How to Keep Your Home Cool Without Overworking Your AC

At Duncan Heating & Air Conditioning, we know how frustrating it is when your AC system starts blowing warm air—especially during the peak of a North Carolina summer. If you’ve cranked down the thermostat and your home still feels more like a sauna than a sanctuary, there could be several reasons behind the problem. Here’s a look at some of the most common issues that could be causing your air conditioner to blow warm air, and what you can do about it. 1. Thermostat Issues Let’s start with the basics. Sometimes the issue is as simple as an incorrect thermostat setting. Double-check the mode. Make sure your thermostat is set to “cool” and not “heat” or “fan.” Check the set temperature. Someone in the house may have bumped it up higher than you realized. Dead batteries or faulty sensors in your thermostat can also cause communication issues with your AC unit. If everything looks correct but the problem persists, it may be time for a professional inspection. 2. Dirty or Clogged Air Filter A clogged air filter restricts airflow and can cause your system to overheat and blow warm air. Check your filter monthly and replace it at least every 1–3 months during the cooling season. Dirty filters can lead to poor airflow, frozen evaporator coils, and reduced efficiency overall. This is one of the easiest (and most affordable) problems to prevent. 3. Low Refrigerant Levels Refrigerant is the substance your AC system uses to absorb heat from inside your home. If the system is low on refrigerant (usually due to a leak), it won’t be able to cool effectively. Warning signs include: warm air, ice on the refrigerant lines, and hissing or bubbling noises. Solution: A licensed technician from Duncan Heating & Air Conditioning can locate and repair the leak, then recharge the refrigerant to proper levels. Refrigerant issues are not DIY-friendly, so give us a call if you suspect this is the problem. 4. Dirty Outdoor Unit (Condenser) Your AC’s outdoor unit releases the heat removed from inside your home. If it’s dirty or blocked, the system can’t release heat efficiently, and warm air may circulate back inside. Keep the area around your unit clear of leaves, grass clippings, and debris. If the coils are dirty, a professional cleaning may be needed. Regular maintenance helps keep this part of your system working properly. 5. Electrical Problems or Blown Fuses Electrical issues like a tripped circuit breaker or a blown fuse can shut down key components of your AC system, including the compressor. If the fan is running but the air isn’t cold , your outside unit might not be powered on. Don’t repeatedly reset breakers—call a pro to check things out safely. 6. Frozen Evaporator Coils When airflow is restricted—often due to a dirty filter or blocked vents—the evaporator coils can freeze over. Once that happens, your AC can’t properly cool the air. You may notice ice buildup on the coils or refrigerant lines . Turn the system off and allow it to thaw before restarting, then call a technician to prevent it from happening again. Need Help Fast? Call Duncan Heating & Air Conditioning If your AC is blowing warm air, it’s best to act quickly—what starts as a small issue can turn into a major repair. At Duncan Heating & Air Conditioning, we proudly serve Statesville, NC and surrounding communities with prompt, honest, and affordable HVAC service. Whether you need a quick repair, a full system tune-up, or a second opinion, we’re here to keep your home cool and comfortable all summer long. 📞 Call us today at 704-872-2431 🌐 Or schedule service online today!

When the summer heat hits Statesville, NC, staying cool and comfortable becomes a top priority for homeowners. At Duncan Heating & Air Conditioning, we’re committed to helping you beat the heat with reliable, energy-efficient HVAC solutions tailored to your home’s specific needs. Customized Cooling Solutions for Every Home No two homes are the same—and neither are their cooling needs. That’s why we take a personalized approach to air conditioning service. Whether you need a brand-new system installation, an upgrade to a more energy-efficient unit, or fine-tuning on your existing AC, our experienced technicians make sure your system is set up to keep your entire home cool, even on the hottest Iredell County afternoons. Fast, Reliable AC Repairs When your air conditioner suddenly stops working, you don’t have time to wait around. Our local team is known for prompt, professional AC repair services. We diagnose issues quickly and get your system back up and running, so you’re not left sweating through the summer. We stock a wide range of parts and tools to handle most repairs on the spot. Preventative Maintenance That Pays Off Preventative maintenance is one of the best ways to extend the life of your AC system and avoid expensive breakdowns. Our seasonal tune-ups include thorough inspections, cleaning, and performance checks. This helps your system run more efficiently and keeps your energy bills in check—all while improving indoor air quality and comfort. Energy Efficiency Matters We understand the importance of keeping your home comfortable and cost-effective. That’s why we offer energy-efficient HVAC options, including programmable thermostats and high-SEER-rated air conditioners. These upgrades can significantly reduce your cooling costs and carbon footprint while maintaining optimal indoor comfort. Local Service You Can Count On As a trusted HVAC contractor based right here in Statesville, Duncan Heating & Air Conditioning is proud to serve our neighbors with honest, reliable service. We’re committed to your comfort—and to building long-term relationships with homeowners across our community. Stay Cool with Duncan Heating & Air Conditioning Don’t let summer heat sneak up on you. Whether you’re preparing for the season with a tune-up or facing an unexpected AC issue, Duncan Heating & Air Conditioning is here to help.  📞 Call us today at 704-872-2431 or schedule service online to keep your home cool and comfortable all summer long.

As spring settles in and temperatures start to rise, it’s the perfect time to make sure your air conditioner is ready for the warmer months ahead. But what happens when your AC isn’t performing the way it should? Deciding whether to repair or replace your air conditioner can be a tough call, and at Duncan Heating & Air Conditioning, we’re here to help homeowners in Statesville, NC make the best decision for their comfort and budget. Signs Your Air Conditioner Might Need a Repair Not every issue means you need a brand-new system. In many cases, a simple repair can restore your AC’s performance and extend its lifespan. Here are a few signs that a repair might be the best option: Inconsistent Cooling: If some rooms feel warmer than others, your system may need a tune-up or ductwork inspection. Strange Noises: Grinding, rattling, or buzzing sounds often point to loose components or worn-out parts that can usually be repaired. Higher Energy Bills: A sudden spike in your utility bills could indicate a problem with efficiency that may be resolved with maintenance or minor repairs. Frequent Cycling: If your system turns on and off frequently, it could be due to a faulty thermostat or clogged filter, both of which are typically easy fixes. Regular maintenance can address many of these issues early, saving you from more costly repairs down the line. When It’s Time to Consider Replacing Your Air Conditioner While repairs are often the first choice, there comes a time when replacing your air conditioner makes more financial sense. Consider a replacement if you’re experiencing any of the following: Age of the System: Most air conditioners have a lifespan of 10–15 years. If your system is nearing or past this range, replacement might be more cost-effective than ongoing repairs. Frequent Repairs: Are you calling for repairs more than once a season? The costs can add up quickly, making a new system a smarter investment. Major Component Failures: Issues like a failed compressor or refrigerant leaks can be expensive to fix and may indicate your system is on its last leg. Decreased Energy Efficiency: Older systems tend to lose efficiency over time, leading to higher energy bills. Upgrading to a modern, energy-efficient unit can save you money in the long run. Comfort Issues: If your home never seems to reach the desired temperature or humidity levels, even after repairs, it could be time for an upgrade. Newer air conditioning systems are designed with advanced technology to improve comfort, reduce energy costs, and provide more reliable cooling for years to come. The Benefits of Professional Guidance Deciding between repairing and replacing your air conditioner can feel overwhelming, but you don’t have to make that decision alone. At Duncan Heating & Air Conditioning, our experienced technicians will thoroughly evaluate your system, discuss your options, and help you choose the best solution for your home and budget. We proudly serve homeowners in Statesville, NC with honest recommendations, transparent pricing, and top-quality service to keep you comfortable throughout the spring and beyond. Schedule Your Spring AC Inspection Today! Don’t wait until the summer heat hits—contact Duncan Heating & Air Conditioning today to schedule your spring AC inspection. Whether you need a quick repair or are ready to explore replacement options, we’re here to ensure your home stays cool and comfortable all season long. Stay cool this spring with Duncan Heating & Air Conditioning—your trusted HVAC experts in Statesville, NC! Check out our air conditioning service page to learn more about how we can keep your Statesville, NC home comfortable all summer long.

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.