the latest news from David and Goliath HVAC

A thermostat not reaching set temperature typically means your HVAC system cannot deliver enough heating or cooling capacity to match the demand. The most common causes include a clogged air filter restricting airflow, a refrigerant leak reducing cooling power, a failing compressor, or a thermostat that has lost its calibration. This frustrating scenario can stem from a range of issues. Some are as simple as a dirty filter starving your system of airflow. Others point to refrigerant leaks, failing compressors,

When the first cool evening arrives in Mount Holly and you flip on the furnace, burners that won’t stay lit can quickly turn into a chilly problem. Often a furnace ignition sensor dirty preventing pilot light from staying lit in Mount Holly NC is the hidden culprit behind that frustrating cycle of ignition and shutdown. The sensor’s job is to confirm that gas is burning safely before allowing fuel to continue flowing. Even a thin film of soot or carbon

When you wake up on a chilly Lucia morning and the house feels just as cold as when you went to bed, the first thing you check is whether the furnace is actually running. That’s when many homeowners discover a furnace ignition sensor dirty causing no heat in Lucia NC. The blower might be moving air, but it’s cold air because the burners never lit. This single small component, a thin metal rod that sits right in the flame path,

When your heat pump outdoor unit freezing up in winter in Mount Holly NC becomes a recurring problem, the root cause is almost always restricted airflow over the coil. This usually happens when you have a dirty air filter inside your home. When the filter is clogged, your system can’t pull in enough warm air to keep the defrost cycle working properly. As a result, ice builds up on the outdoor coil even when it’s trying to heat your house.

A furnace ignition sensor not lighting the pilot in Iron Station NC is usually caused by carbon buildup coating the sensor rod, a cracked hot surface igniter, or corroded wiring connections. These small components can fail after repeated heating cycles or from combustion residue blocking the electrical signal. When the sensor can’t detect flame, your furnace shuts down as a safety measure, leaving the burners cold even when the thermostat calls for heat. In modern furnaces with hot surface igniters,

A furnace ignitor not lighting in Mount Holly NC is usually caused by a failed ignitor element, a faulty flame sensor, or an interrupted gas supply. When temperatures drop and your heating system clicks or hums but never produces warm air, the ignitor is often the culprit. It’s designed to glow red-hot and ignite the gas flowing to your burners. After years of thermal cycling it can crack, weaken, or burn out completely. Mount Holly winters can bring sudden cold

Your heat pump outdoor unit icing up in winter in Alexis NC usually means the defrost cycle isn’t working correctly or airflow across the coil has become restricted. A thin layer of frost on the outdoor coil during cold weather is normal. Heat pumps pull warmth from the outside air, so moisture naturally condenses and freezes on the coil. Heavy ice buildup that doesn’t melt after a few minutes means something has gone wrong. Once ice starts covering the entire

When you see your heat pump outdoor unit frozen over in Belmont NC, the most common culprit is a dirty air filter restricting airflow inside your home. Check that first, because it takes just a few seconds and helps your system run properly during our cold snaps. We see this problem regularly during Belmont’s winter months. While you can check a clogged filter yourself, other causes like refrigerant leaks, a failed defrost cycle, or blocked coils require a licensed technician

If you’re hearing a high-pitched squeal or loud screeching every time your furnace kicks on, you’re likely dealing with a furnace belt slipping and squealing in Alexis NC. That sound is more than just annoying. Belt-driven furnaces rely on a rubber belt to turn the blower motor. When that belt wears down, stretches, or becomes misaligned, it slips against the pulley. This creates that unmistakable squealing noise. While it might seem like a minor nuisance at first, a slipping belt

A stuck heat pump reversing valve causes no heat because the valve cannot shift refrigerant flow to heating mode, leaving your system blowing cool air instead. The valve sticks because of electrical stress, refrigerant pressure imbalances, or chronic overheating from upstream components. You turn up the thermostat on a cold Crowders Mountain morning, expecting warm air, but your vents blow cool or room-temperature air. If a new valve goes in without fixing the root cause, the replacement will stick or

When your heat pump compressor not engaging during heating cycle in Crowders Mountain, NC leaves you without heat on a cold morning, the compressor itself is usually the symptom, not the root problem. We see this issue regularly across the area. In most cases the compressor refuses to start because something upstream has either starved it of power, sent conflicting signals, or put it in a protective shutdown. Electrical supply trouble, a failing reversing valve, a locked contactor, refrigerant pressure

A stuck reversing valve stops your heat pump from switching into heating mode, leaving you without heat. The valve usually sticks because of electrical problems, refrigerant pressure imbalances, debris buildup, or airflow restrictions, not because the valve itself is defective. In most cases, a stuck reversing valve isn’t the real problem. It’s the symptom of something else going wrong upstream. We see this often: a homeowner replaces the valve, it works for a few weeks or months, then it sticks