Heat Pump Installation in Sumrall, MS
A new system here will heat from November through March and cool from May through October every year. Tell us about the house, and a licensed contractor who covers Lamar County will get in touch.
Tell us about the job
It takes about a minute.
A heat pump in Sumrall runs almost every month
Your heat pump works 11 months a year here, one season handing off to the next with barely a break. Winter nights average 40°F from December through February, mild enough that a heat pump can carry the heating load on its own. Summer afternoons average 91°F, and that side of the job runs six months, May through October.
Most homes in this area heat with electricity, so the heat pump you install is the main line of defense against both the cold nights and the hot afternoons. Any new split system has to meet the federal minimum of 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. The area has also logged 101 damaging wind events over the past ten years, and 30% of Mississippi households went at least 24 hours without power in 2024. Worth asking your contractor how the unit you choose handles a power outage and what it does when the power comes back on.
- 5 months
- November through March, your system heats
- 6 months
- May through October, it cools
- 40°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.
The license is held by the contractor, not issued job by job, so it says the business itself met the state's bar, not that this particular installation was pre-approved. The State Board of Contractors is the one that tested and records the contractor doing your work.
For a heat pump install, that license is what backs the person doing the job, but it is not the only check here. Most cities and counties in Mississippi require a permit for a heat pump replacement, with an inspection once the work is done, and that inspection is what confirms the installation itself was done right.
Source: Mississippi State Board of Contractors
- Is a heat pump better than a furnace?
- It depends on what you're comparing it to. A heat pump moves heat instead of burning fuel to create it, so it handles both heating and cooling with one system. Here winters average a 40°F low, mild enough that a heat pump can carry the heating load on its own most nights. A furnace only heats, so you'd still need a separate air conditioner for the 6 months a year homes here need cooling.
- 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 house, but it also has a reversing valve that lets it run backward in winter and move heat into the house instead. That's why a heat pump can replace both your furnace and your air conditioner, while an air conditioner alone leaves you needing a separate heat source.
- Does a heat pump work in cold weather?
- Yes. A heat pump pulls heat from outside air even when it's cold, since there's still heat in the air down to well below freezing. Winter nights here average 40°F, which is well within the range a heat pump handles without trouble. New units also have to meet a federal minimum of 7.5 HSPF2 for heating efficiency, so any heat pump installed here now is rated for the job.