What stops the heat from working when a cold front arrives?
Heating equipment in Florida often sits idle for months. When the first cold morning arrives, small problems show up.
- No heat from the vents. The thermostat may be set wrong, the batteries may be dead or a safety switch may have tripped.
- Electric heat strips not working. A failed strip, a sequencer or a tripped breaker can leave only cool air coming out.
- Heat pump struggling. A dirty coil, low refrigerant or a faulty reversing valve can stop heating mode.
- Gas or propane furnace will not light. Common causes include a dirty ignitor, a flame sensor or a blocked flue or filter.
- Strange smells. A brief burning smell on the first start of the season is often dust on the elements. A lasting or strong smell needs a technician.
A technician can usually tell quickly which of these is behind the problem.

