Frigid weather in South Florida: experts explain how to stay warm.

South Florida is expecting unusually cold weather, and many residents are testing heaters or using space heaters and other heat sources. Local technicians and fire officials emphasized routine heater maintenance and noted the risks of space heaters placed too close to flammable items.

South Florida is facing an unusually cold spell this weekend, and many residents are preparing to keep homes warm. Some homeowners are testing central heating after months of little use, while others are using space heaters or other heat sources. Local technicians and Hollywood Fire Rescue spoke with CBS News Miami about maintenance checks and safety concerns. The report combined homeowner experiences with technician and fire department comments about common risks. Key facts: - Homeowner Jeff Nelke tested his heat after not using it for some time and reported the expected initial "burn off" smell as the system started. - Jason Taibl of Coral Aire told the news outlet that homeowners should have heaters checked during routine maintenance, check filters, and inspect window and door frames for air leaks. - Hollywood Fire Rescue demonstrated how quickly a space heater can ignite nearby bedding; Capt. Angelo Ganguzza described an incident in which bed sheets placed too close to a heater were left unattended and ignited. - Fire officials noted that space heaters should be kept at a distance from flammable items, be turned off before leaving a room or sleeping, and not be plugged into an extension cord. Summary: The colder conditions are prompting increased use and testing of home heating in South Florida, and local experts highlighted maintenance and safe space-heater practices. Undetermined at this time.