditioning, we’re committed to helping our neighbors enjoy comfort while saving energy and money. Here are some practical tips to make your heating system more energy-efficient this season. 1. Schedule Regular HVAC Maintenance A well-maintained heating system runs more efficiently, lasts longer, and helps prevent unexpected breakdowns. Before the peak of the heating season, schedule a professional tune-up with Duncan Heating & Air Conditioning. Our technicians will inspect and clean your system to ensure it's running at its best. 2. Seal Air Leaks Drafty windows and doors can let warm air escape and cold air creep in, forcing your heating system to work harder. Use weatherstripping or caulk to seal gaps around windows and doors. Don't forget to check for leaks in less obvious areas, such as around electrical outlets and attic hatches. 3. Upgrade Your Thermostat Consider installing a programmable or smart thermostat. These devices allow you to set heating schedules, ensuring your system runs only when needed. For example, you can lower the temperature while you're at work or asleep and program it to warm up before you return home. 4. Insulate Your Home Proper insulation is essential for retaining heat. Check your attic, walls, and basement for adequate insulation. Adding insulation where needed can dramatically improve your home's energy efficiency and reduce heating costs. 5. Utilize Ceiling Fans Ceiling fans aren’t just for summer! In the winter, set your ceiling fan to rotate clockwise at a low speed. This pushes warm air that naturally rises back down into the room, helping you stay comfortable without increasing the thermostat setting. 6. Change Your HVAC Filters Regularly Dirty filters restrict airflow, making your heating system work harder to maintain your desired temperature. Check your filters monthly and replace them as needed to ensure optimal performance and energy efficiency. 7. Consider Upgrading to a High-Efficiency Furnace or Heat Pump If your heating system is more than 10–15 years old, upgrading to an energy-efficient model can save you money in the long run. At Duncan Heating & Air Conditioning, we offer energy-efficient furnaces and heat pumps designed to keep your home warm while reducing energy consumption. 8. Take Advantage of Sunlight Open your curtains during the day to let natural sunlight warm your home. At night, close them to keep the heat in and the cold out. 9. Close Off Unused Rooms If there are rooms in your home that you don’t use often, close the doors and vents in those spaces. This allows your heating system to focus on the areas where warmth is needed most. 10. Ask About Energy Audits An energy audit can identify areas of your home where you may be losing heat and wasting energy. Contact us to learn more about how an audit can help you create a more energy-efficient living space. Let Duncan Heating & Air Conditioning Help! By following these energy-saving tips, you can stay warm this winter while keeping your energy bills in check. If you need help optimizing your heating system or are considering an upgrade, contact Duncan Heating & Air Conditioning in Statesville, NC. Our expert team is here to provide personalized advice, top-notch service, and the best heating solutions for your home. Schedule your heating service today by calling us at 704-872-2431 or visiting our contact page . Stay cozy, Statesville!

As fall settles in, temperatures begin to cool, and it's time to prepare your HVAC system for the demands of the upcoming winter. Unfortunately, this seasonal transition can often bring about common HVAC issues that may affect comfort and efficiency in your home. At Duncan Heating & Air Conditioning, we're here to help you recognize and prevent some of these issues, so your home remains cozy all season long. 1. Clogged or Dirty Filters Issue: Dust, pollen, and other particles accumulate on filters over time, which can restrict airflow and reduce your system’s efficiency. Clogged filters also force your HVAC system to work harder, leading to increased energy bills and even potential system breakdowns. Solution: Check your filters monthly and replace them at least every three months. Fall is an ideal time for a filter change as you prepare to use your heating system more frequently. 2. Thermostat Malfunctions Issue: A malfunctioning thermostat can lead to uneven temperatures, causing certain rooms to be too hot or too cold. Inaccurate temperature readings can also cause the system to cycle on and off more frequently, increasing wear and tear. Solution: Replace batteries in your thermostat and double-check the settings. If your thermostat is outdated, consider upgrading to a programmable or smart thermostat for better control and efficiency. 3. Ignition or Pilot Light Problems Issue: Older heating systems with pilot lights may experience ignition issues, especially when they haven’t been in use during warmer months. Faulty ignition can result from issues like a dirty flame sensor, gas supply problems, or a worn-out pilot light. Solution: Schedule an inspection to ensure your ignition system and pilot light are working correctly. A professional tune-up from Duncan Heating & Air Conditioning can help prevent ignition issues before they escalate. 4. Blocked or Leaky Ductwork Issue: Ductwork issues can reduce airflow, cause your system to overwork, and lead to uneven heating in your home. Leaky ducts can also pull in dust and contaminants, affecting indoor air quality. Solution: Check for visible duct leaks and ensure vents and registers are clear of debris. Our team can also conduct a thorough inspection and seal any leaks in your ductwork for improved efficiency. 5. Unusual Noises Issue: Banging, squealing, or rattling sounds are often signs of mechanical issues, such as loose parts or problems with the blower motor. Ignoring these sounds can lead to more significant damage. Solution: Don’t ignore unusual noises. Schedule a maintenance check to diagnose and resolve these issues before they cause major damage. 6. Decreased Energy Efficiency Issue: Older or poorly maintained HVAC systems tend to be less energy-efficient, leading to higher energy bills, especially when temperatures drop. Solution: Invest in seasonal HVAC maintenance to keep your system running smoothly. Regular tune-ups by our technicians at Duncan Heating & Air Conditioning can boost efficiency and help you save on energy costs. Schedule Your Fall Maintenance Today Regular maintenance is the key to avoiding unexpected HVAC issues. Schedule your fall maintenance appointment with Duncan Heating & Air Conditioning to ensure a worry-free and comfortable season. Our team in Statesville, NC, is here to help keep your HVAC system in optimal shape, so you can enjoy a cozy home without interruptions this fall and winter. Contact us today to schedule your next heating service appointment! Check out our heating services page to learn more about our professional HVAC service offerings.

As the cooler weather approaches in Statesville, NC, it’s essential to make sure your HVAC system is ready to keep your home comfortable throughout the fall and winter months. At Duncan Heating & Air Conditioning, we understand the importance of seasonal HVAC maintenance to ensure reliable performance, energy efficiency, and safety. With a little preparation, you can avoid costly repairs, improve indoor air quality, and enjoy peace of mind knowing your system is ready to handle the chill. Here are our top fall maintenance tips to get your HVAC system ready for the season ahead. 1. Schedule a Professional HVAC Tune-Up The best way to ensure your heating system is operating at peak efficiency is to schedule a professional tune-up. A licensed HVAC technician from Duncan Heating & Air Conditioning will inspect and clean critical components of your system, including the furnace, heat pump, and air handler. This thorough check-up helps identify any potential issues before they turn into major problems, ensuring your system is ready for the colder months. Regular tune-ups also help improve energy efficiency, lowering your heating bills throughout the season. 2. Change Your Air Filter One of the simplest yet most effective maintenance tasks you can do is replace your HVAC system’s air filter. A clean air filter ensures proper airflow and prevents dust, dirt, and allergens from circulating throughout your home. During fall, when allergens like mold spores and ragweed are common, a fresh filter can help improve indoor air quality and keep your system running efficiently. We recommend checking your air filter monthly and replacing it at least every 90 days—or more often if you have pets or allergies. 3. Clean and Inspect Vents and Ductwork Blocked or dirty air vents and ductwork can reduce the efficiency of your HVAC system, leading to uneven heating and higher energy bills. Before the colder weather sets in, take the time to vacuum out air vents and ensure they’re free of dust and debris. Additionally, consider scheduling a professional duct cleaning service to remove built-up dirt, mold, and allergens from your ductwork. Clean ducts not only improve airflow but also help maintain better indoor air quality. 4. Test Your Thermostat Your thermostat is the control center for your heating system, so it’s important to make sure it’s functioning correctly. Test your thermostat by turning on the heat and checking that the system responds promptly. If you’re still using a manual thermostat, now is a great time to upgrade to a programmable or smart thermostat, which can help you better manage your energy usage and save on heating costs. Smart thermostats allow you to control your home’s temperature remotely, ensuring comfort while maximizing efficiency. 5. Check for Air Leaks Cold air can seep into your home through gaps and cracks around windows, doors, and other areas. These air leaks can cause your HVAC system to work harder to maintain a comfortable indoor temperature, driving up your energy bills. Seal any gaps with weatherstripping or caulk to keep warm air inside and reduce the strain on your heating system. Proper insulation and airtight seals can make a noticeable difference in both comfort and energy savings. 6. Clear the Area Around Your Outdoor Unit If you have a heat pump or another outdoor unit, be sure to clear away any leaves, branches, or debris that may have accumulated over the summer. Keeping the area around your unit free of obstructions ensures proper airflow and allows the system to operate efficiently. It’s also a good idea to check that the unit is level and inspect it for any signs of damage. If you notice anything unusual, contact Duncan Heating & Air Conditioning for a professional inspection. 7. Test Your Carbon Monoxide Detectors As you prepare your home for the cooler months, don’t forget to check your carbon monoxide detectors. Gas-powered furnaces can produce carbon monoxide if there’s a malfunction, and having a working detector is critical for your safety. Test your detectors and replace the batteries if needed to ensure they’re fully operational throughout the heating season. Trust Duncan Heating & Air Conditioning for Your Fall HVAC Maintenance At Duncan Heating & Air Conditioning, we’re committed to helping homeowners in Statesville, NC, keep their HVAC systems running smoothly year-round. Fall is the perfect time to invest in preventive maintenance, ensuring your heating system is ready for whatever winter brings. Whether you need a professional tune-up, duct cleaning, or help with upgrading your thermostat, our experienced technicians are here to provide reliable, expert service. Don’t wait until the cold sets in—schedule your fall HVAC maintenance with Duncan Heating & Air Conditioning today. Call us at 704-872-2431 or visit our contact page to make an appointment and get your home prepared for the cooler weather ahead.

As the summer heat in Statesville, NC, continues to rise, the last thing you want is for your air conditioning system to fail when you need it most. At Duncan Heating & Air Conditioning, we understand how critical a functioning AC is to your comfort. To help you stay cool and avoid unexpected breakdowns, we've put together a list of common signs that indicate your AC may need repair.  1. Warm Air Blowing from the Vents If your air conditioner is blowing warm air instead of cool, it's a clear sign that something is wrong. This issue could be due to a refrigerant leak, a malfunctioning compressor, or an issue with the thermostat. Ignoring this problem can lead to more significant issues, so it's best to have a professional take a look as soon as possible. 2. Weak Airflow Weak or insufficient airflow is another sign that your AC is struggling. This could be caused by a clogged air filter, a problem with the blower fan, or even issues within the ductwork. If you notice reduced airflow, your system may not be able to cool your home effectively, leading to higher energy bills and less comfort. 3. Strange Noises Your AC should run relatively quietly, with only the sound of air moving through the vents. If you start hearing unusual noises like grinding, squealing, or banging, it's a sign that something inside the unit is not working correctly. These noises often indicate mechanical issues that, if left unchecked, could result in a complete system failure. 4. Frequent Cycling Air conditioners are designed to cycle on and off at regular intervals to maintain your desired temperature. If your system is constantly turning on and off, it may be short cycling. This behavior could be caused by an oversized unit, a faulty thermostat, or electrical issues. Frequent cycling not only stresses your AC but also leads to higher energy costs. 5. Foul Odors If you notice unpleasant smells coming from your AC, it's a sign that something is amiss. Musty odors often indicate mold or mildew in the ductwork, while burning smells could be a sign of an electrical issue. Either way, it's essential to address these odors promptly to ensure your home remains safe and comfortable. 6. High Humidity Levels In addition to cooling your home, your AC also helps manage indoor humidity levels. If you notice that your home feels more humid than usual, even with the AC running, it could be a sign that your system is not functioning properly. High humidity can lead to discomfort and even mold growth, so it's important to have your AC inspected if you're experiencing this issue. 7. Rising Energy Bills If you've noticed a significant increase in your energy bills without a corresponding increase in usage, your AC may be the culprit. An inefficient system has to work harder to cool your home, leading to higher energy consumption. Regular maintenance can help prevent this, but if your bills are climbing, it's time to have your AC checked for potential problems. Don’t Wait Until It’s Too Late! If you're experiencing any of these signs, don't wait until your AC breaks down in the middle of a heatwave. At Duncan Heating & Air Conditioning, we're here to help keep your home cool and comfortable all summer long. Contact us today to schedule an inspection or repair service and ensure your AC is ready to handle the heat. Call us now at 704-872-2431 or visit our contact page to book your appointment.

At Duncan Heating & Air Conditioning in Statesville, NC, we understand the importance of staying cool during the hot summer months without breaking the bank. Here are some energy-saving tips to help you keep your home comfortable while reducing your energy bills. 1. Use a Programmable Thermostat Investing in a programmable thermostat allows you to set your cooling schedule based on your daily routine. Adjust the temperature to be higher when you’re not home and lower when you are, ensuring you’re not wasting energy cooling an empty house. To learn about some of the smart thermostats we carry and install here at Duncan Heating & Air Conditioning, check out our thermostat product page today. 2. Seal and Insulate Your Home Proper insulation and sealing can significantly reduce the amount of cool air escaping from your home. Check for gaps around windows and doors and use weatherstripping or caulk to seal them. Adding insulation to your attic can also help maintain a consistent indoor temperature. 3. Keep Blinds and Curtains Closed During the day, keep blinds and curtains closed to block out direct sunlight, which can heat your home and make your AC work harder. This simple step can make a noticeable difference in indoor temperature and energy usage. 4. Use Ceiling Fans Ceiling fans can help circulate cool air more efficiently, allowing you to raise your thermostat by a few degrees without sacrificing comfort. Remember to turn off fans when you leave the room, as they are meant to cool people, not spaces. 5. Maintain Your AC Unit Regular maintenance is crucial for keeping your air conditioning system running efficiently. Replace air filters every 1-3 months, clean the evaporator and condenser coils, and check for any obstructions around the outdoor unit. Scheduling annual maintenance with Duncan Heating & Air Conditioning can help prevent issues and ensure optimal performance. 6. Set the Thermostat to a Higher Temperature Every degree you raise your thermostat can save you about 3% on your cooling bill. Aim to set your thermostat to the highest comfortable temperature. The Department of Energy recommends 78°F when you’re home and need cooling. 7. Avoid Using Heat-Generating Appliances During the Day Try to use heat-generating appliances like ovens, stoves, and dryers during the cooler parts of the day, such as early morning or late evening. This can prevent additional heat from accumulating in your home and reduce the strain on your AC unit. 8. Upgrade to Energy-Efficient Equipment If your air conditioner is more than 10-15 years old, consider upgrading to a newer, more energy-efficient model. Look for units with a high SEER (Seasonal Energy Efficiency Ratio) rating, which indicates better energy performance. By following these energy-saving tips, you can keep your home cool and comfortable while minimizing your energy costs. At Duncan Heating & Air Conditioning, we’re here to help you with all your HVAC needs in Statesville, NC. Contact us today to schedule a maintenance check or to learn more about our energy-efficient solutions. For more tips and expert advice, visit our website or give us a call. Stay cool and save energy with Duncan Heating & Air Conditioning!