HEAT PUMP VS FURNACEWHICH IS RIGHT FOR YOUR SUMMERVILLE HOME?
For Summerville and greater Charleston, SC homes, a heat pump is almost always the better choice. Here's why, and the one scenario where a furnace might make sense.
THE SHORT ANSWER
In the Lowcountry, you need cooling 8+ months a year and heating 2-3 months. A heat pump handles both in one system. A furnace only heats, so you'd still need a separate AC unit, which means two systems to maintain and replace instead of one. For most Summerville homes, a variable-speed heat pump is the clear winner on cost, comfort, and efficiency.
SIDE-BY-SIDE COMPARISON
| Feature | Heat Pump | Furnace |
|---|---|---|
| Heating & Cooling | Both in one system | Heating only (need separate AC) |
| Lowcountry Climate Fit | Ideal, efficient above 25°F | Overkill, rarely below 30°F here |
| Humidity Control | Excellent with variable-speed | None (need separate dehumidifier) |
| Operating Cost | 30-50% lower energy bills | Higher gas + electric bills |
| Installation Cost | $12,000-$18,000 | $8,000-$12,000 (+ AC = $16,000-$22,000) |
| Safety | No combustion, no carbon monoxide | Gas lines, CO risk |
| Lifespan | 15-20 years | 15-20 years |
| Noise Level | <50 dB (variable-speed) | 60-80 dB on ignition cycles |
WHY HEAT PUMPS WIN IN THE LOWCOUNTRY
Humidity is the real enemy
Summerville's #1 complaint isn't heat. It's muggy, clammy air upstairs. Variable-speed heat pumps remove 30%+ more moisture than standard systems. Furnaces do nothing for humidity.
One system vs two
A furnace only heats. In SC, you need AC 8+ months. That means buying, maintaining, and eventually replacing two separate systems. A heat pump does both, saving thousands over its lifetime.
Our winters are mild
Summerville rarely drops below 30°F. Heat pumps are most efficient above 25°F, making our climate ideal. In Minnesota, you might need a furnace. In SC, you don't.
30-50% lower energy bills
Heat pumps move heat rather than create it, using 30-50% less energy. A variable-speed system adjusts output to exactly what's needed, running quietly and efficiently.
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