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Do You Really Need Heating in Florida?
Why most Central Florida homes heat with a heat pump or electric strips instead of a furnace — and how to stay warm during the occasional hard freeze.
The Short Answer
Florida's heating reality
Winter Haven sees relatively few hours below 50°F each year, and hard freezes are occasional rather than routine. That light, intermittent heating load changes everything about how homes here are equipped. Instead of a big furnace sized for a northern winter, the efficient choice is a system that heats just enough, just often enough — which is exactly what a heat pump does.
How most Florida homes actually heat
- Heat pump (most common): the same outdoor unit that cools your home reverses in winter to pull heat from outdoor air and bring it inside. Very efficient in our mild winters.
- Electric strip / auxiliary heat: electric resistance coils in the air handler kick in for the coldest mornings or when the heat pump needs a boost. Effective, but more expensive to run, so it's backup — not the primary source.
- Gas furnace (rare): used in a minority of homes, usually older or specific builds. Most new Central Florida systems skip it entirely.
The 'emergency heat' setting — and a common mistake
Many Florida thermostats have an 'EM HEAT' or 'AUX' option. Emergency heat forces the electric strips on and locks out the efficient heat pump — it's meant for when the heat pump itself fails, not for everyday cold. Leaving a system on emergency heat through a cold week is a frequent cause of a shocking power bill. In normal operation, let the system manage the heat pump and backup heat automatically.
Staying warm during a cold snap
When a freeze does roll through Polk County, a heat pump may run longer and lean on backup heat — that's normal. If your system can't keep up, struggles below about 40°F, or the backup heat never engages, it's worth having it checked before the next front arrives. A correctly sized heat pump handles Central Florida winters comfortably; if yours doesn't, sizing or a component issue is usually the reason.
Why you can trust this guide
Across Polk County, the heating call we get most isn't a broken furnace — it's a homeowner who left the thermostat on Emergency Heat and got a scary electric bill. The fix is usually a five-minute setting change.
Reviewed by Billy Gregus, Owner of Integrity Refrigeration & AC. Last updated June 2026. We'd rather you understand the *why* than just take our word for it — and if you'd like a real person to look at your specific system, a locally owned Winter Haven team is a phone call away.
Want this answer for your system specifically? A locally owned Winter Haven technician can take a look — same-day appointments across Central Florida.
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Common Questions Answered
Do houses in Florida have heaters?
Yes, but most Central Florida homes heat with a heat pump rather than a furnace. The heat pump runs the AC process in reverse to warm the home efficiently, with electric backup heat for the coldest days. Gas furnaces are uncommon because the heating load here is light.
What is emergency heat and when should I use it?
Emergency (EM) heat forces the electric backup coils on and bypasses the efficient heat pump. It's intended only for when the heat pump fails — using it as everyday heat dramatically raises your electric bill. For normal cold weather, leave the thermostat on regular HEAT and let the system manage itself.
Why is my heat pump blowing cool air in heating mode?
Heat-pump air feels cooler than furnace air because it heats more gently — that's normal. It can also be a defrost cycle, where the unit briefly melts frost off the outdoor coil. If the air stays genuinely cold and the home won't warm up, the backup heat or a refrigerant issue may need attention.
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