RV Winterizing 2025: What’s Changed (and What Hasn’t)
Winter prep is starting earlier for a lot of RVers this year. Search interest for winterization reliably climbs each fall, and fresh guides from major industry orgs are already circulating—so let’s get ahead of it with clear, safety-first steps that avoid common (and costly) mistakes. Google Trends+1
RV Antifreeze ≠ Automotive Antifreeze
- Use ONLY RV (propylene glycol) antifreeze for your plumbing system; car/engine coolant is toxic and designed for a different system. If a guide, forum, or clerk suggests “regular antifreeze,” that’s a red flag. RV LIFE
- How much do you need? Small trailers typically use ~1–2 gallons; larger rigs can take 2–3+ depending on the number of fixtures and bypass setup. (Always verify your rig’s layout; quantities vary.) The RVgeeks
Quick-Check Winterizing Steps (High-Level)
- Drain tanks & water heater (and bypass the water heater).
- Open low-point drains; blow out lines (optional) and pump RV antifreeze through lines.
- Clean interior; remove perishables and valuables; deter pests.
- Inspect seals/roof; protect against humidity.
- Store batteries properly (see next section).
Lithium Batteries: Safer Storage, Fewer Headaches
- Why it matters in 2025: Fire services report rising lithium incidents in recent years, and battery safety has become a mainstream compliance topic across industries. RVers should follow manufacturer storage guidance more carefully than ever. Keep state-of-charge around 40–60%, store in a cool, dry place, and use a quality BMS/charger. LinkedIn+1
- Extra protection: If your pack uses safety-reinforced layers (SRL) or similar tech, that’s a plus—but it’s not a license to skip safe charging/storage practices.
- Keep it warm: Looking for a great option to keep the battery area warm in the winter, check these XTREME HEATERS out.
Park Safety: Before You Book for Fall/Winter
Recent tragedies underscore the need for clear emergency alerting at RV parks. Ask how parks issue severe-weather alerts (SMS, PA, door knocks?), where to move rigs in a flash flood, and what the escalation timeline looks like. If answers are fuzzy, choose another park. San Antonio Express-News
FAQs We’re Hearing Right Now
- “Do I need to put antifreeze in my fresh/gray/black tanks?” Usually no; leave tanks empty or nearly empty. Focus antifreeze on the lines and traps.
- “Is there an RV antifreeze shortage?” Mixed chatter appears online each fall; shop early and buy only what you need. Prefer propylene-glycol formulas to avoid ethanol smell/taste issues.
- “Is a full battery disconnect enough?” For lithium, store partially charged, avoid freezing temps during charging, and verify your BMS settings.
Printable Mini-Checklist
- Drain tanks & water heater; set bypass
- Blow out lines (optional)
- Pump RV antifreeze through lines & traps
- Clean interior; remove food/valuables; pest deterrent
- Inspect seals/roof; manage humidity
- Lithium batteries at 40–60% SOC; cool, dry storage
- Confirm park/emergency alerts before a winter stay
