the latest from David and Goliath HVAC

the latest news from David and Goliath HVAC

Welcome to our News & Insights page at David and Goliath Heating and Cooling! Here, we share the latest updates, tips, and trends in the heating and cooling industry. Our blog is a treasure trove of information designed to help you make the most of your HVAC systems.

AC Breaker Tripping Repeatedly in Dallas, NC: Causes & Fixes

When your ac breaker is tripping repeatedly in Dallas, NC, the most common culprit we find is a dirty air filter that forces your system to overwork and draw too much current—so check that first before doing anything else. Our team also diagnoses electrical faults, refrigerant leaks, compressor failures, and failing capacitors on a regular basis. Those issues require professional tools and training to repair safely. A tripping breaker is your electrical panel’s way of protecting your home from damage.

Interior view of a heat pump unit with visible refrigerant lines, compressor, and fan assembly.

AC Compressor Not Turning On in Crowders Mountain, NC

Many homeowners assume an AC compressor not turning on in Crowders Mountain, NC means the compressor itself has failed. In fact, the most common culprit is something far simpler: a tripped circuit breaker or a malfunctioning thermostat that never signals the outdoor unit to start. Before assuming the worst, check your electrical panel for a flipped breaker. Make sure your thermostat is set to cool with a temperature below the current room reading. That said, if those basics check out

Dirty HVAC air filter being held for inspection or replacement during routine maintenance. Best for blogs about dirty air filter symptoms, how often to change your HVAC filter, clogged filter warning signs, poor airflow and dirty filters, indoor air quality issues, and furnace/AC maintenance.

AC Air Filter Clogged Restricting Airflow in Crowders, NC

If you’re noticing weak airflow, warmer rooms, or higher energy bills and wondering whether your AC air filter is clogged and restricting airflow in Crowders, NC, you’re asking exactly the right question. A dirty, congested filter is one of the most common reasons air conditioners struggle to keep up during our humid summers, yet it often goes unnoticed until system performance noticeably drops. Because the filter is your system’s first line of defense against dust, pollen, and debris, a clog

Technician replacing or inspecting an electrical capacitor inside an HVAC unit control compartment.

AC Capacitor Bulging and Leaking in Belmont, NC: What It Means

Many homeowners assume that an AC capacitor bulging and leaking in Belmont, NC, is just a sign of age or normal wear, but in reality, a bulging or leaking capacitor signals that the component has failed and needs immediate replacement by a licensed technician. The capacitor is a small but critical part that stores and releases electrical energy to start your compressor and fan motors, so when it swells, leaks oily residue, or shows a rounded top instead of a

Outdoor wall-mounted mini split condenser installed on a dark exterior wall.

AC Condenser Fan Motor Seized in Lucia, NC: What to Do

When we respond to calls about an AC condenser fan motor seized in Lucia, NC, homeowners usually describe the same scene: their outdoor unit is running, but the big fan blade inside isn’t spinning at all. That’s because the motor has locked up — often from worn bearings, overheating, or debris infiltration — and can no longer turn the fan that’s supposed to cool the refrigerant coil. Without that airflow, your system can’t release heat outdoors. As a result, the

An HVAC technician in blue uniform performing diagnostic testing on a furnace unit using a digital multimeter. Best for blogs about HVAC repair, evaporator coil issues, air handler service, indoor unit maintenance, troubleshooting airflow or cooling problems.

AC Evaporator Coil Frozen Over Reducing Airflow in Stanley, NC

You walk over to the thermostat and lower the temperature a few more degrees, yet warm air keeps blowing from your vents. When you take a peek inside your indoor air handler or furnace cabinet, you see thick ice coating the metal fins where cool air should be flowing freely. An AC evaporator coil frozen over reducing airflow in Stanley, NC usually happens because of restricted airflow, and the first thing to check is your air filter: a clogged filter

Outdoor AC condenser and ductless mini split condenser side by side.

AC Condenser Fan Motor Not Running in Lowesville, NC

When your AC condenser fan motor is not running in Lowesville, NC, the most common culprit we see is a tripped circuit breaker cutting power to the outdoor unit — something you can check in seconds at your electrical panel. However, a silent condenser fan can also point to a failed capacitor, a burned-out motor winding, a faulty contactor, or even a stuck relay. All of these issues require a licensed technician to diagnose safely. Because the condenser fan pulls

Close-up of ice buildup on indoor HVAC components and refrigerant lines inside an air handler or evaporator coil compartment. Best for blogs about frozen AC coils, evaporator coil freezing, AC not cooling, airflow problems, refrigerant issues, frozen HVAC unit troubleshooting.

AC Evaporator Coil Frozen Solid in Dallas, NC: Causes & Fixes

If you’re staring at an ac evaporator coil frozen solid in Dallas, NC, the first thing to check is your air filter — because a dirty, clogged filter is hands-down the most common reason your indoor coil turns into a block of ice. When the filter restricts airflow, your evaporator coil can’t absorb enough heat from the air passing over it. Refrigerant stays too cold, and moisture freezes right onto the coil. That said, a frozen coil can also signal

Cutaway view of heat pump equipment showing internal components, copper refrigerant lines, and the outdoor fan assembly. Best for blogs about heat pump components, AC system components, how a heat pump works, compressor and refrigerant system basics, heat pump repair.

AC Refrigerant Leak from Copper Lines in Stanley, NC

An AC refrigerant leak from copper lines in Stanley, NC isn’t just an inconvenience — it’s a problem that quietly drives up your energy bills, puts extra strain on your compressor, and can eventually leave you without cooling during our hot, humid summers. Because refrigerant is what actually absorbs heat from your indoor air, even a slow leak forces your system to work harder and longer while delivering less comfort. Copper refrigerant lines run between your outdoor condenser and indoor

Close-up of a wall-mounted digital thermostat displaying indoor temperature and cooling settings. Best for blogs about how to use a thermostat, thermostat not reaching set temperature, what does hold mean on a thermostat, thermostat troubleshooting, and why your AC or heat keeps running.

AC Condenser Fan Not Running in Mount Holly, NC

Many homeowners think the outdoor fan is supposed to cycle on and off like the indoor blower. So when they notice their ac condenser fan not running in Mount Holly, NC, they assume it’s normal—but that’s usually not the case. In fact, the outdoor fan should spin whenever your compressor is running. If the compressor hums but the fan stays still, the most common culprit is a failed capacitor. This small electrical component gives the motor the boost it needs

Technician inspecting internal components inside an open gas furnace cabinet during service. Best for blogs about furnace repair, furnace inspection, why your furnace isn't working, heating repair, furnace troubleshooting, and when to call for professional furnace service.

Furnace Repair Denver: Signs, Process & When to Call

When the first cold snap hits Denver, NC, furnace problems tend to reveal themselves at the worst possible moment — usually on a freezing morning or late in the evening when your family needs warmth the most. If your furnace is blowing cold air, cycling on and off repeatedly, making unusual noises, or failing to start altogether, you’re likely searching for reliable furnace repair Denver services to restore comfort quickly. Most furnace issues can be diagnosed and repaired by a

HVAC technician servicing an outdoor ductless mini split condenser unit with gauges and tools visible. Best for blogs about mini split repair, ductless system maintenance, HVAC service, and outdoor unit troubleshooting.

Lennox vs Carrier HVAC Systems: Which Brand Is Right for You?

Most homeowners think choosing between Lennox vs Carrier HVAC systems is a simple matter of picking the more famous name, but the truth is neither brand automatically wins for everyone. For most homes in the Dallas area, Carrier edges ahead thanks to its broader dealer network, consistent mid-to-high efficiency options, and slightly smoother parts availability when repairs are needed down the road. That said, Lennox takes the lead if you prioritize ultra-quiet operation or want access to the absolute highest-efficiency

Outdoor heat pump unit installed in a landscaped yard near a brick wall.

Heat Pump Company Lincolnton: Expert Installation & Repair

Looking for a trusted heat pump company Lincolnton to keep your home comfortable year-round? Whether you’re thinking about installing a new heat pump system, noticing your current unit isn’t heating or cooling the way it used to, or simply need routine maintenance before the next season hits, choosing the right local team makes all the difference. We serve homeowners throughout Lincolnton and the surrounding areas with professional heat pump installation, repair, and maintenance services designed to maximize efficiency and extend

Close-up of the data label and condenser coil on an outdoor heat pump unit. Best for blogs about how to read HVAC model numbers, how to find tonnage on an AC unit, how old is my AC unit, HVAC serial number lookup, identifying your outdoor unit, and AC replacement planning.

AC Compressor Replacement vs New Unit: Which is Right?

When you’re facing an AC compressor replacement vs new unit decision, replacing just the compressor usually makes sense if your system is less than ten years old and only the compressor has failed. However, a full system replacement is often the smarter move when your air conditioner is older, needs frequent repairs, or carries an outdated refrigerant. That’s why getting a professional assessment is so important. The right choice depends on your system’s age, the cost comparison between repair and

Close-up of a white electric baseboard heater installed along an interior wall. Best for blogs about baseboard heating, electric baseboard heaters, baseboard heater problems, heating options for homes, radiant vs forced-air heat, and room-by-room heating.

Why Is My Heater Blowing Cold Air? Common Causes & Fixes

If you’re wondering why your heater is blowing cold air, the most common culprit is a thermostat set to “ON” instead of “AUTO.” When the fan runs continuously, it pushes unheated air between heating cycles. That’s an easy setting to check in seconds. However, cold air from your heater can also signal more urgent issues like a malfunctioning pilot light, a tripped limit switch, dirty flame sensors, or problems with your heat pump’s reversing valve. Because some of these causes

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