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.

Furnace heat exchanger cracked leaking carbon monoxide in Mount Holly, NC: ceiling-mounted carbon monoxide detector

Furnace Heat Exchanger Cracked Leaking Carbon Monoxide in Mount Holly, NC

If you’re worried about a furnace heat exchanger cracked leaking carbon monoxide in Mount Holly, NC, you’re right to take it seriously. A cracked heat exchanger can allow deadly carbon monoxide into your home’s air. If you have symptoms like headache, dizziness, or nausea, or if your carbon monoxide alarm is sounding, turn off your furnace, evacuate the home immediately, and call 911. Once you and your family are safe, continue reading to understand what causes this dangerous problem. That

Furnace igniter not sparking in Mount Holly, NC: technician inspecting internal components inside an open gas furnace

Furnace Igniter Not Sparking in Mount Holly, NC: Root Causes

The problem is usually a symptom, not the root cause. The igniter itself may have cracked or burned out because of upstream electrical issues. Restricted airflow can force the burner assembly to overheat. A failing control board may send the wrong voltage. Pressure switch problems can block the ignition sequence. Simply swapping the igniter without addressing why it failed means the new part will likely fail just as fast. Even worse, a hidden issue will damage something more expensive down

Furnace blower capacitor failing and humming in Stanley, NC: technician repairing wiring and electrical components

Furnace Blower Capacitor Failing and Humming in Stanley, NC

Why is your furnace blower capacitor failing and humming in Stanley, NC, and what’s making it fail over and over? A humming blower paired with weak or no airflow almost always points to a failing capacitor. However, the capacitor itself is rarely the root problem. It’s usually a symptom of something bigger upstream. Most of the time, a capacitor burns out because the blower motor is drawing too much current from age or wear. Airflow restrictions can also force the

Heat pump reversing valve stuck in heating mode in Mount Holly, NC: close-up of a thermal expansion valve (TXV) assembly

Heat Pump Reversing Valve Stuck in Heating Mode in Mount Holly, NC

It’s an unseasonably warm April afternoon in Mount Holly, NC. You flip the thermostat to cooling mode because the sun has been baking your living room all day. But the air coming from the vents is still warm. Your heat pump reversing valve is stuck in heating mode. A stuck reversing valve usually isn’t a random part failure. Instead, it’s often the symptom of an upstream problem that forced the valve to stick or burn out. Simply replacing the valve

Furnace inducer motor making rattling sound in Crowders, NC: high-efficiency residential furnace installed in a utility area

Furnace Inducer Motor Making Rattling Sound in Crowders, NC

A furnace inducer motor making a rattling sound in Crowders, NC usually means something is loose, worn, or obstructed inside the motor assembly. The real problem is often why that happened, not just the noise itself. The inducer motor pulls combustion gases out of your heat exchanger and vents them safely outside. It runs every heating cycle and takes on a lot of wear. When you hear rattling, it’s typically a failed bearing, a loose blower wheel, or debris caught

Furnace pilot light keeps going out in Lucia, NC: gas furnace and connected ductwork installed in an unfinished basement

Why Your Furnace Pilot Light Keeps Going Out in Lucia, NC

You’re heading downstairs on a chilly Lucia morning to grab your coffee. You notice the basement feels colder than it should. Your furnace pilot light keeps going out in Lucia, NC, again. A pilot light that won’t stay lit is usually caused by a faulty thermocouple. This safety sensor detects whether the flame is present and shuts off gas flow if it isn’t. However, that failed thermocouple is often a symptom of a deeper issue. A draft pushing air into

Technician removing the front cover of a wall-mounted heating unit to access internal components during service or repair. Best for blogs about furnace repair, furnace part replacement, furnace maintenance, heating repair, when to call for professional furnace service, and furnace diagnostics.

Furnace Blower Motor Running Constantly in Spencer Mountain, NC

If your furnace blower motor running constantly in Spencer Mountain, NC, you’re right to ask what’s causing it — a blower that never shuts off is usually a signal that something upstream has failed or been set incorrectly, and ignoring it can lead to higher energy bills, premature motor burnout, and uncomfortable temperature swings throughout your home. Most homeowners assume the blower motor itself is broken, but in reality the motor is almost always responding to a problem somewhere else

Hand pressing the test button on a wall-mounted carbon monoxide alarm with digital display and indicator lights. Best for blogs about carbon monoxide detector safety, furnace safety tips, gas furnace carbon monoxide risks, signs of carbon monoxide in the home, why every home needs a CO detector, and heating safety during winter.

Furnace Heat Exchanger Cracked Leaking Carbon Monoxide in Stanley, NC

When the first cold snaps arrive here in Stanley, NC and furnaces fire up after months of sitting idle, one of the most dangerous issues we see is a furnace heat exchanger cracked and leaking carbon monoxide — and in most cases, the crack itself isn’t the real problem. It’s usually a symptom of an underlying cause that’s been wearing on your furnace for months or even years. Chronic overheating from restricted airflow, a neglected air filter that forced the

Technician servicing the internal components of a wall-mounted boiler or heating unit with the front cover removed. Best for blogs about furnace repair, furnace maintenance, heating system diagnostics, why your furnace is not working, furnace inspection, and heating service calls.

Emergency Furnace Repair Denver: Is It Time to Call?

When your furnace stops working on a freezing night in Denver, NC, it’s natural to wonder whether you truly need emergency furnace repair denver or if the problem can wait until morning. The truth is, some furnace failures are more than inconvenient—they can put your family’s safety at risk, cause water damage from frozen pipes, or leave vulnerable household members in dangerously cold conditions. Furnace emergencies don’t follow business hours, so knowing the warning signs that demand immediate professional attention

Close-up of the inside of a gas furnace showing burners, wiring, and internal mechanical components. Best for blogs about furnace repair, signs you need furnace replacement, furnace maintenance issues, why your furnace is not heating properly, unsafe furnace warning signs, and when to repair vs replace a furnace.

Furnace Repair High Shoals: Warning Signs & What to Expect

Many homeowners believe a furnace only needs repair when it stops working completely. In truth, waiting for a total breakdown often leads to more expensive fixes and uncomfortable nights. If you’ve noticed strange sounds, uneven heating, or higher energy bills this winter, your system is already telling you it needs attention — even if warm air is still coming through the vents. Furnaces rarely fail without warning, so catching these early symptoms means we can often resolve the issue with

Close-up of blue burner flames inside a gas furnace during normal heating operation. Best for blogs about furnace burners, gas furnace operation, furnace repair, heating system maintenance, why furnace isn't heating properly, and furnace ignition / burner issues.

Emergency Furnace Repair Crowders: Signs You Need Help

When your furnace stops producing heat on a freezing Crowders night, you need emergency furnace repair Crowders fast — because comfort and safety can’t wait until Monday morning. Cold air blowing from your vents, strange smells coming from the unit, or a furnace that won’t turn on at all are more than inconveniences; they’re urgent situations that require professional attention. At David and Goliath HVAC, we understand that furnace failures don’t follow a schedule, which is why our team responds

Technician inspecting or servicing gas furnace burners inside a residential heating system. Best for blogs about furnace maintenance, furnace cleaning, burner cleaning, heating tune-ups, furnace service checklist, and why annual furnace maintenance matters.

Furnace Repair Cost Crowders: Pricing Factors Explained

When the first frost settles over Crowders and your furnace struggles to keep up, the question of furnace repair cost Crowders quickly moves from abstract to urgent. Several key factors shape what you’ll pay: the type of repair needed, whether a part has simply worn out or a more complex component has failed, how accessible your system is for our technicians to reach and diagnose, and whether you’re calling during a weekend emergency or scheduling a visit during regular business

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 Cost Bessemer City: What Affects Your Quote

When you call us about furnace repair cost in Bessemer City, the quote you’ll receive depends on several hands-on factors our technicians assess during the diagnostic visit. In fact, what drives the final number isn’t just the broken part itself—it’s also how difficult that component is to reach in your particular home, whether your furnace is still under manufacturer warranty, the severity of the failure, and whether you need an emergency repair or can schedule a standard appointment. We’ve repaired

Technician repairing wiring and electrical components inside an open residential gas furnace cabinet. Best for blogs about furnace repair, HVAC electrical issues, why your furnace won't turn on, blower motor or control board problems, professional HVAC diagnostics, and heating system troubleshooting.

Emergency Furnace Repair Bessemer City: When to Call for Help

When your furnace quits on a frigid Bessemer City night, it’s natural to wonder whether you truly need emergency furnace repair Bessemer City or if the problem can wait until morning. The short answer: if your home is dropping into unsafe temperatures, you smell gas, you hear alarming noises, or you see smoke or flames, that’s an urgent call for help. Even less dramatic symptoms—like a furnace cycling on and off constantly or blowing cold air—can signal serious issues that

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.

Heat Pump Outdoor Coil Dirty and Clogged in Cherryville, NC

When your heat pump outdoor coil gets dirty and clogged in Cherryville, NC, the entire system has to work harder to keep your home comfortable — and that extra strain shows up in higher energy bills, reduced heating and cooling output, and a much shorter lifespan for the equipment. Pollen, cottonwood fuzz, grass clippings, and everyday dust settle into the aluminum fins surrounding the coil. This debris blocks the airflow your heat pump depends on to transfer heat efficiently. Over

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