Heat Pump Installation in Greenville, MS
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 Washington County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of work, most years
A heat pump in Greenville runs almost year round. Winter nights average 37°F from December through February, mild enough that a heat pump does the work without much strain. Summer afternoons average 91°F, and that side of the job runs May through September. Between the two, the system is heating or cooling ten months of the year.
Any split-system heat pump installed new today has to meet federal minimums of 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. With Greenville's summers running long and hot, the cooling side of that rating matters as much as the heating side, maybe more, since better than half the homes here still lean on gas for heat and ask less of the heat pump in winter.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 37°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
Mississippi requires HVAC contractors to hold a state license.
Mississippi's license is issued through the State Board of Contractors. It belongs to the contractor, not to any single job, so it is not something checked or renewed for this particular install.
Because Mississippi licenses at the contractor level, that license is what stands behind the work itself. It does not replace the local permit process. In most cities and counties, installing a heat pump needs a permit from the local building office and an inspection once the work is done.
Source: Mississippi State Board of Contractors
- Is a heat pump better than a furnace?
- A heat pump does something a furnace cannot. It moves heat instead of burning fuel to make it, so it also cools your home in summer, which means one system handles both jobs here instead of two. Winters in Greenville only get down to about 37°F on average, mild enough that a heat pump can carry the heating load without much strain. A furnace only heats, and more than half the homes here already use gas for that. Whether switching makes sense for your house is something a contractor can walk through with you.
- What's the difference between a heat pump and an air conditioner?
- An air conditioner only cools. A heat pump does the same job in summer, moving heat out of your home, but it can also run in reverse and move heat into your home in winter. That reversing valve is the real difference between the two machines. In a place like Greenville, where homes need cooling from May through September and heat from November through March, that one piece of hardware is why a heat pump can replace both a furnace and an AC.
- Does a heat pump work in cold weather?
- Yes. A heat pump pulls heat from the outside air even when it feels cold, because there is still heat in air well below freezing. Greenville winters average around 37°F at night, which is well within the range a heat pump handles without trouble. New heat pumps sold today also have to meet a federal minimum of 7.5 HSPF2 for heating efficiency, so the equipment on the market now is built for exactly this kind of climate. In much colder regions a heat pump needs backup heat for the coldest days, but that is less of a concern with winters this mild.

