Why Leveling Matters More Than You Think
An unleveled RV isn't just uncomfortable to sleep in (though sliding to one side of the bed is unpleasant enough). A significantly unlevel RV affects refrigerator operation — absorption fridges require being within 3 degrees of level to function properly. Extended operation off-level can permanently damage the cooling unit. Leveling also affects water drainage, slide-out operation, and prevents strain on the frame and slideout mechanisms.
The practical standard: most RV manufacturers specify within 1–3 degrees of level in both directions (side-to-side and front-to-back). Modern built-in bubble levels or digital inclinometers make this easy to verify.
Leveling Tools
Leveling blocks (Lynx Levelers, Camco levelers): Plastic interlocking blocks you drive onto to raise wheels. Stack them to get the exact height needed. Lynx Levelers are the go-to for a reason — they're lightweight, durable, and the interlocking design prevents them from spreading. Buy 10–14 blocks minimum; you'll use more than you think.
Built-in auto-leveling (Lippert, Power Gear, HWH): Many newer RVs have hydraulic or electric auto-leveling systems. You press a button and the system extends leveling jacks automatically. These are convenient but require occasional maintenance (hydraulic fluid, calibration) and shouldn't be your only leveling approach since the system can fail.
Tongue jack (fifth wheel/TT): The front jack raises or lowers the front — the primary front-to-back level adjustment for towed units. Most have built-in levels; if yours doesn't, a bubble level on the counter inside is your reference.
Digital inclinometer: A $15–$30 digital level that shows exact degrees in both axes. More precise than a bubble level and useful when you're trying to nail the last 0.5 degrees. The Camco Leveling App is a free phone alternative.
Step-by-Step Leveling Process
For a towed unit (travel trailer / fifth wheel):
- Pull into the site and assess slope direction — use your built-in level or a phone app
- Place leveling blocks in front of the tires on the low side (side-to-side leveling first)
- Pull forward onto the blocks slowly, checking level. Add or subtract blocks until side-to-side is level.
- Chock all wheels (both sides) before unhitching — never rely on the tongue jack alone
- Unhitch and use the tongue jack to achieve front-to-back level
- Deploy stabilizer jacks — these prevent rocking, they do NOT level the RV
For a motorhome:
- Assess site slope when pulling in
- Drive onto leveling blocks for side-to-side correction, or position to use built-in auto-leveling
- If using auto-leveling: engage park brake, then activate the leveling system
- If using manual jacks: extend front/rear leveling jacks to achieve level, starting with the low side
- Set the parking brake and chock wheels before extending slides
Stabilizer Jacks vs. Leveling Jacks
This distinction confuses many first-timers:
Leveling jacks are designed to support the RV's weight and lift it off its suspension. They should be engaged for leveling and remain down while the RV is occupied.
Stabilizer jacks (the scissors jacks or X-jacks at the corners of most travel trailers) are NOT designed to support the full weight of the RV. They minimize rocking and movement. Never attempt to level using stabilizer jacks — you'll damage them and possibly the RV frame. Level first with blocks or leveling jacks, then bring stabilizer jacks down to firm contact.
Using a stabilizer pad: Place a plastic or rubber leveling pad under stabilizer jacks before extending — especially on soft ground. Without a pad, the jack foot sinks into grass or gravel, eventually allowing the rig to rock.
Related: RV campsite setup guide · First RV trip checklist · RV slide-out maintenance
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