Reviewed by Brian Gordon, President · Last Reviewed: September 30, 2026 · 3 min read
If you've had an HVAC quote in the last couple of years, there's a good chance a heat pump came up — even if you weren't asking about one. Here's what they actually do, and how that plays out in a North Carolina climate.
How a heat pump actually works
A furnace makes heat by burning fuel. A heat pump doesn't make heat — it moves it. In cooling mode, it works exactly like a standard air conditioner, pulling heat out of your home and releasing it outside. In heating mode, it runs the same cycle in reverse, pulling heat from the outdoor air (yes, even cold air still holds usable heat) and moving it inside.
Because it's transferring heat rather than generating it, a heat pump can deliver more heating energy than the electrical energy it consumes — which is where most of its efficiency advantage comes from.
How that holds up in our climate
The Piedmont Triad's winters are moderate compared to the northern half of the country — we get real cold snaps, but not sustained deep-freeze conditions for months at a time. That's a reasonably favorable climate for heat pump performance, since modern heat pumps lose efficiency as outdoor temperatures drop toward the single digits.
That's also why "auxiliary heat" or "emergency heat" exists on most heat pump thermostats — a backup electric-resistance heating element that kicks in when the outdoor temperature drops low enough that the heat pump alone can't keep up. It's normal for it to run occasionally during a cold snap. It's not normal for it to run constantly in mild weather — that usually points to a system problem worth diagnosing.
What "dual-fuel" means
A dual-fuel (or "hybrid") system pairs a heat pump with a gas furnace instead of an electric-resistance backup. The system runs on the heat pump most of the time, and automatically switches to the furnace once outdoor temperatures drop below a set point where combustion heat becomes more cost-effective than electric backup heat. This is worth a conversation if you already have gas service to your home and want the efficiency of a heat pump without relying on electric-resistance backup during the coldest days.
What actually determines if it's a good fit
- What fuel sources are already available at your home (electric-only vs. gas + electric)
- Your home's insulation, ductwork condition, and heating/cooling load
- Local electricity and gas pricing, which affects long-term operating cost
- Whether you're replacing an aging system anyway, versus swapping a working one early
There's no universal right answer — a heat pump is a strong fit for a lot of homes in this region, but "a lot" isn't "all." The honest way to answer this for your specific house is a load calculation and a look at your current setup, not a blanket recommendation.
Next step
If you're weighing a heat pump against a conventional system — or your current heat pump isn't performing the way it should — that's exactly what a proper evaluation is for.