Mini Split Installation in Raleigh, NC
A new system here will heat from October through April and cool from May through September every year. Tell us about the house, and a licensed contractor who covers Wake County will get in touch.
Tell us about the job
It takes about a minute.
What Wake County asks of a mini-split
Your mini-split works most of the year here, not just a few weeks in summer. Homes in Raleigh need cooling from May through September and heat from October through April, so the system runs close to twelve months out of twelve. On winter nights averaging 32°F it has to hold its own as a heat source, and on summer afternoons averaging 88°F it has to keep pulling heat out all day.
A new unit installed today has to meet the federal minimum for a split-system heat pump, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. Beyond the numbers, more than half of homes here heat with electricity, so a mini-split that struggles on a cold night is not a small problem. Wake County also sees its share of winter storms and damaging wind, and a quarter of North Carolina households lost power for at least a day in 2024. Where the outdoor unit sits and how it is wired matters when the power is what keeps the house warm.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 32°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 state board tests contractors before they get that license and keeps a record of who holds one. It licenses the contractor, not the job, so the same license covers this mini-split install and whatever else that contractor takes on.
For this job, that license is what stands behind the work. On top of it, most cities and counties in North Carolina require a permit for this kind of installation, with an inspection once it's done. That inspection is a separate check on the finished work, not part of the license itself.
Sources: North Carolina General Assembly · North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors
- Is a mini split worth it?
- For the right room or house, yes. A mini split heats and cools without ducts, and it runs on a heat pump, so one system covers both your winter heating and summer cooling. Raleigh needs one or the other almost every month of the year, so a system that does both is working most of the time, not sitting idle half the year. Whether it makes sense for your house depends on how it's built and what you're heating now, and a contractor can walk through that with you.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. Single-zone systems serve one room or open area. Multi-zone systems connect several indoor heads to one outdoor unit, each with its own thermostat, so you can heat or cool rooms separately. How many zones your house needs comes down to the layout, and a contractor sizes that after seeing the space.
- Can a mini split heat a whole house?
- It can, if there are enough indoor heads placed to reach every room. A ductless heat pump moves heat instead of burning fuel for it, so it works as a whole-home heating system as long as each room has a head sized for it or is open to one that does. Closed-off bedrooms or rooms far from any head will run cold, since there are no ducts to carry heat to them. Raleigh winter nights average 32°F, so the system also needs to be sized to keep up on the coldest nights, which is something a contractor works out room by room.