Snowbird Guide: Preventing Mold in a Seasonal Florida Home
Seasonal residents leave South Florida at exactly the wrong time for a house: just before months of heat, daily rain and hurricane season. A home that sits closed from spring to fall with nobody watching is the classic setting for mold, and the discovery usually comes on the first day back. Preventing it takes planning in three areas: the air, the water and the people who check on the place.
Control the air for the whole season
The house needs active dehumidification every day you are gone. Turning the system off for the summer is not an option in this climate.
- Have the AC serviced before you leave. Ask the contractor to clean the drain line, test the float switch and confirm the system is removing moisture properly. A unit that fails in June can go unnoticed until October.
- Understand your humidistat. Many Florida homes have a humidistat wired alongside the thermostat for seasonal use. Set incorrectly, the two controls can stop the AC from running at all. Have your contractor show you the right away settings and write them down.
- Consider a dedicated dehumidifier. A whole-home unit, or a portable one draining continuously into a sink or shower, keeps working on mild, wet days when the AC hardly runs. A unit that depends on a bucket will stop within a day.
- Add remote monitoring. A connected thermostat or humidity sensor that alerts your phone lets you react to a failure in hours.
Shut down the plumbing
- Turn off the main water valve. A failed supply hose in an empty home can run for weeks. Confirm that fire sprinklers and irrigation, if present, are on separate lines before you do this.
- Deal with the water heater. Switch it off at the breaker or set it to vacation mode, following the manufacturer's instructions.
- Keep drain traps from drying out. Water in sink, shower and floor drain traps evaporates over months and lets sewer odor in. Have your home watcher run a little water in each drain during visits.
- Empty and clean the ice maker, dishwasher and washing machine, and leave their doors slightly open.
- Decide on the refrigerator. Either leave it running and empty of perishables, or turn it off, clean it, dry it and prop the doors open. A closed, unpowered refrigerator will be full of mold when you return.
Prepare the contents
- Open all interior doors, closets and a few cabinet doors so dry air circulates everywhere.
- Pull furniture a few inches away from exterior walls.
- Thin out packed closets. Do not store clothing in dry-cleaning plastic or leather goods in sealed boxes.
- Launder linens and make sure everything is fully dry before storing it.
- Remove cardboard from floors, especially in the garage and under sinks.
Arrange regular home checks
Equipment fails, storms happen and sensors lose their connection. A person walking through the home is what catches problems early. Use a home-watch service, a property manager or a reliable neighbor, and agree on a schedule, weekly if possible and after every significant storm. Give them a list:
- Is the AC running, and what do the temperature and humidity read?
- Any water in the AC drain pan or on the closet floor?
- Any new ceiling stains, damp baseboards or water at windows and sliding doors?
- Any musty smell on entering? The nose is most reliable in the first seconds.
- Any visible growth in closets, on furniture or around vents?
- Run water briefly in each drain and flush toilets if the water is on.
- After a power outage, has the system restarted with the correct settings?
Ask for photos with each report. Condo owners should also check the association's rules for unoccupied units, since many buildings have their own requirements about water shutoff, access and inspections. It is also worth asking your insurance agent whether your policy has conditions for a home left unoccupied for long periods.
Your first day back
Walk the home before unpacking. Check ceilings, closets, under sinks and the AC closet. Turn the water on slowly and look at every fixture and supply line for drips. Replace the air filter.
If you find a light film on a few items or a small spot on a hard surface, clean it with detergent and water and keep the house dry. If you find growth on walls, ceilings, inside closets or across furniture, or a strong odor with no visible source, avoid disturbing it and leave the cleanup to a remediation company. Should you want sampling done, that is the role of an independent licensed mold assessor, because in Florida the assessor and the remediator for a property must be separate companies.
A season away without surprises
Dry air, closed water valves and regular visits prevent most seasonal mold problems. If you have come back to one anyway, request an on-site remediation estimate at drymiami.com or call (954) 778-7999. The visit is $79, credited in full toward the job if you hire DryMiami.
Mold problem at home?
We come out, find the moisture source and give you a written remediation estimate. The visit is $79, credited in full toward your job if you hire us.
