HVAC Installation in Wilmington, NC
A new system here will heat from November through March and cool from May through September every year. Tell us about the house, and a licensed contractor who covers New Hanover County will get in touch.
Tell us about the job
It takes about a minute.
Wilmington asks a lot from both sides of the system
Ten months out of the year, your system is working. Heat from November through March, on nights that average 36°F. Cooling from May through September, against afternoons averaging 88°F.
Most homes here heat with electricity, so the unit that warms the house in winter is often the same one cooling it in summer. A new system has to be sized for both jobs. New Hanover County also sees its share of wind. Fifty-nine damaging wind events and six winter storms over the past ten years, and a quarter of North Carolina households lost power for at least a day in 2024. Worth asking any contractor how the system you install handles an outage, and what it takes to bring it back on once power returns.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 36°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 North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors licenses the contractor, not the job. That means the board tested the person or company before they were allowed to take on work like this, and there is a record of who holds that license. It does not mean the board signs off on your installation itself.
For a new furnace, air conditioner or heat pump, that part comes from the local building office. In most cities and counties, an installation like this needs a permit and an inspection once the work is done. The license tells you the contractor was tested. The permit and inspection are what check this particular job.
Sources: North Carolina General Assembly · North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors
- When should I replace my HVAC system?
- Replace your system when it's breaking down more than once a season, when repairs keep costing you, or when it can't keep the house comfortable through the winter lows and summer highs here. Age matters too. An older furnace or air conditioner working hard is more likely to fail right when you need it most. If a technician tells you the heat exchanger is cracked or the compressor is failing, that's a repair not worth making. Homes here need heat from November through March and cooling from May through September, so a system that quits leaves you without either for a real stretch, not just a mild inconvenience.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, and here's why. A furnace and air conditioner installed years apart often don't match well, and a mismatched pair runs less efficiently than a system designed to work together. Replacing them together also means one visit, one permit, one inspection, instead of going through the process again later. That said, if one of the two still has real life left in it, there's no reason to replace it just because the other one failed. A contractor can look at both and tell you honestly whether pairing the replacement makes sense for your house.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner or heat pump and sets the new equipment in place, connecting it to the ductwork, refrigerant lines, gas line or electrical circuit depending on what's being installed. They'll check that the ducts are sized right for the new equipment, since a system that's too big or too small for the ductwork won't heat or cool evenly. In most places around Wilmington, this job needs a permit from the local building office, and an inspector checks the work once it's done. That inspection is there for your protection, confirming the gas connections, wiring and venting were done to code before the contractor leaves the job.