Category: Maintenance

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.
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

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An outdoor heat pump condenser unit mounted on a concrete pad with gravel base next to a residential foundation. Best for blogs about heat pump systems, ductless outdoor units, heat pump installation, heat pump replacement, energy-efficient heating and cooling, and outdoor HVAC equipment.
Heating

Heat Pump Iron Station: Warning Signs & When to Call a Pro

If you’re searching for “heat pump Iron Station,” you might think Iron Station is a specific type or brand of heat pump system. In reality, though, it refers to the small town of Iron Station, NC, located just a short drive from our home base in Dallas. Heat pumps are incredibly popular in our region because they handle both heating and cooling efficiently. That makes them ideal for North Carolina’s

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Two outdoor heat pump condenser units installed along the exterior of a residential building.
A/C Repair

How Long Do AC Units Last? Lifespan, Signs & Replacement Tips

How long do AC units last? Most central air conditioning systems last between 15 and 20 years with proper care, though the actual lifespan can vary quite a bit depending on maintenance, usage, and local climate conditions. Here in the Dallas, NC area, summer heat pushes systems hard for months on end. Understanding your unit’s expected lifespan helps you plan ahead and avoid getting caught without cooling when you need

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Wall-mounted. ductless mini split indoor unit in unfinished space.
A/C Repair

Air Conditioner Wall Unit: Types, Benefits & Common Problems

An air conditioner wall unit is a self-contained cooling system mounted through an exterior wall, delivering efficient climate control without the need for extensive ductwork or a central HVAC system. These units are popular in single rooms, add-on spaces, older homes, and anywhere a whole-house system isn’t practical or cost-effective. Because they’re installed directly through the wall with a sleeve, they’re quieter and more permanent than window models. Plus, they

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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.
Heating

Furnace Repair Cherryville: Common Causes & When to Call

When January and February temperatures drop across North Carolina, furnace repair in Cherryville becomes one of the most urgent calls we get. There’s nothing quite like waking up on a cold morning to realize your heating system has stopped working overnight — especially when your family is counting on warm air to start the day. Because Cherryville homes rely on furnaces through the coldest months, even a minor issue can

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Technician brazing or repairing refrigerant lines on an outdoor HVAC unit.
Installations

What Is a Plenum in HVAC and Why It Matters for Your Home

If you’ve been curious about what the plenum hvac component in your HVAC system actually does — or whether a problem with it could explain why your heating or cooling feels uneven — you’re asking exactly the right question. The plenum is one of those hidden components most homeowners never think about until something goes wrong. Yet it plays a crucial role in delivering conditioned air throughout your home. In

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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.
Heating

Furnace Not Blowing Hot Air Troubleshooting Bessemer City

When temperatures drop in Bessemer City during the cold months, a furnace not blowing hot air becomes an urgent problem — and the good news is that the most common culprit is also the easiest to check. Before you worry about a major breakdown, take a moment to inspect your thermostat settings. Make sure it’s set to “heat” mode rather than “fan” or “cool,” because a simple setting error accounts

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Couple sitting on a couch while using a remote to control a wall-mounted mini split air conditioner. Best for blogs about ductless mini splits, mini split operation, home cooling, and zoned comfort.
A/C Repair

Air Conditioner Not Cooling? Common Causes and When to Call

When your air conditioner is not cooling properly, the most common culprit we encounter is a dirty or clogged air filter restricting airflow — something you can check in under a minute by opening your return vent and pulling out the filter to see if light passes through. That said, we also regularly find low refrigerant from a leak, a failing compressor, frozen evaporator coils, or a faulty thermostat during

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Homeowner standing near a wall thermostat and looking confused while troubleshooting an indoor comfort issue. Best for blogs about thermostat problems, HVAC not turning on, and cooling or heating issues.
A/C Repair

AC Not Cooling Troubleshooting Guide: Diagnose Your System

The first step in any AC not cooling troubleshooting guide is to check your thermostat settings. Many times, the unit is simply set to “on” instead of “auto,” or the temperature target is too high. Once you’ve confirmed the thermostat is calling for cooling and the temperature is set below the current room temp, it’s time to look at the air filter. A clogged filter restricts airflow so severely that

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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.
Heating

Furnace Not Blowing Hot Air Troubleshooting Guide

When your furnace isn’t blowing hot air, troubleshooting starts with one simple check: make sure your thermostat is set to “heat” mode and the temperature is at least five degrees higher than your current room temperature. It sounds basic, but we see this mix-up often during our service calls, so it’s worth verifying first. That said, if your thermostat settings are correct and you’re still getting cold air—or no air

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Outdoor heat pump unit installed on a pad beside a brick exterior wall.
Heating

Heat Pump Crowders: Clearance Issues Hurting Efficiency

If your commercial heat pump system seems to be working harder than it should, or you’ve noticed uneven temperatures across your building despite recent service, heat pump crowders might be quietly sabotaging your equipment’s efficiency. In simple terms, heat pump crowders are objects, structures, or landscaping that sit too close to your outdoor unit. They block airflow, trap heat, and force your system to strain just to keep up with

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winter furnace maintenance charlotte
Maintenance

Winter Furnace Maintenance Charlotte | Expert Guide

When Charlotte’s winter temperatures drop and your family depends on steady warmth indoors, the last thing you want is a furnace breakdown in the middle of a cold night. That’s why winter furnace maintenance Charlotte homeowners trust isn’t just a suggestion—it’s essential protection for your comfort, safety, and wallet. Even though our winters are milder than up north, furnaces here still work hard through months of cycling on and off.

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commercial hvac maintenance
Maintenance

Commercial HVAC Maintenance: Essential Guide for 2024

Running a successful business means keeping all your systems working smoothly. Your heating and cooling equipment is no exception. Commercial HVAC maintenance is essential for preventing unexpected breakdowns. It also controls energy costs and ensures a comfortable environment for employees and customers alike. At David & Goliath HVAC, we’ve seen firsthand how a solid maintenance plan can save business owners thousands of dollars. In fact, regular upkeep typically extends equipment

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summer ac tune up specials charlotte
Maintenance

Summer AC Tune Up Specials Charlotte: Save Big in 2024

As Charlotte temperatures soar into the 90s, your air conditioning system works overtime to keep your family cool and comfortable. That’s why smart homeowners take advantage of summer AC tune up specials Charlotte to ensure their systems are running at peak efficiency before the heat becomes unbearable. At David & Goliath HVAC, we understand that Charlotte’s humid summers can be brutal on both your comfort and your wallet. Our summer

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seasonal hvac maintenance packages charlotte
Maintenance

Seasonal HVAC Maintenance Packages Charlotte NC Guide

When Charlotte’s sweltering summers and chilly winters put your HVAC system to the test, seasonal hvac maintenance packages charlotte homeowners rely on offer the perfect solution to keep your home comfortable year-round. These comprehensive service plans ensure your heating and cooling equipment operates efficiently, saves energy, and avoids costly breakdowns when you need it most. What Are Seasonal HVAC Maintenance Packages? Seasonal maintenance packages are comprehensive service agreements that provide

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