The last dive bag is still damp in the garage, and the next trip is months away. That is when knowing how to winterize scuba gear prevents mildew, sticky valves, flattened neoprene, and unpleasant surprises at the start of next season. The basic job is simple: rinse it, dry it fully, inspect it, then store each item without heat, sunlight, pressure, or harsh chemicals. Dry means genuinely dry.
How long gear sits matters. A few weeks between dives usually calls for normal post-dive care, while three months or more merits a deliberate off-season setup. Do not pack damp equipment into a sealed tote or leave it in a car trunk. Both are bad storage spots.
How to winterize scuba gear step by step
- Set up a clean drying area. Use a shaded, ventilated room or covered outdoor space, with room to separate each item. Keep gear away from direct sun, heaters, furnace rooms, pool chemicals, fuel, and electric motors that produce ozone. Shade is safer.
- Rinse everything with fresh water. A thorough soak is more useful than a quick spray, especially after saltwater dives. Work buttons, zippers, buckles, inflator controls, and dump-valve cords gently while rinsing so trapped salt can dissolve. Do not press a regulator purge button underwater unless the first stage is properly sealed and the dust cap is clean and dry.
- Use suitable cleaner only where needed. A mild product made for dive equipment can help with persistent odor or grime, following its label directions. Avoid bleach, household detergents, solvents, petroleum products, and silicone sprays on gear unless the manufacturer specifically permits them. Rinse again afterward.
- Dry every item completely. Hang exposure protection inside out first, then turn it right-side out after the inner lining dries. Open BCD pockets, unfold hoses, drain boots and gloves, and leave the BCD bladder partly inflated so internal surfaces can air out. Give it time.
- Inspect before putting gear away. Check hoses for cracking, regulator mouthpieces for tears, fin straps for dry rot, mask skirts for distortion, and BCD seams or valves for visible damage. Write down anything questionable now. It is easier to arrange service without a trip deadline.
- Store by material and vulnerability. Place dry gear in a cool, dark, dry area with airflow. Avoid crushing soft gear under bins, tightly coiling regulator hoses, or hanging heavy BCDs by one shoulder strap for months. A broad hanger helps.
Prepare regulators and gauges carefully
Regulators need a little extra attention because moisture and contamination around the first stage can cause trouble. Confirm the dust cap and the face around the inlet are dry before fitting the cap. Trapped water is the problem.
After rinsing and drying, loosely coil hoses in wide loops and keep the second stages supported rather than dangling. Do not use a rubber band, zip tie, or tight wrap that puts a permanent bend into a hose. Store the set in a breathable regulator bag, a clean drawer, or a roomy plastic bin left slightly ventilated.
A regulator that is due for service should go to an authorized technician according to the manufacturer schedule, usage, and local shop guidance. Calendar age alone does not diagnose condition. If you found free-flowing, unusual breathing resistance, corrosion, or damaged hoses during your last dives, have it assessed before the next one.
Store BCDs, wetsuits, masks, and fins without damage
For BCD storage, rinse the outside and flush the bladder according to the manufacturer instructions. Drain it completely, then leave a small amount of air inside for storage. The bladder should hold its shape.
Hang a BCD on a sturdy, wide hanger or lay it flat where nothing will compress the inflator, corrugated hose, or integrated weight pockets. Remove any integrated weights first. Never leave weights in the BCD over the off season.
Neoprene lasts longer when it is clean, dry, and not sharply folded. Use a thick wetsuit hanger, fold it loosely across a wide bar, or lay it flat if space allows. Thin wire hangers can stretch the shoulders of a heavy suit. Keep neoprene away from hot attics, sheds with major temperature swings, and sunlight through windows.
Store masks in a protective box so the skirt does not become bent against hard items. Keep fins flat or upright with the blades supported, not wedged under a heavy crate. Rinse and dry snorkels too. Small items get forgotten.
Handle dive computers, lights, and batteries
Rinse dive computers in fresh water after the final dive, dry the contacts and buttons, and inspect the strap. Check the manufacturer guidance for long-term battery storage because recommendations differ by model and battery type. Some user-replaceable battery compartments should be opened only when the manual calls for it.
For torches, remove batteries if the manufacturer permits it and the light will sit unused for months. This reduces the chance of leaked cells damaging contacts. Store rechargeable batteries at the charge level specified by their maker, in a dry place away from metal objects and heat. Do not leave a light sealed if you suspect water entered it.
Make a note of battery replacement dates and computer service intervals. A phone reminder works. When the season returns, you will know what needs attention before a boat day.
What to do with scuba cylinders
Cylinders deserve separate care because they are pressure vessels. Do not attempt internal inspection, valve removal, or service at home. Use a cylinder professional for anything beyond normal external care.
Rinse the cylinder exterior, dry it, and inspect for obvious external corrosion, deep gouges, damaged boot areas, or a sticky valve handwheel. Store it upright and secured against falling in a dry location away from salt air and corrosive chemicals. Check local rules and the cylinder manufacturer guidance for the appropriate storage pressure, since practices and requirements can differ by cylinder type and region.
Before the first dive back, confirm the cylinder has current required inspection markings, acceptable pressure, and no concern identified during storage. If a cylinder was left empty or exposed to water around the valve, have a qualified cylinder professional inspect it. Do not guess here.
Build a simple return-to-diving check
Winterizing is only half the process. A week before your first planned dive, unpack gear in daylight and inspect it again. This gives you time to replace a mask strap or book regulator service instead of making a rushed purchase at the dock.
- Check all rubber parts, buckles, zippers, and hose routing.
- Install fresh batteries where required and confirm computer settings.
- Inspect cylinder status and arrange fills or inspection early.
- Assemble and test equipment in a controlled setting, following manufacturer instructions and your dive training.
- Address any regulator, BCD, cylinder, or exposure-suit concern before diving.
A dry-land check cannot replace proper equipment service or a buddy check. It does catch obvious issues. If you are unsure about a regulator, cylinder, or BCD fault, ask a qualified service professional and discuss any skills questions with a certified instructor.
Frequently asked questions
Can I store scuba gear in a plastic bin?
Yes, once every item is fully dry. Use a clean, roomy bin, avoid overpacking it, and consider leaving the lid slightly ajar where dust and pests are not a concern. A sealed bin traps residual moisture. That can create mildew.
Should I leave my BCD inflated for winter storage?
Leave a small amount of air in a clean, dry BCD bladder after draining it. It helps prevent the bladder walls from sticking together. Do not inflate it hard or store it under pressure. Follow the specific BCD manual if it gives different instructions.
Can I hang a wetsuit all winter?
Yes, if you use a wide hanger that spreads the load and the suit is fully dry. For a thick, heavy wetsuit, folding it loosely over a broad bar or laying it flat may reduce shoulder stretching. Avoid narrow wire hangers.
Do regulators need service every year if they were not used?
Service intervals come from the regulator manufacturer and can depend on time, use, warranty terms, and condition. Inactivity does not guarantee a regulator is ready to dive. Check the official manual or ask an authorized technician, especially if the regulator is past its stated interval.
What is the biggest off-season storage mistake?
Putting damp gear into a closed bag is the common one. Salt residue and trapped moisture can lead to odor, mildew, corrosion, and stiff moving parts. Give equipment enough drying time before packing it away.
Related posts
This article is for general informational purposes only and is not dive training or medical advice. Always train with a certified instructor and consult a doctor before diving if you have any health concerns. Gear specs, pricing, site conditions, and operator schedules change, so verify current details directly with the manufacturer or dive operator.
Disclosure: This post may contain affiliate links. If you click through and make a purchase, we may earn a commission at no extra cost to you. We only recommend gear we’ve researched or genuinely believe in.