Mini Split Installation in Columbia, SC
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 Richland County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of work, in Columbia's heat and cold
A mini-split in Columbia runs nearly year round. Winters average 36°F at night from December through February, and summers push afternoons to 91°F from May through September. Only two months go by without the system doing real work in one direction or the other.
That kind of run time means the unit installed has to hold up on both ends, not just the cooling side. Any mini-split installed new has to meet the federal minimum for split systems, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. Since most homes here already heat with electricity, the heating side of that rating matters as much as the cooling side does.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 36°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For most homes it is, especially if a room runs hot or cold no matter what the rest of the house does. A mini split heats and cools that space directly, without ductwork, and it runs on a heat pump so one system handles both jobs. Columbia needs heat five months a year and cooling five months a year, so a system that does both is working most of the year, not sitting idle half the time. Whether it makes sense for your house depends on how it's laid out now, which a contractor can walk through with you.
- How many rooms can a mini split cover?
- A single outdoor unit can run several indoor heads, each one serving its own room. Some homes use just one indoor head for a single problem room, others run several off one condenser to cover more of the house. How many you need comes down to the size and layout of the rooms, so a contractor will size it room by room rather than guess at a number that fits every house.
- Can a mini split heat a whole house?
- It can, if there's an indoor head in enough of the rooms to cover the layout. Each head heats only the space it's in, so coverage depends on how many heads are placed and where. A house with just one or two heads will heat those rooms fine but leave the rest of the house depending on whatever heat it already has. A contractor can tell you, room by room, what full coverage would take in your house.

