HVAC Repair in Jacksonville, NC
Homes here need heat from November through March and cooling from May through September. If your system quits, tell us what it's doing and a licensed contractor who covers Onslow County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of work, most years
Onslow County homes need heat from November through March and cooling from May through September. That is ten months of the year with the system running, on winter nights that average 35°F and summer afternoons that average 88°F.
Most homes here heat with electricity, so a heat pump or electric furnace carries that winter load, and the coldest nights push it hardest. The area also sees its share of rough weather, with 68 damaging wind events and 2 winter storms recorded over the last ten years. In 2024, a quarter of North Carolina households lost power for at least 24 hours. Most heating and cooling systems come back on by themselves once power returns. If yours does not, that usually points to something that needs a look.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 35°F
- the average winter night it heats against
- 88°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
North Carolina requires HVAC contractors to hold a state license.
The license comes from the State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors. It belongs to the contractor, not to any single job, so the same license covers this repair and the next one that contractor takes on.
For a repair to your heating and cooling system, that license is what stands behind the person doing the work. It is a record kept by the state, tied to the contractor rather than to this one visit to your home.
Sources: North Carolina General Assembly · North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors
- Why is my heat not working?
- Start with the thermostat. Check that it's set to heat and the setpoint is above room temperature, and check the batteries if it has them. If the thermostat looks right, go to your breaker panel. A tripped breaker or a blown fuse will shut the whole system down. If it's a gas furnace, check that the gas valve is open and, if it has a standing pilot, that the pilot light is lit. A furnace that's electric heat only will keep working through a power outage as long as the breaker holds, but most homes here heat with electricity in some form, so check the panel first either way. If power, gas, and the thermostat all check out and you still have no heat, something inside the unit needs a contractor to look at it.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust chokes airflow across the coil, and a starved coil can't pull heat out of the house even though the blower is running. Next check that all your supply vents are open and not blocked by furniture or rugs. If the filter is clean and the vents are clear, go outside and look at the outdoor unit. If the coil there is caked with dirt or the fan isn't spinning, that's blocking the system from releasing heat outside. On a summer afternoon here pushing 88 degrees, a system that's losing to any one of these problems will run and run without ever catching up. If none of that is the issue, the refrigerant charge or a part inside the unit needs a contractor's gauge and eyes, not guesswork.
- What can I check before calling for HVAC repair?
- Check the thermostat settings, the batteries if it uses them, and the breaker for the unit. A tripped breaker or dead batteries look exactly like a failed system but take one minute to rule out. Check the air filter next. A filter that hasn't been changed in months restricts airflow enough to cause weak heat, weak cooling, or a system that short cycles. If you have a gas furnace, confirm the gas valve is open. Outside, clear leaves or debris away from the condenser unit so air can move through it. If you've checked all of that and the problem is still there, tell the contractor what you found. It narrows down what they're looking for before they even arrive.