Heat pump vs Furnace in Harrison County, Mississippi
When a heat pump makes sense
If you're not already tied to a gas line, a heat pump makes sense here. Winter nights average 42°F, mild enough that a heat pump keeps up without much strain, and you only need heat about five months a year. It costs about 5% less to run than gas at Mississippi prices, and you get cooling from the same system in summer.
When a furnace makes sense
If your home already has gas heat, there's no strong reason to switch. Furnaces heat well regardless of how cold it gets outside, and with only about five months of heating season here, that extra capacity mostly goes unused. Gas costs a bit more to run than a heat pump at current Mississippi prices, but the difference is small enough that sticking with what you have is a fair call.
When a heat pump makes sense
If you're not already tied to a gas line, a heat pump makes sense here. Winter nights average 42°F, mild enough that a heat pump keeps up without much strain, and you only need heat about five months a year. It costs about 5% less to run than gas at Mississippi prices, and you get cooling from the same system in summer.
When a furnace makes sense
If your home already has gas heat, there's no strong reason to switch. Furnaces heat well regardless of how cold it gets outside, and with only about five months of heating season here, that extra capacity mostly goes unused. Gas costs a bit more to run than a heat pump at current Mississippi prices, but the difference is small enough that sticking with what you have is a fair call.
Heat pump
- Runs on
- Electricity
- What it does
- Heats and cools
- Tax credit
- No federal tax credit since the end of 2025
Sources: U.S. Department of Energy · Internal Revenue Code
Furnace
- Runs on
- Natural gas
- What it does
- Heats only
- Tax credit
- No federal tax credit since the end of 2025
Sources: U.S. Department of Energy · Internal Revenue Code
Heat pump wins in Harrison County.
Winters here rarely drop past 42°F, so a heat pump keeps up fine without the gas hookup most homes already skip.
If your home already has a gas line and a furnace in good shape, keep it, since there is no cooling to gain from switching this way.
Find a contractor| Compared on | Heat pump | Furnace |
|---|---|---|
| Cost to run here | About 5% less to run | Costs more to run |
| What it does | Heats and cools | Heats only |
| Homes in the inland South that heat with one | 31.8% | 53.4% |
| Handles a 42°F night | Standard models lose heating power in the cold; cold-climate models are built for it | Yes |
Sources: U.S. Energy Information Administration, U.S. Department of Energy, NOAA
When a heat pump makes sense
If you're not already tied to a gas line, a heat pump makes sense here. Winter nights average 42°F, mild enough that a heat pump keeps up without much strain, and you only need heat about five months a year. It costs about 5% less to run than gas at Mississippi prices, and you get cooling from the same system in summer.
When a furnace makes sense
If your home already has gas heat, there's no strong reason to switch. Furnaces heat well regardless of how cold it gets outside, and with only about five months of heating season here, that extra capacity mostly goes unused. Gas costs a bit more to run than a heat pump at current Mississippi prices, but the difference is small enough that sticking with what you have is a fair call.
A Harrison County contractor will price both against your own house, your ductwork and your panel.
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