HVAC Installation in Hartsville, 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 Darlington County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of the year, your system is working
From November through March your heat runs against nights averaging 35°F. From May through September your cooling runs against afternoons averaging 90°F. That is ten months of the year with one system or the other carrying the load, and only five months of relief.
Nearly 9 in 10 homes here heat with electricity, so a new system has to handle the cold side as well as the heat. Darlington County has logged 129 damaging wind events over the past ten years, and statewide, 45% of households lost power for at least a day in 2024. Whatever gets installed should be able to come back on and keep running through that, not just on a mild afternoon.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 35°F
- the average winter night it heats against
- 90°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- When should I replace my HVAC system?
- Once your furnace or air conditioner is old enough that repairs keep coming back, replacement is usually the better move. A contractor can tell you whether your unit is close enough to the end of its life to make repair a waste of money. If yours is breaking down every summer or winter, that is a sign to stop patching it. Homes here need heat five months a year and cooling another five, so a system that struggles in either season is working hard most of the year.
- Should I replace my furnace and air conditioner at the same time?
- If both are near the end of their life, replacing them together makes sense. A furnace and air conditioner installed at different times can end up mismatched, which makes the whole system work harder than it should. If only one is failing and the other still has years left, a contractor can size the new unit to work with what is staying. The right call depends on the age and condition of each one, so it is worth having a contractor look at both before deciding.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner, or both, and sets the new equipment in place, connecting it to your ductwork, refrigerant lines, gas line or electrical circuit as needed. They check that the ducts are sized right for the new system, since equipment that does not match the ductwork will not heat or cool evenly. Once it is connected, they test it to make sure it starts up, runs, and shuts off the way it should. A contractor can walk through the specific steps for your home before starting the work.