Most of the year, Orlando homeowners rely on air conditioning. But when temperatures suddenly drop, many discover their heating system isn’t working properly.
Cold snaps in Florida often expose hidden HVAC issues that go unnoticed during warmer months. If your heat isn’t working, here are the most common reasons and what to do next.
1. Your Heat Pump Is in Defrost Mode
Heat pumps operate differently than furnaces. During colder weather, frost can form on the outdoor unit. When this happens, the system temporarily switches into defrost mode, which may cause it to blow cooler air inside. This is normal in short cycles — but if it lasts too long, service may be required.
For a deeper explanation, see our Florida Heat Pump & Heating Guide.
2. Low Refrigerant Levels
Refrigerant isn’t just for cooling. It’s essential for heating mode as well. Low refrigerant can reduce heating capacity and cause the system to struggle during cold weather. This typically requires professional diagnosis and repair. Visit our AC repair in Orlando page if you suspect a refrigerant issue.
3. Thermostat Settings Are Incorrect
During seasonal changes, thermostat settings are often overlooked. Check that the mode is set to “Heat,” the temperature setting is above room temperature, batteries are functional, and schedule settings are correct. Simple setting issues can sometimes be the cause.
4. Auxiliary Heat Is Running Constantly
Heat pumps may activate auxiliary heat during colder outdoor temperatures. If auxiliary heat runs continuously, energy bills may spike, system strain increases, and underlying issues may be present. Professional inspection can determine whether the system is operating properly.
5. Lack of Maintenance
Heating problems often appear in systems that haven’t been serviced recently. Routine HVAC maintenance in Orlando helps ensure proper airflow, correct refrigerant levels, electrical component reliability, and clean coils and drain lines.
Signs You Should Call for Service Immediately
- Heat pump won’t turn on
- System runs but produces no warm air
- Breaker keeps tripping
- Burning smells
- Loud unusual noises
During Florida cold snaps, service calls increase quickly. Addressing problems early helps avoid longer wait times.
Frequently Asked Questions
Why does my heat pump blow cool air at first?
Heat pumps may initially circulate air that feels cooler than furnace heat. This can be normal depending on outdoor temperature.
Can a heat pump stop working during cold weather?
Yes. Sudden temperature drops can expose refrigerant or airflow issues.
Is auxiliary heat expensive to run?
Yes. Auxiliary heat uses more electricity and can increase energy bills.
How often should heating systems be checked in Florida?
At least once per year, ideally before winter months.
Should I repair or replace my heating system?
If your system is older and experiencing repeated failures, replacement may be considered. Many issues, however, are repairable.
Schedule Heating Repair in Orlando
If your heating system isn’t working during a Florida cold snap, don’t wait. Contact Air and Heat Solutions or call 407-233-8000 to schedule professional HVAC repair in Orlando today.